TFC-127-02-LM-D-A SAMTEC Connector (Other) In Stock
SAMTEC TFC-127-02-LM-D-A is a 54-position dual-row Tiger Eye cost-effective terminal strip with 0.050 inch (1.27 mm) pitch for high-density board-to-board and mezzanine connector applications. Tiger Eye contacts ensure reliable mating with standard 0.025 inch square-pin headers across repeated cycles. Available from stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 54
- Lifecycle
- ACTIVE
- Datasheet
- TFC-127-02-LM-D-A Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 54-position dual-row layout on 0.050 inch (1.27 mm) pitch delivers 108 total contacts for high-density board interface applications
- Tiger Eye dual-beam bifurcated contacts provide 2 independent touch points per 0.025 inch square post for maximum connection reliability
- Cost-effective terminal strip design reduces per-contact BOM cost while maintaining SAMTEC quality standards for signal integrity
Applications
The TFC-127-02-LM-D-A is intended for high-density mezzanine and FPGA expansion card sockets, data acquisition backplanes, and embedded computing platforms where a 108-contact dual-row 0.050 inch pitch strip consolidates multiple signal and power rails into one connector. Its Tiger Eye contacts mate with the broad ecosystem of SAMTEC 0.025 inch square-post headers including TSM and TFM series, offering layout flexibility across mixed connector families. The cost-effective terminal strip construction supports high-volume production designs that require more than 50 differential or single-ended signal paths per mated connector pair.
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 total positions does the TFC-127-02-LM-D-A provide and what is its pitch?
The TFC-127-02-LM-D-A is a 54-position dual-row terminal strip on a 0.050 inch (1.27 mm) pitch, giving 108 total contact positions in a single connector. This 108-contact capacity is appropriate for mid-to-high-density board interfaces such as FPGA mezzanine sockets, DDR memory module edge connectors, or I/O expansion card backplane interconnects requiring more than 50 signal paths.
How does the TFC-127-02-LM-D-A Tiger Eye contact differ from a standard single-beam socket in a high-vibration design?
The Tiger Eye contact uses a bifurcated dual-beam design so each 0.025 inch square pin is gripped by 2 independent spring beams simultaneously. In high-vibration environments such as industrial motor drives or vehicle-mounted controllers, if one beam deflects slightly off the pin surface, the second beam maintains the electrical path, keeping contact resistance stable below typical 100 mΩ thresholds. Single-beam sockets lack this redundancy and are more susceptible to momentary opens under vibration.
When should a designer choose the TFC-127-02-LM-D-A over a higher-position-count connector such as TFC-143-02-F-D-A for a 100-signal interface?
A 108-contact TFC-127-02-LM-D-A is the better match for interfaces requiring exactly 100 to 108 differential or single-ended signals, because it avoids the unused contacts and larger PCB footprint of the 172-contact TFC-143-02-F-D-A. Using a connector sized to the actual signal count reduces board area by approximately 20% compared to the next larger part, lowers per-unit cost, and simplifies impedance-controlled routing near the connector edge.
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