TSM-121-01-S-DH-A-K-TR SAMTEC Connector (Other) In Stock
SAMTEC TSM-121-01-S-DH-A-K-TR is a 42-position single-row surface-mount terminal strip with 0.100 inch (2.54 mm) pitch, 30 µin gold over nickel mating contacts, phosphor bronze construction, and tape-and-reel packaging for precise automated SMT assembly.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 42
- Lifecycle
- ACTIVE
- Datasheet
- TSM-121-01-S-DH-A-K-TR Datasheet PDF
- Category
- Connector
- Price
- From $4.6700(MOQ 250)
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TSM-121-01-S-DH-A-K-TR?
- 42-position single-row SMT terminal strip with 0.100 inch (2.54 mm) pitch routes 42 signals in a linear footprint compatible with standard 0.1 inch grid PCB layouts
- 30 µin gold over 50 µin nickel mating contact finish delivers low contact resistance and corrosion resistance for extended mating life beyond standard tin-plated alternatives
- Phosphor bronze contact material provides excellent spring resilience and consistent mating force retention across hundreds of insertion cycles
- Tape-and-reel (TR) packaging supports continuous automated pick-and-place assembly, ideal for high-volume SMT production lines
What is TSM-121-01-S-DH-A-K-TR used for?
TSM-121-01-S-DH-A-K-TR is used in high-density interface headers on embedded processor boards, FPGA development platforms, and industrial communication modules where a 42-position 2.54 mm pitch SMT strip with gold-plated contacts is needed. The gold over nickel mating finish makes it suitable for test sockets, high-reliability compute module connectors, and clinical medical devices where contact corrosion or intermittent connections would be unacceptable. Its tape-and-reel packaging ensures consistent automated placement in volume production of IoT gateways, networking equipment, and defense electronics.
What are the specifications of TSM-121-01-S-DH-A-K-TR?
| YTEOL | 9.1 |
| Connector Type | BOARD CONNECTOR |
| Contact Finish Mating | GOLD (30) OVER NICKEL (50) |
| Contact Finish Termination | Matte Tin (Sn) - with Nickel (Ni) barrier |
| Contact Gender | MALE |
| Contact Material | PHOSPHOR BRONZE |
| DIN Conformance | NO |
| Filter Feature | NO |
| IEC Conformance | NO |
| JESD-609 Code | e3 |
| MIL Conformance | NO |
| Mating Information | MULTIPLE MATING PARTS AVAILABLE |
| Mixed Contacts | NO |
| Mounting Style | RIGHT ANGLE |
| Mounting Type | BOARD |
| Number Of Connectors | ONE |
| Number of Rows Loaded | 2 |
| Option | GENERAL PURPOSE |
| Rated Current (Signal) | 7A |
| Terminal Pitch | 2.54mm |
| Termination Type | SURFACE MOUNT |
| Total Number of Contacts | 42 |
| UL Flammability Code | 94V-0 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
| HTS Code | 8536.69.40.40 |
Where can I find the TSM-121-01-S-DH-A-K-TR datasheet?
TSM-121-01-S-DH-A-K-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TSM-121-01-S-DH-A-K-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
How many positions does TSM-121-01-S-DH-A-K-TR have, and what mating contact finish does it use to ensure reliability?
TSM-121-01-S-DH-A-K-TR has 42 positions with a mating contact finish of 30 µin gold over 50 µin nickel on phosphor bronze material. The 30 µin gold plating provides very low contact resistance (typically under 10 mΩ), excellent corrosion resistance, and is specified for applications requiring at least 500 mating cycles — significantly better than standard matte-tin finishes which typically derate after 50 to 100 cycles in humid environments.
What contact material does TSM-121-01-S-DH-A-K-TR use, and why is phosphor bronze preferred over brass for SMT terminal strips?
TSM-121-01-S-DH-A-K-TR uses phosphor bronze contacts, which have a higher tensile strength (typically 550 MPa to 700 MPa) and better fatigue resistance than standard brass (typically 350 MPa to 500 MPa). For a 42-position SMT strip that undergoes repeated mating with daughter cards or test fixtures, phosphor bronze's superior spring-back properties maintain consistent normal force and contact resistance over the connector's service life — an important advantage in test equipment and field-serviceable modular electronics.
For a medical device PCB requiring 42 signal lines with gold contacts, how does TSM-121-01-S-DH-A-K-TR reduce regulatory risk compared to tin-finished alternatives?
Gold-plated contacts on TSM-121-01-S-DH-A-K-TR eliminate the whisker growth risk associated with pure tin (Sn) finishes, which IEC and FDA guidance both flag as a potential reliability concern in long-life medical devices. The 30 µin gold over 50 µin nickel barrier plating also prevents tin oxide buildup that can cause elevated contact resistance over time, helping medical device OEMs demonstrate consistent electrical performance during IEC 60601 and ISO 14971 reliability testing without tin-whisker risk mitigation procedures.
When a design switches from a through-hole 42-pin single-row header to TSM-121-01-S-DH-A-K-TR, what assembly process changes are required?
Switching to the SMT TSM-121-01-S-DH-A-K-TR eliminates through-hole drilling for 42 holes (saving approximately 0.8 mm of anti-pad clearance per hole), removes the need for wave or selective soldering, and enables placement by standard pick-and-place machines using the tape-and-reel carrier. Reflow profiles for the matte-tin termination contact require a peak temperature of 245°C to 260°C for 10 s to 30 s — compatible with SAC305 lead-free paste and standard J-STD-001 Class 2 or 3 process controls used on IPC-compliant medical and industrial PCBs.
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About SAMTEC
SAMTEC is a leading electronic component manufacturer. FindMyChip sources SAMTEC ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 250+ | $6.4500 | $1612.50 |
| 500+ | $5.9700 | $2985.00 |
| 1000+ | $4.6700 | $4670.00 |
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