MSS24AG Equivalent & Substitute Parts

Part Overview

The MSS24AG is a slide switch manufactured by APEM Inc., configured as a DP4T (Double Pole Four Throw) switch with a rated capacity of 0.4VA at 20V. This through-hole mounted component features gold-plated contacts, epoxy sealed terminals, and is designed for On-On-On-On switching applications. The MSS24AG is classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and component procurement.

Key Parameters

Parameter	Value
Circuit Configuration	DP4T (Double Pole Four Throw)
Current Rating	0.4VA (AC/DC)
Voltage Rating - AC	20V
Voltage Rating - DC	20V
Switch Function	On-On-On-On
Mounting Type	Through Hole
Termination Style	PC Pin
Contact Finish	Gold
Actuator Length	10.40mm
Switch Travel	2.00mm
Operating Temperature Range	-10°C ~ 60°C
Electrical Life	10,000 Cycles
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the MSS24AG is determined by strict equivalence across the following critical parameters:

Circuit Configuration: DP4T topology must be maintained
Electrical Ratings: 0.4VA capacity and 20V AC/DC voltage limits must not be exceeded
Switch Function: On-On-On-On operation required
Mounting and Termination: Through-hole mounting with PC pin termination
Contact System: Gold-plated contacts with epoxy sealed terminals
Physical Dimensions: Actuator length and switch travel within acceptable tolerance

The substitute part 1825200-2 (TE Connectivity ALCOSWITCH Switches) meets all these criteria while offering enhanced performance characteristics and active product status.

Parameter Comparison

Parameter	MSS24AG (APEM Inc.)	1825200-2 (TE Connectivity)	Compatibility
Circuit Configuration	DP4T	DP4T	Equivalent
Current Rating	0.4VA (AC/DC)	0.4VA (AC/DC)	Equivalent
Voltage Rating - AC	20V	20V	Equivalent
Voltage Rating - DC	20V	20V	Equivalent
Switch Function	On-On-On-On	On-On-On-On	Equivalent
Mounting Type	Through Hole	Through Hole	Equivalent
Termination Style	PC Pin	PC Pin	Equivalent
Contact Finish	Gold	Gold	Equivalent
Actuator Length	10.40mm	10.37mm	Compatible (0.03mm variance)
Switch Travel	2.00mm	2.00mm	Equivalent
Operating Temperature Range	-10°C ~ 60°C	-20°C ~ 85°C	Compatible (wider range)
Electrical Life	10,000 Cycles	15,000 Cycles	Compatible (enhanced durability)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent

Engineering Selection Recommendations

The 1825200-2 is a direct functional substitute for the MSS24AG. Both components maintain identical electrical specifications (0.4VA, 20V AC/DC, DP4T configuration) and physical mounting characteristics (through-hole, PC pin termination). The substitute part offers superior performance in operating temperature range (-20°C to 85°C versus -10°C to 60°C) and extended electrical life (15,000 cycles versus 10,000 cycles), with negligible actuator length variance (0.03mm).

The 1825200-2 carries active product status from TE Connectivity ALCOSWITCH Switches, ensuring long-term availability and supply chain continuity. Both parts are ROHS3 compliant and carry identical ECCN and HTSUS classifications, supporting regulatory and procurement consistency.

Frequently Asked Questions (FAQ)

Q: Can the 1825200-2 be used as a direct replacement for the MSS24AG in existing designs?

A: Yes. The 1825200-2 meets all electrical and mechanical specifications of the MSS24AG. The actuator length variance of 0.03mm is within standard mechanical tolerance for through-hole switch applications. Electrical ratings, circuit configuration, and termination style are identical.

Q: What is the primary advantage of substituting to the 1825200-2?

A: The MSS24AG is obsolete, while the 1825200-2 is an active product with confirmed inventory availability. The substitute also provides extended operating temperature range and increased electrical life cycle rating.

Q: Are there any compliance or certification differences between these parts?

A: Both parts are ROHS3 compliant with identical ECCN (EAR99) and HTSUS (8536.50.9050) classifications. No compliance barriers exist for substitution.

Q: Does the 1825200-2 require PCB layout modifications?

A: No. Both parts use identical through-hole PC pin termination and equivalent physical dimensions. Existing PCB designs require no modification.

Q: What is the contact timing specification for the 1825200-2?

A: The 1825200-2 features shorting contact timing (MBB - Make Before Break), which maintains circuit continuity during position transitions.

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