KT11B0JM Equivalent & Substitute Parts

Part Overview

The KT11B0JM 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 a flush top actuator, sealed design with IP57 ingress protection, and is rated for 100,000 mechanical cycles. The KT11B0JM is currently listed as obsolete, making identification of suitable substitute components essential for ongoing production and maintenance applications.

Substiute Parts

KT11B0JM

C&KIn Stock: 1100KT11B0JM Datasheet

Current PartRFQ

KT11B0JM34LFS

C&KIn Stock: 8158KT11B0JM34LFS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KT11B0JM is determined by the following critical parameters:

Mandatory Matching Parameters:

• Circuit configuration: SPST-NO
• Switch function: Off-Mom (Momentary)
• Mounting type: Surface Mount
• Actuator type: Flush, Top Actuated
• Actuator height: 3.00mm
• Outline dimensions: 6.38mm x 6.22mm
• Termination style: J Lead
• Ingress protection: IP57
• Operating temperature range: -40°C ~ 90°C
• Mechanical life: 100,000 Cycles

Allowable Variation Parameters:

• Contact rating voltage: May be equal to or exceed 50V
• Product status: Active status preferred for availability
• RoHS compliance: May differ from original
• Operating force: May vary if not specified as critical

The substitute KT11B0JM34LFS meets all mandatory parameters while offering improved product status and compliance characteristics.

Parameter Comparison

Engineering Selection Recommendations

The KT11B0JM34LFS is a direct substitute for the obsolete KT11B0JM. Both components share identical mechanical and electrical characteristics across all critical parameters: circuit configuration, switch function, mounting type, actuator geometry, outline dimensions, ingress protection rating, and operating temperature range.

The KT11B0JM34LFS offers the following advantages:

• Active product status ensures ongoing availability and supply chain continuity
• ROHS3 compliance aligns with current regulatory requirements
• Tape & Reel packaging supports automated assembly processes
• Contact rating of 32V is suitable for applications operating at or below 32V; applications requiring the full 50V rating of the original part require evaluation of actual circuit voltage requirements

For applications where the 50V contact rating is a mandatory design requirement, alternative components within the KT series should be evaluated.

Frequently Asked Questions (FAQ)

Q: Can KT11B0JM34LFS be used as a direct replacement for KT11B0JM?

A: Yes, for applications operating at 32V or below. Both components are identical in circuit configuration (SPST-NO), switch function (Off-Mom), mounting type (Surface Mount), actuator geometry (3.00mm flush top), outline dimensions (6.38mm x 6.22mm), termination style (J Lead), ingress protection (IP57), and mechanical life (100,000 cycles). The primary difference is the contact rating voltage: 32V versus 50V.

Q: What is the voltage limitation of the substitute part?

A: The KT11B0JM34LFS is rated for 1VA @ 32VAC/DC, compared to the original part's 1VA @ 50VAC/DC. This means the substitute is suitable for circuits operating at 32V or lower. Circuits requiring operation above 32V require components with higher voltage ratings.

Q: Are there packaging differences between these parts?

A: Yes. The KT11B0JM is supplied in bulk packaging, while the KT11B0JM34LFS is supplied in Tape & Reel (TR) format. Tape & Reel packaging is standard for automated surface mount assembly and offers improved handling and placement efficiency.

Q: What is the compliance status difference?

A: The original KT11B0JM is RoHS non-compliant, while the KT11B0JM34LFS is ROHS3 compliant. For applications subject to RoHS regulations, the substitute part meets current compliance requirements.

Q: Is the operating force specification important for substitution?

A: The KT11B0JM34LFS specifies an operating force of 300gf, while the original part does not provide this specification. If operating force is a critical design parameter for your application, this difference should be evaluated against your specific requirements.

Q: Are both parts from the same manufacturer?

A: Yes, both the KT11B0JM and KT11B0JM34LFS are manufactured by C&K and belong to the KT series, ensuring design consistency and compatibility.