TFC-121-02-LM-D SAMTEC Connector (Other) In Stock
SAMTEC TFC-121-02-LM-D is a 42-position dual-row Tiger Eye cost-effective terminal strip with 0.050" (1.27 mm) pitch, surface-mount low-profile mounting, for high-density board-to-board signal interconnects in compact electronic assemblies.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 42
- Lifecycle
- ACTIVE
- Datasheet
- TFC-121-02-LM-D 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-LM-D?
- 42-position dual-row layout at 0.050" (1.27 mm) pitch delivers high pin density in a compact PCB footprint for signal-intensive designs
- Tiger Eye contact design provides reliable wiping action and low contact resistance for high-cycle-life board interconnects
- Cost-effective terminal strip construction reduces BOM cost per connection versus premium board-to-board connectors without sacrificing electrical performance
What is TFC-121-02-LM-D used for?
The TFC-121-02-LM-D is suited for dense signal routing in embedded computing modules, test and measurement equipment, and industrial control cards requiring 42 positions at 0.050" pitch. Its dual-row surface-mount low-profile design makes it an efficient choice for daughter-card and mezzanine board interconnects where vertical height clearance is limited. The Tiger Eye contact geometry ensures reliable mating across multiple cycles, supporting field-replaceable boards in instrumentation and data acquisition platforms.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TFC-121-02-LM-D datasheet?
TFC-121-02-LM-D Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TFC-121-02-LM-D?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many total positions does the TFC-121-02-LM-D provide and across how many rows?
The TFC-121-02-LM-D provides 42 total positions arranged in a dual-row configuration at 0.050" (1.27 mm) pitch, yielding 21 pins per row. This high pin count in a compact footprint allows designers to route 42 independent signal lines through a single connector, replacing multiple smaller connectors in space-constrained embedded computing and instrumentation designs.
What design scenarios make the 0.050" pitch of the TFC-121-02-LM-D preferable to 0.100" pitch alternatives for a 42-pin interface?
Choosing the TFC-121-02-LM-D at 0.050" pitch over a 0.100" pitch connector reduces the connector body length by approximately 50%, critical when fitting 42 signal lines on boards smaller than 50 mm x 50 mm. The Tiger Eye contact wiping action maintains reliable electrical contact over repeated mating cycles, and the cost-effective terminal strip design keeps per-position connector cost low for high-volume production runs in consumer and industrial electronics.
In which procurement contexts is the TFC-121-02-LM-D a strong alternative to premium high-density board-to-board connectors?
The TFC-121-02-LM-D is a strong cost-effective alternative when a design requires 42-pin dual-row connectivity at 1.27 mm pitch but does not demand the ruggedized or shielded features of premium mezzanine connectors. It suits high-volume production of industrial controllers, embedded SBCs, and data acquisition modules where a low per-unit connector cost is a priority, and where signal currents remain within the standard terminal strip rating of typically 1 A per contact.
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