TFC-121-02-L-D-A-K SAMTEC Connector (Other) In Stock
SAMTEC TFC-121-02-L-D-A-K is a 42-position Tiger Eye cost-effective terminal strip with 0.050" pitch dual-row layout for high-density signal interconnection. Provides reliable gold-plated contacts with Tiger Eye mating geometry for secure, repeatable connections. Available from stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 42
- Lifecycle
- ACTIVE
- Datasheet
- TFC-121-02-L-D-A-K Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TFC-121-02-L-D-A-K?
- 42-position dual-row 0.050" (1.27 mm) pitch layout concentrates 42 signal lines in a minimal PCB footprint
- Tiger Eye dual-beam contact ensures consistent normal force and reliable mating retention over repeated cycles
- Cost-optimized terminal strip design delivers SAMTEC reliability at a lower price point than premium alternatives
- Gold-plated contact finish minimizes contact resistance and prevents oxidation in long-term deployed applications
What is TFC-121-02-L-D-A-K used for?
The TFC-121-02-L-D-A-K is suited for mid-density board-to-board and daughter-card interconnection in industrial controllers, embedded computing systems, and RF test equipment. With 42 positions on a 0.050" pitch, it provides an efficient single-connector solution for mid-range signal counts that would otherwise require two separate smaller connectors at wider pitches. The connector is also used in modular instrumentation and FPGA mezzanine card designs requiring reliable, repeated mating.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TFC-121-02-L-D-A-K datasheet?
TFC-121-02-L-D-A-K Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TFC-121-02-L-D-A-K?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the position count and pitch specification of TFC-121-02-L-D-A-K?
The TFC-121-02-L-D-A-K offers 42 positions in a dual-row arrangement on a 0.050" (1.27 mm) pitch. This configuration routes 42 signal connections through a single connector whose body length is approximately 21 x 0.050" = 1.05" (26.7 mm), making it a compact solution for mid-density interfaces in embedded control and FPGA-based designs.
How does the 0.050" pitch of TFC-121-02-L-D-A-K compare to 0.100" pitch connectors for a 42-signal interface?
At 0.050" (1.27 mm) pitch, the TFC-121-02-L-D-A-K connector body is approximately half the length of a 0.100" pitch equivalent carrying the same 42 positions. This space saving — roughly 1 inch of PCB length — is significant in compact embedded modules and 42-signal daughter-card interfaces where board area is constrained by mechanical enclosure limits or component placement requirements.
Which FPGA mezzanine or expansion card standards can use TFC-121-02-L-D-A-K as an interface connector?
The TFC-121-02-L-D-A-K at 0.050" pitch is compatible with many custom FPGA mezzanine card (FMC-like) and proprietary expansion bus designs that use 0.050" dual-row terminal strips for low-speed digital I/O signals up to approximately 200 MHz. Designers using 42 FPGA user I/O pins on a single expansion connector will find the TFC-121-02-L-D-A-K a cost-effective alternative to higher-cost high-speed connectors when signal rates remain below 500 Mbps per lane.
What soldering method is recommended for the TFC-121-02-L-D-A-K and does it support lead-free assembly?
SAMTEC TFC-series connectors support both wave soldering and hand-soldering processes, and are compatible with lead-free (RoHS-compliant) Sn-Ag-Cu solder alloys at peak reflow temperatures up to 260°C. The through-hole termination style of the TFC-121-02-L-D-A-K's L variant uses standard 0.050" drill pattern pads, enabling reliable solder joint formation with standard no-clean flux systems used in modern PCB assembly lines.
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