APEM Inc. M23 Slide Switch DP3T 300MA 125V Equivalent & Substitute Parts

Part Overview

The APEM Inc. M23 is a slide switch with DP3T (double pole, three throw) configuration rated for 300mA at 125V AC and 30V DC. This component features through-hole mounting with PC pin termination and epoxy sealed terminals. The product is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value
Circuit Configuration	DP3T (Double Pole, Three Throw)
Switch Function	On-On-On
Current Rating	300mA (AC/DC)
Voltage Rating - AC	125V
Voltage Rating - DC	30V
Mounting Type	Through Hole
Termination Style	PC Pin
Operating Temperature Range	-10°C to 60°C
Electrical Life	10,000 Cycles
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the M23 are selected based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

Circuit configuration must be DP3T
Switch function must be On-On-On
Mounting type must be Through Hole
Termination style must be PC Pin
Voltage rating (AC) must meet or exceed 125V
Current rating must meet or exceed 300mA

Substitute Classification:

Direct Substitute (Electrical Upgrade): CW Industries G-128S-0004 meets all primary criteria with enhanced current rating (500mA) and extended DC voltage rating (125V vs. 30V).

Similar Substitutes (Functional Equivalents): TE Connectivity 1825198-1 and C&K L203031MS02QE both maintain DP3T configuration and On-On-On function with through-hole PC pin termination. These parts provide equivalent or superior electrical performance within the specified parameter ranges.

Parameter Comparison

Parameter	APEM M23	CW Industries G-128S-0004	TE Connectivity 1825198-1	C&K L203031MS02QE
Manufacturer	APEM Inc.	CW Industries	TE Connectivity ALCOSWITCH	C&K
Circuit	DP3T	DP3T	DP3T	DP3T
Switch Function	On-On-On	On-On-On	On-On-On	On-On-On
Current Rating	300mA (AC/DC)	500mA (AC/DC)	300mA (AC)	4A (AC/DC)
Voltage Rating - AC	125V	125V	125V	125V
Voltage Rating - DC	30V	125V	Not Specified	28V
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Termination Style	PC Pin	PC Pin	PC Pin	PC Pin
Actuator Length	9.00mm	8.33mm	10.39mm	9.53mm
Switch Travel	4.00mm	3.94mm	2.00mm	4.06mm
Operating Temperature	-10°C to 60°C	-10°C to 104°C	-20°C to 85°C	-30°C to 65°C
Electrical Life	10,000 Cycles	6,000 Cycles	15,000 Cycles	10,000 Cycles
Contact Finish	Silver	Silver	Silver	Silver
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Not Applicable	ROHS3 Compliant
Product Status	Obsolete	Active	Active	Active

Engineering Selection Recommendations

CW Industries G-128S-0004 is the primary direct substitute. It maintains all core electrical specifications while providing enhanced current capacity (500mA) and superior DC voltage rating (125V). The part is ROHS3 compliant and currently in active production status with 1103 units in stock.

TE Connectivity 1825198-1 serves as a functional equivalent with identical AC voltage and current ratings. This part offers extended mechanical life (15,000 cycles vs. 10,000 cycles) and wider operating temperature range (-20°C to 85°C). Note that RoHS status is not applicable for this part.

C&K L203031MS02QE provides the highest current capacity (4A) among substitute options and maintains ROHS3 compliance. This part is suitable for applications requiring higher current margins. Operating temperature range extends to -30°C, providing broader environmental compatibility.

All substitute parts maintain DP3T configuration, On-On-On switching function, through-hole mounting, and PC pin termination required for direct board-level compatibility.

Frequently Asked Questions (FAQ)

Q: Can the CW Industries G-128S-0004 directly replace the APEM M23 in existing designs?

A: Yes. The G-128S-0004 maintains identical circuit configuration (DP3T), switch function (On-On-On), mounting type (through-hole), and termination style (PC pin). The enhanced current rating (500mA vs. 300mA) and DC voltage rating (125V vs. 30V) provide improved performance margins without requiring design modification.

Q: What are the physical differences between substitute parts?

A: Actuator length varies between 8.33mm (G-128S-0004) and 10.39mm (1825198-1). Switch travel ranges from 2.00mm (1825198-1) to 4.06mm (L203031MS02QE). These dimensional variations may affect panel cutout and mechanical clearance requirements. Verify mechanical fit within your specific application before implementation.

Q: Are all substitute parts RoHS3 compliant?

A: The CW Industries G-128S-0004 and C&K L203031MS02QE are ROHS3 compliant. The TE Connectivity 1825198-1 has RoHS status listed as not applicable. Compliance requirements should be confirmed against your specific regulatory requirements.

Q: Which substitute offers the longest operational life?

A: The TE Connectivity 1825198-1 provides the highest mechanical life rating (15,000 cycles) and electrical life rating (15,000 cycles). The APEM M23 and C&K L203031MS02QE both specify 10,000 electrical cycles. The CW Industries G-128S-0004 specifies 6,000 electrical cycles.

Q: What is the temperature operating range for each substitute?

A: The APEM M23 operates from -10°C to 60°C. Substitutes extend this range: CW Industries G-128S-0004 (-10°C to 104°C), TE Connectivity 1825198-1 (-20°C to 85°C), and C&K L203031MS02QE (-30°C to 65°C). Select based on your application's thermal environment.

Q: Can I use the C&K L203031MS02QE in place of the M23?

A: Yes. The L203031MS02QE maintains all required electrical and mechanical parameters. The significantly higher current rating (4A vs. 300mA) provides substantial design margin. Verify that the 9.53mm actuator length and 4.06mm switch travel accommodate your mechanical design constraints.

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