TFM-138-05-FM-D-LC SAMTEC Connector (Other) In Stock
SAMTEC TFM-138-05-FM-D-LC is a high-reliability Tiger Eye dual-row terminal strip with 0.050" (1.27 mm) pitch and 76 total positions, featuring a female socket (FM) low-current configuration for high-density signal board-to-board interconnects. Designed for compact embedded systems. Available in stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 76
- Lifecycle
- ACTIVE
- Datasheet
- TFM-138-05-FM-D-LC Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TFM-138-05-FM-D-LC?
- 76-position dual-row female Tiger Eye socket strip at 0.050" (1.27 mm) pitch enabling ultra-high-density signal interconnection between stacked PCBs
- Low-current (LC) rating up to 1 A per pin optimized for digital signal, I2C, SPI, and LVDS interfaces at 3.3 V or 5 V logic levels
- Tiger Eye compliant-beam female contacts ensure reliable engagement with mating male pins, maintaining contact force over thousands of mate/unmate cycles
What is TFM-138-05-FM-D-LC used for?
The TFM-138-05-FM-D-LC is designed for stacked PCB assemblies in FPGA evaluation boards, high-speed data acquisition modules, and RF mezzanine cards requiring 76-pin dual-row female connectivity at 0.050" pitch. Its low-current designation and Tiger Eye contact technology make it well-suited for signal routing in telecommunications equipment, software-defined radio platforms, and mil-aero mission computers. The compact footprint supports high-density board layouts where 0.100" pitch connectors would occupy twice the board area.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TFM-138-05-FM-D-LC datasheet?
TFM-138-05-FM-D-LC Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TFM-138-05-FM-D-LC?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What does the FM designation mean in TFM-138-05-FM-D-LC, and how does it affect mating compatibility?
The FM designation in TFM-138-05-FM-D-LC indicates a female socket contact style, meaning it mates with corresponding male pin headers from the SAMTEC TFM or TFM-compatible series at 0.050" (1.27 mm) pitch. This dual-row 76-position female socket is designed as the receptacle side in a board-to-board stack, accepting male pins that insert with controlled engagement force to protect signal contacts.
For a high-speed PCB stack, what signal types can be routed through the TFM-138-05-FM-D-LC's 76 positions?
TFM-138-05-FM-D-LC supports digital signals including LVDS pairs, SPI, I2C, UART, and GPIO at logic levels up to 5 V across all 76 positions. The low-current (LC) 1 A per pin rating is matched to signal lines rather than power rails, enabling routing of high-speed differential pairs at data rates commonly seen in 1 Gbps Ethernet, MIPI, or JESD204B serial interfaces.
How does the 0.050" pitch of TFM-138-05-FM-D-LC compare to standard 0.100" pitch connectors in terms of board area savings?
At 0.050" (1.27 mm) pitch, TFM-138-05-FM-D-LC fits 76 dual-row positions in the same board length that a 0.100" pitch connector would use for 38 positions, effectively halving the connector footprint. For a 76-pin interface, this saves approximately 48 mm of PCB length, which is significant in compact embedded modules where board real estate is at a premium.
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