TFC-139-02-F-D-A SAMTEC Connector (Other) In Stock
The SAMTEC TFC-139-02-F-D-A is a 78-position dual-row Tiger Eye cost-effective terminal strip with 0.050-inch pitch for high-density PCB signal termination in through-hole assemblies. Its Tiger Eye contacts ensure reliable low-resistance mating through a self-wiping interface. Available from stock worldwide with fast shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 78
- Lifecycle
- ACTIVE
- Datasheet
- TFC-139-02-F-D-A Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TFC-139-02-F-D-A?
- 78-position dual-row terminal strip at 0.050-inch (1.27 mm) pitch, offering 39 contacts per row for dense board-level signal routing
- Tiger Eye self-wiping contact mechanism delivers consistent low contact resistance across all 78 positions after each insertion and removal
- Cost-effective series design lowers BOM cost compared to premium gold-plated terminal strips while maintaining accurate 0.050-inch pitch geometry
What is TFC-139-02-F-D-A used for?
The TFC-139-02-F-D-A addresses high-density signal interconnect needs in line cards, backplane modules, and multi-channel embedded computing boards requiring 78 through-hole positions in a compact footprint. Its Tiger Eye wiping contacts and 0.050-inch pitch make it a budget-efficient alternative in production-volume assemblies for telecommunications infrastructure and industrial control systems.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TFC-139-02-F-D-A datasheet?
TFC-139-02-F-D-A Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TFC-139-02-F-D-A?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How are the 78 positions of the TFC-139-02-F-D-A distributed across its dual-row layout at 0.050-inch pitch?
The TFC-139-02-F-D-A arranges 78 positions in 2 rows of 39 contacts each at a 0.050-inch (1.27 mm) pitch, concentrating a large signal count into a body length of approximately 1.95 inches. This configuration is suited for backplane and daughter-card applications where 78 independent signal lines must be interconnected within a narrow board zone.
In a modular industrial controller where daughter cards are swapped during maintenance, what benefit does the Tiger Eye contact provide on TFC-139-02-F-D-A?
Tiger Eye contacts generate a lateral wiping action as the mating header engages the 78-position socket, removing oxide layers and surface contaminants from each contact interface. For daughter cards replaced during field maintenance, this self-cleaning mechanism sustains reliable contact resistance across all 78 positions without requiring gold plating, reducing both cost and long-term maintenance concerns.
How does TFC-139-02-F-D-A differ from TFC-138-02-FM-D-A in position count, and which fits a 78-signal design better?
The TFC-139-02-F-D-A has 78 positions versus 76 positions on the TFC-138-02-FM-D-A, both at 0.050-inch pitch. For a design requiring exactly 78 signal connections, the TFC-139-02-F-D-A is the correct part, avoiding the need to leave 2 contacts unused or redesign the interface to fit a 76-position footprint.
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