MSS22 Equivalent & Substitute Parts

Part Overview

The MSS22 is a slide switch DPDT (Double Pole Double Throw) manufactured by APEM Inc., rated for 300mA at 125V AC with through-hole mounting. This component is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. The MSS22 features epoxy sealed terminals, silver contact finish, and operates across a temperature range of -10°C to 60°C with an electrical life rating of 10,000 cycles.

Substiute Parts

MSS22

APEM Inc.In Stock: 827MSS22 Datasheet

Current PartRFQ

1825261-1

TE Connectivity ALCOSWITCH SwitchesIn Stock: 20201825261-1 Datasheet

DirectRFQ

1825261-2

TE Connectivity ALCOSWITCH SwitchesIn Stock: 32281825261-2 Datasheet

SimilarRFQ

1825263-1

TE Connectivity ALCOSWITCH SwitchesIn Stock: 71051825263-1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MSS22 is determined by the following critical parameters:

• Circuit Configuration: Must be DPDT
• Switch Function: Must be On-On
• Current Rating: Must support minimum 300mA AC
• Voltage Rating - AC: Must support minimum 125V
• Mounting Type: Must be Through Hole
• Termination Style: Must be PC Pin
• Actuator Length: 2.30mm (mechanical fit requirement)
• Switch Travel: 2.00mm (mechanical compatibility)
• Contact Finish: Silver (electrical performance consistency)

The substitute parts identified below meet these core requirements while offering improved specifications in areas such as operating temperature range, mechanical life, and electrical life compared to the obsolete MSS22.

Parameter Comparison

Engineering Selection Recommendations

1825261-1 (TE Connectivity ALCOSWITCH)

This part provides direct electrical and mechanical compatibility with the MSS22. It maintains the 300mA AC rating at 125V, identical actuator length of 2.30mm, and silver contact finish. The part is active in production with ROHS3 compliance. Operating temperature range extends to -20°C to 85°C, exceeding the MSS22 specification. Electrical and mechanical life ratings are both 15,000 cycles, representing a 50% improvement over the MSS22. This is the primary substitute for direct replacement applications.

1825263-1 (TE Connectivity ALCOSWITCH)

This part matches the electrical specifications of the MSS22 (300mA AC at 125V) and maintains silver contact finish and through-hole PC pin termination. However, the actuator length is 11.00mm compared to the MSS22's 2.30mm, making this suitable only for applications where increased actuator length is acceptable or required. The part is active in production with ROHS3 compliance and offers the same enhanced operating temperature range and cycle life as 1825261-1.

1825261-2 (TE Connectivity ALCOSWITCH)

This part is not recommended as a direct substitute for the MSS22. While it shares the same circuit configuration (DPDT), switch function (On-On), and mechanical dimensions (2.30mm actuator length, 2.00mm travel), the electrical ratings are significantly reduced: 0.4VA at 20V AC/DC. This part is suitable only for low-voltage, low-current applications and cannot support the MSS22's 300mA at 125V requirement.

Frequently Asked Questions (FAQ)

Q: Can 1825261-1 be used as a direct replacement for MSS22 in existing designs?

A: Yes. The 1825261-1 maintains identical electrical ratings (300mA at 125V AC), actuator length (2.30mm), switch travel (2.00mm), and termination style (PC Pin through-hole). The part is active in production and ROHS3 compliant, making it suitable for direct substitution.

Q: What is the difference between 1825261-1 and 1825263-1?

A: Both parts have identical electrical specifications and are manufactured by TE Connectivity. The primary difference is actuator length: 1825261-1 has a 2.30mm actuator matching the MSS22, while 1825263-1 has an 11.00mm actuator. Select based on mechanical fit requirements in your application.

Q: Why is 1825261-2 listed if it cannot replace the MSS22?

A: The 1825261-2 shares the same base product number (1825261) and mechanical form factor as 1825261-1 but is rated for significantly lower voltage and current. It is included for reference only and is not suitable for applications requiring 300mA at 125V.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All three substitute parts (1825261-1, 1825261-2, and 1825263-1) are ROHS3 compliant, matching the MSS22 compliance status.

Q: What is the operating temperature advantage of the substitute parts?

A: The MSS22 operates from -10°C to 60°C. All TE Connectivity substitutes extend this range to -20°C to 85°C, providing 10°C additional low-temperature capability and 25°C additional high-temperature capability.

Q: Do the substitute parts have improved cycle life?

A: Yes. The MSS22 is rated for 10,000 electrical cycles. Both 1825261-1 and 1825263-1 are rated for 15,000 electrical cycles and 15,000 mechanical cycles, representing a 50% improvement in durability.