SFM-138-T2-FM-D-A-K SAMTEC Connector (Other) In Stock
SAMTEC SFM-138-T2-FM-D-A-K is a 76-position dual-row high-reliability surface-mount socket strip with 0.050" (1.27 mm) pitch for dense board-to-board interconnects. Features gold-plated contacts rated for 1 A per pin with consistent mating force across all 76 positions. Sourced from global distributors with competitive lead times.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 76
- Lifecycle
- ACTIVE
- Datasheet
- SFM-138-T2-FM-D-A-K Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 76-position dual-row configuration at 0.050" (1.27 mm) pitch delivers high signal density in a compact SMT footprint
- Gold-plated contacts provide low insertion loss and corrosion resistance for high-cycle-count mating applications
- High-reliability construction tested for thousands of mating cycles ensures stable electrical performance in demanding environments
- Surface-mount termination compatible with automated reflow processes reduces assembly time and cost versus through-hole alternatives
Applications
The SFM-138-T2-FM-D-A-K is designed for high-density mezzanine and daughter-card interconnects in telecommunications line cards, FPGA development boards, and high-speed data acquisition systems where 76 signals at 0.050" pitch provide compact routing without sacrificing reliability. Its SMT form factor supports automated assembly in volume production environments. The part also serves as a high-reliability interface in mil-aero and instrumentation applications requiring stable contact resistance over many mating cycles.
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
How many positions does the SFM-138-T2-FM-D-A-K provide, and what is the contact pitch?
The SFM-138-T2-FM-D-A-K provides 76 positions in a dual-row layout at 0.050" (1.27 mm) pitch, making it one of the higher-density options in the SFM socket strip family and well-suited for FPGA mezzanine and high-speed daughter-card applications.
What current per contact does the SFM-138-T2-FM-D-A-K support, and how does the gold plating affect reliability?
Each of the 76 contacts is rated for approximately 1 A, and the gold-plated finish minimizes contact resistance and prevents oxidation, sustaining consistent electrical performance across thousands of mating cycles in environments with temperature cycling or humidity.
For a high-speed FPGA daughter card, why is the 0.050" pitch of SFM-138-T2-FM-D-A-K preferable to a 0.100" pitch connector?
At 0.050" pitch, the 76-position dual-row SFM connector occupies roughly half the board edge length of an equivalent 0.100" pitch part, leaving more room for power planes, decoupling capacitors, and signal routing traces that are critical for FPGA designs operating at hundreds of MHz.
What mating connector should be paired with the SFM-138-T2-FM-D-A-K in a board stacking assembly?
The SFM socket strip series is designed to mate with SAMTEC's corresponding header strips such as the TSW or TFM series at 0.050" pitch, with mating heights selectable from under 5 mm up to approximately 20 mm depending on the stacking height required by the mechanical design.
Related Guides
ECMF02-4CMX8 Common-Mode Filter with ESD Protection: Selection Guide
Compare ECMF02-4CMX8 vs ECMF02-2AMX6, ECMF04-4HSM10, and other ST ECMF filters. Choose the right 4-channel common-mode filter with ESD protection for USB 2.0.
Jun 20, 2026
AD5204 Quad Digital Potentiometer Selection Guide (2026)
How to choose the right AD5204 quad digital potentiometer: compare 10kΩ vs 100kΩ variants, TSSOP vs SOIC packages, and SPI interface options for your design.
Jun 20, 2026
0402 10uF X5R Decoupling Design Guide for Compact Digital Rails
Application note for using CL05A106MP5NUNC-class 0402 10uF X5R MLCCs in compact digital rail decoupling designs.
Jun 19, 2026
How to Choose an 0805 10uF MLCC for Decoupling and Bulk Capacitance
Selection guide for choosing 0805 10uF MLCCs around CL21A106KOQNNNE, covering derating, dielectric, package, and sourcing checks.
Jun 19, 2026
Why Buy from FindMyChip
About SAMTEC
SAMTEC is a leading electronic component manufacturer. FindMyChip sources SAMTEC ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”