TSM-125-05-LM-SH-P-TR SAMTEC Connector (Other) In Stock
SAMTEC TSM-125-05-LM-SH-P-TR is a 25-position dual-row surface mount terminal strip at 2.54 mm (0.100 inch) pitch with long-mating contacts, shrouded housing, and polarization features in tape-and-reel packaging. Designed for reliable polarized board-to-board signal connections in industrial and embedded systems. Available from authorized distributors with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 25
- Lifecycle
- ACTIVE
- Datasheet
- TSM-125-05-LM-SH-P-TR Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 25-position dual-row layout at 2.54 mm (0.100") pitch with shrouded housing ensures correct connector orientation and prevents mis-mating during assembly
- Long-mating contacts provide increased engagement depth for improved vibration resistance and reliable electrical continuity in dynamic environments
- Polarized shroud design eliminates reverse-insertion errors in manual and automated PCB assembly processes
- Tape-and-reel packaging enables automated pick-and-place SMT assembly at high production volumes without manual feeding
Applications
The TSM-125-05-LM-SH-P-TR is ideal for polarized board-to-board signal routing in industrial field instruments, embedded processor modules, and automation controller cards where mis-mating prevention is required. Its 25-position dual-row shrouded design at 2.54 mm pitch protects contacts during assembly and ensures reliable orientation-keyed mating in high-vibration environments. Engineers deploy this terminal strip in motor drive interface boards, PLC expansion cards, and modular industrial I/O assemblies requiring keyed, multi-channel interconnects.
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 shrouded housing of the TSM-125-05-LM-SH-P-TR prevent mis-mating in field assembly?
The shrouded housing provides a polarized mechanical key that physically prevents a mating connector from being inserted upside-down or offset by one row. This is critical in field-assembled systems with 25 pins at 2.54 mm pitch, where a single mis-seated row could damage all contacts or create short circuits across adjacent signal and power lines.
For a 25-channel industrial I/O module, what benefit does the long-mating contact design of the TSM-125-05-LM-SH-P-TR provide?
Long-mating contacts engage the mating connector earlier during insertion, providing a longer wipe action that clears surface oxidation and ensures a reliable low-resistance connection below 20 milliohms per contact. In vibration-prone environments such as motor drive panels exposed to 5 G vibration, the deeper engagement prevents intermittent contact that standard-length mating would risk.
What production volume threshold makes the tape-and-reel format of the TSM-125-05-LM-SH-P-TR the correct procurement choice?
The -TR suffix (tape-and-reel) is the appropriate choice for production runs above approximately 500 units, where automated SMT pick-and-place equipment feeds components from a reel at 2.54 mm pitch with consistent placement accuracy. Below that threshold, engineers typically order cut-tape or tube packaging to avoid minimum reel quantity requirements and excess inventory costs.
When would the TSM-125-05-LM-SH-P-TR be specified instead of an unshrouded 25-position terminal strip of the same pitch?
The shrouded polarized version is specified whenever incorrect mating would cause system damage or safety hazards — for example when power and signal pins occupy the same 25-position row and accidental reversal would apply 5 V or 24 V to signal-only circuitry. The shroud adds approximately 1.5 mm to the connector profile but eliminates costly field rework from mis-mated assemblies.
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