C&K 7201SYCKE Toggle Switch DPDT Equivalent & Substitute Parts

Part Overview

The C&K 7201SYCKE is a panel-mount toggle switch with DPDT (Double Pole Double Throw) configuration rated for 0.4VA at 20V AC/DC. This component features a standard round actuator with epoxy-sealed PC pin termination and operates across -30°C to 85°C. The part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	7201SYCKE
Manufacturer	C&K
Circuit Configuration	DPDT
Switch Function	On-On
Current Rating	0.4VA (AC/DC)
Voltage Rating - AC	20V
Voltage Rating - DC	20V
Mounting Type	Panel Mount
Panel Cutout Dimensions	Circular - 6.35mm Dia
Bushing Thread	1/4-40
Actuator Type	Standard Round
Actuator Length	10.67mm
Termination Style	PC Pin
Operating Temperature Range	-30°C ~ 85°C
Electrical Life	100,000 Cycles
Product Status	Obsolete
RoHS Status	RoHS Non-Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict alignment with the following critical parameters:

Primary Substitution Criteria:

Circuit configuration: DPDT
Switch function: On-On
Current rating: 0.4VA (AC/DC)
Voltage rating: 20V AC and 20V DC
Mounting type: Panel Mount
Panel cutout dimensions: Circular 6.35mm Dia
Bushing thread: 1/4-40
Termination style: PC Pin
Operating temperature range: -30°C ~ 85°C

Direct Equivalent (Identical Electrical & Mechanical Specifications):

C&K 7201SYCPE: Active product status, ROHS3 compliant, identical electrical ratings and mechanical dimensions

Compatible Substitutes (Matching Core Electrical & Mechanical Parameters):

E-Switch 100AWDP1T1B1M2REH: Matches all critical parameters; actuator length 10.41mm (0.26mm variance); IP67 ingress protection; 30,000 electrical life cycles
E-Switch 100DP1T1B1M2REH: Matches all critical parameters; actuator length 10.41mm; 40,000 electrical life cycles
E-Switch 100DP1T6B15M2REH: Matches all critical parameters; flat anti-rotation actuator; actuator length 12.30mm; 40,000 electrical life cycles
Grayhill 34ADP11B1M2RT: Matches all critical parameters; actuator length 10.41mm; 40,000 electrical life cycles

Higher-Rated Alternatives (Exceeds Electrical Specifications):

E-Switch 100DP1T1B1M2QEH: 5A at 120V AC / 28V DC; compatible mechanical interface
E-Switch 100DP1T1B1M3QEH: 5A at 120V AC / 28V DC; quick connect termination (0.062" / 1.5mm)
E-Switch 100DP1T6B15M2QEH: 5A at 120V AC / 28V DC; flat anti-rotation actuator
Grayhill 34ADP11B1M2QT: 5A at 125V AC / 28V DC; standard round actuator
Grayhill 34ADP11B3M2QT: 5A at 125V AC / 28V DC; actuator length 12.19mm

Parameter Comparison

Part Number	Manufacturer	Current Rating	Voltage AC	Voltage DC	Actuator Type	Actuator Length (mm)	Electrical Life (Cycles)	Product Status	RoHS Status	Ingress Protection
7201SYCKE	C&K	0.4VA	20V	20V	Standard Round	10.67	100,000	Obsolete	Non-Compliant	-
7201SYCPE	C&K	0.4VA	20V	20V	Standard Round	10.67	100,000	Active	ROHS3 Compliant	-
100AWDP1T1B1M2REH	E-Switch	0.4VA	20V	20V	Standard Round	10.41	30,000	Active	ROHS3 Compliant	IP67
100DP1T1B1M2REH	E-Switch	0.4VA	20V	20V	Standard Round	10.41	40,000	Active	ROHS3 Compliant	-
100DP1T6B15M2REH	E-Switch	0.4VA	20V	20V	Flat Anti-Rotation	12.30	40,000	Active	ROHS3 Compliant	-
34ADP11B1M2RT	Grayhill Inc.	0.4VA	20V	20V	Standard Round	10.41	40,000	Active	ROHS3 Compliant	-
100DP1T1B1M2QEH	E-Switch	5A	120V	28V	Standard Round	10.41	40,000	Active	ROHS3 Compliant	-
100DP1T1B1M3QEH	E-Switch	5A	120V	28V	Standard Round	10.41	40,000	Active	ROHS3 Compliant	-
100DP1T6B15M2QEH	E-Switch	5A	120V	28V	Flat Anti-Rotation	12.30	40,000	Active	ROHS3 Compliant	-
34ADP11B1M2QT	Grayhill Inc.	5A	125V	28V	Standard Round	10.41	40,000	Active	ROHS3 Compliant	-
34ADP11B3M2QT	Grayhill Inc.	5A	125V	28V	Standard Round	12.19	40,000	Active	RoHS Compliant	-

Engineering Selection Recommendations

For Direct Replacement (Identical Specifications): C&K 7201SYCPE is the primary recommendation. This part maintains 100% electrical and mechanical compatibility with the 7201SYCKE while offering active product status and ROHS3 compliance. The transition from obsolete to active status ensures long-term supply availability and regulatory alignment.

