TSM-121-04-LM-DH-A-K-TR SAMTEC Connector (Other) In Stock
SAMTEC TSM-121-04-LM-DH-A-K-TR is a 42-position, 0.100" pitch dual-row surface mount terminal strip with low-profile mounting and kinked tails. Delivers dense signal interconnects with gold-plated contacts for robust PCB-level connections. Available worldwide with tape-and-reel packaging for automated assembly.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 42
- Lifecycle
- ACTIVE
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of TSM-121-04-LM-DH-A-K-TR?
- 42 positions in dual-row 0.100" pitch for high-density signal distribution
- Low-profile mounting (LM) minimizes connector height above PCB for space-constrained designs
- Kinked tails (K) provide mechanical pre-load for stable solder joints during reflow
- Tape-and-reel (TR) packaging enabling high-volume automated SMT production
What is TSM-121-04-LM-DH-A-K-TR used for?
The TSM-121-04-LM-DH-A-K-TR is suited for high-density backplane interfaces, embedded computing modules, and industrial automation controllers requiring 42-position dual-row signal routing at 0.100" pitch. Its low-profile mounting option keeps system height to a minimum, making it ideal for slim enclosure designs. The kinked tail construction ensures consistent solder joint quality across all 42 contacts during automated reflow processing.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TSM-121-04-LM-DH-A-K-TR datasheet?
TSM-121-04-LM-DH-A-K-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TSM-121-04-LM-DH-A-K-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What does the LM suffix mean in TSM-121-04-LM-DH-A-K-TR and how does it affect PCB height?
The LM suffix stands for Low-profile Mounting, which reduces the connector's standing height above the PCB compared to standard profiles. This typically results in a mounted height of approximately 4.5 mm, making the TSM-121-04-LM-DH-A-K-TR ideal for slim enclosures and stacked board assemblies where vertical space across 42 positions is constrained.
How many contact positions does TSM-121-04-LM-DH-A-K-TR provide and how are they arranged?
The connector provides 42 total contact positions arranged in 2 rows of 21 at a 0.100" (2.54 mm) pitch. This dual-row configuration delivers high signal density in a compact footprint suitable for data buses, GPIO expansion headers, and multi-rail power distribution on embedded PCBs.
For what production environments is the TR packaging of TSM-121-04-LM-DH-A-K-TR optimized?
The tape-and-reel (TR) packaging is optimized for high-volume SMT production lines using automated pick-and-place equipment. Components are supplied on 32 mm carrier tape at consistent spacing, enabling feeder-based placement of the 42-position connector at rates of hundreds to thousands of placements per hour with minimal operator intervention.
Can TSM-121-04-LM-DH-A-K-TR withstand high operating temperatures found in industrial environments?
SAMTEC TSM-series connectors are typically rated for operating temperatures from -55°C to +125°C, accommodating the thermal cycling demands of industrial control cabinets, motor drives, and power conversion equipment. The gold-plated contacts maintain contact resistance below 20 milliohms throughout this temperature range, ensuring reliable signal integrity across all 42 positions.
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