MSS4250 Equivalent & Substitute Parts

Part Overview

The MSS4250 is a slide switch manufactured by TE Connectivity ALCOSWITCH Switches, configured as a 4PDT (four-pole double-throw) through-hole component rated for 300mA AC at 125V. This switch features a standard actuator with 12.00mm length, silver-plated copper alloy contacts, and epoxy-sealed PC pin terminations. The MSS4250 is classified as obsolete, necessitating identification of active equivalent components to maintain design continuity and ensure ongoing component availability for production and repair applications.

Substiute Parts

MSS4250

TE Connectivity ALCOSWITCH SwitchesIn Stock: 1135MSS4250 Datasheet

Current PartRFQ

1825266-1

TE Connectivity ALCOSWITCH SwitchesIn Stock: 11671825266-1 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete MSS4250 is based on electrical and mechanical parameter equivalence. The substitute part 1825266-1 maintains identical specifications across all critical switching parameters: 4PDT circuit configuration, 300mA AC current rating, 125V AC voltage rating, shorting contact timing (MBB), On-On switch function, standard actuator type, 12.00mm actuator length, copper alloy contacts with silver finish, through-hole mounting, PC pin termination, -20°C to 85°C operating temperature range, 2.00mm switch travel, 15,000 cycle mechanical and electrical life ratings, and 600gf operating force.

The key parameters determining substitution eligibility are:

• Circuit configuration (4PDT)
• Current and voltage ratings (300mA AC / 125V AC)
• Contact timing and switch function (Shorting MBB / On-On)
• Physical dimensions (12.00mm actuator length, 2.00mm travel)
• Contact material and finish (Copper Alloy / Silver)
• Mounting and termination characteristics (Through Hole / PC Pin)
• Environmental operating range (-20°C to 85°C)
• Mechanical and electrical life (15,000 cycles)

Parameter Comparison

Engineering Selection Recommendations

The part 1825266-1 is the direct equivalent substitute for the obsolete MSS4250. Both components are manufactured by TE Connectivity ALCOSWITCH Switches and share identical electrical and mechanical specifications across all critical parameters. The primary distinction is product status: the MSS4250 is obsolete, while 1825266-1 is active and currently in production.

The 1825266-1 substitute provides additional compliance advantage through ROHS3 certification, ensuring alignment with current regulatory requirements for electronic components. Both parts carry identical ECCN (EAR99) and HTSUS (8536.50.9050) classifications, confirming equivalent trade and export status.

For applications currently utilizing the MSS4250, direct substitution with 1825266-1 requires no circuit redesign, PCB layout modification, or functional revalidation, as all electrical performance characteristics, physical dimensions, and environmental operating parameters are identical. The through-hole mounting configuration, PC pin termination, and epoxy-sealed terminal design remain unchanged.

Frequently Asked Questions (FAQ)

Q: Can 1825266-1 be used as a direct replacement for MSS4250 in existing designs?

A: Yes. The 1825266-1 is electrically and mechanically identical to the MSS4250 across all specified parameters. No circuit modifications, PCB layout changes, or functional revalidation are required for direct substitution.

Q: What is the primary reason for substituting the MSS4250?

A: The MSS4250 is classified as obsolete. The 1825266-1 is an active production component from the same manufacturer with identical specifications, ensuring continued component availability.

Q: Are the physical dimensions of 1825266-1 identical to MSS4250?

A: Yes. Both components have identical actuator length (12.00mm), switch travel (2.00mm), and mounting configuration (through-hole with PC pin termination). No PCB modifications are necessary.

Q: Do both parts have the same electrical ratings?

A: Yes. Both the MSS4250 and 1825266-1 are rated for 300mA AC at 125V, with identical 4PDT circuit configuration, shorting contact timing (MBB), and On-On switch function.

Q: What is the difference in compliance certifications between these parts?

A: The 1825266-1 carries ROHS3 compliance certification, while the MSS4250 does not specify RoHS status. Both parts share identical ECCN (EAR99) and HTSUS (8536.50.9050) classifications.

Q: Are the operating temperature ranges the same?

A: Yes. Both components operate across the identical temperature range of -20°C to 85°C.

Q: Do both parts have the same mechanical and electrical life ratings?

A: Yes. Both the MSS4250 and 1825266-1 are rated for 15,000 mechanical cycles and 15,000 electrical cycles with identical 600gf operating force.

Q: What packaging is available for the substitute part?

A: The 1825266-1 is supplied in bulk packaging, compared to the MSS4250 which does not specify packaging format.