MSTS1332K Equivalent & Substitute Parts

Part Overview

The MSTS1332K is a slide switch manufactured by APEM Inc., classified as SP3T (single pole, three throw) with a 300mA DC current rating at 28V. This component features through-hole mounting with epoxy sealed terminals and polyacetal actuator construction. The product is currently obsolete, making identification of compatible substitute components essential for ongoing system maintenance and new design implementations where legacy compatibility is required.

Substiute Parts

MSTS1332K

APEM Inc.In Stock: 735MSTS1332K Datasheet

Current PartRFQ

OS103012MU2QP1

C&KIn Stock: 16686OS103012MU2QP1 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MSTS1332K is determined by strict alignment with the following critical parameters:

• Circuit configuration must be SP3T with On-On-On switching function
• Mounting type must be through-hole with PC pin termination
• Actuator length must be 4.00mm (standard)
• Switch travel must be 2.50mm
• Contact material and finish must support equivalent electrical performance
• Electrical life rating must meet or exceed 10,000 cycles
• RoHS3 compliance and MSL 1 rating must be maintained

The OS103012MU2QP1 from C&K qualifies as a substitute based on matching circuit topology, mounting configuration, actuator dimensions, and switch travel specifications. Both components share identical through-hole PC pin termination, polyacetal actuator material, and equivalent contact finish systems.

Parameter Comparison

Engineering Selection Recommendations

The OS103012MU2QP1 serves as a functional substitute for the obsolete MSTS1332K in applications where the following conditions are satisfied:

• Circuit current demand does not exceed 200mA DC (the limiting parameter for the substitute)
• Operating voltage remains at or below 30V DC
• Operating temperature range of -30°C to 70°C is acceptable for the application environment
• Both components maintain ROHS3 compliance and MSL 1 rating, ensuring regulatory and environmental compatibility

The substitute component is currently in active production status with substantial inventory availability (16,599 units), providing supply chain continuity for legacy system repairs and redesigns. Both parts share identical mechanical interfaces and electrical switching topology, enabling direct functional replacement within the specified parameter constraints.

Frequently Asked Questions (FAQ)

Q: Can the OS103012MU2QP1 directly replace the MSTS1332K in all applications?

A: Direct replacement is possible only when circuit current requirements do not exceed 200mA DC. The MSTS1332K is rated for 300mA, while the substitute is rated for 200mA. Verify actual circuit current draw before substitution.

Q: What are the key mechanical compatibility factors?

A: Both components share identical actuator length (4.00mm), switch travel (2.50mm), through-hole mounting configuration, and PC pin termination. Mechanical fit and PCB layout compatibility are equivalent.

Q: Are there temperature range differences that affect substitution?

A: Yes. The MSTS1332K operates from -20°C to 85°C, while the OS103012MU2QP1 operates from -30°C to 70°C. Applications requiring operation above 70°C or below -30°C must use the original MSTS1332K specification or identify alternative solutions.

Q: Do both components meet the same regulatory requirements?

A: Both components are ROHS3 compliant, REACH unaffected, and carry MSL 1 rating. Regulatory and environmental compliance are equivalent.

Q: What is the primary electrical difference between these components?

A: The OS103012MU2QP1 has a lower current rating (200mA vs. 300mA) and slightly higher voltage rating (30V vs. 28V). Contact material differs (copper alloy vs. brass), though both use silver finish for equivalent contact performance.

Q: Is the substitute component readily available?

A: Yes. The OS103012MU2QP1 is in active production status with 16,599 units in stock, compared to the obsolete MSTS1332K with limited legacy inventory.