PTS635VH39 LFS Equivalent & Substitute Parts

Part Overview

The PTS635VH39 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

PTS635VH39 LFS

C&KIn Stock: 1066PTS635VH39 LFS Datasheet

Current PartRFQ

MJTP1117

APEM Inc.In Stock: 17992MJTP1117 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PTS635VH39 LFS is determined by strict alignment of the following critical parameters:

• Circuit configuration (SPST-NO)
• Switch function (Off-Mom momentary operation)
• Contact rating (0.05A @ 12VDC minimum)
• Actuator type (Rectangular button)
• Mounting configuration (Through hole, right angle)
• Actuator orientation (Side actuated)
• Outline dimensions (6.00mm x 4.60mm)
• Termination style (PC pin)
• Illumination status (Non-illuminated)

The MJTP1117 manufactured by APEM Inc. meets all critical substitution criteria. Both components share identical circuit topology, contact ratings, mounting geometry, and physical outline dimensions. Variations in operating force (200gf vs. 180gf), actuator length (3.85mm vs. 3.72mm), and mechanical life (20,000 vs. 100,000 cycles) represent acceptable engineering tolerances within the SPST-NO tactile switch category and do not preclude functional equivalence in standard applications.

Parameter Comparison

Engineering Selection Recommendations

The MJTP1117 is the qualified substitute for the obsolete PTS635VH39 LFS. Selection rationale is based on the following engineering factors:

Functional Equivalence: Both components satisfy identical electrical and mechanical specifications for SPST-NO momentary switch applications at 0.05A / 12VDC. Outline dimensions and mounting geometry are identical, ensuring direct PCB footprint compatibility.

Product Status: The MJTP1117 maintains active production status with ROHS3 compliance, providing long-term supply chain continuity and regulatory alignment. The PTS635VH39 LFS is obsolete and subject to availability constraints.

Performance Characteristics: The MJTP1117 offers extended mechanical life (100,000 cycles vs. 20,000 cycles) and a wider operating temperature range (-20°C ~ 70°C vs. -40°C ~ 60°C), providing enhanced reliability margins in most applications. The 20gf reduction in operating force (180gf vs. 200gf) falls within acceptable tactile feedback tolerances for standard user interface applications.

Compliance: Both components are RoHS compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement.

Frequently Asked Questions (FAQ)

Q: Can the MJTP1117 be used as a direct replacement for the PTS635VH39 LFS?

A: Yes. Both components share identical circuit configuration (SPST-NO), contact rating (0.05A @ 12VDC), mounting type (through hole, right angle), and physical outline (6.00mm x 4.60mm). PCB footprint compatibility is confirmed.

Q: What are the differences between these two switches?

A: The primary differences are: (1) Operating force: MJTP1117 requires 180gf vs. 200gf for PTS635VH39 LFS; (2) Mechanical life: MJTP1117 rated for 100,000 cycles vs. 20,000 cycles; (3) Operating temperature range: MJTP1117 supports -20°C ~ 70°C vs. -40°C ~ 60°C; (4) Product status: MJTP1117 is active production while PTS635VH39 LFS is obsolete.

Q: Will the reduced operating force of the MJTP1117 affect user experience?

A: The 20gf difference (180gf vs. 200gf) represents a 10% reduction and remains within standard tactile feedback parameters for momentary switches. This variation is imperceptible in typical user interface applications.

Q: Are there packaging considerations for the MJTP1117?

A: The MJTP1117 is supplied in bulk packaging. Verify packaging requirements for your procurement process, as the original PTS635VH39 LFS may have specified alternative packaging formats.

Q: What is the temperature operating range difference, and does it matter?

A: The MJTP1117 operates from -20°C ~ 70°C, while the PTS635VH39 LFS operates from -40°C ~ 60°C. If your application requires operation below -20°C or above 70°C, verify that the MJTP1117 meets your specific environmental requirements before substitution.

Q: Are both components RoHS compliant?

A: Yes. The PTS635VH39 LFS is RoHS compliant, and the MJTP1117 is ROHS3 compliant. Both meet current regulatory standards for hazardous substance restrictions.