KT11P2JM Equivalent & Substitute Parts

Part Overview

The KT11P2JM is a tactile switch manufactured by C&K, classified as SPST-NO (Single Pole Single Throw - Normally Open) with a contact rating of 1VA at 50V. This surface mount component features top actuation, sealed construction with IP57 ingress protection, and is designed for applications requiring reliable momentary switching in dust and moisture-prone environments. The part is currently listed as obsolete, making identification of suitable substitute components essential for ongoing production and maintenance applications.

Substiute Parts

KT11P2JM

C&KIn Stock: 1203KT11P2JM Datasheet

Current PartRFQ

KT11P2JM34LFS

C&KIn Stock: 1581KT11P2JM34LFS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KT11P2JM is determined by the following critical parameters that must remain consistent:

• Circuit Configuration: SPST-NO topology must be maintained
• Switch Function: Off-Mom (momentary) operation required
• Mounting Type: Surface mount compatibility essential
• Actuator Orientation: Top actuation required
• Outline Dimensions: 6.38mm x 6.22mm footprint must match
• Actuator Height: 5.36mm vertical clearance requirement
• Ingress Protection: IP57 sealed construction required
• Operating Temperature: -40°C ~ 90°C range must be supported
• Mechanical Life: 100,000 cycles minimum

The substitute part KT11P2JM34LFS meets all these critical parameters. The contact rating differs (1VA @ 32VAC/DC versus 1VA @ 50VAC/DC), which represents a reduced voltage specification. This substitution is valid only in applications where the operating voltage does not exceed 32V. The substitute part is currently in active production status and is RoHS3 compliant, addressing obsolescence and regulatory compliance concerns.

Parameter Comparison

Engineering Selection Recommendations

The KT11P2JM34LFS is the designated substitute for the obsolete KT11P2JM. Selection of this substitute is based on the following engineering criteria:

Product Status: The main part KT11P2JM is obsolete, creating supply chain risk. The substitute KT11P2JM34LFS maintains active production status, ensuring long-term availability and supply continuity.

Regulatory Compliance: The substitute part is ROHS3 compliant, addressing regulatory requirements that may apply to new designs or manufacturing processes. The main part is RoHS non-compliant, which may restrict its use in certain jurisdictions or applications subject to RoHS directives.

Electrical Compatibility: Both parts share identical circuit configuration (SPST-NO), switch function (Off-Mom), and mechanical specifications. The primary difference is the contact voltage rating: the substitute operates at 32VAC/DC maximum versus 50VAC/DC for the main part. This substitution is valid only when the application voltage does not exceed 32V.

Mechanical and Environmental Compatibility: Identical footprint (6.38mm x 6.22mm), actuator height (5.36mm), mounting type (surface mount), and ingress protection (IP57) ensure direct PCB compatibility and equivalent environmental performance across the operating temperature range of -40°C to 90°C.

Packaging Consideration: The substitute is supplied in Tape & Reel (TR) format, which is standard for high-volume production. The main part was supplied in bulk packaging, reflecting its obsolete status.

Frequently Asked Questions (FAQ)

Q: Can KT11P2JM34LFS be used as a direct replacement for KT11P2JM?

A: Yes, provided the application voltage does not exceed 32VAC/DC. The substitute maintains identical circuit topology, mechanical dimensions, mounting compatibility, and environmental sealing. The reduced voltage rating is the only functional difference.

Q: What is the primary reason for substitution?

A: The KT11P2JM is obsolete. The KT11P2JM34LFS is an active production part from the same manufacturer and series, ensuring supply availability and regulatory compliance (ROHS3).

Q: Are the physical dimensions identical?

A: Yes. Both parts have identical outline dimensions (6.38mm x 6.22mm), actuator height (5.36mm), and surface mount footprint. PCB layout modifications are not required.

Q: What is the voltage limitation of the substitute?

A: The KT11P2JM34LFS is rated for 1VA @ 32VAC/DC, compared to the original part's 1VA @ 50VAC/DC. Applications operating above 32V require evaluation of alternative solutions.

Q: Are there differences in mechanical life or operating temperature?

A: No. Both parts specify 100,000 mechanical cycles and operate across the identical temperature range of -40°C to 90°C.

Q: What is the difference in packaging?

A: The main part was supplied in bulk packaging. The substitute is supplied in Tape & Reel (TR) format, which is standard for automated assembly processes.

Q: Does the substitute meet RoHS requirements?

A: Yes. The KT11P2JM34LFS is ROHS3 compliant. The original KT11P2JM is RoHS non-compliant, which may restrict its use in applications subject to RoHS directives.

Q: Are both parts sealed and waterproof?

A: Yes. Both parts feature IP57 ingress protection (dust protected, waterproof) and sealed construction, providing equivalent environmental performance.