The “Small Man” for Harsh Environments: Samtec’s Tiger Eye 1.27mm Board-to-Board Connector

When selecting connectors, electrical interconnect performance such as transmission rate, current that can be carried, and voltage must be the factors that developers are very concerned about. In addition, the reliability and durability of connectors are often a priority. elements. This is easy to understand – if a connector is just a “flower in a greenhouse” that cannot withstand the ups and downs of the real application environment, then its nominal performance parameters are useless.

When selecting connectors, electrical interconnect performance such as transmission rate, current that can be carried, and voltage must be the factors that developers are very concerned about. In addition, the reliability and durability of connectors are often a priority. elements. This is easy to understand – if a connector is just a “flower in a greenhouse” that cannot withstand the ups and downs of the real application environment, then its nominal performance parameters are useless.

Therefore, continuously enhancing the product’s tolerance to harsh environments has always been an important direction for connector manufacturers’ technological iteration, and it is also an important indicator of their own product differentiation. As a result, the Rugged Connector has gradually developed into an important product line.

Features of Durable Connectors

The so-called “durable” may be understood differently by different people, but “durable” connectors usually include the following features:

• Maintains mechanical and electrical integrity after exposure to harsh environments and multiple mating operations;
• Can withstand high mechanical shock and vibration without affecting interconnect performance;
• Can provide good EMI shielding characteristics in complex electromagnetic environment.

In order to improve durability, modern connector products are usually optimized through the following aspects:


Mainly make a fuss about the contact material, coating and structure, from reducing the contact resistance of the contact, increasing the area of ​​the contact area, enhancing the normal force of the mating, reducing the environmental exposure and the mechanical strength deterioration after repeated mating, etc. aspects are optimized.


On the one hand, the insulating material must meet the requirements of the design specifications, and on the other hand, the structure of the entire insulator must also form a comprehensive protection for the contacts, so as to avoid the influence of external factors on the contacts as much as possible.

Locking and Termination

The additional latch mechanism helps the mated connector to cope with higher mechanical shocks and vibrations. At the same time, in terms of termination to the PCB, fastening methods such as screws, soldering, and soldering nails are also provided to meet high durability. sex, stability.

Sealing and Shielding

Specialized seals and shields are naturally indispensable for connectors that require protection against water, dust, and electromagnetic interference.

Around these aspects, the major connector manufacturers are also the Eight Immortals crossing the sea, showing their abilities and practicing their own unique skills in the market. Among them, when it comes to Samtec’s durable connector products, its stunts in “contact” design can be regarded as outstanding.

Unique Tiger Eyecontact system

Tiger EyeThe contact system is one of Samtec’s masterpieces, designed for miniature durable, high reliability, high mating cycles, rated for over 1,000 mating cycles.

Figure 1: Tiger Eye contact system (Image credit: Samtec)

The Tiger Eye system has carefully considered the selection of contact materials. It is known that common materials available for contact substrates include brass, phosphor bronze and beryllium copper (BeCu). Among them, brass is a very cheap one of the three metal materials. It has excellent electrical properties, but due to its low yield strength, it is not suitable for contact beams in sockets. Phosphor bronze is stronger and more resilient than brass, making it suitable for applications where contact mating cycles and flexure are not critical. The Tiger Eye contact system uses a third material, a heat-treated beryllium copper alloy. Although this material is more expensive, the resulting contacts are very mechanically resilient and, once formed and hardened, retain their shape under a variety of conditions, providing not only higher mechanical strength and electrical performance, but also for It is also beneficial to improve the high reliability and high durability of the product, which can be said to be an ideal “candidate” for harsh environments and high mating cycles.

The Tiger Eye system is also ingenious in the design of the contact mechanism. It adopts a “multi-finger” structure, and the contact mating surface is located on the flat and smooth side of each “gold finger”. The smooth surface can prolong the plugging life of the connector as much as possible, and also reduce the pressure on the electroplating process. , the contact resistance is also lower.

