SFM-139-T2-SM-D-A SAMTEC Connector (Other) In Stock
High-reliability 78-position dual-row SMT socket strip with 0.050" (1.27mm) pitch, designed for dense board-to-board interconnects requiring 2A per pin current capacity and robust mating cycles.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 78
- Lifecycle
- ACTIVE
- Datasheet
- SFM-139-T2-SM-D-A Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 78-position dual-row layout at 0.050" pitch delivers high-density interconnect in minimal PCB footprint
- Surface-mount termination with 2A per-pin current rating supports power and signal mixed-use applications
- High-reliability design rated for 500+ mating cycles ensures long service life in demanding field-replaceable module applications
Applications
SFM-139-T2-SM-D-A is used in high-density board-to-board mating applications such as daughtercard sockets, FPGA mezzanine connections, and test and measurement probe interfaces. Its 0.050" pitch and 78-position dual-row format is well suited for data acquisition systems, communications equipment, and embedded computing modules. The surface-mount footprint allows automated assembly and space-efficient placement on densely populated PCBs.
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 and rows does SFM-139-T2-SM-D-A provide, and what is its pitch?
SFM-139-T2-SM-D-A provides 78 positions arranged in a dual-row configuration with a 0.050" (1.27mm) pitch. This format offers high contact density while maintaining compatibility with standard SMT pick-and-place assembly processes, making it practical for compact high-pin-count interconnect designs.
What current rating should engineers plan for when using SFM-139-T2-SM-D-A in a power-mixed signal design?
Each pin of SFM-139-T2-SM-D-A supports up to 2A of current, providing a total rated capacity suitable for distributing both power and high-speed signals across 78 pins. Designers should derate to approximately 1A per pin in high-density thermal environments to stay within connector body temperature limits.
Is SFM-139-T2-SM-D-A suitable for daughtercard applications where the module is frequently swapped?
Yes, SFM-139-T2-SM-D-A is rated for 500 or more mating cycles, which makes it well-suited for field-replaceable daughtercard and module applications. The dual-row 0.050" pitch socket maintains contact integrity over repeated insertions, supporting maintenance-intensive deployments in instrumentation and industrial computing environments.
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