C&K 7109K2CKI Toggle Switch SPDT Equivalent & Substitute Parts

Part Overview

The C&K 7109K2CKI is a panel-mounted toggle switch with SPDT (Single Pole Double Throw) circuit configuration, rated for 0.4VA at 20V AC/DC. This component features a locking lever actuator with epoxy potting and is designed for applications requiring reliable switching in industrial and commercial environments. The 7109K2CKI is classified as obsolete, making identification of active equivalent parts essential for ongoing procurement and system maintenance.

Substiute Parts

7109K2CKI

C&KIn Stock: 9007109K2CKI Datasheet

Current PartRFQ

7109K2CPI

C&KIn Stock: 7597109K2CPI Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the obsolete 7109K2CKI is based on strict electrical and mechanical parameter matching within the C&K 7000 series. The following parameters define substitution eligibility:

Critical Matching Parameters:

• Circuit configuration: SPDT
• Switch function: On-Mom
• Current rating: 0.4VA (AC/DC)
• Voltage rating: 20V AC and 20V DC
• Mounting type: Panel Mount
• Actuator type: Locking Lever
• Actuator length: 17.88mm
• Panel cutout dimensions: Circular - 6.35mm Dia
• Bushing thread: 1/4-40
• Termination style: PC Pin
• Operating temperature range: -30°C ~ 85°C
• Electrical life: 40,000 Cycles

The substitute part 7109K2CPI maintains identical electrical and mechanical specifications, differing only in product status and regulatory compliance classification.

Parameter Comparison

Engineering Selection Recommendations

The C&K 7109K2CPI is the direct active equivalent for the obsolete 7109K2CKI. Both components are ROHS3 compliant and maintain identical electrical and mechanical specifications. The 7109K2CPI is currently in active production status with 711 units available in stock, whereas the 7109K2CKI is obsolete with limited remaining inventory of 834 units.

For new designs and ongoing procurement, the 7109K2CPI is the appropriate selection. The component provides full functional and mechanical compatibility with existing applications designed for the 7109K2CKI, with no design modifications required.

Frequently Asked Questions (FAQ)

Q: Can the 7109K2CPI directly replace the 7109K2CKI in existing applications?

A: Yes. The 7109K2CPI maintains identical electrical ratings (0.4VA at 20V AC/DC), circuit configuration (SPDT), mechanical dimensions (6.35mm panel cutout, 1/4-40 bushing thread), and actuator specifications (locking lever, 17.88mm length). No circuit modifications or mechanical redesign is required.

Q: What is the difference between the 7109K2CKI and 7109K2CPI?

A: The primary difference is product status. The 7109K2CKI is obsolete, while the 7109K2CPI is active in production. Both components share identical electrical and mechanical parameters, including ROHS3 compliance and epoxy potting features.

Q: Are there any compliance differences between these parts?

A: Both parts are ROHS3 compliant and carry EAR99 ECCN classification. The REACH status differs: the 7109K2CKI is REACH Unaffected, while the 7109K2CPI is REACH Affected. Both maintain MSL 1 (Unlimited) moisture sensitivity level.

Q: What is the panel cutout requirement for installation?

A: Both the 7109K2CKI and 7109K2CPI require a circular panel cutout of 6.35mm diameter with a 1/4-40 bushing thread for secure mounting.

Q: What is the operating temperature range for these switches?

A: Both components operate across -30°C to 85°C, suitable for industrial and commercial applications within this thermal envelope.