A12J2P Toggle Switch SPDT Equivalent & Substitute Parts

Part Overview

The A12J2P 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 a standard round polyamide actuator with a 6.30mm length and PC pin termination. The part is actively produced and maintains ROHS3 compliance with unlimited moisture sensitivity rating (MSL 1).

Substitute parts are identified when equivalent electrical performance, mechanical compatibility, and circuit function can be maintained within the specified parameter tolerances for this product category.

Substiute Parts

A12J2P

NKK SwitchesIn Stock: 827A12J2P Datasheet

Current PartRFQ

ET01MD1CBE

C&KIn Stock: 3621ET01MD1CBE Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the A12J2P is determined by the following critical parameters:

• Circuit Configuration: Must be SPDT to maintain functional equivalence
• Switch Function: Must be On-On to preserve operational behavior
• Current Rating: Must support minimum 0.4VA (AC/DC)
• Voltage Rating: Must support minimum 28V AC and 28V DC
• Mounting Type: Must be Through Hole for PCB compatibility
• Termination Style: Must be PC Pin for connection compatibility
• Operating Temperature Range: Must encompass -30°C to 85°C
• RoHS Compliance: Must maintain ROHS3 compliance status

The ET01MD1CBE from C&K meets these substitution criteria with equivalent circuit configuration, current rating, and mounting specifications. Voltage rating differences and enhanced ingress protection are noted in the parameter comparison.

Parameter Comparison

Engineering Selection Recommendations

Both the A12J2P and ET01MD1CBE are actively produced components with ROHS3 compliance. The A12J2P operates at 28V AC/DC with 50,000 electrical life cycles. The ET01MD1CBE operates at 20V AC/DC with 60,000 electrical life cycles and includes IP57 ingress protection with epoxy sealed terminals.

Selection between these parts depends on circuit voltage requirements. The A12J2P is suitable for 28V applications. The ET01MD1CBE is suitable for 20V applications and environments requiring enhanced moisture and dust protection. Both parts maintain identical circuit configuration, current rating, mounting type, and operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can ET01MD1CBE replace A12J2P in a 28V circuit? A: No. The ET01MD1CBE is rated for 20V maximum. Using it in a 28V circuit exceeds its voltage specification and creates a reliability risk.

Q: Are the actuator length differences significant? A: The A12J2P has a 6.30mm actuator length while the ET01MD1CBE has a 6.10mm length. Verify panel cutout and mechanical clearance requirements for your application before substitution.

Q: Do both parts have the same electrical life rating? A: No. The A12J2P is rated for 50,000 cycles while the ET01MD1CBE is rated for 60,000 cycles. Both ratings are suitable for standard industrial applications.

Q: What is the significance of IP57 rating on the ET01MD1CBE? A: IP57 provides dust protection and waterproof sealing. This is relevant only if your application requires enhanced environmental protection beyond the A12J2P specification.

Q: Are both parts RoHS compliant? A: Yes. Both the A12J2P and ET01MD1CBE are ROHS3 compliant.

Q: Can I use A12J2P in a 20V application? A: Yes. The A12J2P is rated for 28V, which exceeds 20V requirements. It is suitable for 20V applications.