There is also a very clever “detail” on the Tiger Eye contacts – a micro-groove is designed on the tail, which allows the solder paste to penetrate the groove during reflow soldering, wetting the larger surface area on the lead to provide greater soldering point strength; at the same time, compared with ordinary flat leads, this connector with tail microgrooves can better adhere to wet solder paste, these characteristics all help to improve the mechanical strength of the connector assembly on the PCB.

In addition, the Tiger Eye contacts also have a micro-groove in the transition area between the gull wing tail and the contacts, which acts to prevent the “wicking” effect of the solder. Although the amount of solder in the SMT process is relatively small, the “wick” effect is not common, but once it occurs, this micro-groove can destroy the capillary action and prevent the solder from migrating to the contact contact area and affecting the connection performance.

It can be said that the Tiger Eye contact system strives to be in place in every detail, which also provides a solid foundation for creating durable connector products with excellent performance based on the Tiger Eye contact system.

Figure 2: Key features of the Tiger Eye contact system (Image credit: Samtec)

Based on Tiger Eyeboard-to-board connectors

At present, Samtec has developed products with three pitches (0.80mm, 1.27mm and 2.00mm) based on the Tiger Eye contact system. Among them, the TFM/SFM series pin/header board-to-board connectors with 1.27mm contact pitch are the widest Products favored by users of interconnect solutions in industrial and other harsh environments.

Figure 3: TFM/SFM series pin/header board-to-board connectors (Image source: Samtec)

Among them, the TFM 1.27mm pin connector has a shield shell, and the polarized design can realize blind mating. It has a cylindrical terminal with a diameter of 0.018″ (0.46mm), and the single-row and double-row layout can support 100 pins; the Available in a variety of options such as screw fastening, solder tabs and solder studs, the series can meet the needs of most high-durability application scenarios, and can provide vertical, right-angle, horizontal mounting methods, as well as through-hole, surface mount different end connected products.

Figure 4: TFM series pin board-to-board connectors (Image source: Samtec)

The SFM series 1.27mm headers used to mate with the TFM series pins are also available in polarized single-row and double-row layouts, up to 100 pins, and screw-on and solder-nail options are also available to meet high durability requirements . Its vertical and horizontal mounting orientations, through-hole and surface-mount terminations, also allow for greater application flexibility.

Figure 5: SFM series header board-to-board connectors (Image source: Samtec)

With the support of Tiger Eye contact system, one of the highlights of TFM/SFM series board-to-board connectors is of course reliability and durability – these connector products have passed Samtec’s extremely stringent SET test (strict environmental testing).

You must know that SET is a set of test standards “customized” by Samtec to measure the ability of connectors to withstand harsh environments, including the standard Design Qualification Testing (DQT) and Extended Life Product previously introduced by Samtec.(ELP) tests, with some additional tests for interconnected system applications in more extreme/harsh applications or environments, beyond what is required by typical industry standards. Therefore, it can be said that a product that has passed the SET test and obtained the following mark means that it is already the “top class” in durable connectors.

Figure 6: Samtec Severe Environment Testing (SET) logo (Credit: Samtec)

Just how “durable” the TFM/SFM series connectors tested by SET are, you can see at a glance through the following set of product specification data:

Durability Specifications for TFM/SFM Series Connectors

• Number of insertion and removal cycles at 100% relative humidity: 250 times
• Simulated 70,000 feet high-altitude electric strength (DWV): Voltage 300VACfor 60 seconds without breakdown
• Electrostatic discharge (ESD) test voltage: 5kV, 10kV, 15kV
• 500 temperature cycles: temperature range -65°C to +125°C, dwell time 30 minutes
• Mechanical shock: peak 40G, duration 11ms, half-sine waveform
• Random vibration: 12gRMS, frequency 5Hz to 2,000Hz, 1 hour duration per axis

Obviously, you can rest assured that such products are used in the military/aviation industry, as well as in the automotive, industrial and medical fields.

Summary of this article

Faster transmission speed, greater transmission power, more compact product size, higher ferrule density… These are the main tracks in the connector product competition. On this basis, if anyone’s products can be unique in reliability and durability, they can further gain a differentiated competitive advantage and win an important position in some specific application fields.

