TSM-121-03-TL-DH-A-K-TR SAMTEC Connector (Other) In Stock
SAMTEC TSM-121-03-TL-DH-A-K-TR is a 42-position dual-row surface-mount terminal strip with 0.100" (2.54 mm) pitch in tape-and-reel packaging. It delivers high-density board-level interconnect with gold-plated contacts for reliable signal and power routing. Available in stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 42
- Lifecycle
- ACTIVE
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TSM-121-03-TL-DH-A-K-TR?
- 42-position dual-row terminal strip at 0.100" (2.54 mm) pitch providing 21 positions per row in a compact SMT footprint
- Gold-plated contacts ensuring contact resistance below 20 mΩ and reliable mating over hundreds of cycles
- Tape-and-reel (TR) packaging for seamless automated pick-and-place assembly at high production volumes
- Surface-mount design compatible with lead-free reflow soldering processes up to 260°C
What is TSM-121-03-TL-DH-A-K-TR used for?
The TSM-121-03-TL-DH-A-K-TR is deployed in high-channel-count embedded systems, multi-axis motor controller boards, and complex backplane daughter-card interconnects where 42 positions accommodate a mix of power, ground, and data signals on a single connector. The 0.100" pitch and dual-row configuration keep the connector body length at approximately 53.34 mm while maintaining compatibility with standard 2.54 mm mating plugs and IDC cable assemblies. Tape-and-reel packaging further simplifies integration into automated SMT assembly workflows for medium and high production volumes.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TSM-121-03-TL-DH-A-K-TR datasheet?
TSM-121-03-TL-DH-A-K-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TSM-121-03-TL-DH-A-K-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What position count and row configuration does the TSM-121-03-TL-DH-A-K-TR use?
The TSM-121-03-TL-DH-A-K-TR is a 42-position dual-row connector with 21 contacts per row arranged at 0.100" (2.54 mm) pitch. The total connector body length is approximately 53.34 mm, making it suitable for applications requiring a large number of signal and power channels at a standard 2.54 mm pitch.
How does a 42-position dual-row connector compare to two smaller connectors in board space usage?
A single 42-position dual-row connector at 0.100" pitch occupies approximately 53.34 mm in length and 5.08 mm in width, whereas two 21-position single-row connectors of the same pitch would each span 53.34 mm in length placed side by side. Combining them into one dual-row unit consolidates the mechanical footprint and eliminates the 5 mm keepout gap that would normally separate two adjacent single-row headers.
Can TSM-121-03-TL-DH-A-K-TR contacts carry power rails alongside data signals?
Yes, contacts in SAMTEC TSM series dual-row strips are typically rated at 3 A per pin, allowing engineers to reserve several of the 42 positions for power and ground distribution while the remaining contacts handle signal lines. This mixed power-and-signal arrangement in a single 53.34 mm body reduces overall connector count and simplifies PCB layout in complex embedded designs.
What is the lead time or packaging advantage of ordering the TSM-121-03-TL-DH-A-K-TR in tape-and-reel format?
The -TR suffix specifies tape-and-reel packaging, typically available on 13-inch reels holding 250 to 500 units per reel. This format enables continuous automated SMT placement without manual re-loading, reducing changeover time per batch and improving throughput for production runs of 500 or more units compared to tube-packaged variants of the same connector.
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