MS12ASW13 Equivalent & Substitute Parts Reference

Part Overview

The MS12ASW13 is a slide switch manufactured by NKK Switches, classified as SPDT (Single Pole Double Throw) with through-hole mounting. This component is rated for 6A at 125V AC and features non-shorting contact timing with an on-on switch function. The product is currently obsolete, making identification of compatible substitute parts essential for ongoing system maintenance and component sourcing.

Substiute Parts

MS12ASW13

NKK SwitchesIn Stock: 1371MS12ASW13 Datasheet

Current PartRFQ

MSN12ASW13

NKK SwitchesIn Stock: 961MSN12ASW13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MS12ASW13 is determined by the following critical parameters:

Circuit Configuration & Function: The substitute must maintain SPDT topology with on-on switch function and non-shorting (BBM) contact timing to preserve electrical behavior in the original application.

Electrical Ratings: Current and voltage ratings are primary substitution criteria. The original part is rated 6A at 125V AC. Substitute parts must meet or exceed these ratings to ensure safe operation without derating.

Mechanical Interface: Through-hole mounting with PC pin termination is mandatory for PCB compatibility. Actuator dimensions (length and travel distance) must be within acceptable tolerances to ensure proper mechanical fit and actuation.

Environmental & Compliance: Operating temperature range (-30°C to 85°C), contact material (Silver Alloy), and RoHS3 compliance must be maintained or exceeded.

Parameter Comparison

Engineering Selection Recommendations

The MSN12ASW13 is the manufacturer-recommended substitute for the obsolete MS12ASW13. Both parts are manufactured by NKK Switches and share identical circuit topology, contact timing, and voltage ratings.

Current Rating Consideration: The MSN12ASW13 is rated for 3A AC, compared to the original 6A rating. This part is suitable for applications requiring ≤3A at 125V AC. Applications exceeding 3A require alternative sourcing.

Mechanical Life Consideration: The substitute is rated for 50,000 mechanical cycles versus the original 100,000 cycles. This difference should be evaluated against application duty cycle requirements.

Compliance & Availability: The MSN12ASW13 maintains ROHS3 compliance and is currently in active production with documented inventory availability (869 pcs), ensuring reliable sourcing compared to the obsolete original part.

Physical Compatibility: Actuator dimensions differ by only 0.01mm in both length and travel distance, presenting negligible impact on mechanical fit and actuation characteristics in standard through-hole PCB applications.

Frequently Asked Questions (FAQ)

Q: Can the MSN12ASW13 directly replace the MS12ASW13 in all applications?

A: Direct replacement is valid only for applications requiring ≤3A at 125V AC. The original MS12ASW13 is rated 6A; applications exceeding 3A require alternative parts or design modification.

Q: What is the significance of the different mechanical life ratings?

A: The MS12ASW13 is rated for 100,000 mechanical cycles while the MSN12ASW13 is rated for 50,000 cycles. Applications with high-frequency switching should evaluate whether the lower cycle rating meets operational requirements.

Q: Are the actuator dimension differences significant?

A: No. The differences of 0.01mm in actuator length and switch travel are within standard manufacturing tolerances and do not affect mechanical fit or actuation in through-hole PCB applications.

Q: Why is the original part obsolete?

A: The MS12ASW13 has been discontinued by NKK Switches. The MSN12ASW13 represents the current production equivalent within the NKK Switches product line.

Q: Are both parts RoHS compliant?

A: Yes. Both the MS12ASW13 and MSN12ASW13 are ROHS3 compliant, meeting environmental and regulatory requirements for electronic component manufacturing.

Q: What packaging is available for the substitute part?

A: The MSN12ASW13 is available in bulk packaging, consistent with the original part's packaging format.