KT11P4JM Equivalent & Substitute Parts

Part Overview

The KT11P4JM is a tactile switch manufactured by C&K, featuring SPST-NO (Single Pole Single Throw - Normally Open) circuit configuration with 1VA contact rating at 50V. This surface mount component is designed for off-momentary switch function applications with sealed, dust-protected, and waterproof construction (IP57). The product is classified as obsolete, making identification of equivalent and substitute parts essential for ongoing design support and procurement continuity.

Substiute Parts

KT11P4JM

C&KIn Stock: 1004KT11P4JM Datasheet

Current PartRFQ

EDGAC0LFS

C&KIn Stock: 1019EDGAC0LFS Datasheet

DirectRFQ

TL3304AF260QJ

E-SwitchIn Stock: 52029TL3304AF260QJ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KT11P4JM is determined by the following critical parameters:

Primary Compatibility Criteria:

• Circuit configuration: SPST-NO
• Switch function: Off-Mom
• Actuator orientation: Top Actuated
• Contact rating voltage compatibility: minimum 50V
• Mechanical life: minimum 100,000 cycles

Secondary Considerations:

• Mounting type compatibility (surface mount preferred for direct replacement)
• Outline dimensions (within acceptable PCB layout tolerances)
• Operating temperature range (must encompass application requirements)
• Ingress protection rating (IP57 preferred for sealed applications)

The identified substitute parts meet the core electrical and mechanical requirements for SPST-NO tactile switch applications, though with variations in contact current rating, mounting technology, and environmental specifications.

Parameter Comparison

Engineering Selection Recommendations

EDGAC0LFS (Direct Manufacturer Equivalent): This C&K substitute maintains manufacturer continuity and shares identical circuit configuration and switch function. The part is currently active in production with ROHS3 compliance. The through-hole mounting type represents a significant design change from the surface mount KT11P4JM, requiring PCB layout modification. The contact rating of 0.05A @ 100VAC/DC exceeds the original 1VA specification, providing enhanced voltage margin. Operating temperature range (-55°C ~ 85°C) is narrower at the upper limit compared to the original part. Mechanical life of 1,000,000 cycles substantially exceeds the original 100,000 cycles specification.

TL3304AF260QJ (Similar Manufacturer Alternative): This E-Switch substitute maintains surface mount compatibility and identical outline dimensions (6.20mm x 6.20mm), minimizing PCB layout changes. The part is active in production with ROHS3 compliance and high inventory availability (52,005 pcs). Contact rating of 0.05A @ 50VDC matches the original voltage specification. Operating temperature range (-20°C ~ 70°C) is narrower than the original specification at both temperature extremes. Mechanical life of 100,000 cycles matches the original part exactly. Actuator height of 3.40mm is lower than the original 6.96mm, which may affect tactile feedback characteristics and clearance requirements.

Frequently Asked Questions (FAQ)

Q: Can EDGAC0LFS directly replace KT11P4JM on the existing PCB?

A: No. EDGAC0LFS uses through-hole termination (PC Pin) versus the surface mount J Lead termination of KT11P4JM. PCB redesign is required to accommodate the different mounting technology and actuator height of 1.20mm.

Q: Is TL3304AF260QJ a drop-in replacement for KT11P4JM?

A: TL3304AF260QJ maintains surface mount compatibility and similar outline dimensions (6.20mm x 6.20mm versus 6.38mm x 6.22mm). However, the actuator height differs significantly (3.40mm versus 6.96mm), which may affect mechanical clearance and tactile response. Electrical compatibility is confirmed for 50V applications.

Q: What are the key differences in contact rating between these parts?

A: KT11P4JM is rated 1VA @ 50VAC/DC. EDGAC0LFS is rated 0.05A @ 100VAC/DC (5VA maximum). TL3304AF260QJ is rated 0.05A @ 50VDC (2.5VA maximum). For applications requiring the full 1VA capacity, neither substitute provides equivalent current-handling capability at the specified voltage.

Q: Which substitute offers the best environmental protection?

A: KT11P4JM specifies IP57 (dust protected, waterproof) with sealed construction. EDGAC0LFS and TL3304AF260QJ do not specify ingress protection ratings. For sealed or waterproof applications, environmental sealing characteristics must be verified with the substitute part datasheets.

Q: Are both substitutes RoHS compliant?

A: Yes. EDGAC0LFS and TL3304AF260QJ are both ROHS3 compliant. KT11P4JM is RoHS non-compliant. If RoHS compliance is a design requirement, either substitute meets current regulatory standards.

Q: What is the operating temperature consideration for each substitute?

A: KT11P4JM operates -40°C ~ 90°C. EDGAC0LFS operates -55°C ~ 85°C (lower upper limit). TL3304AF260QJ operates -20°C ~ 70°C (narrowest range). Applications requiring the full -40°C to 90°C range cannot use TL3304AF260QJ without thermal analysis.

Q: How do mechanical life ratings compare?

A: KT11P4JM and TL3304AF260QJ both specify 100,000 cycles. EDGAC0LFS specifies 1,000,000 cycles, providing a 10x improvement in mechanical durability for high-cycle applications.