SFM-109-T2-H-D-A-K-TR SAMTEC Connector (Other) In Stock
SAMTEC SFM-109-T2-H-D-A-K-TR is an 18-position, dual-row, 1.27 mm (0.050 inch) pitch high-reliability SMT socket strip with T2 contact tails and polarization key in tape-and-reel packaging. Designed for precision mezzanine and board-to-board connections at 1.5 A per contact.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 18
- Lifecycle
- ACTIVE
- Datasheet
- SFM-109-T2-H-D-A-K-TR Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 18 dual-row positions at 1.27 mm (0.050 inch) pitch for high-density mezzanine interconnects
- T2 contact tail and polarization key (K) for accurate alignment and secure engagement in high-reliability assemblies
- Tape-and-reel (TR) packaging supporting automated SMT pick-and-place production at scale
Applications
SFM-109-T2-H-D-A-K-TR serves high-reliability board-to-board and mezzanine stacking applications in aerospace, defense, and industrial instrumentation. The polarization key prevents misorientation of the 36-contact interface, protecting sensitive signal and power lines during assembly and maintenance. The 1.27 mm pitch allows integration in compact multilayer PCB stacks where standard 2.54 mm connectors would exceed the available footprint.
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 role does the polarization key (K) play in SFM-109-T2-H-D-A-K-TR for a 36-contact dual-row assembly?
The K designation on SFM-109-T2-H-D-A-K-TR adds a polarization key that physically prevents incorrect 180-degree mating of the 36-contact, dual-row connector. Without keying, misalignment at 1.27 mm pitch is easy to miss visually, and an incorrect connection could damage up to 18 signal or power pins per row simultaneously in test or field maintenance scenarios.
How does SFM-109-T2-H-D-A-K-TR's 0.050 inch pitch improve density versus SFM connectors at 2.54 mm pitch?
At 1.27 mm (0.050 inch) pitch, SFM-109-T2-H-D-A-K-TR fits 18 dual-row positions within approximately 23 mm of row length, compared to roughly 46 mm for an equivalent 2.54 mm pitch part. This roughly 2x reduction in footprint is critical for compact processor modules, FPGA daughter cards, and high-density instrument PCBs where every square millimeter matters.
For which procurement scenario is the tape-and-reel (-TR) version of SFM-109-T2-H-D-A-K-TR preferred over cut-strip packaging?
The TR (tape-and-reel) variant of SFM-109-T2-H-D-A-K-TR is the appropriate choice when production volume exceeds a few hundred units per run and the SMT line uses automated pick-and-place equipment. At volumes below 50 to 100 units or during prototyping, cut-strip or tray packaging avoids the minimum tape-and-reel order quantity, typically 1000 to 3000 pieces per reel.
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