Samtec’s TFM/SFM 1.27mm series board-to-board connectors, based on the Tiger Eye contact system designed for rugged applications, provide users with an ideal solution for high-reliability, high-durability interconnect applications, and It also maintains excellent electrical performance and a slender “stature”. If you want to learn more about these “little men” who are not afraid of harsh environments, please visit the product page on the Mouser Electronics website!

About Mouser Electronics

Mouser Electronics is an authorized global distributor of semiconductors and Electronic components serving the world’s largest electronic design community. Mouser Electronics is authorized to distribute nearly 1,200 well-known brands, and can order millions of online products, providing customers with a one-stop sourcing platform. Welcome to follow us and get first-hand design and industry information!

The Links:   LQ10D344 LP150X10-A2

Chip shortage causes Huawei mobile phone prices to rise: Mate 30, P40 series have increased significantly

The new round of control measures imposed by the United States on Huawei came into effect on September 15 this year. Since then, many of Huawei’s suppliers can no longer supply Huawei unless they obtain a license from the US Department of Commerce.

On September 18, the Beijing News Shell Finance reporter visited the mobile phone wholesale market in Huaqiangbei, Shenzhen. Many agents told Shell Finance reporter that Huawei’s mobile phones have indeed risen in price recently, but they can still get the goods, and said that at present The Mate 40 series has not yet been released, and if it is released, it will be actively stocked in advance.

For the reason for the price increase, agents generally believe that it is related to the shortage of Huawei’s chips, but the price has dropped recently. The quotation table provided by the agent to reporters shows that the quotations of Huawei Mate 30 series and P40 series have been reduced, but there is still a large increase compared with two months ago.

Chip shortages may cause Huawei’s mobile phone prices to generally rise

The Mate 30 and P40 series have increased significantly

Accompanying this ban is the news that Huawei mobile phones have recently raised prices. Huawei did not explain this, but judging from the quotations from dealers, Huawei’s mobile phones have indeed experienced a relatively obvious price increase recently.

According to the quotation table provided by one of the dealers to the reporter, taking the Mate 30 5G (8+256G) black as an example, the price of this model was 4390 yuan two months ago, but now it has risen to 5010 yuan, an increase of 620 yuan. It is close to the level of 5,499 yuan when it was just released at the end of September last year.

In addition, the P40 series, which is also equipped with the Kirin 990 chip, also has a price increase. Take the P40 Pro (8+256G) black as an example. Two months ago, the price of this model was 5,880 yuan, but now it has risen to 6,180 yuan. 300 yuan, which is almost the same as 6488 yuan when it was just released in April this year.

Shell Finance reporters noticed that the price increase of Huawei models equipped with Kirin 990 chips is higher. The dealers said that this may be related to the shortage of chips, but they all said that they can still get the goods at present, but the cost of getting the goods has increased.

The release date of the high-end flagship model Mate 40 in the second half of this year has not yet been determined. According to Huawei’s release rules, the Mate 40 will release its own HiSilicon self-developed chip Kirin 9000 before the release, but this chip has not yet been released. Yu Chengdong, CEO of Huawei’s consumer business, said on Weibo on September 14, “Please wait a little longer, everything will arrive as scheduled”, in order to appease consumers’ expectations.

“Isn’t it said that the Kirin 9000 of Mate 40 is an out-of-print chip? It is estimated that the channel price will not be low at that time.” A dealer told reporters that if the Mate 40 is released, it will actively stock up, and I believe this model will be very popular.

However, Huawei’s Mate 40 series this year will face Apple’s challenge – this year, Apple will release the company’s first 5G mobile phone iPhone 12 series, which is believed to be expected to drive a large number of Apple users to switch phones. Wedbush’s earlier research report pointed out that China is still a key factor in Apple’s success secret, and it is estimated that about 20% of iPhone upgrades in the next year will come from this region. “We believe that 60 million to 70 million iPhones in China alone are in a window of upgrade opportunities in the next year, and despite the competitive pressure from domestic manufacturers, Apple will be aggressive at all price points (SE, iPhone 12) , to strengthen its foundation.”

