SFM-120-02-LM-D-A-K-TR SAMTEC Connector (Other) In Stock
SAMTEC SFM-120-02-LM-D-A-K-TR is a 40-position dual-row high-reliability surface-mount socket strip at 0.050" pitch with low-profile metal locking and tape-and-reel packaging for automated SMT production.
- Manufacturer
- SAMTEC
- Package
- Other
- Pin Count
- 40
- Lifecycle
- ACTIVE
- Datasheet
- SFM-120-02-LM-D-A-K-TR Datasheet PDF
- Category
- Connector
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 40-position dual-row SMT socket at 0.050" pitch with metal locking (K) feature for secure mechanical retention against vibration and shock
- Low-profile (LM) housing reduces inter-board gap to minimize assembly height in constrained mezzanine stack designs
- Tape-and-reel (TR) packaging combined with gold-plated contacts enables reliable high-volume automated SMT assembly
Applications
The SFM-120-02-LM-D-A-K-TR is designed for compact mezzanine and daughter-card assemblies in industrial control, portable instrumentation, and embedded computing platforms where 40 signals must be reliably transferred at 0.050" pitch with positive mechanical lock. The metal locking key (K) prevents unmating under shock loads of up to several g-forces, making it suitable for mobile or field-deployed electronics. Tape-and-reel delivery supports high-speed pick-and-place SMT lines with minimal changeover.
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 metal locking (K) feature of the SFM-120-02-LM-D-A-K-TR do in vibration or shock environments?
The metal locking (K) feature provides a positive retention mechanism that requires deliberate force to unmate the SFM-120-02-LM-D-A-K-TR from its mating header. In vibration or mechanical shock environments, this prevents accidental disconnection of all 40 positions at 0.050" pitch, which could otherwise cause signal interruptions. Applications in field-deployed industrial equipment, ruggedized portable instruments, and transportation-mounted controllers commonly specify the K locking variant to maintain connectivity under repeated vibration cycles.
How does the low-profile (LM) housing of the SFM-120-02-LM-D-A-K-TR help reduce overall PCB stack height in a mezzanine design?
The low-profile (LM) designation on the SFM-120-02-LM-D-A-K-TR means the socket housing extends minimally above the PCB surface, reducing the air gap between mated boards when used with a complementary low-profile header. For designs targeting a total mated stack height below 4 mm, the LM variant enables 40-position, 0.050" pitch connectivity within a thinner assembly envelope than standard-height SFM sockets, which is critical in slim embedded modules and wearable-industrial device designs.
For a production run of 5,000 boards needing a 40-position 0.050" pitch socket, what supply and assembly advantages does the SFM-120-02-LM-D-A-K-TR tape-and-reel format provide?
The tape-and-reel (TR) format of the SFM-120-02-LM-D-A-K-TR packages components on an EIA-481-compatible carrier reel, allowing direct loading into standard SMT pick-and-place feeders without manual tray handling. For a 5,000-board production run, this eliminates the placement-error risk associated with tray-fed connectors and reduces per-board cycle time by maintaining continuous component feed. Reel quantities for the 40-position SMT socket typically range from 500 to 1,000 pieces per reel, and buyers should confirm reel count with SAMTEC to optimize procurement for their planned batch size.
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