TFM-143-21-LM-D SAMTEC Connector (Other) In Stock
SAMTEC TFM-143-21-LM-D is a high-reliability Tiger Eye dual-row terminal strip with 0.050" (1.27 mm) pitch and 43 positions per row, designed for high-density SMT board-to-board interconnects. In stock worldwide with fast shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 86
- Lifecycle
- ACTIVE
- Datasheet
- TFM-143-21-LM-D Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 0.050" (1.27 mm) pitch dual-row terminal strip with 43 positions per row for high-density signal routing
- Tiger Eye contact technology providing reliable mating retention force suitable for high-vibration environments
- Surface-mount LM footprint enabling automated pick-and-place assembly in compact PCB layouts
Applications
The TFM-143-21-LM-D is designed for high-density board-to-board interconnections in telecommunications, networking equipment, and defense electronics where 0.050" pitch allows 43 dual-row positions in a minimal footprint. Its Tiger Eye contact technology ensures secure mating in vibration-prone environments such as aerospace and industrial instrumentation. The SMT configuration supports automated assembly lines, making it suitable for high-volume production of server backplanes and data acquisition modules.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What pitch and pin count does the TFM-143-21-LM-D connector provide?
The TFM-143-21-LM-D features a 0.050" (1.27 mm) pitch with 43 positions per row in a dual-row configuration, providing 86 total pins in a compact footprint ideal for high-density PCB interconnections in networking and telecom equipment.
Which high-reliability applications is TFM-143-21-LM-D suited for in aerospace or defense designs?
The TFM-143-21-LM-D Tiger Eye terminal strip is well-suited for aerospace avionics, military electronics, and ruggedized instrumentation. Its Tiger Eye contact design maintains positive retention under vibration, withstanding mechanical shock levels typical of MIL-STD-810 environments, while the 1.27 mm pitch allows 86 pins in a board area under 60 mm wide.
How does the LM surface-mount footprint of TFM-143-21-LM-D benefit automated PCB assembly?
The LM designator indicates a low-profile surface-mount termination compatible with standard SMT reflow soldering, allowing automated pick-and-place at speeds above 10,000 placements per hour. This eliminates through-hole drilling costs and supports fine-pitch 0.050" layouts typical of server backplane and FPGA daughter card designs.
When should TFM-143-21-LM-D be selected over a 0.100" pitch alternative?
Choose TFM-143-21-LM-D when PCB real estate is constrained and 86 signals must be routed in the space a 0.100" connector would use for 43 pins. The 0.050" pitch cuts connector footprint roughly in half, which is critical in blade server, test and measurement, and miniaturized data acquisition card designs where board space exceeds $10/cm² in fabrication cost.
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