After the ban came into effect, many suppliers applied to the US for export licenses

Since the beginning of this year, the US government has gradually escalated its suppression of Huawei, which has had a certain impact on its consumer business. On May 16 this year, the U.S. Department of Commerce officially upgraded Huawei’s export control. Not only was Huawei unable to import components from U.S. manufacturers, but equipment or manufacturers containing U.S. technology also needed a license from the U.S. Department of Commerce to produce chips for Huawei.

Since then, Huawei has turned to cooperate with chip companies such as MediaTek, hoping to purchase other chip companies to meet consumer business needs, but this plan has failed again – the third wave of the US government’s crackdown has updated the ban rules, non-US Companies and off-the-shelf chips are also included in the ban on exports to Huawei, leaving Huawei only one month.

After the ban came into effect on September 15, many of Huawei’s suppliers have stopped supplying it, but many companies are actively applying for export licenses from the US Department of Commerce. At present, SMIC, MediaTek, Micron, etc. have all publicly stated that these companies have applied to the United States to continue supplying Huawei in accordance with regulations, and South Korean media have also reported that Samsung and SK Hynix have recently submitted formal applications to the U.S. Department of Commerce .

However, the market is not optimistic about the approval of these companies’ applications, so Huawei is also actively looking for other solutions and development ideas. At this year’s developer conference, Yu Chengdong proposed for the first time that Huawei will launch a software and hardware two-wheel drive system. Scenario smart ecology, this statement is different from the previous “1+8+N” strategy that favors hardware.

In order to cope with the risk of Google’s Android system and GMS deactivation, Huawei pushed the Hongmeng system and HMS (Huawei Mobile Services) to replace it, and made it clear that Huawei mobile phones will fully support the Hongmeng system next year. The purpose of these measures is to keep Huawei mobile phones in overseas markets. share. Hope to outperform in the third quarter. At the same time, OPPO has also reached a group-level cooperation with Vodafone. As it gradually reaches cooperation with more large-scale channel providers, growth can be expected in the future. “

In the past, when Apple and Huawei’s new phones were released in September, the original old models often began to cut prices and clear stock, but this year, Huawei’s Mate 30 series and P40 series were uncharacteristically, and prices began to increase to varying degrees in August. What do you think about this?

The Links:   KG047QVLAA-G020 2MBI900VXA-120P-50

New function blessing! Wi-Fi 7 standard 802.11be exposure

According to foreign media reports, Wi-Fi 6 (ie 802.11ax) is one of the hottest buzzwords in the technology field, and many organizations are exploring new Wi-Fi use cases. In the future, this technology will not only transmit data faster, but even detect the user’s physical location and breathing rate.

Wi-Fi capabilities being explored by the IEEE (Institute of Electrical and Electronics Engineers) are helping to shape the new Wi-Fi standard 802.11be, including connectivity between vehicles and motion detection within homes. The latter is of particular interest because it allows device makers to build health features around simple devices like routers.

IEEE President Paul Nikolich said: “We want to detect people moving from room to room without any sensors. The technology is also sensitive enough to even detect the user’s breathing rate, Because when they breathe, they change the RF characteristics and the channel characteristics.”

But that doesn’t guarantee Wi-Fi 7 will add human detection when it’s released. Not to mention, it will be at least four years before the next Wi-Fi standard is released. Still, the possibility of allowing home networks to detect human presence is significant, as it could open the door to more innovations.

The Links:   LM64C353 SEMIX604GB12T4S

Infineon BSM50GX120DN2 New Stock

#BSM50GX120DN2 Infineon BSM50GX120DN2 New ECONOPACK 2K/PKG IGBT POWER MODULE 1200-VOLT 72-AMP 350-WATT; , BSM50GX120DN2 pictures, BSM50GX120DN2 price, #BSM50GX120DN2 supplier


IGBT Power Module Infineon #BSM50GX120DN2
• Half-bridge
• Including fast free-wheeling diodes
• Package with insulated metal base plate
Maximum ratings and characteristics
.Absolute maximum ratings (Tc=25°C unless without specified)
Collector-Emitter voltage Vces:1200V
Gate-Emitter voltage VGES:±20V
Collector current Ic:78A
Collector current Icp:158A
Collector power dissipation Pc:350W
Isolation Voltage VIsol (AC 1 minute) :2500V
Operating junction temperature Tj:+150°C
Storage temperature Tstg :-40 to +125°C
Mounting screw torque 3.5 *1 N·m

BSM50GX120DN2 Video

How about the tariff of mobile 5G package in November?

