TSM-121-02-T-DH-A-K-TR SAMTEC Connector (Other) In Stock
SAMTEC TSM-121-02-T-DH-A-K-TR is a 42-position dual-row surface mount terminal strip with 2.54 mm (0.100 inch) pitch and top-center polarization key. Contacts are gold-plated and rated at 3 A per pin and 250 V AC for reliable power and signal distribution. Available in tape-and-reel packaging from stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 42
- Lifecycle
- ACTIVE
- Datasheet
- TSM-121-02-T-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-121-02-T-DH-A-K-TR?
- 42-position dual-row SMT terminal strip on 2.54 mm (0.100 inch) pitch delivering 21 contacts per row for high-density board-to-board interconnects
- Gold-plated contacts rated 3 A per pin and 250 V AC enable mixed power-and-signal use without exceeding connector thermal or dielectric limits
- Top-center (T) polarization key and tape-and-reel (TR) packaging prevent mis-mating and support high-volume automated pick-and-place assembly
What is TSM-121-02-T-DH-A-K-TR used for?
The TSM-121-02-T-DH-A-K-TR is suited for industrial backplane assemblies, embedded processor daughter cards, and FPGA development kits where a 42-pin SMT connector with robust anti-mis-mate features is required. Its dual-height (DH) body provides the board-to-board clearance needed for ribbon cable routing between stacked boards in rackmount and compact control systems.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TSM-121-02-T-DH-A-K-TR datasheet?
TSM-121-02-T-DH-A-K-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TSM-121-02-T-DH-A-K-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What polarization key position does the TSM-121-02-T-DH-A-K-TR use, and why does it matter?
The T suffix indicates a top-center polarization key, meaning the key protrusion sits at the center of the long edge of the 42-position dual-row body. This placement is asymmetric relative to both ends, making it impossible to mate the connector 180 degrees off orientation, preventing damage to 42 signal or power pins during automated assembly or field insertion.
What are the current and voltage ratings of the TSM-121-02-T-DH-A-K-TR contacts?
Each gold-plated contact is rated at 3 A continuous current and 250 V AC working voltage. Across 42 pins in a mixed signal-and-power application, the connector can handle up to 6 dedicated power contacts at 3 A each, delivering 18 A total power capacity on a 5 V rail while keeping the remaining 36 contacts free for signal use.
How does TSM-121-02-T-DH-A-K-TR differ from TSM-121-02-H-DH-A-K-TR in connector selection?
Both parts share identical 42-position dual-row geometry on 2.54 mm pitch with 3 A per pin rating, but differ only in polarization key placement: the T variant positions the key at the top-center while the H variant positions it at the top-high end. Designers choose between them based on the mating housing's keyway alignment, which varies by connector housing manufacturer and prevents cross-mating between different key positions.
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