TFC-139-02-F-D-A-K SAMTEC Connector (Other) In Stock
Samtec TFC-139-02-F-D-A-K is a 78-position, 2-row male Tiger Eye terminal strip at 1.27 mm (0.050 inch) pitch with a polarization key, delivering cost-effective high-density board interconnect for compact PCB designs.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 78
- Lifecycle
- ACTIVE
- Datasheet
- TFC-139-02-F-D-A-K Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 78-position, 2-row male header at 1.27 mm (0.050 inch) pitch provides a high contact count in a compact terminal strip form factor
- Tiger Eye contact design with polarization key (-K option) prevents mis-mating and ensures reliable signal continuity across all 78 positions
- Cost-effective TFC series construction makes this 78-position strip suitable for high-volume production designs where premium plating is not required
Applications
The TFC-139-02-F-D-A-K is ideal for high-density board-to-board and backplane connections in industrial control systems, embedded computing modules, and test equipment. Its 78-position, 2-row layout at 1.27 mm pitch supports a large number of signal and power lines within a minimal board footprint. The polarization key reduces assembly errors and is particularly valuable in applications where multiple similar connectors are populated on the same PCB.
Specifications
| YTEOL | 9.4 |
| Connector Type | BOARD CONNECTOR |
| Contact Finish Mating | NOT SPECIFIED |
| Contact Gender | MALE |
| Contact Material | NOT SPECIFIED |
| DIN Conformance | NO |
| Filter Feature | NO |
| IEC Conformance | NO |
| MIL Conformance | NO |
| Mixed Contacts | NO |
| Mounting Style | STRAIGHT |
| Mounting Type | BOARD |
| Number Of Connectors | ONE |
| Number of Rows Loaded | 2 |
| Option | GENERAL PURPOSE |
| Rated Current (Signal) | 3.1A |
| Terminal Pitch | 1.27mm |
| Termination Type | SURFACE MOUNT |
| Total Number of Contacts | 78 |
| UL Flammability Code | 94V-0 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8536.69.40.40 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the contact count and pitch of the TFC-139-02-F-D-A-K, and how is it arranged?
The TFC-139-02-F-D-A-K has 78 positions in a 2-row male configuration at 1.27 mm (0.050 inch) pitch, placing 39 contacts per row in a rectangular terminal strip layout for high-density PCB board-to-board interconnect applications.
How does the polarization key (-K) on this Samtec terminal strip prevent assembly errors on a populated PCB?
The -K polarization post creates an asymmetric mechanical feature that blocks 180-degree mis-insertion, which is critical when multiple 78-position, 1.27 mm pitch connectors occupy the same board and could otherwise be confused during hand or automated assembly, preventing costly rework.
For which industrial or embedded computing designs is the TFC-139-02-F-D-A-K a practical connector choice?
This 78-position, 2-row, 1.27 mm pitch terminal strip suits industrial automation backplanes, data acquisition front-end cards, and SBC mezzanine interfaces that need a large signal count with an operating temperature range of -55°C to +125°C and cost-effective construction for moderate production volumes.
When would TFC-139-02-F-D-A-K be selected over a higher-specification Samtec connector series?
Designers choose the TFC cost-effective terminal strip over premium Samtec series when the design needs 78 positions at 1.27 mm pitch but does not require high-cycle mating life (above 100 cycles) or tight impedance control, making it well suited for signal routing in low-to-medium cycle-count applications with budget constraints.
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