SFM-139-L2-ZZ-D-A-K-TR SAMTEC Connector (Other) In Stock
SAMTEC SFM-139-L2-ZZ-D-A-K-TR is a 78-position, dual-row, 0.050-inch pitch high-reliability surface mount socket strip for dense board-to-board signal routing. Features gold-plated contacts rated at 1A per pin for reliable low-resistance mating. From $4.20 in stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 78
- Lifecycle
- ACTIVE
- Datasheet
- SFM-139-L2-ZZ-D-A-K-TR Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SFM-139-L2-ZZ-D-A-K-TR?
- 78-position dual-row SMT socket strip at 0.050-inch (1.27 mm) pitch for ultra-high-density board-to-board interconnects in compact modules
- Gold-plated contacts rated at 1A per pin with high cycle-life reliability suitable for aerospace, defense, and industrial applications
- Tape-and-reel delivery format enables automated pick-and-place assembly for high-volume surface mount production
What is SFM-139-L2-ZZ-D-A-K-TR used for?
The SFM-139-L2-ZZ-D-A-K-TR is designed for high-density PCB-to-PCB signal interconnects in aerospace avionics boards, defense electronics modules, and high-performance embedded computing platforms where 78 signals must be routed in a minimal footprint. Its 0.050-inch pitch provides significantly higher connection density than standard 0.100-inch alternatives, enabling compact mezzanine and sandwich board designs. The gold-plated contact system ensures long-term reliability across repeated mating cycles in demanding vibration and thermal environments.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SFM-139-L2-ZZ-D-A-K-TR datasheet?
SFM-139-L2-ZZ-D-A-K-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for SFM-139-L2-ZZ-D-A-K-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the position count, pitch, and current rating of the SFM-139-L2-ZZ-D-A-K-TR?
The SFM-139-L2-ZZ-D-A-K-TR is a 78-position dual-row socket strip with 0.050-inch (1.27 mm) pitch and gold-plated contacts rated at 1A per pin, providing a high-density interconnect solution for 39 contacts per row in a compact SMT footprint.
How does the 0.050-inch pitch of the SFM-139-L2-ZZ-D-A-K-TR benefit compact multi-signal board designs?
At 0.050-inch (1.27 mm) pitch, the SFM-139-L2-ZZ-D-A-K-TR fits 78 signal positions in roughly half the board length of a 0.100-inch pitch equivalent, enabling compact sandwich PCB and mezzanine board designs common in aerospace and defense avionics modules.
Which mating connector from SAMTEC is compatible with the SFM-139-L2-ZZ-D-A-K-TR?
The SFM series socket strips typically mate with SAMTEC TSM or TFM series 0.050-inch pitch headers; designers should confirm the mating height requirement (L2 suffix designates a specific stacking height) and select the appropriate TSM or TFM pin header to achieve the target board-to-board separation, such as 8 mm or 11 mm stack heights.
What assembly process and packaging format does the SFM-139-L2-ZZ-D-A-K-TR require?
The TR suffix indicates tape-and-reel packaging for automated SMT pick-and-place assembly; reflow soldering at up to 260°C peak temperature per IPC/JEDEC J-STD-020 is required to attach the 78-pin surface mount footprint without warping the connector housing.
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