TSM-121-01-STL-DH-A-K-TR SAMTEC Connector (Other) In Stock
SAMTEC TSM-121-01-STL-DH-A-K-TR is a 42-position, 0.100" pitch dual-row surface mount terminal strip with a short-tail low-profile configuration and kinked tails. Engineered for stable SMT solder joints across 42 positions in space-constrained PCB assemblies. Supplied in tape-and-reel format for high-volume automated manufacturing worldwide.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 42
- Lifecycle
- ACTIVE
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 42 positions in dual-row 0.100" pitch for high-density signal and power distribution
- Short-tail low-profile (STL) design reduces overall connector height for slim PCB stack-up requirements
- Kinked tails (K) ensure mechanical pre-load and positional stability during reflow soldering
- Tape-and-reel (TR) format compatible with standard SMT pick-and-place feeder systems
Applications
The TSM-121-01-STL-DH-A-K-TR suits high-density backplane interconnects, processor expansion boards, and FPGA mezzanine cards that demand 42-position dual-row connectivity at 0.100" pitch with minimal mounting height. The short-tail low-profile housing reduces PCB-to-PCB spacing in stacked assemblies, enabling tighter system packaging. Its kinked SMT tails support lead-free reflow processes while maintaining precise alignment across all 42 contact positions.
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 STL suffix in TSM-121-01-STL-DH-A-K-TR affect the connector's mounting height?
STL stands for Short-Tail Low-profile, specifying a reduced tail length and lower housing height compared to standard variants. This configuration typically yields a mounted height of approximately 3.0 mm above the PCB surface, enabling tighter board-to-board spacing in stacked 42-position assemblies for slim embedded computing and telecommunications equipment.
For a 42-position dual-row bus on an FPGA carrier board, why choose TSM-121-01-STL-DH-A-K-TR over a through-hole alternative?
The surface mount construction of TSM-121-01-STL-DH-A-K-TR eliminates through-hole drilling and wave soldering, simplifying PCB fabrication and enabling component placement on both sides of the board. For 42 positions at 0.100" pitch, the SMT approach reduces layer routing complexity and supports finer via structures, while the kinked tails provide mechanical stability comparable to through-hole retention force during thermal cycling.
What current and voltage ratings apply to the TSM-121-01-STL-DH-A-K-TR?
SAMTEC TSM-series surface mount terminal strips are rated for voltages up to 125 V AC/DC and current capacity of approximately 3 A per contact at ambient temperature. For the 42-position TSM-121-01-STL-DH-A-K-TR, total current distribution across multiple pins allows shared power and ground lines to handle higher aggregate currents in mixed signal-and-power PCB designs.
How does sourcing TSM-121-01-STL-DH-A-K-TR in tape-and-reel benefit a production procurement manager?
Tape-and-reel packaging provides consistent component orientation for automated feeders, reducing placement errors for 42-position connectors in high-volume runs. Reels typically contain 500 or more pieces, lowering per-unit handling cost and allowing MRP systems to schedule replenishment based on reel quantity breaks, which simplifies just-in-time inventory management for contract electronics manufacturers.
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