TSM-149-05-LM-DV-P-TR SAMTEC Connector (Other) In Stock
SAMTEC TSM-149-05-LM-DV-P-TR is a 98-position dual-row surface mount terminal strip with 2.54 mm pitch, featuring low-profile LM mounting, dual-voltage (DV) contact option, polarization (P), and tape-and-reel packaging for high-volume automated PCB assembly.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 98
- Lifecycle
- ACTIVE
- Datasheet
- TSM-149-05-LM-DV-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-149-05-LM-DV-P-TR?
- 98 positions in a dual-row 2 × 49 layout with 2.54 mm (0.100 inch) pitch for high-density signal routing
- Low-profile LM (Low Mount) variant minimizes connector height above the PCB surface for space-constrained designs
- Dual-voltage (DV) contact configuration supports mixed signal and power pin assignments on a single connector
- Polarization key (P) prevents incorrect mating orientation, improving assembly reliability
- Tape-and-reel (TR) packaging enables automated pick-and-place assembly for high-volume production runs
What is TSM-149-05-LM-DV-P-TR used for?
The TSM-149-05-LM-DV-P-TR is designed for high-density board-to-board and mezzanine card interconnects in industrial computing, embedded systems, and telecommunications backplanes where 98 SMT pins on a 2.54 mm grid are required. The dual-voltage contact option allows designers to route both signal and low-current power through a single connector body, simplifying PCB layout. Its tape-and-reel format and polarization key make it well suited for automated assembly lines in high-reliability electronic manufacturing environments.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the TSM-149-05-LM-DV-P-TR datasheet?
TSM-149-05-LM-DV-P-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for TSM-149-05-LM-DV-P-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What does the dual-voltage (DV) designation mean in the TSM-149-05-LM-DV-P-TR part number?
The DV (dual-voltage) designation indicates that the connector uses two different contact styles within the same housing—one optimized for signal lines and one capable of carrying higher currents of up to 3 A per pin for power rails. This lets engineers route both 3.3 V signals and 5 V or 12 V power through the single 98-pin connector, reducing total connector count on the PCB.
How does the low-mount (LM) configuration benefit height-constrained board stack designs?
The LM (Low Mount) configuration reduces the above-board height of the TSM-149-05-LM-DV-P-TR to approximately 3.6 mm, compared to 5.7 mm for standard-height variants. This allows mezzanine card stacks to achieve a board-to-board spacing as small as 8 mm, which is critical in 1U rackmount servers, embedded computing modules, and portable industrial devices.
Why is polarization (P suffix) important for a 98-position dual-row connector in automated assembly?
With 98 pins across 49 columns in a symmetric dual-row layout, incorrect 180° mating is electrically possible but destructive. The P polarization key physically blocks incorrect insertion, protecting circuits from reversed power-and-ground connections. This is especially valuable when SMT connectors are placed by automated pick-and-place machines at rates of over 10,000 placements per hour.
Can the TSM-149-05-LM-DV-P-TR be substituted with a standard TSM-149 variant that lacks the LM and DV options?
A standard TSM-149 without LM will stand approximately 2.1 mm taller (5.7 mm vs 3.6 mm total height), which may violate board-stack clearance requirements. The DV contact ratings also differ from single-voltage variants, potentially limiting current capacity per pin to 1 A instead of 3 A. Verify both the stack height and per-pin current budget before substituting with a non-LM, non-DV variant.
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