TSM-121-03-TM-DH-P-TR SAMTEC Connector (Other) In Stock
SAMTEC TSM-121-03-TM-DH-P-TR is a 42-position dual-row surface mount terminal strip with 0.100 inch (2.54 mm) pitch. It features through-mount (TM) termination and tape-and-reel packaging, supporting automated SMT assembly for industrial, telecom, and embedded computing board-to-board interconnect applications.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 42
- Lifecycle
- ACTIVE
- Datasheet
- TSM-121-03-TM-DH-P-TR Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TSM-121-03-TM-DH-P-TR?
- 42 positions in dual-row 0.100" (2.54 mm) pitch, 21 pins per row
- Through-mount (TM) termination for secure PCB attachment during SMT reflow soldering
- Tape-and-reel (TR) format enabling automated high-volume pick-and-place assembly
- Gold-plated contacts for stable low-resistance interconnect performance over extended mating life
- Dual-row design consolidating 42 signals in a compact standard-pitch PCB footprint
What is TSM-121-03-TM-DH-P-TR used for?
The TSM-121-03-TM-DH-P-TR serves industrial automation controllers, single-board computers, and network interface modules that require 42-position dual-row 0.100 inch pitch connectors for high-density signal routing. Its through-mount termination provides additional mechanical retention during board handling and reflow, making it suitable for boards exposed to vibration or shock in field-deployed equipment. The tape-and-reel format integrates seamlessly into automated SMT production workflows for medium-to-high-volume manufacturing.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TSM-121-03-TM-DH-P-TR datasheet?
TSM-121-03-TM-DH-P-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TSM-121-03-TM-DH-P-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What does the TM (through-mount) termination on TSM-121-03-TM-DH-P-TR mean for PCB assembly?
TM denotes through-mount termination, meaning the TSM-121-03-TM-DH-P-TR has solder tails that pass through the PCB, providing added mechanical anchoring compared with surface-only termination. This improves resistance to vibration and mechanical stress in field-deployed systems, while maintaining compatibility with standard 2.54 mm pitch reflow or wave soldering processes.
How does the 42-position TSM-121 fit into a mixed power and signal connector scheme on a single PCB?
The 42-position dual-row layout at 0.100 inch (2.54 mm) pitch on the TSM-121-03-TM-DH-P-TR provides 21 contacts per row, enough to route multiple SPI, I2C, UART, or GPIO signals alongside dedicated ground and power rails, all through a single mating connector interface in industrial or embedded computing board designs.
How does TSM-121-03-TM-DH-P-TR compare with TSM-120 or TSM-122 variants when selecting for pin count flexibility?
The TSM-121-03-TM-DH-P-TR offers 42 positions, sitting between the 40-position TSM-120 and 44-position TSM-122 in the SAMTEC TSM series. All share the same 0.100 inch (2.54 mm) dual-row footprint, so designers can step up or down by 2-pin increments without changing PCB layout geometry, easing pin-count scaling across product revisions.
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