TSM-121-03-H-DH-A-K-TR SAMTEC Connector (Other) In Stock
SAMTEC TSM-121-03-H-DH-A-K-TR is a 42-position, 0.100" pitch dual-row surface mount terminal strip with tall mating height and keying feature. Supports high-reliability daughter card interconnects with error-proof alignment. Available in tape-and-reel packaging with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 42
- Lifecycle
- ACTIVE
- Datasheet
- TSM-121-03-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-121-03-H-DH-A-K-TR?
- 42-position dual-row surface mount terminal strip with 0.100" (2.54 mm) pitch for versatile high-density signal routing
- Keying feature (K suffix) prevents mismating between adjacent connectors during automated PCB assembly
- Tall mating height (H) variant with tape-and-reel (TR) delivery optimized for high-volume SMT production
What is TSM-121-03-H-DH-A-K-TR used for?
The TSM-121-03-H-DH-A-K-TR is used in industrial automation, embedded computing, and telecommunications equipment requiring reliable 42-pin dual-row SMT connections. Its keying feature ensures error-free daughter card installation in multi-connector board designs, reducing field failures. The tall mating height variant accommodates board-to-board clearance requirements in stacked PCB assemblies with component height constraints.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TSM-121-03-H-DH-A-K-TR datasheet?
TSM-121-03-H-DH-A-K-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TSM-121-03-H-DH-A-K-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the pin count and pitch of the TSM-121-03-H-DH-A-K-TR connector?
The TSM-121-03-H-DH-A-K-TR is a 42-position connector with 21 pins per row in a dual-row layout at 0.100" (2.54 mm) pitch. This provides a total of 42 signal contacts, suitable for high-density module and daughter board interfaces in industrial and embedded applications.
How does the keying (K) option on the TSM-121-03-H-DH-A-K-TR reduce assembly errors?
The K keying feature adds a physical asymmetry to the connector housing that prevents incorrect mating with unkeyed or differently keyed connectors. On boards with multiple 42-pin headers at 0.100" pitch, this eliminates polarity and orientation errors during assembly, reducing costly rework on populated PCBs in production environments.
Can the TSM-121-03-H-DH-A-K-TR be used in automated pick-and-place production?
Yes. The TSM-121-03-H-DH-A-K-TR is supplied in tape-and-reel (TR) packaging fully compatible with automated SMT pick-and-place equipment. The surface mount termination supports standard reflow soldering processes, and the consistent 0.100" pitch spacing ensures repeatable placement accuracy in high-volume PCB assembly lines.
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