TFC-135-02-LM-D-A-K-TR SAMTEC Connector (Other) In Stock
The TFC-135-02-LM-D-A-K-TR is a 70-position Samtec Tiger Eye cost-effective terminal strip with a 0.050 inch (1.27 mm) pitch in a dual-row surface-mount configuration, supplied on tape and reel for automated assembly. Key features include the Tiger Eye contact design for reliable low-insertion-force mating, dual-row layout providing 35 contacts per row in a compact 1.27 mm pitch footprint, and standard SMT termination. Designed for high-density board-to-board and cable-to-board signal interconnect in networking, computing, test equipment, and embedded system applications.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 70
- Lifecycle
- ACTIVE
- Datasheet
- TFC-135-02-LM-D-A-K-TR Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 70-position dual-row 0.050" (1.27 mm) pitch Tiger Eye terminal strip for high-density signal interconnect in compact PCB designs
- Tiger Eye contact geometry provides reliable low-insertion-force mating and consistent contact resistance across thousands of mate/unmate cycles
- Surface-mount tape-and-reel packaging enables high-volume automated SMT placement for cost-effective production assembly
- Dual-row layout maximizes signal density per unit PCB length, connecting 70 signals in the footprint of a 35-position single-row connector
Applications
The TFC-135-02-LM-D-A-K-TR is used in high-density signal routing applications including FPGA daughter cards, network line cards, and test-and-measurement probe interfaces where 70 signals must be routed through a space-constrained 0.050 inch pitch SMT connector. Its tape-and-reel format supports automated SMT assembly in production volumes, making it cost-effective for computing backplanes, industrial embedded boards, and data acquisition modules with many parallel signal channels. The Tiger Eye contact design also makes it a reliable choice for board interconnects that undergo periodic field disconnection and reconnection in test fixtures and programmable controller expansion 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
How does the 0.050 inch pitch of the TFC-135-02-LM-D-A-K-TR compare to standard 0.100 inch pitch connectors in terms of board space savings?
The TFC-135-02-LM-D-A-K-TR's 0.050 inch (1.27 mm) pitch is half that of the standard 0.100 inch (2.54 mm) pitch connector family. For a 70-position connector, the 0.050 inch pitch dual-row version spans approximately 22.9 mm in length compared to 45.7 mm for an equivalent 0.100 inch pitch connector, saving about 50% of PCB edge length — a significant advantage in high-density FPGA, network, and computing boards where connector real estate is highly constrained.
What is the Tiger Eye contact design and how does it improve mating reliability in the TFC-135-02-LM-D-A-K-TR?
The Samtec Tiger Eye contact is an eye-of-the-needle or dual-beam spring contact geometry that provides two independent contact points per signal position. This dual-beam design maintains reliable electrical contact even with minor contamination, misalignment, or wear over repeated mating cycles. At the 0.050 inch pitch of the TFC-135-02-LM-D-A-K-TR, where individual contact forces are necessarily smaller than on larger pitch connectors, the Tiger Eye geometry helps maintain consistent contact resistance below 20 mΩ across the service life of the connector.
For a high-speed FPGA interface design, what signal integrity considerations apply when using the TFC-135-02-LM-D-A-K-TR?
At 0.050 inch (1.27 mm) pitch, the TFC-135-02-LM-D-A-K-TR supports signal frequencies suitable for moderate-speed parallel interfaces. The tight 1.27 mm contact spacing increases crosstalk between adjacent signals, so designers routing high-speed differential pairs should assign signals to alternating rows and use ground assignments between critical pairs. For data rates above 500 Mbps per lane, controlled-impedance PCB routing and careful ground return path design are essential to maintain signal integrity through the 70-position dual-row SMT interface.
What tape-and-reel specification does the TFC-135-02-LM-D-A-K-TR use and how does this benefit production manufacturing?
The TFC-135-02-LM-D-A-K-TR is supplied on standard EIA-481 tape-and-reel packaging, with the -TR suffix in the part number indicating this format. Tape-and-reel packaging enables fully automated SMT pick-and-place placement of this 70-position connector, eliminating manual handling that would increase placement time and risk of bent contacts on the 0.050 inch pitch dual-row array. This format is standard for contract manufacturing facilities running reflow soldering lines at production volumes from thousands to millions of units.
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