C&K 7103SHCQE Toggle Switch SPDT Equivalent & Substitute Parts

Part Overview

The C&K 7103SHCQE is a panel-mount toggle switch with SPDT (Single Pole Double Throw) circuit configuration, rated for 5A at 120V AC and 28V DC. This switch features an On-Off-On function with a standard round actuator and PC pin termination. The product is currently active in production with 1,037 units in stock.

Substitute parts are identified when equivalent electrical ratings, mechanical compatibility, and circuit configuration align with the main part specifications. The following alternatives maintain functional compatibility within the defined parameter ranges.

Key Parameters

Parameter	Value
Manufacturer Part Number	7103SHCQE
Manufacturer	C&K
Circuit Configuration	SPDT
Switch Function	On-Off-On
Current Rating (AC/DC)	5A AC / DC
Voltage Rating - AC	120V
Voltage Rating - DC	28V
Mounting Type	Panel Mount
Actuator Type	Standard Round
Termination Style	PC Pin
Panel Cutout Diameter	6.35mm
Bushing Thread	1/4-40
Operating Temperature Range	-30°C to 85°C
Electrical Life	40,000 cycles
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts are qualified based on the following criteria:

Electrical Compatibility: Current and voltage ratings must meet or exceed the main part specifications (5A AC minimum, 120V AC minimum, 28V DC minimum).

Circuit Configuration: SPDT topology with On-Off-On switching function required.

Mechanical Compatibility: Panel mount configuration with standard round actuator, PC pin termination, 1/4-40 bushing thread, and circular panel cutout within acceptable tolerance range (6.35mm nominal).

Environmental Specifications: Operating temperature range and electrical life cycle ratings must support the intended application.

Regulatory Compliance: RoHS and REACH status documented for each part.

The identified substitutes meet these criteria with variations in current ratings, voltage specifications, and product status as detailed in the parameter comparison table.

Parameter Comparison

Parameter	7103SHCQE (C&K)	M2013SS1W03 (NKK Switches)	MTA106EPC (TE Connectivity)
Circuit Configuration	SPDT	SPDT	SPDT
Switch Function	On-Off-On	On-Off-On	On-Off-On
Current Rating - AC	5A	6A	6A
Current Rating - DC	5A	3A	4A
Voltage Rating - AC	120V	125V	125V
Voltage Rating - DC	28V	30V	28V
Mounting Type	Panel Mount	Panel Mount	Panel Mount
Actuator Type	Standard Round	Standard Round	Standard Round
Actuator Length	10.67mm	10.50mm	10.49mm
Termination Style	PC Pin	PC Pin	PC Pin
Panel Cutout Diameter	6.35mm	6.50mm	6.40mm
Bushing Thread	1/4-40	1/4-40	1/4-40
Operating Temperature Range	-30°C to 85°C	-30°C to 85°C	-20°C to 80°C
Electrical Life	40,000 cycles	25,000 cycles	60,000 cycles
Product Status	Active	Obsolete	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant
REACH Status	REACH Affected	REACH Unaffected	REACH Affected

Engineering Selection Recommendations

C&K 7103SHCQE: Primary selection for new designs. Active product status ensures long-term availability. ROHS3 compliant and REACH affected status meets current regulatory requirements. Electrical life of 40,000 cycles supports standard industrial applications.

NKK Switches M2013SS1W03: Obsolete product status limits suitability for new production. ROHS3 compliant. Lower electrical life rating (25,000 cycles) and reduced DC current capacity (3A) restrict application scope. Suitable only for legacy system maintenance where inventory exists.

TE Connectivity MTA106EPC: Active product with superior electrical life (60,000 cycles). Meets voltage and AC current requirements. RoHS non-compliant status may restrict use in regulated markets. Operating temperature range (-20°C to 80°C) is narrower than the main part. Suitable for applications where RoHS compliance is not mandated and temperature range is acceptable.

Frequently Asked Questions (FAQ)

Q: Can M2013SS1W03 replace 7103SHCQE in all applications?

A: No. M2013SS1W03 has reduced DC current capacity (3A versus 5A) and lower electrical life (25,000 versus 40,000 cycles). Additionally, obsolete product status limits availability. Use only in legacy systems where the reduced specifications are acceptable.

Q: Is MTA106EPC suitable for RoHS-regulated applications?

A: No. MTA106EPC is RoHS non-compliant. For applications requiring RoHS compliance, use 7103SHCQE or M2013SS1W03.

Q: What are the panel cutout tolerance considerations?

A: Panel cutout diameters vary slightly: 7103SHCQE (6.35mm), M2013SS1W03 (6.50mm), MTA106EPC (6.40mm). All use 1/4-40 bushing thread. Verify panel hole dimensions accommodate the specific part selected.

Q: Which substitute has the longest operational life?

A: MTA106EPC offers 60,000 electrical cycles, compared to 40,000 for 7103SHCQE and 25,000 for M2013SS1W03. Select MTA106EPC for high-cycle applications where RoHS non-compliance is acceptable.

Q: Are actuator length differences significant?

A: Actuator lengths are within 0.18mm range (10.49mm to 10.67mm). Verify panel thickness and actuator clearance for the specific application. All three parts use standard round actuators with similar engagement characteristics.

Q: What is the temperature operating range difference?

A: 7103SHCQE and M2013SS1W03 operate -30°C to 85°C. MTA106EPC operates -20°C to 80°C. For applications below -20°C or above 80°C, use 7103SHCQE or M2013SS1W03.

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