Equivalent & Substitute Parts for KT11B0SAM

Part Overview

The KT11B0SAM 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 component features side actuation, surface mount right-angle mounting, and sealed construction with IP57 ingress protection. The part is currently listed as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement planning. The KT11B0SAM series provides reliable switching functionality in applications requiring sealed, waterproof tactile input mechanisms.

Key Parameters

Parameter	Value
Manufacturer	C&K
Series	KT
Circuit Configuration	SPST-NO
Switch Function	Off-Mom (Momentary)
Contact Rating	1VA @ 50VAC/DC
Mounting Type	Surface Mount, Right Angle
Actuator Orientation	Side Actuated
Termination Style	Gull Wing
Outline Dimensions	7.57mm x 4.38mm
Ingress Protection	IP57 - Dust Protected, Waterproof
Operating Temperature Range	-40°C ~ 90°C
Mechanical Life	100,000 Cycles
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the KT11B0SAM is determined by strict equivalence across the following critical parameters:

Circuit Configuration: Must remain SPST-NO
Switch Function: Must remain Off-Mom (Momentary)
Mounting Type: Must remain Surface Mount, Right Angle
Actuator Orientation: Must remain Side Actuated
Termination Style: Must remain Gull Wing
Outline Dimensions: Must remain 7.57mm x 4.38mm
Ingress Protection: Must maintain IP57 rating
Operating Temperature Range: Must maintain -40°C ~ 90°C
Mechanical Life: Must maintain 100,000 Cycles minimum

The substitute part KT11B0SAM34LFS meets all mechanical and functional equivalence criteria. The primary difference is the contact rating voltage specification (32VAC/DC versus 50VAC/DC), which represents a derating of the electrical specification. This substitution is valid for applications where the circuit voltage does not exceed 32V.

Parameter Comparison

Parameter	KT11B0SAM (Main Part)	KT11B0SAM34LFS (Substitute)
Manufacturer	C&K	C&K
Series	KT	KT
Circuit Configuration	SPST-NO	SPST-NO
Switch Function	Off-Mom	Off-Mom
Contact Rating @ Voltage	1VA @ 50VAC/DC	1VA @ 32VAC/DC
Actuator Type	Flush	Flush
Mounting Type	Surface Mount, Right Angle	Surface Mount, Right Angle
Actuator Orientation	Side Actuated	Side Actuated
Termination Style	Gull Wing	Gull Wing
Outline Dimensions	7.57mm x 4.38mm	7.57mm x 4.38mm
Illumination	Non-Illuminated	Non-Illuminated
Ingress Protection	IP57 - Dust Protected, Waterproof	IP57 - Dust Protected, Waterproof
Operating Temperature	-40°C ~ 90°C	-40°C ~ 90°C
Actuator Material	Rubber	Rubber
Mechanical Life	100,000 Cycles	100,000 Cycles
Base Product Number	KT11B0	KT11B0
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Packaging	-	Tape & Reel (TR)

Engineering Selection Recommendations

The KT11B0SAM34LFS is the direct substitute for the obsolete KT11B0SAM. Selection of this substitute is supported by the following factors:

Product Status: The substitute part is Active, ensuring continued availability and manufacturing support, whereas the main part is Obsolete.
Compliance: The substitute part is ROHS3 Compliant, meeting current regulatory requirements. The main part is RoHS non-compliant.
Electrical Compatibility: The substitute part operates at 32VAC/DC, which is suitable for applications operating at or below this voltage. Applications requiring the full 50V rating of the original part require voltage verification before substitution.
Mechanical Equivalence: All mechanical parameters, including mounting type, dimensions, actuator orientation, and ingress protection, are identical.
Packaging: The substitute is available in Tape & Reel (TR) packaging, facilitating automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can KT11B0SAM34LFS be used as a direct replacement for KT11B0SAM?

A: Yes, provided the circuit voltage does not exceed 32VAC/DC. The substitute maintains identical mechanical form factor, mounting configuration, and functional characteristics. Verify circuit voltage requirements before implementation.

Q: What is the primary difference between these two parts?

A: The contact rating voltage differs: KT11B0SAM is rated at 50VAC/DC, while KT11B0SAM34LFS is rated at 32VAC/DC. All other electrical and mechanical specifications are equivalent.

Q: Are the physical dimensions identical?

A: Yes. Both parts share the same outline dimensions of 7.57mm x 4.38mm and identical mounting configuration (Surface Mount, Right Angle with Gull Wing termination).

Q: Does the substitute part maintain the same ingress protection rating?

A: Yes. Both parts maintain IP57 ingress protection (Dust Protected, Waterproof) and sealed construction.

Q: What is the packaging difference?

A: The main part packaging is not specified. The substitute part is supplied in Tape & Reel (TR) packaging, which is standard for automated surface mount assembly.

Q: Are there compliance differences?

A: Yes. The substitute part is ROHS3 Compliant, while the main part is RoHS non-compliant. This makes the substitute suitable for applications with RoHS compliance requirements.

Q: What is the mechanical life expectancy?

A: Both parts are rated for 100,000 cycles of mechanical operation.

Q: Is the operating temperature range the same?

A: Yes. Both parts operate across the temperature range of -40°C to 90°C.

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