TFM-121-04-H-D-LC SAMTEC Connector (Other) In Stock
The SAMTEC TFM-121-04-H-D-LC is a high-reliability Tiger Eye terminal strip with 0.050" (1.27 mm) pitch in a dual-row, high-profile configuration with board-lock retention for secure SMT mounting. Offering 42 positions in a compact footprint, it provides consistent mating performance for high-density board-to-board interconnections. Available from stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 42
- Lifecycle
- ACTIVE
- Datasheet
- TFM-121-04-H-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-121-04-H-D-LC?
- Tiger Eye dual-beam contacts on 0.050" (1.27 mm) pitch deliver reliable low contact resistance over hundreds of mate/unmate cycles, ensuring signal integrity in high-speed interfaces
- Board-lock (LC) retention posts anchor the 42-position dual-row connector mechanically to the PCB, protecting solder joints from pull-out and vibration forces
- High-profile (H) design provides additional mating clearance for daughtercard and mezzanine stacking configurations in compact embedded systems
What is TFM-121-04-H-D-LC used for?
The TFM-121-04-H-D-LC is designed for high-density mezzanine board-to-board connections in embedded computing modules, FPGA development platforms, and high-speed data acquisition systems. Its 0.050" pitch and 42-position dual-row layout allow engineers to route dozens of signal lines within a very small PCB area, reducing system size and overall board real estate. The board-lock feature makes it well suited for rack-mounted and portable instrumentation where mechanical shock and vibration could otherwise compromise connector retention.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TFM-121-04-H-D-LC datasheet?
TFM-121-04-H-D-LC Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TFM-121-04-H-D-LC?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the board-lock feature on TFM-121-04-H-D-LC protect the solder joints during repeated mating in a rack-mount system?
The board-lock posts insert into PCB drill holes and create a mechanical anchor that carries shear and pull-out loads independently of the SMT solder joints on the 42-position, 0.050" pitch connector. In rack-mount equipment where daughtercards may be inserted and removed many times during maintenance, this prevents solder joint cracking and ensures reliable contact over the full -55°C to +125°C operating temperature range.
For an FPGA mezzanine design requiring 40+ signals, how does TFM-121-04-H-D-LC compare to a 0.100" pitch connector in PCB area?
The TFM-121-04-H-D-LC at 0.050" (1.27 mm) pitch routes 42 signals in approximately the same connector length that a 0.100" pitch dual-row connector would need for only 22 positions, providing nearly double the signal density. This reduction in connector footprint frees PCB space for decoupling capacitors, power planes, or additional routing channels in FPGA carrier cards and high-channel-count data acquisition modules.
Which procurement considerations apply when sourcing TFM-121-04-H-D-LC for a production run requiring RoHS compliance?
The TFM-121-04-H-D-LC is available in RoHS-compliant, Pb-free versions and can be ordered in tape-and-reel quantities for automated SMT assembly lines. Lead times for SAMTEC Tiger Eye terminal strips typically range from 2 to 8 weeks depending on quantity, so placing orders for production volumes at least 6 weeks ahead of the build schedule is advisable to avoid delays on the 42-position dual-row connector.
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