PTS635VH31 LFS Equivalent & Substitute Parts

Part Overview

The PTS635VH31 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 component features side actuation, through-hole right-angle mounting, and a rectangular button actuator. The product is currently obsolete, making identification of functionally equivalent alternatives essential for ongoing system maintenance and new design implementations where legacy component compatibility is required.

Substiute Parts

PTS635VH31 LFS

C&KIn Stock: 993PTS635VH31 LFS Datasheet

Current PartRFQ

MJTP1117

APEM Inc.In Stock: 17992MJTP1117 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PTS635VH31 LFS is determined by strict alignment of the following critical parameters:

• Circuit Configuration: Must be SPST-NO
• Contact Rating: Must support 0.05A @ 12VDC minimum
• Actuator Type: Must be rectangular button
• Mounting Type: Must be through-hole, right-angle configuration
• Actuator Orientation: Must be side actuated
• Termination Style: Must be PC pin
• Outline Dimensions: Must be 6.00mm x 4.60mm (footprint compatibility)
• Illumination: Must be non-illuminated

The MJTP1117 manufactured by APEM Inc. satisfies all mandatory substitution criteria. While secondary parameters such as operating force (180gf vs. 200gf), actuator length (3.72mm vs. 3.15mm), mechanical life (100,000 vs. 20,000 cycles), and operating temperature range (-20°C ~ 70°C vs. -40°C ~ 60°C) differ, these variations remain within acceptable tolerance for functional equivalence in applications where the primary electrical and mechanical interface requirements are met.

Parameter Comparison

Engineering Selection Recommendations

The MJTP1117 is the qualified substitute for the PTS635VH31 LFS based on the following engineering criteria:

Compliance and Certification: The MJTP1117 holds ROHS3 compliance, exceeding the RoHS compliance status of the original part. Both components are REACH Unaffected and classified under ECCN EAR99, ensuring regulatory alignment for procurement and deployment.

Product Status: The original PTS635VH31 LFS is obsolete, while the MJTP1117 maintains active production status with significantly higher inventory availability (17,974 pcs vs. 968 pcs). This ensures long-term supply chain continuity and reduces procurement risk.

Functional Equivalence: Both components share identical circuit configuration (SPST-NO), contact rating (0.05A @ 12VDC), mounting interface (through-hole right-angle), and PCB footprint (6.00mm x 4.60mm). These parameters establish direct functional compatibility at the system level.

Secondary Performance Characteristics: The MJTP1117 demonstrates enhanced mechanical durability with 100,000 cycles versus 20,000 cycles, and an extended operating temperature range (-20°C ~ 70°C vs. -40°C ~ 60°C). These improvements provide additional operational margin in most applications.

Frequently Asked Questions (FAQ)

Q: Can the MJTP1117 be used as a direct replacement for the PTS635VH31 LFS?

A: Yes. Both components share identical circuit configuration, contact rating, mounting type, actuator orientation, termination style, and PCB footprint dimensions. The MJTP1117 is functionally equivalent for applications requiring SPST-NO momentary switching at 0.05A @ 12VDC with side-actuated through-hole right-angle mounting.

Q: What are the differences in operating force between these parts?

A: The PTS635VH31 LFS requires 200gf operating force, while the MJTP1117 requires 180gf. This 20gf difference is within typical tolerance for tactile switch applications and does not affect functional compatibility in standard switching circuits.

Q: How do the mechanical life ratings compare?

A: The PTS635VH31 LFS is rated for 20,000 cycles, while the MJTP1117 is rated for 100,000 cycles. The MJTP1117 provides extended mechanical durability, making it suitable for applications with higher cycle frequency requirements.

Q: Are there temperature range considerations for substitution?

A: The PTS635VH31 LFS operates from -40°C to 60°C, while the MJTP1117 operates from -20°C to 70°C. For applications requiring operation below -20°C, the original part specification must be maintained. For standard industrial and commercial temperature ranges, the MJTP1117 is suitable.

Q: What is the actuator length difference, and does it affect PCB layout?

A: The PTS635VH31 LFS has an actuator length of 3.15mm, while the MJTP1117 has 3.72mm. Both maintain the same 6.00mm x 4.60mm outline footprint. The increased actuator length of the MJTP1117 may require clearance verification in confined mechanical spaces, but PCB layout compatibility is maintained.

Q: Why is the MJTP1117 preferred despite the obsolete status of the original part?

A: The MJTP1117 is in active production with substantially higher inventory availability, ensuring reliable long-term supply. It meets or exceeds all regulatory compliance requirements and provides enhanced mechanical performance characteristics.