MSS22G Slide Switch DPDT Equivalent & Substitute Parts

Part Overview

The MSS22G is a slide switch DPDT (Double Pole Double Throw) manufactured by APEM Inc., rated for 0.4VA at 20V with through-hole mounting. This component is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. The switch features epoxy sealed terminals, gold contact finish, and a 2.30mm actuator length suitable for standard panel-mount applications.

Substiute Parts

MSS22G

APEM Inc.In Stock: 886MSS22G Datasheet

Current PartRFQ

1825261-2

TE Connectivity ALCOSWITCH SwitchesIn Stock: 32281825261-2 Datasheet

DirectRFQ

1825261-1

TE Connectivity ALCOSWITCH SwitchesIn Stock: 20201825261-1 Datasheet

SimilarRFQ

1825262-2

TE Connectivity ALCOSWITCH SwitchesIn Stock: 29191825262-2 Datasheet

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1825263-2

TE Connectivity ALCOSWITCH SwitchesIn Stock: 10321825263-2 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict parameter matching across electrical and mechanical specifications. The following criteria establish direct equivalency:

Primary Substitution Criteria:

• Circuit configuration: DPDT
• Current rating: 0.4VA (AC/DC)
• Voltage rating: 20V (AC and DC)
• Switch function: On-On
• Mounting type: Through Hole
• Termination style: PC Pin
• Switch travel: 2.00mm
• Actuator type: Standard

Secondary Considerations:

• Actuator length variations affect physical fit and panel clearance
• Contact timing (MBB - Make Before Break) provides enhanced performance over the original specification
• Operating temperature range expansion improves reliability margins
• Mechanical and electrical life ratings indicate durability improvements

The substitute parts are grouped as follows:

Group 1 - Direct Electrical & Mechanical Match (Actuator Length 2.30mm):

• 1825261-2: Identical electrical specifications with enhanced lifecycle ratings

Group 2 - Electrical Match with Actuator Length Variation:

• 1825262-2: 6.20mm actuator length (requires panel clearance verification)
• 1825263-2: 11.00mm actuator length (requires panel clearance verification)

Group 3 - Partial Electrical Match:

• 1825261-1: Different voltage/current rating (300mA at 125V AC) - not suitable for direct substitution

Parameter Comparison

Engineering Selection Recommendations

Recommended Primary Substitute: 1825261-2

Part number 1825261-2 provides direct electrical and mechanical equivalency to the MSS22G with identical actuator length (2.30mm). This TE Connectivity ALCOSWITCH part maintains all critical electrical parameters: DPDT circuit, 0.4VA current rating, and 20V voltage specification. The substitute offers enhanced reliability through increased electrical life (15,000 cycles versus 10,000 cycles) and expanded operating temperature range (-20°C to 85°C versus -10°C to 60°C). Both parts are ROHS3 compliant and feature gold contact finish with epoxy sealed terminals. Active product status ensures ongoing availability and supply chain continuity.

Alternative Substitutes with Actuator Length Variation:

Part number 1825262-2 matches all electrical specifications but features a 6.20mm actuator length compared to the original 2.30mm. This variant requires verification of panel clearance and actuator engagement depth in the target application. ROHS3 compliance and active product status are maintained.

Part number 1825263-2 provides identical electrical specifications with an 11.00mm actuator length. This variant also requires panel clearance verification and is classified as obsolete with RoHS non-compliance, limiting its suitability for new designs.

Not Recommended for Direct Substitution:

Part number 1825261-1 operates at 300mA and 125V AC, which exceeds the original 0.4VA at 20V specification. This part is unsuitable for direct replacement in circuits designed for the MSS22G electrical parameters.

Frequently Asked Questions (FAQ)

Q: Can 1825261-2 be used as a direct replacement for MSS22G?

A: Yes. Part 1825261-2 meets all electrical and mechanical requirements for direct substitution. It maintains DPDT circuit configuration, 0.4VA current rating, 20V voltage specification, 2.30mm actuator length, and through-hole PC pin termination. Enhanced lifecycle ratings and expanded operating temperature range provide additional design margin.

Q: What is the difference between 1825261-2, 1825262-2, and 1825263-2?

A: These parts share identical electrical specifications (DPDT, 0.4VA, 20V) but differ in actuator length. The 1825261-2 maintains the original 2.30mm length. The 1825262-2 features a 6.20mm actuator, and 1825263-2 features an 11.00mm actuator. Actuator length affects panel clearance and engagement depth. Selection depends on physical space constraints and switch travel requirements in the target application.

Q: Why is 1825261-1 not recommended?

A: Part 1825261-1 operates at 300mA and 125V AC, which differs from the MSS22G specification of 0.4VA at 20V. This electrical mismatch makes it unsuitable for circuits designed for the original part's voltage and current parameters.

Q: Are all substitute parts RoHS compliant?

A: Parts 1825261-2, 1825262-2, and 1825261-1 are ROHS3 compliant. Part 1825263-2 is RoHS non-compliant, which may restrict its use in applications requiring environmental compliance certification.

Q: What is the product status significance?

A: Active product status (1825261-2, 1825262-2, 1825261-1) indicates ongoing manufacturer support and supply availability. Obsolete status (MSS22G, 1825263-2) indicates discontinued production, making these parts subject to inventory depletion and potential unavailability for future procurement.

Q: How do contact timing specifications affect substitution?

A: The MSS22G does not specify contact timing. Substitute parts feature Shorting (MBB - Make Before Break) contact timing, which ensures continuity between switch positions during transition. This provides enhanced performance and is compatible with the original application requirements.