SMH-123-02-TM-S-TR SAMTEC Connector (Other) In Stock
Samtec SMH Series 0.100 inch pitch horizontal surface-mount socket strip with 23 positions per row and 2 rows, yielding 46 total contacts. TM-suffix contact option and horizontal SMT orientation provide a low-profile board-to-board interconnect on the industry-standard 2.54 mm grid. Tape-and-reel packaging enables automated pick-and-place assembly in high-volume production.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 23
- Lifecycle
- ACTIVE
- Datasheet
- SMH-123-02-TM-S-TR Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SMH-123-02-TM-S-TR?
- 0.100 inch (2.54 mm) pitch dual-row horizontal SMT socket with 46 total contacts for efficient board-to-board signal routing
- Horizontal surface-mount orientation lowers assembly stack height compared to vertical pin headers, fitting in enclosures with less than 10 mm PCB-to-PCB clearance
- Tape-and-reel (TR) packaging optimized for automated pick-and-place SMT lines, lowering per-unit handling cost in high-volume runs
- Standard 2.54 mm pitch is compatible with widely available dual-row pin headers, IDC ribbon-cable plugs, and development-board expansion connectors
What is SMH-123-02-TM-S-TR used for?
The SMH-123-02-TM-S-TR is designed for embedded computing and industrial control boards where 46 signals must be routed horizontally between a baseboard and a daughter module in a space-efficient SMT format. Its 0.100 inch dual-row layout accommodates GPIO buses, SPI, UART, and power rails simultaneously, making it a practical single-connector solution for mid-density expansion interfaces on IoT gateways, motor-drive control cards, and data-acquisition modules. Tape-and-reel delivery streamlines high-volume automated assembly and reduces total component cost compared to hand-placed through-hole alternatives.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SMH-123-02-TM-S-TR datasheet?
SMH-123-02-TM-S-TR Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for SMH-123-02-TM-S-TR?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the total contact count and pitch of SMH-123-02-TM-S-TR?
The SMH-123-02-TM-S-TR provides 46 total contacts in a 23-position, 2-row configuration on a 0.100 inch (2.54 mm) pitch. The industry-standard 2.54 mm grid makes this socket directly interchangeable with dual-row pin headers and IDC connectors from Samtec, Molex, TE Connectivity, and other major manufacturers, simplifying multi-source procurement.
How does the TM suffix in SMH-123-02-TM-S-TR differ from a standard SMH socket, and when should it be selected?
The TM suffix in Samtec nomenclature designates a terminal-mount or transition-mount contact variant that adjusts the solder tail geometry for specific PCB pad configurations, typically providing a longer SMT tail for improved solder joint fillet formation on thick PCBs or high-stress mechanical connections. Engineers should select the TM option when standard solder-tail length produces insufficient fillet height on PCBs thicker than 1.6 mm or when the connector is subject to repeated mechanical stress from cable insertion forces.
For a 46-pin expansion interface, when is SMH-123-02-TM-S-TR preferable to a fine-pitch 0.050 inch connector?
A 0.100 inch pitch connector like the SMH-123-02-TM-S-TR is preferable when signal speeds are below 500 MHz and the PCB design uses standard 0.15 mm design rules without HDI via structures. The larger 2.54 mm pitch allows hand-soldering repairs in the field, tolerates slight mating misalignment without contact damage, and avoids the higher PCB fabrication costs associated with the 0.1 mm trace widths required at 0.050 inch (1.27 mm) pitch for 46 contacts.
What are the key procurement considerations for sourcing SMH-123-02-TM-S-TR in production volumes?
Tape-and-reel packaging allows order quantities aligned to full reel multiples, typically 500 to 1000 pieces per reel, which minimizes per-unit cost and avoids cut-tape surcharges common on small-quantity orders. For designs with a 14-week or longer manufacturing lead time, engineers should plan safety stock of at least 4 weeks of demand. Samtec authorized distributors often maintain buffer inventory for standard SMH configurations, reducing effective lead time for quantities up to approximately 5000 pieces.
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