NKK Switches B13JB-JA Toggle Switch SPDT Equivalent & Substitute Parts

Part Overview

The NKK Switches B13JB-JA is an active production toggle switch with SPDT (Single Pole Double Throw) circuit configuration, rated for 0.4VA at 28V AC/DC. This through-hole mounted component features a standard round actuator with brass nickel-plated construction and non-illuminated design. The switch is specified for On-Off-On functionality with 50,000 electrical life cycles and operates across -30°C to 85°C. Substitute parts are identified when equivalent electrical ratings, circuit topology, and mechanical mounting compatibility align with application requirements while maintaining active product status and compliance certifications.

Substiute Parts

B13JB-JA

NKK SwitchesIn Stock: 771B13JB-JA Datasheet

Current PartRFQ

34DWMSP36B4M2RT

Grayhill Inc.In Stock: 81734DWMSP36B4M2RT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the B13JB-JA is determined by the following critical parameters:

• Circuit Configuration: Must be SPDT to maintain electrical topology compatibility
• Switch Function: Must support On-Off-On operation
• Current Rating: Must support minimum 0.4VA (AC/DC)
• Voltage Rating: Substitute must meet or exceed 28V AC/DC rating
• Mounting Type: Must be Through Hole for PCB compatibility
• Termination Style: Must use PC Pin termination
• Operating Temperature: Must cover -30°C to 85°C range
• Product Status: Must be Active production status
• Compliance: Must maintain ROHS3 compliance

The Grayhill Inc. 34DWMSP36B4M2RT qualifies as a substitute based on matching SPDT circuit, On-Off-On function, 0.4VA current rating, Through Hole mounting, PC Pin termination, and identical operating temperature range. Voltage rating of 20V AC/DC is lower than the 28V specification; however, this represents a conservative substitution for applications operating at or below 20V.

Parameter Comparison

Engineering Selection Recommendations

Both the NKK Switches B13JB-JA and Grayhill Inc. 34DWMSP36B4M2RT maintain Active product status and ROHS3 compliance. Selection between these components should be based on application voltage requirements. The B13JB-JA is specified for 28V operation and provides 50,000 electrical life cycles. The 34DWMSP36B4M2RT is rated for 20V maximum and delivers 30,000 electrical life cycles but includes IP67 ingress protection (dust tight, waterproof) with epoxy sealed terminals. For applications requiring 28V operation, the B13JB-JA is the appropriate selection. For applications operating at 20V or below where environmental sealing is beneficial, the 34DWMSP36B4M2RT provides enhanced protection.

Frequently Asked Questions (FAQ)

Q: Can the Grayhill 34DWMSP36B4M2RT be used in a 28V circuit designed for the NKK B13JB-JA?

A: No. The Grayhill substitute is rated for maximum 20V AC/DC. Using it in a 28V circuit exceeds its voltage specification and creates reliability risk.

Q: Are the actuator length differences significant for mechanical compatibility?

A: The B13JB-JA has a 6.30mm actuator length while the 34DWMSP36B4M2RT has 6.70mm. Panel cutout dimensions are not specified in the provided data. Verify mechanical clearance in your specific panel assembly before substitution.

Q: What is the difference in electrical life between these switches?

A: The B13JB-JA is rated for 50,000 cycles while the 34DWMSP36B4M2RT is rated for 30,000 cycles. For high-cycle applications, the B13JB-JA provides extended operational life.

Q: Does the IP67 rating of the Grayhill switch affect compatibility?

A: The IP67 ingress protection on the 34DWMSP36B4M2RT is an additional feature not present on the B13JB-JA. This does not prevent substitution in standard applications but indicates enhanced environmental sealing capability.

Q: Are both switches RoHS compliant?

A: Yes. Both the NKK B13JB-JA and Grayhill 34DWMSP36B4M2RT are ROHS3 compliant and REACH unaffected.