SFM-133-T2-LM-D-A-K SAMTEC Connector (Other) In Stock
SAMTEC SFM-133-T2-LM-D-A-K is a 66-position dual-row high-reliability surface mount socket strip with 0.050" (1.27 mm) pitch. Designed for dense board-to-board connections with LM (low-profile mount) construction and gold-plated contacts. Available worldwide from authorized distributors with competitive pricing.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 66
- Lifecycle
- ACTIVE
- Datasheet
- SFM-133-T2-LM-D-A-K Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 66-position dual-row SMT socket strip with 0.050" (1.27 mm) pitch providing 33 pins per row for maximum signal density
- LM (low-profile mount) design minimizing connector height above PCB surface for space-constrained board stacking
- High-reliability gold-plated contacts rated for 1000+ mating cycles in aerospace and industrial environments
- Compatible with SAMTEC TMM and SHF header series enabling scalable board-to-board stack heights from 8 mm to 20 mm
Applications
The SFM-133-T2-LM-D-A-K serves high-pin-count board-to-board interconnect needs in FPGA development platforms, high-speed data acquisition systems, and multi-processor embedded computing modules where 66 signal lines must cross between stacked boards with minimal stack height. Its low-profile mount (LM) variant reduces the height contribution of the connector, critical in chassis-constrained avionics boxes, ruggedized military electronics, and compact server blade modules. The 0.050" pitch and dual-row layout make it a preferred choice for software-defined radio systems, radar signal processors, and satellite communication electronics requiring high-density reliable interconnects.
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 is the total pin count, row arrangement, and pitch of the SFM-133-T2-LM-D-A-K?
The SFM-133-T2-LM-D-A-K provides 66 total positions arranged as 33 pins per row in a dual-row configuration at 0.050" (1.27 mm) pitch. The LM (low-profile mount) designation keeps the connector profile below standard SMT socket heights, with gold-plated contacts rated for over 1000 mating cycles and operating temperatures from -55°C to +125°C.
What does the LM suffix signify in SFM-133-T2-LM-D-A-K and what stack height does it enable?
The LM suffix denotes a low-profile mount contact style where the socket body sits closer to the PCB surface compared to standard T2 variants. This reduces the mated stack height by approximately 2-3 mm, enabling tighter board-to-board separations starting at 8 mm when combined with SAMTEC's TMM series low-profile headers. This is particularly valuable in avionics and embedded computing where chassis height is constrained to within 15 mm card-to-card clearances.
When is SFM-133-T2-LM-D-A-K preferred over SFM-124-T2-F-D-A-K in board-to-board designs?
Select the SFM-133-T2-LM-D-A-K over the 48-position SFM-124-T2-F-D-A-K when designs require 66 signal lines across stacked boards versus 48 lines, typically in FPGA interface daughter cards, high-speed DSP modules, or multi-channel sensor arrays needing 18 additional signal connections. The 66-position connector occupies roughly 37% more board length than the 48-position version, so sufficient PCB edge space is needed when upgrading from 48 to 66 positions.
What are the procurement lead times and typical pricing tiers for SFM-133-T2-LM-D-A-K?
SAMTEC SFM-133-T2-LM-D-A-K is available through Mouser, Digi-Key, and Arrow with standard non-stocked lead times of 8-14 weeks. SAMTEC's direct factory orders for prototyping typically deliver 5-10 sample pieces within 1-2 weeks. Volume pricing breaks apply at 25, 100, and 500 unit thresholds; unit cost at 100-piece quantities is typically 30-40% lower than single-unit pricing for production procurement planning.
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