SFM-120-T2-FM-D-A-K SAMTEC Connector (Other) In Stock
SAMTEC SFM-120-T2-FM-D-A-K is a 40-position, dual-row, high-reliability socket strip with 0.050" (1.27 mm) pitch in a surface mount package with keying and gold-plated female contacts for precise, repeatable mating. Supports signal and low-power connections with an operating range of -65°C to +125°C. Available in stock with worldwide shipping.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 40
- Lifecycle
- ACTIVE
- Datasheet
- SFM-120-T2-FM-D-A-K Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 40 positions in dual-row 0.050" (1.27 mm) pitch SMT socket delivering twice the density of 0.100" pitch alternatives
- High-reliability SFM socket design rated for hundreds of mating cycles with gold-plated female contacts
- -K keying feature prevents incorrect connector orientation in multi-connector assemblies
- Surface mount termination eliminates through-hole drilling and supports automated reflow soldering processes
Applications
The SFM-120-T2-FM-D-A-K is used in high-density board-to-board mezzanine interconnects for telecom line cards, data storage modules, and FPGA mezzanine carrier boards requiring 40 reliable signal connections at 0.050" pitch. Its keying feature and high-reliability socket contacts make it well suited for plug-in module sockets on industrial single-board computers where blind-mating must be repeatable and accurate. The SMT format is compatible with standard reflow assembly processes used in volume production of networking and embedded computing hardware.
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 pitch and position count does SFM-120-T2-FM-D-A-K provide, and how does the 0.050" pitch benefit PCB layout?
The SFM-120-T2-FM-D-A-K provides 40 positions on a 0.050" (1.27 mm) dual-row pitch, which halves the PCB footprint compared to equivalent 0.100" (2.54 mm) pitch connectors. This space saving is critical in high-density designs like mezzanine modules and compact FPGA carrier boards with limited real estate.
What makes the SFM-120-T2-FM-D-A-K a high-reliability choice compared to standard socket strips?
SAMTEC's SFM series uses a precision-machined female socket with gold-plated contacts that maintain low contact resistance below 20 mΩ per pin across hundreds of mating cycles. The series also incorporates tighter manufacturing tolerances to ensure consistent 0.050" pitch alignment, which reduces connector failure rates in vibration-prone industrial or mil-aero environments.
How does the -K keying option on SFM-120-T2-FM-D-A-K prevent assembly errors?
The -K suffix adds a keying peg or slot to the connector housing that physically blocks mating with unkeyed or differently keyed connectors. In a board assembly with multiple 40-pin 0.050" sockets, this prevents swapping connectors during field servicing and protects the gold-plated contacts from damage caused by mis-insertion.
Is SFM-120-T2-FM-D-A-K compatible with SAMTEC TSM or TFM dual-row male strips at 0.050" pitch?
Yes. The SFM series is designed to mate with SAMTEC's TSM and TFM 0.050" dual-row male strip headers, allowing designers to build matched board-to-board assemblies within the same SAMTEC 0.050" pitch family. Mated stack heights vary by selected male strip pin length, typically ranging from 8 mm to 20 mm.
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