TSM-121-04-S-DH-A-K-TR SAMTEC Connector (Other) In Stock
SAMTEC TSM-121-04-S-DH-A-K-TR is a 42-position, .100" pitch surface mount terminal strip with dual-row configuration and gold-plated contacts. Features straight SMT solder tails at 0.100" (2.54 mm) pitch, a dual-high stack height, and tape-and-reel packaging for automated high-volume PCB assembly. Available from stock worldwide with fast shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 42
- Lifecycle
- ACTIVE
- Datasheet
- TSM-121-04-S-DH-A-K-TR Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TSM-121-04-S-DH-A-K-TR?
- 42-position dual-row SMT terminal strip at 0.100" (2.54 mm) pitch providing mid-density interconnect capacity for a wide range of board designs
- Gold-plated contacts (K suffix) deliver contact resistance below 20 mΩ and high reliability over thousands of mating cycles
- Tape-and-reel (TR) packaging is compatible with standard SMT pick-and-place equipment for efficient high-volume automated assembly
What is TSM-121-04-S-DH-A-K-TR used for?
The TSM-121-04-S-DH-A-K-TR is ideal for mid-density backplane-to-daughtercard interconnects and board stacking configurations requiring 42 positions at 0.100" pitch. It suits industrial automation controllers, embedded computing modules, and instrumentation PCBs where a reliable gold-contact SMT header enables long service life. The tape-and-reel format supports seamless integration into automated surface mount production lines.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TSM-121-04-S-DH-A-K-TR datasheet?
TSM-121-04-S-DH-A-K-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TSM-121-04-S-DH-A-K-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the pin count and configuration of TSM-121-04-S-DH-A-K-TR?
TSM-121-04-S-DH-A-K-TR provides 42 total positions in a dual-row layout with 21 pins per row on a 0.100" (2.54 mm) centerline pitch. The dual-high stacking profile accommodates designs that require clearance above the board surface while maintaining a standard 2.54 mm pitch footprint for broad PCB compatibility.
How does TSM-121-04-S-DH-A-K-TR perform in high-cycle mating applications?
With gold-plated contacts (K suffix), TSM-121-04-S-DH-A-K-TR maintains stable contact resistance below 20 mΩ across more than 500 mating cycles under standard SAMTEC test conditions. Gold resists oxidation and fretting corrosion, making this 42-position connector well suited for test fixtures, development boards, and any system where connectors are mated and unmated frequently.
Which applications benefit most from the dual-high stack height of TSM-121-04-S-DH-A-K-TR?
The dual-high (DH) stack height provides extra clearance of approximately 8.89 mm above the PCB surface, accommodating component clearance zones or mating connectors with taller housings. This is particularly useful in backplane designs where ribbon cables, heat sinks, or through-board components occupy space adjacent to the 42-position header, preventing physical interference during mating.
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