SFM-129-T2-LM-D-A-K SAMTEC Connector (Other) In Stock
The SFM-129-T2-LM-D-A-K is a Samtec 58-position dual-row high-reliability socket strip with 0.050" (1.27 mm) pitch in a surface mount configuration. It offers 116 contacts total for high-density board-to-board mating in demanding applications. Available from global distributors with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 58
- Lifecycle
- ACTIVE
- Datasheet
- SFM-129-T2-LM-D-A-K Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 116-contact (58 positions x 2 rows) 0.050" (1.27 mm) pitch socket strip for ultra-high-density SMT board-to-board connections
- High-reliability design with low-mass contacts optimized for high-speed signal integrity and reduced crosstalk at fine pitch
- Surface mount profile with solderable terminations enables automated reflow assembly in compact, high-density PCB layouts
Applications
The SFM-129-T2-LM-D-A-K is designed for high-density mezzanine card interconnects, FPGA daughtercard sockets, and advanced microprocessor module applications requiring 116 pins at a fine 1.27 mm pitch. Its dual-row surface mount format enables compact PCB stacking with low-profile mating in data communications, military, and aerospace electronics. The high-reliability construction ensures consistent electrical performance across extended temperature cycling and mechanical vibration environments.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the pitch and total contact count of the SFM-129-T2-LM-D-A-K?
The SFM-129-T2-LM-D-A-K uses a 0.050 inch (1.27 mm) pitch and provides 116 contacts total in a dual-row configuration with 58 positions per row. This fine pitch allows high-density mating in constrained PCB areas where standard 2.54 mm or 2.0 mm pitch connectors would consume significantly more board space.
How does the SFM-129-T2-LM-D-A-K compare to lower-density socket strips for high-speed PCB designs?
Compared to 0.100 inch pitch socket strips, the SFM-129-T2-LM-D-A-K provides approximately twice the contact density in the same linear board length, supporting 116 pins versus 58 at standard pitch. Its low-mass contact design reduces signal propagation delay and crosstalk, making it more suitable for differential signal pairs operating above 1 GHz.
Is the SFM-129-T2-LM-D-A-K suitable for automated SMT assembly?
Yes, this connector features a surface mount termination footprint compatible with standard reflow solder processes at up to 260°C, enabling fully automated PCB assembly using paste printing and convection oven reflow. The SMT mounting style eliminates the need for through-hole drilling and wave soldering, reducing PCB fabrication complexity and cost.
What application environments demand the high-reliability specification of the SFM-129-T2-LM-D-A-K?
The high-reliability rating addresses applications such as military avionics, industrial robotics, and telecommunications switching equipment that must sustain 500 or more mating cycles while maintaining contact resistance below 20 milliohms. These environments also subject connectors to thermal cycling between -55°C and +125°C and continuous vibration levels that standard commercial connectors cannot reliably survive.
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