MSS42R Equivalent & Substitute Parts

Part Overview

The MSS42R is a slide switch manufactured by APEM Inc., configured as a 4PDT (four-pole double-throw) through-hole component with right-angle mounting. It is rated for 300mA at 125V AC and 30V DC, featuring epoxy sealed terminals and a 2.00mm switch travel. The MSS42R is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement.

Substiute Parts

MSS42R

APEM Inc.In Stock: 857MSS42R Datasheet

Current PartRFQ

1825265-1

TE Connectivity ALCOSWITCH SwitchesIn Stock: 17551825265-1 Datasheet

DirectRFQ

1825265-2

TE Connectivity ALCOSWITCH SwitchesIn Stock: 13341825265-2 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MSS42R are identified based on matching core electrical and mechanical parameters: 4PDT circuit configuration, through-hole right-angle mounting, PC pin termination, 7.00mm actuator length, 2.00mm switch travel, and epoxy sealed terminals. Both substitute parts are manufactured by TE Connectivity ALCOSWITCH Switches and share the MSS series designation.

The substitution logic is based on the following critical parameters:

• Circuit configuration (4PDT)
• Mounting type and orientation (Through Hole, Right Angle)
• Actuator dimensions (7.00mm length, 2.00mm travel)
• Termination style (PC Pin)
• Contact sealing (Epoxy Sealed Terminals)
• RoHS3 compliance

Parameter Comparison

Engineering Selection Recommendations

1825265-1 (Direct Substitute)

Part 1825265-1 is the primary substitute for MSS42R applications. It maintains electrical equivalence with 300mA at 125V AC rating, matching the original part's primary operating parameters. The part is active in production status, ensuring long-term availability. It features an extended operating temperature range (-20°C to 85°C) and increased electrical life (15,000 cycles versus 10,000 cycles), providing improved reliability margins. RoHS3 compliance is maintained. The contact timing specification (Shorting MBB) and actuator material (Polyoxymethylene/Acetal) differ from the original but do not affect functional substitution within the specified electrical and mechanical envelope.

1825265-2 (Similar Substitute)

Part 1825265-2 is a similar substitute suitable only for applications where voltage and current requirements are lower than the original specification. This part is rated for 0.4VA at 20V AC/DC, making it appropriate for low-voltage, low-current circuits. It shares identical mechanical parameters (mounting, actuator dimensions, switch travel) and maintains RoHS3 compliance. The gold contact finish provides enhanced corrosion resistance compared to the silver finish of MSS42R. This part is not suitable for direct replacement in circuits requiring 125V AC or 300mA operation.

Frequently Asked Questions (FAQ)

Q: Can 1825265-1 be used as a direct replacement for MSS42R in all applications?

A: Yes, 1825265-1 is electrically and mechanically equivalent to MSS42R for applications operating at 300mA and 125V AC. The part maintains the same circuit configuration (4PDT), mounting type (through-hole right-angle), actuator dimensions, and termination style. The extended temperature range and increased electrical life provide additional design margin.

Q: What are the key differences between 1825265-1 and 1825265-2?

A: The primary difference is electrical rating. Part 1825265-1 is rated for 300mA at 125V AC, matching MSS42R. Part 1825265-2 is rated for 0.4VA at 20V AC/DC, making it suitable only for low-voltage applications. Both parts share identical mechanical specifications and mounting characteristics.

Q: Is 1825265-2 suitable for replacing MSS42R in a 125V circuit?

A: No. Part 1825265-2 is rated for maximum 20V AC/DC and cannot be used in circuits operating at 125V. Using this part in higher-voltage applications would exceed its voltage rating and create a safety hazard.

Q: Are both substitute parts RoHS3 compliant?

A: Yes. Both 1825265-1 and 1825265-2 are RoHS3 compliant, matching the compliance status of MSS42R.

Q: What is the difference in contact finish between the substitute parts?

A: Part 1825265-1 features a silver contact finish, matching MSS42R. Part 1825265-2 features a gold contact finish, which provides enhanced corrosion resistance in low-voltage applications but is not required for the electrical specifications of MSS42R.

Q: Do the substitute parts have the same mechanical life as MSS42R?

A: The mechanical life specification is not provided for MSS42R. However, both substitute parts specify 15,000 mechanical cycles, compared to 10,000 electrical cycles for the original part, indicating improved durability.

Q: What packaging is available for the substitute parts?

A: Both 1825265-1 and 1825265-2 are supplied in bulk packaging.