On October 25th, at the 5G Industry Alliance Conference of China Mobile Beijing Company, Li Wei, deputy general manager of Beijing Mobile, revealed that the 5G commercial package will be officially launched on November 1st.

On June 6 this year, my country officially issued 5G licenses, and 5G entered the first year of commercial use. The characteristics of 5G are that it can bring large bandwidth, high speed and low latency.

On September 30 this year, major operators have opened 5G package reservations, and users can get 100G of 5G traffic every month for free. Statistics show that in just 20 days, there are nearly 10 million 5G subscription users.

It is understood that China Mobile will build more than 50,000 5G base stations in 2019 to provide 5G commercial services to more than 50 cities, and will serve all cities above the prefecture level by 2020. Li Wei revealed that Beijing Mobile has built nearly 5,000 5G base stations, and has completed outdoor coverage in the Fifth Ring Road and suburban counties, and Beijing-Hong Kong Metro Line 16 is the world’s first underground rail transit to achieve full coverage of 5G signals.

In terms of 5G tariffs, Yang Jie, chairman of China Mobile, expressed his hope to change the 4G model of charging based on a single dimension of traffic and provide multi-dimension, multi-dimensional and multi-modal billing, so as to promote 5G to achieve a wider range and more applications in the field to realize the greater value of 5G.

The Links:   TPS24751RUVR NL10276AC30-04W

Electric vehicles have become the trend, where will hybrid vehicles go?

With the growing awareness of environmental protection, the continuous improvement of three electric technologies and the intensification of the layout of infrastructure such as charging piles, for new energy vehicles, the electrification of new energy vehicles is imperative. How long will it last for a hybrid car?


Judging from the current situation, for cities with no purchase restrictions or purchase restrictions, both pure electric vehicles and plug-in hybrid vehicles can be selected. The hybrid has two power systems on the structure, and once the car runs out of electricity, it will use oil. Compared with pure electric vehicles, pure electric vehicles rely on electric energy to drive, which is quiet and noise-free for vehicles, and the cost of vehicle maintenance will be relatively cost-effective. In terms of energy source alone, pure electric vehicles are more pure than plug-in hybrid vehicles, and they are new energy vehicles in the true sense. Plug-in hybrids still require fuel.

Furthermore, judging from the current state subsidies for pure electric vehicles, pure electric vehicles have the largest subsidy and the strictest subsidy standards, while plug-in hybrid models are not much subsidized. Furthermore, there are obvious shortcomings in terms of plug-in hybrids. Taking a family as an example, if there is no charging condition, or there is no charging pile for charging, then it can only run in the fuel hybrid mode, and the fuel consumption is low. The performance is unsatisfactory, not even lower than the fuel consumption of fuel vehicles. After all, the weight of the vehicle battery makes the plug-in hybrid vehicle heavier than the same series of fuel vehicles.


But for electric vehicles, don’t worry about this situation. At least pure electric vehicles use electricity, and ultimately do not need to consume chemical fuels. From the perspective of energy saving, pure electric vehicles are more energy-efficient than hybrids.

Furthermore, from the perspective of vehicle networking and intelligence, electric vehicles do not have complex mechanical mechanisms, and are easier to control than plug-in hybrids. Hybrid vehicles are transitional products from fuel vehicles to pure electric vehicles. It is fuel saving, so car price and oil price have become the main reasons. Pure electric vehicles have achieved zero exhaust emissions, and there is no need to worry about energy problems. After all, there are many ways to convert electric energy, so looking at the overall situation, pure electric technology still has A lot of details are worth exploring. Before the era of pure electricity is popular, there is still a certain market prospect for hybrid vehicles. It can be seen that the plug-in hybrid vehicle is only a transitional product in the development of new energy vehicles.

