TFC-135-02-FM-D-A SAMTEC Connector (Other) In Stock
SAMTEC TFC-135-02-FM-D-A is a 70-position dual-row Tiger Eye cost-effective terminal strip with 0.050 inch pitch, delivering 140 total contacts for high-density board-to-board interconnect in industrial, computing, and telecom applications.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 70
- Lifecycle
- ACTIVE
- Datasheet
- TFC-135-02-FM-D-A Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 70-position dual-row configuration at 0.050 inch (1.27 mm) pitch provides 140 total contacts for high-density PCB-to-PCB signal routing in compact assemblies
- Tiger Eye contact mechanism delivers a wiping mating action that maintains low contact resistance and reliable electrical connectivity over many insertion cycles
- Cost-effective design reduces per-pin connector cost compared to premium mezzanine alternatives, making it suitable for price-sensitive high-volume production without sacrificing signal integrity
Applications
The TFC-135-02-FM-D-A is well-suited for high-density board-to-board interconnect in embedded computing systems, industrial backplanes, and telecom line cards where 140 contacts at 0.050 inch pitch are required. Its Tiger Eye contact technology ensures reliable mating performance in applications such as FPGA expansion cards and multi-channel data acquisition modules that experience frequent board swaps. This connector is also used in test-and-measurement platforms and communication interface boards where routing many signal channels between stacked PCBs efficiently and cost-effectively is a priority.
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
How many total contacts does TFC-135-02-FM-D-A provide, and how are they arranged?
The TFC-135-02-FM-D-A is a dual-row terminal strip with 70 positions per row, providing 140 total contacts arranged in 2 rows at 0.050 inch (1.27 mm) pitch. This dual-row layout at fine pitch enables high-density board-to-board interconnect in a relatively small PCB footprint suitable for compact embedded and industrial designs.
What reliability benefit does the Tiger Eye contact design provide in the TFC-135-02-FM-D-A?
The Tiger Eye contact in the TFC-135-02-FM-D-A uses a dual-beam wiping action during each mating event, which clears oxidation and debris from the contact surface and maintains low contact resistance—typically under 20 milliohms per contact. This wiping mechanism extends reliable electrical performance over hundreds of mating cycles, reducing the risk of intermittent signals in applications with frequent board disconnects such as test fixtures or field-replaceable modules.
For which types of designs is the 70-position TFC-135-02-FM-D-A better suited than a 48-position or 100-position connector?
The TFC-135-02-FM-D-A with 140 contacts is optimal for designs that need more than 96 contacts (48-position dual-row) but fewer than 200 contacts (100-position dual-row), such as 64-bit parallel data buses with additional control and power lines, or 128-channel sensor arrays with a few power rails. Selecting the exact 70-position variant avoids wasted pins and unnecessary board space compared to larger alternatives.
How does the FM variant designation affect the PCB assembly process for TFC-135-02-FM-D-A?
The FM designation in TFC-135-02-FM-D-A indicates a through-hole mount with a specific termination style suited to wave soldering or selective soldering processes. This means the 140-pin connector can be placed using standard through-hole insertion equipment and soldered in bulk on a wave solder line, supporting efficient high-volume PCB assembly without requiring manual soldering of individual pins.
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