SFM-123-02-F-D-LC SAMTEC Connector (Other) In Stock
SAMTEC SFM-123-02-F-D-LC is a 46-position dual-row high-reliability surface-mount socket strip with 0.050-inch (1.27 mm) pitch, offering low-profile mating and rugged contact retention for dense PCB interconnects. Available with worldwide shipping for embedded and telecom applications.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 46
- Lifecycle
- ACTIVE
- Datasheet
- SFM-123-02-F-D-LC Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of SFM-123-02-F-D-LC?
- 46 positions in a dual-row 0.050-inch (1.27 mm) pitch layout achieving twice the signal density of 0.100-inch connectors in the same PCB footprint
- High-reliability socket contacts with gold plating and tight tolerances ensure low contact resistance below 20 mΩ and consistent insertion across 500+ mating cycles
- Surface-mount (F) termination enables reflow soldering and full SMT assembly compatibility without through-hole drilling
- Low-current (LC) variant optimized for signal-level applications with reduced pin mass, minimizing thermal stress on fine-pitch pads during reflow
- Dual-row (D) configuration allows mixed signal and power routing within a single 1.27 mm pitch connector body
What is SFM-123-02-F-D-LC used for?
The SFM-123-02-F-D-LC is designed for high-density mezzanine board-to-board interconnects in telecom blades, FPGA daughter cards, and RF front-end modules where 0.050-inch pitch reduces PCB real estate by 50% compared to 0.100-inch alternatives. Its high-reliability contacts and 500-cycle mating durability make it suitable for field-serviceable computing modules that require repeated insertion during maintenance. The surface-mount footprint also makes it a natural choice for ruggedized military and aerospace avionics PCBs operating across extended temperature ranges.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Where can I find the SFM-123-02-F-D-LC datasheet?
SFM-123-02-F-D-LC Datasheet DownloadOfficial datasheet from SAMTEC
What are equivalent replacements for SFM-123-02-F-D-LC?
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What pitch and pin count does SFM-123-02-F-D-LC use, and how does this affect routing density?
The SFM-123-02-F-D-LC uses a 0.050-inch (1.27 mm) pitch with 46 positions in a dual-row (2×23) layout. At 1.27 mm pitch, this connector achieves twice the contact density of equivalent 0.100-inch connectors in the same PCB length, enabling more signal lanes per centimeter—critical for high-channel-count FPGA mezzanine boards, multi-lane SerDes interfaces, and compact RF module interconnects.
How many mating cycles is SFM-123-02-F-D-LC rated for, and what makes it high-reliability?
SAMTEC SFM series high-reliability socket strips are rated for a minimum of 500 mating cycles. High reliability is achieved through precision-machined beryllium-copper contacts with gold plating over nickel, maintaining contact resistance below 20 mΩ throughout the connector's service life. This durability is well-suited for test-and-measurement daughtercards, hot-swappable compute modules, and field-replaceable units (FRUs) in telecom line cards.
Can SFM-123-02-F-D-LC be assembled using standard SMT reflow soldering?
Yes. The F (surface-mount) termination style of SFM-123-02-F-D-LC is fully compatible with standard lead-free reflow soldering profiles peaking at 260 °C. No through-hole drilling is required, allowing panel-level SMT assembly on double-sided boards. The LC (low current) pin variant reduces pin thermal mass, which helps maintain even solder joint formation across all 46 positions during reflow without bridging on the 1.27 mm pitch pads.
What is the mating connector family for SFM-123-02-F-D-LC?
The SFM-123-02-F-D-LC mates with SAMTEC's TSM, TFM, or SSW series headers at 0.050-inch (1.27 mm) pitch in the dual-row D configuration with 46 positions. Specifically, TSM-123-02-x-DV or TFM-123-02-x-D headers in matching pin count provide a mechanically and electrically compatible mating interface, supporting stack heights from approximately 4 mm to 12 mm depending on the selected header variant.
What operating temperature range is SFM-123-02-F-D-LC suited for in industrial or aerospace designs?
SAMTEC SFM series connectors are designed to operate across a temperature range of -55 °C to +125 °C, making them suitable for automotive, aerospace avionics, and industrial environments with wide thermal excursions. The gold-plated contacts maintain stable contact resistance across this range, and the thermoplastic housing is rated to withstand 260 °C peak reflow temperatures without deformation, ensuring dimensional stability for the 1.27 mm pitch footprint.
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