KT11B1SAM Equivalent & Substitute Parts

Part Overview

The KT11B1SAM 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, right-angle actuated switch features sealed construction with IP57 ingress protection and operates across a temperature range of -40°C to 90°C. The product is currently obsolete, making identification of compatible substitute components essential for ongoing production, maintenance, and design continuity.

Substiute Parts

KT11B1SAM

C&KIn Stock: 1681KT11B1SAM Datasheet

Current PartRFQ

KT11B1SAM34LFS

C&KIn Stock: 4964KT11B1SAM34LFS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the KT11B1SAM is determined by strict alignment with the following critical parameters:

• Manufacturer & Series: Must be C&K KT series to ensure mechanical and electrical compatibility
• Circuit Configuration & Function: SPST-NO with Off-Mom operation is mandatory
• Mounting & Physical Form Factor: Surface mount, right-angle actuator with gull wing termination and 7.57mm x 4.38mm outline dimensions must be preserved
• Actuator Orientation: Side actuated configuration is required
• Environmental Sealing: IP57 ingress protection and sealed construction must be maintained
• Operating Temperature: -40°C to 90°C range must be supported
• Mechanical Durability: 100,000 cycle mechanical life specification must be met
• Contact Rating Voltage: The substitute part KT11B1SAM34LFS operates at 32VAC/DC, which is lower than the original 50VAC/DC specification. This represents a voltage derating and is acceptable only in applications where the actual operating voltage does not exceed 32V

Parameter Comparison

Engineering Selection Recommendations

The KT11B1SAM34LFS is the direct substitute for the obsolete KT11B1SAM. Both components share identical mechanical form factors, mounting configurations, and environmental sealing specifications. The primary difference is the contact voltage rating: the substitute operates at 32VAC/DC versus the original 50VAC/DC specification.

Compliance Advantage: The KT11B1SAM34LFS is ROHS3 compliant, whereas the original part is RoHS non-compliant. For applications subject to RoHS regulations, the substitute provides regulatory alignment.

Product Status: The substitute part is active and currently in production with 4,854 units in stock, ensuring supply chain continuity compared to the obsolete original part with limited remaining inventory of 1,600 units.

Voltage Derating Consideration: Selection of KT11B1SAM34LFS is appropriate only when the application circuit operates at or below 32VAC/DC. Applications requiring the full 50V rating cannot use this substitute without circuit redesign.

Frequently Asked Questions (FAQ)

Q: Can KT11B1SAM34LFS be used as a direct replacement in all applications?

A: No. The substitute part is rated for 32VAC/DC maximum, compared to the original 50VAC/DC rating. Substitution is valid only in circuits where the actual operating voltage does not exceed 32V. Applications requiring 50V operation require alternative solutions.

Q: Are the physical dimensions and mounting footprints identical?

A: Yes. Both parts share the same 7.57mm x 4.38mm outline dimensions, surface mount right-angle configuration, and gull wing termination style. PCB layouts and mechanical assemblies are fully compatible.

Q: What is the difference in packaging between the two parts?

A: The original KT11B1SAM packaging is not specified in the available data. The substitute KT11B1SAM34LFS is supplied in Tape & Reel (TR) format, which is standard for high-volume surface mount assembly.

Q: Does the substitute part meet RoHS requirements?

A: Yes. The KT11B1SAM34LFS is ROHS3 compliant, whereas the original KT11B1SAM is RoHS non-compliant. For applications subject to RoHS directives, the substitute provides regulatory compliance.

Q: Are the environmental sealing and ingress protection ratings the same?

A: Yes. Both parts maintain IP57 ingress protection (dust protected and waterproof) with sealed construction, ensuring equivalent performance in harsh environments across the -40°C to 90°C operating temperature range.

Q: What is the operating force specification for the substitute part?

A: The KT11B1SAM34LFS specifies an operating force of 300gf. The original part does not provide this specification in the available data.