KSH211J 50 LFS Equivalent & Substitute Parts

Part Overview

The KSH211J 50 LFS is a tactile switch manufactured by C&K, configured as SPST-NO (Single Pole Single Throw - Normally Open) with a contact rating of 0.05A at 12VDC. This surface mount component features a square button actuator with top actuation and is designed for off-momentary switch function applications. The product is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.

Substiute Parts

KSH211J 50 LFS

C&KIn Stock: 999KSH211J 50 LFS Datasheet

Current PartRFQ

ADTSJW67NV

APEM Inc.In Stock: 879ADTSJW67NV Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KSH211J 50 LFS is determined by the following critical parameters:

• Circuit Configuration: Must be SPST-NO to maintain identical electrical function
• Contact Rating: Must support 0.05A @ 12VDC minimum
• Mounting Type: Must be Surface Mount for PCB compatibility
• Actuator Orientation: Must be Top Actuated for mechanical fit
• Termination Style: Must be J Lead for solder connection compatibility
• Outline Dimensions: Must be within acceptable tolerance of 6.30mm x 6.30mm footprint
• Actuator Height: Must be compatible with 5.00mm vertical clearance requirements
• Environmental Compliance: Must maintain RoHS and REACH compliance status

The ADTSJW67NV from APEM Inc. meets these substitution criteria across all critical electrical and mechanical parameters.

Parameter Comparison

Engineering Selection Recommendations

The ADTSJW67NV is a direct functional equivalent for the obsolete KSH211J 50 LFS. Both components share identical electrical specifications (SPST-NO circuit, 0.05A @ 12VDC contact rating) and mechanical mounting characteristics (surface mount, J lead termination, top actuated orientation).

The ADTSJW67NV maintains active product status with ROHS3 compliance, providing superior long-term availability compared to the obsolete KSH211J 50 LFS. Both components carry MSL 1 (Unlimited) moisture sensitivity rating and REACH Unaffected status, ensuring equivalent environmental compliance.

Minor dimensional variations exist: the ADTSJW67NV actuator height is 5.20mm versus 5.00mm on the original part, and outline dimensions differ by 0.10mm in the Y-axis (6.20mm versus 6.30mm). These variations remain within typical PCB design tolerances for tactile switch applications. The ADTSJW67NV operating temperature range (-25°C ~ 70°C) is narrower than the KSH211J 50 LFS (-40°C ~ 90°C); applications requiring extended temperature operation must evaluate this specification against system requirements.

Frequently Asked Questions (FAQ)

Q: Can the ADTSJW67NV directly replace the KSH211J 50 LFS on existing PCBs?

A: Yes. Both components share identical circuit configuration (SPST-NO), contact rating (0.05A @ 12VDC), mounting type (surface mount), and termination style (J lead). Outline dimensions are within 0.10mm tolerance, and actuator height difference of 0.20mm is acceptable for standard tactile switch applications. PCB footprint compatibility is maintained.

Q: What are the key differences between these two parts?

A: The primary differences are product status (ADTSJW67NV is active; KSH211J 50 LFS is obsolete), operating temperature range (ADTSJW67NV: -25°C ~ 70°C; KSH211J 50 LFS: -40°C ~ 90°C), and minor dimensional variations (actuator height 5.20mm versus 5.00mm; outline Y-axis 6.20mm versus 6.30mm). Electrical specifications and mechanical mounting are identical.

Q: Are there compliance or certification concerns with substitution?

A: No. Both components are RoHS compliant, REACH Unaffected, and carry MSL 1 (Unlimited) moisture sensitivity rating. The ADTSJW67NV meets ROHS3 compliance, which supersedes earlier RoHS standards.

Q: What applications require temperature range verification?

A: Systems operating below -25°C or above 70°C must evaluate the ADTSJW67NV operating temperature range against application requirements. The original KSH211J 50 LFS supports -40°C ~ 90°C operation. For extended temperature applications, alternative substitutes may be necessary.

Q: Is the 0.20mm actuator height difference significant?

A: For standard tactile switch applications with typical PCB clearance design, a 0.20mm height difference is within acceptable tolerance. Applications with tight vertical space constraints should verify clearance against enclosure or overlay specifications.