For Equivalent Performance with Enhanced Reliability: E-Switch 100DP1T1B1M2REH and Grayhill 34ADP11B1M2RT both provide identical electrical ratings and mechanical interfaces. These parts offer 40,000 electrical life cycles (compared to 100,000 in the original), ROHS3 compliance, and active product status. Selection between these options depends on preferred supplier and inventory availability.

For Enhanced Environmental Protection: E-Switch 100AWDP1T1B1M2REH adds IP67 ingress protection (dust tight, waterproof) while maintaining all electrical specifications. This variant suits applications requiring sealed operation. Note the reduced electrical life of 30,000 cycles.

For Actuator Geometry Variations: E-Switch 100DP1T6B15M2REH and Grayhill 34ADP11B3M2QT feature extended actuator lengths (12.30mm and 12.19mm respectively) with flat anti-rotation design. These accommodate panel designs requiring deeper actuator engagement or anti-rotation features.

For Higher Electrical Ratings: E-Switch 100DP1T1B1M2QEH, 100DP1T6B15M2QEH, Grayhill 34ADP11B1M2QT, and 34ADP11B3M2QT support 5A at 120V AC or 125V AC. These are suitable only when the application circuit can tolerate higher voltage and current specifications. All maintain identical mechanical interfaces and panel cutout dimensions.

Compliance Considerations: All recommended substitutes carry ROHS3 compliance or RoHS compliance status, addressing regulatory requirements absent in the obsolete 7201SYCKE. E-Switch 100DP1T1B1M3QEH differs in termination style (quick connect 0.062" / 1.5mm vs. PC pin) and requires circuit redesign for compatibility.

Frequently Asked Questions (FAQ)

Q: Can the 7201SYCPE directly replace the 7201SYCKE without circuit modification? A: Yes. The 7201SYCPE maintains identical electrical ratings (0.4VA, 20V AC/DC), mechanical dimensions (6.35mm panel cutout, 1/4-40 bushing thread), and PC pin termination. No circuit redesign is required.

Q: What is the primary difference between the C&K 7201SYCPE and E-Switch 100DP1T1B1M2REH? A: Both provide identical electrical specifications and mechanical compatibility. The primary differences are manufacturer, electrical life rating (100,000 vs. 40,000 cycles), and supplier availability. The E-Switch variant is suitable when C&K supply is constrained.

Q: Can I use the higher-rated parts (5A, 120V/125V) as direct substitutes? A: Mechanically yes—all parts share the same panel cutout (6.35mm), bushing thread (1/4-40), and PC pin termination. Electrically, higher-rated parts are backward compatible with 0.4VA, 20V circuits. However, circuit design must accommodate the higher ratings if the application requires it. No circuit modification is necessary if the original 0.4VA, 20V specification is maintained.

Q: What does the actuator length difference mean for my application? A: The original 7201SYCKE has a 10.67mm actuator. Substitutes range from 10.41mm to 12.30mm. Shorter actuators (10.41mm) may require panel thickness adjustment. Longer actuators (12.30mm) provide deeper engagement and are suitable for thicker panels or applications requiring anti-rotation features. Verify panel thickness compatibility before selection.

Q: Why does the E-Switch 100AWDP1T1B1M2REH have lower electrical life (30,000 cycles)? A: The IP67 ingress protection (dust tight, waterproof) design reduces electrical life to 30,000 cycles compared to 40,000–100,000 in non-sealed variants. This trade-off is necessary for environmental sealing. Select this part only when environmental protection is required.

Q: What is the difference between PC Pin and Quick Connect termination? A: PC Pin termination uses solder connections to printed circuit boards. Quick Connect (0.062" / 1.5mm) uses blade connectors for push-on attachment. The E-Switch 100DP1T1B1M3QEH uses quick connect termination and requires different PCB design. Standard PC pin variants (7201SYCPE, 100DP1T1B1M2REH, 34ADP11B1M2RT) are recommended for direct replacement.

Q: Are all substitutes RoHS compliant? A: Yes. All recommended substitutes carry ROHS3 compliance or RoHS compliance status. The original 7201SYCKE is RoHS non-compliant. Compliance status is critical for new designs and regulated markets.

Q: Which substitute offers the best long-term availability? A: C&K 7201SYCPE (active status, same manufacturer) and E-Switch 100DP1T1B1M2REH (active status, high inventory) both provide strong availability. Grayhill 34ADP11B1M2RT is also active. Verify current inventory levels with your supplier before final selection.

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