TFC-138-02-FM-D-K-TR SAMTEC Connector (Other) In Stock
SAMTEC TFC-138-02-FM-D-K-TR is a 76-position dual-row Tiger Eye cost-effective terminal strip on a 0.050" pitch with FM right-angle mounting, K keying, and tape-and-reel packaging. Delivers ultra-high-density board-edge connectivity for complex signal interfaces. Available worldwide with competitive pricing.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 76
- Lifecycle
- ACTIVE
- Datasheet
- TFC-138-02-FM-D-K-TR Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 76 positions in a dual-row configuration on 0.050" (1.27 mm) pitch for ultra-high-density board-edge interfaces
- Tiger Eye bifurcated contact ensures reliable mating with consistent wiping force across all 76 positions
- K keying prevents incorrect mating orientation on boards with multiple adjacent high-position-count connectors
- FM right-angle mounting provides board-edge access suitable for panel-mount or side-access cable connections
- Tape-and-reel (TR) packaging supports automated high-volume SMT assembly
Applications
The TFC-138-02-FM-D-K-TR is designed for high-density processor expansion, FPGA I/O breakout, and backplane edge-connector applications where 76 positions at 0.050" pitch consolidate a large number of signal lines into a compact board-edge footprint. It suits high-speed data acquisition cards, GPU daughter boards, and FPGA development modules requiring right-angle cable access from the board edge through a panel cutout. The K keying feature makes it reliable in multi-connector assemblies such as mezzanine card racks where multiple TFC connectors are installed side-by-side with different signal assignments.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for TFC-138-02-FM-D-K-TR:
Board Connector, 76 Contact(s), 2 Row(s), Male, Straight, 0.05 inch Pitch, Surface Mount Terminal, Black Insulator
Frequently Asked Questions
How many signal lines can TFC-138-02-FM-D-K-TR carry and what is its pitch?
The TFC-138-02-FM-D-K-TR carries 76 positions arranged in 2 rows on a 0.050" (1.27 mm) pitch. This dual-row 0.050" layout accommodates 76 independent signal or power lines in a board-edge footprint that is approximately 48 mm long, making it a high-density alternative to multiple lower-count connectors on FPGA boards, data-acquisition cards, and high-bandwidth processor expansion modules.
In a multi-connector FPGA expansion board, why is the K keying option of TFC-138-02-FM-D-K-TR important?
On FPGA expansion boards with several adjacent 76-position TFC connectors assigned to different I/O banks operating at different voltages such as 1.8 V, 2.5 V, and 3.3 V, the K keying option physically prevents a 76-position cable assembly from being inserted into the wrong connector. Without keying, identical-looking connectors at 0.050" pitch create a high risk of voltage mismatch that can permanently damage FPGA I/O cells rated for only 1.8 V if connected to a 3.3 V bank.
How does FM right-angle mounting of TFC-138-02-FM-D-K-TR simplify enclosure integration for rack-mount cards?
The FM right-angle termination routes the 76-position cable connector horizontally toward the board edge, allowing the mating cable to exit through a slot in the rack-mount enclosure panel without requiring extra vertical height above the PCB. In 1U rack-mount cards where internal component height is limited to approximately 25 mm, the right-angle orientation keeps the connector profile below the chassis lid, while the tape-and-reel format ensures the connector can be placed and reflowed by automated SMT equipment alongside other components on the same assembly run.
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