TFM-121-03-LM-D-LC SAMTEC Connector (Other) In Stock
SAMTEC TFM-121-03-LM-D-LC is a high-reliability Tiger Eye dual-row terminal strip with 0.050 inch (1.27 mm) pitch and 42 total positions for high-density board interconnects. The Tiger Eye contact technology provides exceptional retention and mating force consistency across thousands of cycles. Available from authorized distributors with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 42
- Lifecycle
- ACTIVE
- Datasheet
- TFM-121-03-LM-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-121-03-LM-D-LC?
- 42-position dual-row Tiger Eye terminal strip with 0.050 inch (1.27 mm) pitch for ultra-high-density SMT board interconnects
- Proprietary Tiger Eye contact geometry delivers superior contact retention force and consistent electrical performance across 1000+ mating cycles
- Low-profile 0.050 inch pitch design enables significantly higher signal density than standard 0.100 inch pitch connectors in the same PCB footprint
What is TFM-121-03-LM-D-LC used for?
The TFM-121-03-LM-D-LC is designed for high-density mezzanine board stacking, FPGA development boards, and compact embedded computing modules requiring many signal connections within a minimal PCB footprint. The 0.050 inch pitch Tiger Eye design is commonly used in aerospace, defense, and medical electronics where high cycle life and reliable contact engagement are non-negotiable. Its dual-row layout supports parallel bus and multi-channel signal routing in mission-critical applications.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TFM-121-03-LM-D-LC datasheet?
TFM-121-03-LM-D-LC Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TFM-121-03-LM-D-LC?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How does the 0.050 inch pitch of the TFM-121-03-LM-D-LC compare to standard 0.100 inch pitch connectors for high-density designs?
The 0.050 inch (1.27 mm) pitch of TFM-121-03-LM-D-LC provides twice the signal density of standard 0.100 inch pitch connectors, allowing 42 positions in the same board length that a 0.100 inch pitch connector uses for 21 positions. This makes it ideal for compact FPGA boards, embedded computing modules, and high-channel-count data acquisition systems.
What does the Tiger Eye contact technology in TFM-121-03-LM-D-LC offer compared to conventional pin-in-socket contacts?
Tiger Eye contacts use a proprietary multi-beam geometry that distributes mating force across multiple contact points, delivering higher retention force and more consistent electrical resistance than conventional single-beam contacts. This contact style is rated for over 1000 mating cycles and maintains low contact resistance in vibration-prone environments such as aerospace and defense electronics.
For a compact mezzanine board design, how many signal lines can TFM-121-03-LM-D-LC accommodate in its dual-row layout?
The TFM-121-03-LM-D-LC provides 42 total positions in a dual-row arrangement at 0.050 inch pitch, supporting up to 42 individual signals or power lines within a compact PCB footprint. This high position count in a 1.27 mm pitch format is suitable for mezzanine stacking in embedded computing and high-speed data interface boards.
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