SFM-123-T2-LM-D-A-K-TR SAMTEC Connector (Other) In Stock
SAMTEC SFM-123-T2-LM-D-A-K-TR is a 46-position, dual-row high-reliability socket strip with 0.050" (1.27 mm) pitch for surface mount use. It features a low-mount (LM) body profile and supports 1.0 A per contact at up to 125°C. Available in stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 46
- Lifecycle
- ACTIVE
- Datasheet
- SFM-123-T2-LM-D-A-K-TR Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 46-position dual-row configuration at 0.050" (1.27 mm) pitch enables routing 46 signals in a minimal SMT footprint ideal for space-constrained PCB designs
- Low-mount (LM) body style reduces overall mated stack height, minimizing clearance requirements in thin form-factor assemblies
- Gold-plated stamped contacts rated 1.0 A per contact at 125°C provide low contact resistance and high-cycle durability for high-reliability applications
Applications
The SFM-123-T2-LM-D-A-K-TR is suited for mezzanine card and module-to-baseboard interconnects in embedded computing, communications, and industrial systems requiring a low stack height profile. Its low-mount body reduces the vertical clearance needed between mated boards, enabling tighter card spacing in chassis-constrained multi-board assemblies. The tape-and-reel packaging supports automated SMT placement in high-volume production environments.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What does the LM (low-mount) suffix indicate about the stack height of the SFM-123-T2-LM-D-A-K-TR?
The LM suffix designates a low-mount body that reduces the mated stack height compared to standard body variants. For the SFM series at 0.050" pitch, this typically brings the mated height down to approximately 4.0 mm versus 6.0 mm for taller alternatives. Designers use this variant when board-to-board separation is constrained in thin embedded systems or compact chassis assemblies.
How many signals can the SFM-123-T2-LM-D-A-K-TR carry, and at what current rating per contact?
The SFM-123-T2-LM-D-A-K-TR has 46 contacts arranged in a dual-row 23-per-row layout, with each contact rated for 1.0 A continuous at 125°C. Designers can route up to 46 individual signals or pair adjacent contacts to double current capacity to 2.0 A per channel for low-voltage power distribution within the same connector footprint.
For a portable medical device PCB, why would the SFM-123-T2-LM-D-A-K-TR be selected over a higher-pitch 46-pin alternative?
Medical device PCBs are often constrained to under 50 mm in the shortest dimension. At 0.050" (1.27 mm) pitch, the 46-position SFM-123-T2-LM-D-A-K-TR occupies a connector length of approximately 30 mm versus 60 mm for a comparable 0.100" (2.54 mm) pitch connector. This 30 mm saving allows additional analog front-end circuits or shielding structures to fit within the same PCB area.
Does the tape-and-reel (TR) packaging of the SFM-123-T2-LM-D-A-K-TR support standard SMT pick-and-place feeders?
Yes, the TR suffix indicates tape-and-reel packaging compliant with EIA-481 standards, which fits standard 8 mm or 12 mm SMT feeders depending on the carrier tape width. This allows the 46-position connector to be placed at cycle times under 1 second per unit, eliminating manual handling for production volumes above a few hundred pieces per shift.
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