The Links:   CLAA201WA03 LM215WF3-SLD1

IXYS IXFN180N10 New Stock

#IXFN180N10 IXYS IXFN180N10 New Power Field-Effect Transistor, 180A, 100V, 0.008ohm, 1-Element, N-Channel, Silicon, Metal-oxide Semiconductor FET, MINIBLOC-4; , IXFN180N10 pictures, IXFN180N10 price, #IXFN180N10 supplier


Manufacturer Part Number: #IXFN180N10
Pbfree Code: Yes
Ihs Manufacturer: IXYS CORP
Package Description: FLANGE MOUNT, R-PUFM-X4
Pin Count: 4
ECCN Code: EAR99
Manufacturer: IXYS Corporation
Power Field-Effect Transistor, 180A I(D), 100V, 0.008ohm, 1-Element, N-Channel, Silicon, Metal-oxide semiconductor FET, MINIBLOC-4

IXFN180N10 Video

Semikron SKiiP83ANB15T5 New Stock

#SKiiP83ANB15T5 Semikron SKiiP83ANB15T5 New SKiiP83ANB15T5 IGBT 1200V/125A; , SKiiP83ANB15T5 pictures, SKiiP83ANB15T5 price, #SKiiP83ANB15T5 supplier


#SKiiP 83ANB15T5
Maximum ratings and characteristics
.Absolute maximum ratings (Tc=25°C unless without specified)
Collector-Emitter voltage Vces:1200V
Gate-Emitter voltage VGES:±20V
Collector current Ic:85A
Collector current Icp:250A
Collector power dissipation Pc:250W
Collector-Emitter voltage VCES:2500V
Operating junction temperature Tj:+150°C
Storage temperature Tstg :-40 to +125°C
Mounting screw torque 3.5 *1 N·m
IGBT 1200V/125A

SKiiP83ANB15T5 Video

Sharp LQ6RA02 New Stock

#LQ6RA02 Sharp LQ6RA02 New Sharp 5.7 inch LCM 720×240(dot) 120 30:1 45/45/30/10 Full color CCFL Analog; LQ6RA02 , LQ6RA02 pictures, LQ6RA02 price, #LQ6RA02 supplier


Brand Sharp
Model #LQ6RA02
Diagonal Size 5.7 inch
Type a-Si TFT-LCD, LCM
Pixel Format 720×240  60PPI
Configuration RGB Delta
Active Area 113.8(H)×87.6(V) mm
Outline Dim 149.4(H)×117(V) ×23(D) mm
Luminance 120 cd/m² (Typ.)
Contrast Ratio 30:1 (Min.) (TM)
View Direction 12 o’clock
Response Time 30/50 (Typ.)(Tr/Td)
Viewing Angle 45/45/30/10 (Typ.)(CR≥10) Left / Right / Up / Down
Operating Mode TN, Normally White, Transmissive
Support Color Full color
Light Source CCFL  [2 pcs] , W/O Driver
Weight 310±20g
Touch Panel Without
Interface Type Analog , 20 pins Connector
Power Supply 5.0/-8.0V (Typ.)(VSH/VSL)
Environment Operating Temperature: 0 ~ 40 °C ; Storage Temperature: -25 ~ 60 °C
LQ6RA02 inverter, LQ6RA02 power supply, LQ6RA02 electronic board, LQ6RA02 VGA board, LQ6RA02 touchscreen available.

Fuji 6MBI100FC-060 New Stock

#6MBI100FC-060 Fuji 6MBI100FC-060 New 6MBI100FC-060 IGBT: 100A 600V; 6MBI100FC-060 , 6MBI100FC-060 pictures, 6MBI100FC-060 price, #6MBI100FC-060 supplier


6MBI100FC-060 Features:
• Compact package
• P.C.board mount
• Low VCE(sat)
• Low Saturation Voltage
• Voltage Drive
• Variety of Power Capacity Series
Inverter for motor drive
• AC and DC servo drive amplifier
• Uninterruptible power supply
• Industrial machines, such as welding machines
IGBT: 100A 600V

6MBI100FC-060 Video