A13KB1 Toggle Switch SPDT Equivalent & Substitute Parts

Part Overview

The A13KB1 is an NKK Switches toggle switch with SPDT (Single Pole Double Throw) circuit configuration, rated for 0.4VA at 28V AC/DC. This through-hole mounted component features an On-Off-On switch function with a 5.00mm lever actuator and process-sealed construction. The part is Active in product status with 754 units currently in stock.

Finding equivalent and substitute parts is necessary when the A13KB1 becomes unavailable, when design requirements change, or when alternative sourcing is required to optimize supply chain efficiency while maintaining functional compatibility.

Substiute Parts

A13KB1

NKK SwitchesIn Stock: 791A13KB1 Datasheet

Current PartRFQ

T103MH9V3BE

C&KIn Stock: 1040T103MH9V3BE Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the A13KB1 is determined by strict alignment of the following critical parameters:

• Circuit configuration must be SPDT
• Switch function must be On-Off-On
• Current rating must support 0.4VA (AC/DC)
• Voltage rating must meet or exceed 28V AC/DC
• Mounting type must be Through Hole
• Termination style must be PC Pin
• Operating temperature range must encompass -30°C to 85°C
• RoHS compliance status must be ROHS3 Compliant

The substitute part T103MH9V3BE from C&K meets the circuit, function, current, mounting, termination, temperature, and RoHS requirements. However, the voltage rating of this substitute is 20V AC/DC, which is below the 28V specification of the main part. This substitute is therefore suitable only for applications where the actual operating voltage does not exceed 20V.

Parameter Comparison

Engineering Selection Recommendations

Both the A13KB1 and T103MH9V3BE are Active products with ROHS3 compliance and REACH status documentation. Selection between these parts must be based on voltage requirements:

• Use A13KB1 for applications requiring 28V AC/DC operation
• Use T103MH9V3BE only when the application voltage does not exceed 20V AC/DC

The T103MH9V3BE has a lower electrical life rating (30,000 cycles versus 50,000 cycles), which may impact component selection for high-cycle applications. Actuator geometry differences (lever versus standard round, 5.00mm versus 5.33mm length) may affect mechanical fit and user interface considerations in the final assembly.

Frequently Asked Questions (FAQ)

Q: Can T103MH9V3BE replace A13KB1 in a 28V circuit?

A: No. The T103MH9V3BE is rated for 20V maximum, which is below the 28V specification. Using this substitute in a 28V circuit exceeds the component's voltage rating and creates a reliability risk.

Q: Are the actuator differences between these parts significant?

A: Yes. The A13KB1 uses a lever actuator (5.00mm), while the T103MH9V3BE uses a standard round actuator (5.33mm). These geometric differences may affect panel cutout compatibility, user interface feel, and mechanical fit. Verify actuator compatibility with your mechanical design before substitution.

Q: What is the impact of the electrical life difference?

A: The A13KB1 is rated for 50,000 cycles, while the T103MH9V3BE is rated for 30,000 cycles. For applications with high switching frequency or long service life requirements, the A13KB1 provides greater cycle durability.

Q: Are both parts RoHS compliant?

A: Yes. Both A13KB1 and T103MH9V3BE are ROHS3 Compliant, meeting current environmental and regulatory requirements.

Q: What is the difference in sealing between these parts?

A: The A13KB1 features process-sealed construction, while the T103MH9V3BE has epoxy-sealed terminals. Both provide environmental protection, but the specific sealing method may differ in performance under specific moisture or chemical exposure conditions.