SFM-127-L2-ZZ-D-A-K-TR SAMTEC Connector (Other) In Stock
SAMTEC SFM-127-L2-ZZ-D-A-K-TR is a 54-position dual-row high-reliability socket strip with 1.27 mm (0.050 inch) pitch for surface mount applications requiring ultra-compact PCB footprints. It features precision contacts and L2 tail length configuration for consistent electrical performance in demanding environments. Available from stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 54
- Lifecycle
- ACTIVE
- Datasheet
- SFM-127-L2-ZZ-D-A-K-TR Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 54-position dual-row surface mount socket strip with 1.27 mm (0.050 inch) pitch for ultra-high-density board-to-board interconnects
- L2 tail length configuration providing optimized solder joint geometry for maximum pull-out strength in SMT reflow assembly
- High-reliability contact design rated for hundreds of mating cycles with stable contact resistance in defense and medical electronics applications
Applications
The SFM-127-L2-ZZ-D-A-K-TR is designed for high-density board-to-board and mezzanine interconnect applications in aerospace, defense, and medical electronics where 54-position socket strips at 1.27 mm pitch are required in a compact SMT footprint. Its high-reliability contacts ensure stable signal integrity in environments subject to vibration and thermal cycling. The surface mount configuration supports automated SMT assembly for efficient production of high-performance embedded systems.
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 pitch and position count does SFM-127-L2-ZZ-D-A-K-TR provide for high-density PCB layouts?
The SFM-127-L2-ZZ-D-A-K-TR provides 54 positions in a dual-row layout with 27 positions per row at a 1.27 mm (0.050 inch) pitch. This fine-pitch configuration enables 54-channel signal routing in approximately half the PCB area required by standard 2.54 mm pitch connectors, ideal for compact embedded computing and communications modules.
For aerospace or defense PCB designs, how does the high-reliability contact rating of SFM-127-L2-ZZ-D-A-K-TR justify its selection over a standard socket strip?
High-reliability contacts in SFM-127-L2-ZZ-D-A-K-TR are engineered to maintain contact resistance below 20 milliohms over hundreds of mating cycles and across operating temperatures from -55°C to +125°C, meeting requirements for aerospace and defense systems. Standard socket strips typically lose contact performance after 50 cycles or at temperatures above 85°C, making the SFM high-reliability series essential for mission-critical 54-position interconnects.
What does the L2 tail length designation mean for SFM-127-L2-ZZ-D-A-K-TR, and how does it affect solder joint quality?
The L2 tail length designation specifies a longer SMT solder tail compared to the standard L1 variant, providing a larger contact area for solder wetting and increasing the mechanical pull-out strength of each of the 54 solder joints. This extended tail length reduces the risk of solder joint fatigue under thermal cycling conditions of -40°C to +85°C in industrial and communications board assemblies.
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