APEM Inc. M43G Slide Switch 4P3T Equivalent & Substitute Parts

Part Overview

The APEM Inc. M43G is a 4-pole 3-throw (4P3T) slide switch rated for 0.4VA at 20V AC/DC, designed for through-hole mounting applications. This component features gold-plated contacts, epoxy sealed terminals, and a 9.00mm actuator with 2.00mm travel distance. The M43G operates across a temperature range of -10°C to 60°C with an electrical life rating of 10,000 cycles.

The M43G carries an Obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for legacy systems utilizing this component.

Substiute Parts

M43G

APEM Inc.In Stock: 1093M43G Datasheet

Current PartRFQ

EG4302A

E-SwitchIn Stock: 888EG4302A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the M43G is determined by the following critical parameters:

Circuit Configuration & Function: The substitute part must maintain 4P3T circuit topology with On-On-On switching function to preserve electrical behavior in the host application.

Electrical Ratings: The substitute must support the application's voltage and current requirements. The M43G operates at 20V AC/DC with 0.4VA capacity. Substitute parts with equal or higher voltage and current ratings are electrically compatible.

Physical Compatibility: Actuator length (9.00mm), switch travel distance (2.00mm), mounting type (through hole), and termination style (PC pin) must match to ensure mechanical fit and PCB integration without redesign.

Environmental & Compliance: Operating temperature range, RoHS compliance status, and REACH classification must meet or exceed the original specification to ensure regulatory and operational compatibility.

The E-Switch EG4302A meets these substitution criteria through matching circuit configuration, superior electrical ratings (300mA DC at 30V), identical physical dimensions, and equivalent compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

The E-Switch EG4302A qualifies as a direct substitute for the APEM M43G based on the following engineering criteria:

Electrical Compatibility: The EG4302A provides 300mA DC capacity at 30V, which exceeds the M43G's 0.4VA (AC/DC) at 20V specification. This superior rating ensures the substitute can handle the original application's electrical load without derating.

Physical Compatibility: Both components share identical actuator length (9.00mm), switch travel (2.00mm), mounting type (through hole), and termination style (PC pin). No PCB modifications or mechanical redesign is required for substitution.

Regulatory Compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements for the original application environment.

Product Availability: The EG4302A carries Active product status with 837 units in stock, providing immediate supply chain availability compared to the M43G's Obsolete status.

Operational Range: The EG4302A's operating temperature range (-20°C to 70°C) exceeds the M43G's range (-10°C to 60°C), supporting broader environmental applications.

The contact finish difference (gold versus silver) reflects manufacturing variation between suppliers and does not impact electrical or mechanical substitution suitability for standard switching applications.

Frequently Asked Questions (FAQ)

Q: Can the E-Switch EG4302A directly replace the APEM M43G without PCB modifications?

A: Yes. Both components feature identical actuator length (9.00mm), switch travel (2.00mm), through-hole mounting, and PC pin termination. Direct substitution on existing PCBs is possible without mechanical or electrical redesign.

Q: Does the contact finish difference (gold vs. silver) affect substitution compatibility?

A: Contact finish represents a manufacturing material variation between suppliers. For standard DC switching applications within the specified voltage and current ratings, both gold and silver finishes provide adequate electrical performance. Application-specific requirements for corrosion resistance or contact resistance in specialized environments should be evaluated independently.

Q: Is the EG4302A's higher current rating (300mA) and voltage rating (30V) a concern for the original M43G application?

A: No. Higher electrical ratings on the substitute component provide design margin and do not create compatibility issues. The substitute will operate safely within the original application's electrical requirements (0.4VA at 20V).

Q: What is the significance of the M43G's Obsolete status and the EG4302A's Active status?

A: The M43G's Obsolete designation indicates discontinued production and limited future availability. The EG4302A's Active status ensures ongoing manufacturing, documented supply chain availability, and long-term component sourcing for production and maintenance applications.

Q: Are both components RoHS3 compliant?

A: Yes. Both the APEM M43G and E-Switch EG4302A carry ROHS3 compliance certification and REACH unaffected status, meeting regulatory requirements for electronic component applications in regulated markets.

Q: Does the EG4302A's wider operating temperature range (-20°C to 70°C vs. -10°C to 60°C) provide additional design flexibility?

A: Yes. The EG4302A's extended temperature range supports applications requiring operation in colder or hotter environments than the original M43G specification. This provides additional operational margin for temperature-sensitive applications.