TSM-125-02-STL-DH-A-K-TR SAMTEC Connector (Other) In Stock
SAMTEC TSM-125-02-STL-DH-A-K-TR is a 50-position, 0.100" pitch dual-row surface mount terminal strip with straight-through-hole posts and key-lock feature, enabling secure high-density PCB interconnections.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 50
- Lifecycle
- ACTIVE
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TSM-125-02-STL-DH-A-K-TR?
- 50-position dual-row configuration at 0.100" (2.54 mm) pitch for dense board-level interconnects
- Key-lock (K suffix) polarization feature prevents mismating during assembly and field replacement
- Tape-and-reel (TR) packaging and surface mount with through-hole posts for automated assembly and robust solder joints
What is TSM-125-02-STL-DH-A-K-TR used for?
TSM-125-02-STL-DH-A-K-TR is designed for high-density backplane, daughtercard, and modular I/O applications where 50 contacts are needed in a compact 0.100" footprint. The key-lock feature makes it particularly useful in systems with multiple identical connectors—such as rack-mount servers, industrial PLCs, and embedded computing modules—where incorrect mating must be prevented during maintenance.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TSM-125-02-STL-DH-A-K-TR datasheet?
TSM-125-02-STL-DH-A-K-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TSM-125-02-STL-DH-A-K-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What does the K suffix indicate in TSM-125-02-STL-DH-A-K-TR, and why does it matter for board design?
The K suffix designates a key-lock polarization feature that physically prevents incorrect connector mating. This is critical in systems with multiple adjacent 50-pin connectors, such as multi-board server backplanes, where mistaken insertion could damage I/O circuits operating at 3.3 V or 5 V logic levels.
How many positions per row does TSM-125-02-STL-DH-A-K-TR have, and what is the overall pin count?
The connector has 25 contacts per row arranged in a dual-row configuration for a total of 50 positions, spaced at 0.100" (2.54 mm) pitch. This makes it one of the larger TSM-series terminal strips, suitable for dense signal buses requiring up to 50 separate connections in one footprint.
Is TSM-125-02-STL-DH-A-K-TR suited for automated PCB assembly lines?
Yes, the TR suffix designates tape-and-reel packaging compatible with standard pick-and-place feeders operating at typical placement rates. The straight through-hole posts provide mechanical anchoring during 260°C reflow soldering, minimizing tombstoning and ensuring co-planarity across all 50 pins on the SMT pads.
What is a suitable SAMTEC alternative if 50 positions are more than needed for a design?
For lower pin counts in the same 0.100" dual-row TSM family, TSM-118-01-F-DH (36 positions) or TSM-110-01-F-DH (20 positions) are compatible alternatives. All share the same 2.54 mm pitch and through-hole post mounting approach, allowing PCB footprint scaling without changing the connector series.
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