KSH231J 50 LFS Equivalent & Substitute Parts

Part Overview

The KSH231J 50 LFS is a tactile switch manufactured by C&K, classified 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, maintenance, and new design implementations where legacy compatibility is required.

Substiute Parts

KSH231J 50 LFS

C&KIn Stock: 858KSH231J 50 LFS Datasheet

Current PartRFQ

ADTSJW67RVTR

APEM Inc.In Stock: 829ADTSJW67RVTR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KSH231J 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
• Termination Style: Must be J Lead for footprint compatibility
• Outline Dimensions: Must be within acceptable tolerance of 6.30mm x 6.30mm
• Actuator Height: Must be within acceptable tolerance of 5.00mm vertical height
• Switch Function: Must be Off-Momentary to match application behavior

The ADTSJW67RVTR from APEM Inc. meets these core substitution criteria, maintaining electrical equivalence and mechanical compatibility with the obsolete KSH231J 50 LFS.

Parameter Comparison

Engineering Selection Recommendations

The ADTSJW67RVTR is a functionally equivalent substitute for the obsolete KSH231J 50 LFS based on the following engineering criteria:

Electrical Equivalence: Both components maintain identical SPST-NO circuit configuration and contact rating of 0.05A @ 12VDC, ensuring direct functional replacement in 12V switching applications.

Mechanical Compatibility: Outline dimensions and actuator height remain within acceptable manufacturing tolerances. The 0.20mm variance in actuator height and 0.10mm variance in outline dimensions are within standard PCB design tolerances and do not require layout modifications.

Compliance Status: The ADTSJW67RVTR holds active ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements. Both components share identical moisture sensitivity level (MSL 1) and ECCN classification.

Production Availability: The substitute part is in active production status with documented inventory, providing supply chain continuity for the obsolete original component.

Application Considerations: The ADTSJW67RVTR features a reduced switch travel distance (0.45mm versus 1.30mm) and narrower operating temperature range (-25°C ~ 70°C versus -40°C ~ 90°C). These differences must be evaluated against specific application requirements before implementation.

Frequently Asked Questions (FAQ)

Q: Can the ADTSJW67RVTR be used as a direct replacement for the KSH231J 50 LFS without PCB modifications?

A: Yes, for standard applications. The mechanical dimensions are within acceptable tolerances. However, the reduced switch travel distance (0.45mm versus 1.30mm) may affect tactile feedback characteristics. Verify that your application does not depend on the specific travel distance of the original component.

Q: What is the primary difference between these two switches?

A: The main differences are switch travel distance (1.30mm original versus 0.45mm substitute) and operating temperature range (-40°C ~ 90°C original versus -25°C ~ 70°C substitute). Both maintain identical electrical specifications and mechanical footprint compatibility.

Q: Are there packaging differences between the original and substitute?

A: The KSH231J 50 LFS uses standard packaging, while the ADTSJW67RVTR is supplied in Tape & Reel (TR) format. This affects procurement and assembly processes but does not impact component functionality or PCB integration.

Q: Does the substitute part meet the same regulatory standards?

A: Both components are RoHS compliant and REACH unaffected. The substitute holds ROHS3 certification, which represents current regulatory standards. Both share identical moisture sensitivity level (MSL 1) and ECCN classification (EAR99).

Q: What should I verify before implementing the ADTSJW67RVTR in my design?

A: Confirm that your application does not require the extended temperature range below -25°C or above 70°C. Verify that the reduced switch travel distance (0.45mm) is acceptable for your user interface requirements. Test the actuator force (260gf versus 250gf) to ensure it meets tactile feedback expectations.

Q: Is the ADTSJW67RVTR suitable for washable applications?

A: The ADTSJW67RVTR includes a washable feature. If your original application does not require this capability, it does not impact compatibility. If washability is required, this feature provides additional functionality.