SFM-146-02-LM-D-A SAMTEC Connector (Other) In Stock
SFM-146-02-LM-D-A is a 92-position dual-row high-reliability surface-mount socket strip from SAMTEC with 1.27 mm (0.050") pitch for dense board-to-board mating. It provides gold-plated contacts and an extended post height for increased mated stack clearance. Available from authorized distributors with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 92
- Lifecycle
- ACTIVE
- Datasheet
- SFM-146-02-LM-D-A Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 92 positions (2x46) at 1.27 mm (0.050 inch) pitch enables routing of up to 92 signal or power channels between boards in a compact dual-row footprint
- Surface-mount termination integrates directly into reflow SMT assembly processes without requiring through-hole board drilling
- High-reliability SAMTEC SFM series construction with gold-plated contacts ensures low contact resistance and durability through hundreds of mating cycles
- LM extended post option provides greater board-to-board clearance than standard variants, accommodating taller components or heat sinks on mating boards
Applications
The SFM-146-02-LM-D-A is suited for high-density mezzanine and daughter-card interconnects in FPGA development boards, SDR platforms, and embedded computing modules where 92 signals must pass between two closely stacked PCBs at 1.27 mm pitch. Its extended post height accommodates mid-stack components such as decoupling capacitors or crystal oscillators that would be obstructed by a standard-height socket. The surface-mount footprint and gold contact finish support both automated production assembly and field-replaceable module designs in telecom and defense electronics.
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
How many positions does SFM-146-02-LM-D-A provide and how are they arranged?
The SFM-146-02-LM-D-A provides 92 positions arranged in 2 rows of 46 contacts at 1.27 mm (0.050 inch) pitch. This dual-row configuration supports up to 92 independent signal or power lines across a board-stacking interface with a total connector length of approximately 59 mm.
What does the LM designation mean in SFM-146-02-LM-D-A and how does it affect stack height?
The LM option specifies a longer post length compared to the standard L and L2 variants, providing additional clearance of approximately 10 mm to 14 mm between mated PCBs. This extra space accommodates taller through-hole or surface-mount components, heat sinks, or shielding cans on the daughter card that would otherwise prevent a lower-profile board stack.
Which header series mates with SFM-146-02-LM-D-A for a complete board-to-board assembly?
The SFM-146-02-LM-D-A mates with SAMTEC SFH series headers at the same 1.27 mm pitch and 2-row, 46-position-per-row configuration. A matching SFH-146 header on the second board creates a 92-pin board-to-board interface with gold-to-gold contact mating, rated for reliable signal transmission at frequencies exceeding 1 GHz in controlled-impedance layouts.
For which high-density signal routing applications is SFM-146-02-LM-D-A a better fit than a 2.54 mm pitch connector?
When PCB real estate is limited and 92 signals must cross boards, 1.27 mm pitch reduces total connector length from approximately 118 mm (at 2.54 mm) to 59 mm — roughly half the footprint. This trade-off favors SFM-146-02-LM-D-A in SDR platforms, FPGA mezzanine cards, and radar front-end modules where board area is at a premium and signal counts exceed 80 channels per connector.
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