MSSA1450 Equivalent & Substitute Parts

Part Overview

The MSSA1450 is a slide switch manufactured by TE Connectivity ALCOSWITCH Switches, configured as a single-pole four-throw (SP4T) switch rated for 300mA at 125V AC. This through-hole mounted component features epoxy sealed terminals, copper alloy contacts with silver finish, and is designed for applications requiring multiple independent switching positions with make-before-break (shorting) contact timing.

The MSSA1450 carries an obsolete product status. Identification of equivalent substitute parts is necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades where this switch function is required.

Substiute Parts

MSSA1450

TE Connectivity ALCOSWITCH SwitchesIn Stock: 1083MSSA1450 Datasheet

Current PartRFQ

1825200-1

TE Connectivity ALCOSWITCH SwitchesIn Stock: 8651825200-1 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MSSA1450 is determined by electrical and mechanical compatibility across the following critical parameters:

Electrical Compatibility Criteria:

• Current rating of 300mA AC or greater
• Voltage rating of 125V AC or greater
• Contact timing configuration of shorting (MBB) type
• Operating temperature range encompassing -20°C to 85°C

Mechanical Compatibility Criteria:

• Through-hole mounting configuration
• PC pin termination style
• Switch travel of 2.00mm
• Operating force of 600gf
• Copper alloy contacts with silver finish

Circuit Configuration Consideration: The MSSA1450 is configured as SP4T (single-pole four-throw). Substitute parts may include DP4T (double-pole four-throw) configurations, which provide equivalent or enhanced switching capability while maintaining all other electrical and mechanical parameters within acceptable tolerance.

Parameter Comparison

Engineering Selection Recommendations

The 1825200-1 is the manufacturer-recommended substitute for the obsolete MSSA1450. This substitution is supported by the following engineering factors:

Electrical Equivalence: All critical electrical parameters are identical: 300mA AC current rating, 125V AC voltage rating, shorting contact timing, and On-On-On-On switch function. The substitute maintains full electrical compatibility with the original design.

Mechanical Equivalence: Mechanical specifications are matched across all critical dimensions and performance criteria. Actuator length variance of 0.04mm (10.41mm versus 10.37mm) is within normal manufacturing tolerance and does not affect functional performance or PCB layout compatibility.

Circuit Configuration Enhancement: The substitute part 1825200-1 provides a DP4T (double-pole four-throw) configuration compared to the SP4T (single-pole four-throw) of the original part. This represents an enhancement in switching capability while maintaining all other specifications. Applications requiring only single-pole functionality will operate correctly with the double-pole substitute.

Compliance and Availability: The MSSA1450 carries obsolete product status with no ongoing manufacturing. The 1825200-1 is an active product with current manufacturing status and ROHS3 compliance certification, ensuring long-term availability and regulatory alignment for new designs and production runs.

Actuator Material Difference: The original MSSA1450 uses polyester actuator material, while the substitute 1825200-1 uses polyamide (PA66) nylon 6/6. Both materials are compatible with the specified operating temperature range of -20°C to 85°C and provide equivalent mechanical performance.

Frequently Asked Questions (FAQ)

Q: Can the 1825200-1 substitute directly replace the MSSA1450 in existing designs?

A: Yes. The 1825200-1 is electrically and mechanically equivalent to the MSSA1450 across all critical parameters. Through-hole mounting, PC pin termination, and physical dimensions are compatible with existing PCB layouts. The actuator length difference of 0.04mm is within normal manufacturing tolerance and does not affect mechanical fit or electrical performance.

Q: What is the difference between SP4T and DP4T circuit configurations?

A: SP4T (single-pole four-throw) provides one independent switching path with four selectable positions. DP4T (double-pole four-throw) provides two independent switching paths, each with four selectable positions. The 1825200-1 DP4T configuration offers enhanced switching capability. Applications requiring only single-pole functionality will operate correctly by using only one pole of the double-pole switch.

Q: Are the electrical ratings identical between the MSSA1450 and 1825200-1?

A: Yes. Both parts are rated for 300mA AC current and 125V AC voltage. Contact timing, operating temperature range (-20°C to 85°C), mechanical life (15,000 cycles), and electrical life (15,000 cycles) are identical.

Q: What is the significance of the ROHS3 compliance on the 1825200-1?

A: The 1825200-1 carries ROHS3 (Restriction of Hazardous Substances Directive 3) compliance certification, indicating conformance to current European environmental and safety regulations. The original MSSA1450 lists RoHS status as not applicable due to its obsolete status. The substitute part's compliance certification ensures regulatory alignment for new production and design implementations.

Q: Are there any packaging differences between these parts?

A: The MSSA1450 is listed with packaging designation "-" (not specified), while the 1825200-1 is supplied in bulk packaging. Both parts use identical PC pin termination and through-hole mounting configuration. Bulk packaging of the substitute part does not affect individual component specifications or performance.

Q: What is the operating force specification, and does it differ between parts?

A: Both the MSSA1450 and 1825200-1 specify an operating force of 600gf (gram-force). This parameter defines the actuation force required to move the switch between positions and is identical for both parts, ensuring equivalent user interface feel and mechanical response.

Q: Can the 1825200-1 be used in applications with temperature extremes?

A: Both parts operate across the identical temperature range of -20°C to 85°C. The 1825200-1 uses polyamide (PA66) actuator material, which is rated for this full range. Applications operating within this temperature specification will function correctly with the substitute part.