SFM-138-T2-L-D-A-P SAMTEC Connector (Other) In Stock
SAMTEC SFM-138-T2-L-D-A-P is a 76-position dual-row high-reliability socket strip with 0.050" (1.27 mm) pitch for surface-mount board-to-board interconnection. Features gold-plated contacts, polarization post, and a low-profile SMT footprint for precision mating with SFM-series headers. Available from stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 76
- Lifecycle
- ACTIVE
- Datasheet
- SFM-138-T2-L-D-A-P Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 76 positions in dual-row 0.050" (1.27 mm) pitch layout delivering ultra-high signal density in a compact SMT socket
- High-reliability gold-plated contacts rated for extended mating cycles in demanding industrial and medical environments
- Polarization post (P suffix) prevents incorrect mating orientation, reducing assembly errors in field-replaceable module designs
- Surface-mount termination with low-profile body compatible with automated reflow soldering and tight PCB stack heights
Applications
The SFM-138-T2-L-D-A-P is designed for high-density board-to-board socket applications in medical imaging, industrial control, and telecommunications equipment where 76 signals must be routed reliably between stacked PCBs at 0.050" pitch. The polarization post ensures fool-proof module insertion in field-serviceable designs, reducing mis-mate risk during maintenance. Its surface-mount form factor integrates into automated SMT assembly lines for both prototyping and volume production.
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 signal contacts does the SFM-138-T2-L-D-A-P provide and at what row configuration?
The SFM-138-T2-L-D-A-P offers 76 positions in a dual-row layout at 0.050" (1.27 mm) pitch, with 38 contacts per row. This high-density configuration allows routing of 76 discrete signals across a board-to-board stack interface that fits within a PCB area approximately 48 mm long, which is considerably more compact than equivalent 2.54 mm pitch connectors would require for the same signal count.
What does the polarization post on the SFM-138-T2-L-D-A-P connector do during board assembly and field service?
The polarization post (indicated by the P suffix in SFM-138-T2-L-D-A-P) physically keys the socket so it can only mate with the header in the correct orientation, preventing reversed insertion that could damage contacts or cause electrical faults. This is particularly valuable in field-serviceable module designs where technicians may replace boards under time pressure, ensuring reliable 76-pin connections across 0.050" pitch interfaces without needing visual alignment guides.
Which application sectors most commonly use the SFM-138-T2-L-D-A-P and why is the 0.050" pitch preferred there?
The SFM-138-T2-L-D-A-P is most commonly used in medical imaging modules, industrial control backplanes, and high-channel-count data acquisition boards where 76 or more signals must pass between stacked PCBs in space-constrained enclosures. The 0.050" (1.27 mm) pitch is preferred because it provides twice the contact density per unit length compared to 0.100" pitch connectors, enabling compact module form factors without sacrificing signal count in applications such as ultrasound scanners or multi-axis motion controllers.
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