ES03MCKE Equivalent & Substitute Parts

Part Overview

The ES03MCKE is a slide switch manufactured by C&K, featuring SPDT (Single Pole Double Throw) configuration with 0.4VA rating at 20V. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement. The switch is designed for through-hole mounting applications requiring sealed terminal construction with IP57 protection rating.

Key Parameters

Parameter	ES03MCKE
Manufacturer	C&K
Circuit Configuration	SPDT
Current Rating	0.4VA (AC/DC)
Voltage Rating (AC/DC)	20V
Switch Function	On-Off-On
Mounting Type	Through Hole
Termination Style	PC Pin
Contact Finish	Gold
Operating Temperature Range	-30°C to 85°C
Mechanical Life	40,000 Cycles
Electrical Life	40,000 Cycles
Product Status	Obsolete
RoHS Status	RoHS Non-Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the ES03MCKE is determined by the following critical parameters:

Circuit configuration must be SPDT
Current rating must support 0.4VA minimum
Voltage rating must support 20V AC/DC minimum
Switch function must be On-Off-On
Mounting type must be through hole with PC pin termination
Contact finish must be gold-plated

Based on these criteria, substitute parts are grouped into two categories:

Direct Equivalents (Highest Compatibility): Parts meeting all critical electrical and mechanical parameters with minimal design variation.

Similar Substitutes (Functional Compatibility): Parts meeting core electrical requirements with acceptable parameter variations for specific applications.

Parameter Comparison

Parameter	ES03MCKE (Main)	ES03MCBE	1825032-2	ASE1E-2M-10-Z	TSS11EGPC
Manufacturer	C&K	C&K	TE Connectivity ALCOSWITCH	Nidec Components	TE Connectivity ALCOSWITCH
Series	ES	ES	SE	ASE	TSS
Circuit	SPDT	SPDT	SPDT	SPDT	SPDT
Current Rating	0.4VA (AC/DC)	0.4VA (AC/DC)	0.4VA (AC/DC)	50mA (AC/DC)	0.4VA (AC/DC)
Voltage Rating (AC/DC)	20V	20V	20V	60V	20V
Switch Function	On-Off-On	On-Off-On	On-Off-On	On-Off-On	On-Off-On
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Termination Style	PC Pin	PC Pin	PC Pin	PC Pin	PC Pin
Contact Finish	Gold	Gold	Gold	Gold	Gold
Operating Temperature	-30°C to 85°C	-30°C to 85°C	-20°C to 80°C	-20°C to 85°C	-20°C to 80°C
Mechanical Life	40,000 Cycles	40,000 Cycles	10,000 Cycles	Not Specified	60,000 Cycles
Electrical Life	40,000 Cycles	40,000 Cycles	10,000 Cycles	10,000 Cycles	60,000 Cycles
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	Non-Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	Not Applicable

Engineering Selection Recommendations

ES03MCBE: This C&K part is the primary direct equivalent, maintaining identical electrical ratings (0.4VA, 20V), circuit configuration (SPDT), and operating temperature range (-30°C to 85°C). The part is active and ROHS3 compliant, addressing regulatory requirements where the obsolete ES03MCKE does not. Packaging differs (tray versus unspecified), but electrical and mechanical compatibility is complete.

TSS11EGPC: This TE Connectivity ALCOSWITCH part meets all core electrical requirements (0.4VA, 20V, SPDT, On-Off-On) with enhanced mechanical life (60,000 cycles versus 40,000). Operating temperature range is reduced to -20°C to 80°C. This part is suitable for applications where extended mechanical durability is beneficial and the narrower temperature range is acceptable.

1825032-2: This TE Connectivity part maintains electrical compatibility (0.4VA, 20V, SPDT) but exhibits reduced mechanical and electrical life (10,000 cycles). Operating temperature is limited to -20°C to 80°C. This part is suitable only for applications with lower cycle count requirements and within the specified temperature window.

ASE1E-2M-10-Z: This Nidec part has reduced current capacity (50mA versus 0.4VA) and elevated voltage rating (60V). While functionally compatible as an SPDT switch, the current rating reduction makes this part suitable only for low-power applications. Mechanical life is not specified.

Frequently Asked Questions (FAQ)

Q: Can ES03MCBE directly replace ES03MCKE without circuit modification?

A: Yes. ES03MCBE maintains identical electrical ratings (0.4VA, 20V), circuit configuration (SPDT), and operating temperature range (-30°C to 85°C). The only difference is packaging format (tray). No circuit modification is required.

Q: What is the primary reason to select a substitute part?

A: The ES03MCKE is obsolete. Active substitute parts ensure long-term procurement availability and support for new designs. ES03MCBE is the recommended choice for direct replacement.

Q: Are there temperature limitations with substitute parts?

A: Yes. TSS11EGPC, 1825032-2, and ASE1E-2M-10-Z have reduced operating temperature ranges (-20°C to 80°C) compared to the ES03MCKE (-30°C to 85°C). Applications requiring the full -30°C to 85°C range must use ES03MCBE.

Q: Which substitute part has the longest mechanical life?

A: TSS11EGPC offers 60,000 cycles of mechanical life, exceeding the ES03MCKE specification of 40,000 cycles. This part is suitable for high-cycle applications.

Q: Can ASE1E-2M-10-Z be used in place of ES03MCKE?

A: ASE1E-2M-10-Z has reduced current capacity (50mA versus 0.4VA) and is suitable only for low-power applications. It is not a general-purpose replacement for ES03MCKE.

Q: What is the packaging difference between ES03MCKE and ES03MCBE?

A: ES03MCKE packaging is unspecified. ES03MCBE is supplied in tray packaging. Both parts are electrically and mechanically identical.

Q: Are all substitute parts RoHS compliant?

A: ES03MCBE, 1825032-2, and ASE1E-2M-10-Z are ROHS3 compliant. TSS11EGPC has not applicable RoHS status. The obsolete ES03MCKE is RoHS non-compliant.

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