TSM-121-01-H-DH-A-K-TR SAMTEC Connector (Other) In Stock
SAMTEC TSM-121-01-H-DH-A-K-TR is a 42-position dual-row surface mount terminal strip at 2.54 mm pitch with gold-plated contacts and tape-and-reel packaging, suited for high-density SMT board-to-board signal connections.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 42
- Lifecycle
- ACTIVE
- Datasheet
- TSM-121-01-H-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-121-01-H-DH-A-K-TR?
- 42-position dual-row format at 2.54 mm pitch supports up to 21 differential pairs in a single surface mount connector
- H solder tail style provides a specific lead geometry for controlled surface mount PCB land patterns
- Gold-plated (K) contacts ensure contact resistance below 20 milliohms for reliable signal and low-power connections
- Tape-and-reel (TR) packaging enables high-throughput automated SMT pick-and-place assembly
What is TSM-121-01-H-DH-A-K-TR used for?
The TSM-121-01-H-DH-A-K-TR is used in medium-to-high pin count surface mount PCB interconnect applications including embedded processor daughterboards, industrial I/O expansion modules, and multi-channel sensor interface cards requiring 42 reliable signal contacts. Its dual-row 2.54 mm pitch layout routes 21 differential pairs or 42 single-ended signals within a compact footprint compatible with standard 0.1-inch grid PCB layouts. The tape-and-reel format supports automated SMT production in industrial, telecommunications, and consumer electronics manufacturing.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TSM-121-01-H-DH-A-K-TR datasheet?
TSM-121-01-H-DH-A-K-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TSM-121-01-H-DH-A-K-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the total position count and row configuration of the TSM-121-01-H-DH-A-K-TR?
The TSM-121-01-H-DH-A-K-TR has 42 total positions arranged in 2 rows of 21 contacts each at a 2.54 mm (0.100 inch) pitch, supporting up to 21 differential pairs or 42 single-ended signal lines across a single surface mount connector footprint.
Which embedded board designs commonly use the TSM-121-01-H-DH-A-K-TR 42-pin terminal strip?
Embedded processor expansion boards, FPGA breakout cards, and multi-channel ADC interface modules with 42-signal I/O buses are typical users of this connector. The 2.54 mm pitch aligns with standard 0.1-inch header footprints widely used in Arduino, Raspberry Pi, and custom embedded development boards.
How does the TSM-121-01-H-DH-A-K-TR differ from the TSM-119 (38-pin) variant in routing flexibility?
The TSM-121 provides 4 more positions than the TSM-119 (42 vs. 38 pins), adding 2 more positions per row at the same 2.54 mm pitch. Designers benefit from the extra 4 contacts when dedicating 2 pins each to power and ground rails alongside 38 signal lines, reducing the need for a separate power connector.
What is the significance of the DH suffix in the TSM-121-01-H-DH-A-K-TR part number?
The DH suffix indicates a dual-height or double-height solder tail configuration, providing extended lead length of approximately 3 mm to 5 mm below the connector body. This extended tail improves solder joint strength and accommodates thicker PCB stackups or boards with reinforced mounting pads in vibration-prone industrial applications.
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