TSM-125-02-FM-SH-A SAMTEC Connector (Other) In Stock
SAMTEC TSM-125-02-FM-SH-A is a 25-position dual-row surface mount terminal strip at 0.100 inch (2.54 mm) pitch with friction-lock contacts, single-row horizontal mounting, and 50 total gold-plated pins for reliable PCB edge interconnection. Suitable for industrial control, test, and embedded system interfaces. Available from authorized distributors with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 25
- Lifecycle
- ACTIVE
- Datasheet
- TSM-125-02-FM-SH-A Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 25-position dual-row SMT layout at 0.100 inch (2.54 mm) pitch provides 50 contacts with broad cable ecosystem compatibility
- Single-row horizontal (SH) orientation lowers connector profile for board-edge cable routing without adding vertical height
- Gold-plated mating contacts deliver low contact resistance and corrosion resistance across -55°C to +125°C operating range
Applications
The TSM-125-02-FM-SH-A is designed for surface-mount board-edge interfaces in industrial controller backplanes, signal conditioning modules, and benchtop test instruments where a 50-pin 0.100 inch pitch connection must be made horizontally to a cable or mating header. Its standard 2.54 mm pitch is compatible with a wide range of ribbon cable assemblies and mating socket strips, simplifying cable sourcing for both prototype and production builds.
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 SH suffix on TSM-125-02-FM-SH-A indicate, and how does horizontal orientation benefit cable routing?
The SH suffix designates a single-row horizontal contact orientation, meaning the connector body is mounted flat to the PCB surface with pins exiting horizontally toward the board edge. This orientation keeps the connector profile low, typically under 5 mm above the PCB surface, and routes cables parallel to the board plane. This is advantageous in enclosures with limited vertical clearance, such as 1U rack panels, where a vertical header would foul the lid.
For a 50-signal industrial backplane interface, why is TSM-125-02-FM-SH-A well suited over a through-hole equivalent?
The TSM-125-02-FM-SH-A uses SMT pads rather than through-hole pins, eliminating the need to drill 50 holes in the PCB and reducing overall board thickness. At 0.100 inch (2.54 mm) pitch over 25 dual-row positions, it occupies approximately 61 mm of board length while supporting a full 50-signal backplane interface. Surface-mount construction also improves automated assembly throughput and is compatible with no-clean lead-free reflow processes at up to 260°C.
How does the FM (friction-mount) feature of TSM-125-02-FM-SH-A compare to connectors with latching mechanisms for serviceability?
The FM (friction-mount) retention relies on the mating socket's contact grip rather than a mechanical latch. This simplifies mating and unmating to a single pull action, which speeds up cable reconnection during board servicing or test fixture changes. In environments with fewer than 50 reconnection cycles over the product life, friction retention provides adequate pull-out force of typically 0.3 to 0.5 N per pin, totaling 15 to 25 N across the 50-pin interface.
Which cable assembly types mate with TSM-125-02-FM-SH-A, and how quickly can replacements be sourced?
TSM-125-02-FM-SH-A mates with standard 50-conductor 0.100 inch pitch IDC ribbon cable assemblies or individual socket housings, both of which are stocked by dozens of global distributors. Standard 50-conductor ribbon cables are available in cut lengths from 100 mm to over 1 meter, with pricing typically below 5 USD per assembly for quantities over 10 pieces, and same-day shipping from major distributors in North America and Europe.
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