TSM-135-03-SM-DH-A-K-TR SAMTEC Connector (Other) In Stock
SAMTEC TSM-135-03-SM-DH-A-K-TR is a 70-position dual-row surface-mount terminal strip with 0.100" pitch, offering key retention and tape-and-reel packaging for high-volume SMT assembly in rugged board-to-board applications.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 70
- Lifecycle
- ACTIVE
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 70-position dual-row surface-mount terminal strip at 0.100" (2.54 mm) pitch for high pin-count interconnects
- Key (K suffix) alignment feature prevents mismate and ensures correct connector orientation during assembly
- Tape-and-reel (TR suffix) packaging enables automated high-volume SMT pick-and-place assembly
- Dual-height (DH) stacking option supports multiple PCB mating configurations in modular system designs
- Surface-mount termination style eliminates through-hole drilling and simplifies PCB fabrication
Applications
The TSM-135-03-SM-DH-A-K-TR is designed for high-density board-to-board interconnects in industrial computers, embedded systems, and telecommunications equipment where 70 positions at 0.100" pitch are required. Its surface-mount dual-row configuration is used in backplane systems, data acquisition modules, and ruggedized computing platforms. The key retention feature ensures correct mating orientation, making it suitable for field-replaceable module designs requiring reliable, repeatable connections.
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 does the 'K' suffix indicate in TSM-135-03-SM-DH-A-K-TR and why is it important?
The 'K' suffix designates a keying feature that physically prevents mismate between incompatible connectors. This polarization key ensures that the 70-position, 0.100" pitch terminal strip can only mate in the correct orientation, eliminating wiring errors in field-replaceable module applications with multiple similar connectors on the same PCB.
How does the TSM-135-03-SM-DH-A-K-TR's 70-position count compare to lower-pin-count SAMTEC TSM alternatives?
The TSM-135-03-SM-DH-A-K-TR provides 70 positions (35 per row) at 0.100" pitch, making it one of the larger configurations in the TSM series which ranges from 3 to 50+ positions per row. This higher pin count is preferred for backplane and processor expansion cards where mixed power, ground, and signal assignments across 2 rows are required simultaneously.
Is the TSM-135-03-SM-DH-A-K-TR supplied in tape-and-reel and what does this mean for production volume?
Yes, the TR suffix confirms tape-and-reel packaging, which allows automated pick-and-place SMT assembly at production rates exceeding thousands of units per hour. Standard tape-and-reel reels typically contain 500 to 1000 pieces per reel, significantly reducing handling time and placement errors compared to bulk-packaged alternatives in high-volume manufacturing.
What board-to-board stack height does the TSM-135-03-SM-DH-A-K-TR support with its DH designation?
The DH (dual-height) designation in TSM-135-03-SM-DH-A-K-TR indicates support for two distinct mating heights, allowing system designers to accommodate different PCB-to-PCB spacings—typically in the range of 3 mm to 8 mm—within the same connector series. This flexibility is valuable in modular industrial systems where daughter cards of varying component heights must plug into the same backplane header.
Related Guides
ECMF02-4CMX8 Common-Mode Filter with ESD Protection: Selection Guide
Compare ECMF02-4CMX8 vs ECMF02-2AMX6, ECMF04-4HSM10, and other ST ECMF filters. Choose the right 4-channel common-mode filter with ESD protection for USB 2.0.
Jun 20, 2026
AD5204 Quad Digital Potentiometer Selection Guide (2026)
How to choose the right AD5204 quad digital potentiometer: compare 10kΩ vs 100kΩ variants, TSSOP vs SOIC packages, and SPI interface options for your design.
Jun 20, 2026
0402 10uF X5R Decoupling Design Guide for Compact Digital Rails
Application note for using CL05A106MP5NUNC-class 0402 10uF X5R MLCCs in compact digital rail decoupling designs.
Jun 19, 2026
How to Choose an 0805 10uF MLCC for Decoupling and Bulk Capacitance
Selection guide for choosing 0805 10uF MLCCs around CL21A106KOQNNNE, covering derating, dielectric, package, and sourcing checks.
Jun 19, 2026
Why Buy from FindMyChip
About SAMTEC
SAMTEC is a leading electronic component manufacturer. FindMyChip sources SAMTEC ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Response time is incredible — usually under 4 hours. They understand that production lines can't wait.”