ST11KHCQE Toggle Switch SPDT Equivalent & Substitute Parts

Part Overview

The ST11KHCQE is a panel-mounted toggle switch manufactured by APEM Inc., configured as a Single Pole Double Throw (SPDT) switch with On-On functionality. This component is rated for 6A AC at 125V and 7A DC at 30V, featuring non-illuminated operation with epoxy sealed PC pin terminals. The part is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system maintenance and new design implementations where this switch type is required.

Substiute Parts

ST11KHCQE

APEM Inc.In Stock: 1071ST11KHCQE Datasheet

Current PartRFQ

E101SYCQE

C&KIn Stock: 1015E101SYCQE Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ST11KHCQE is determined by the following critical parameters:

Mandatory Matching Criteria:

• Circuit configuration: SPDT
• Switch function: On-On
• Mounting type: Panel Mount
• Termination style: PC Pin
• Panel cutout dimensions: Circular 6.35mm diameter
• Bushing thread: 1/4-40
• Operating temperature range: -30°C to 85°C minimum

Allowable Variation Parameters:

• Current rating: Substitute must meet or exceed 6A AC at 125V and 7A DC at 30V
• Voltage rating: Substitute must support minimum 125V AC and 30V DC
• Actuator length: Minor variations acceptable within mechanical assembly constraints
• Electrical life cycles: Lower values acceptable for equivalent functionality
• Ingress protection: Enhanced ratings acceptable
• Actuator material finish: Variations acceptable if mechanical properties maintained

The E101SYCQE from C&K qualifies as a direct substitute based on matching all mandatory criteria and exceeding current and voltage specifications.

Parameter Comparison

Engineering Selection Recommendations

The E101SYCQE from C&K is a qualified substitute for the obsolete ST11KHCQE. Both components maintain ROHS3 compliance and identical mechanical interfaces. The E101SYCQE provides enhanced current capacity (7.5A AC/DC versus 6A AC/7A DC) and improved ingress protection (IP57 rating), making it suitable for applications requiring equivalent or more demanding environmental conditions. The E101SYCQE is currently in active production status, ensuring supply chain availability for new designs and replacement applications. The minor reduction in electrical life (40,000 versus 100,000 cycles) and actuator length variation (10.16mm versus 10.41mm) are within acceptable tolerances for panel-mounted toggle switch applications with identical mechanical mounting specifications.

Frequently Asked Questions (FAQ)

Q: Can the E101SYCQE directly replace the ST11KHCQE in existing assemblies?

A: Yes. Both switches share identical panel cutout dimensions (6.35mm circular), bushing thread (1/4-40), termination style (PC Pin), and operating temperature range (-30°C to 85°C). The 0.25mm actuator length difference does not affect mechanical assembly compatibility.

Q: What are the voltage and current compatibility considerations?

A: The E101SYCQE exceeds the ST11KHCQE specifications. It provides 7.5A capacity at 125V AC/DC compared to the original 6A AC at 125V and 7A DC at 30V. The E101SYCQE operates at 28V DC versus the original 30V DC, which is acceptable for standard 28V DC applications.

Q: Does the IP57 rating on the E101SYCQE affect compatibility?

A: No. Enhanced ingress protection is a beneficial characteristic that does not compromise compatibility. Applications not requiring IP57 protection are unaffected by this additional feature.

Q: Are there packaging differences between these parts?

A: The ST11KHCQE is supplied in standard packaging, while the E101SYCQE is supplied in trays. This affects receiving and storage procedures but does not impact functional or mechanical compatibility.

Q: What is the significance of the electrical life difference?

A: The ST11KHCQE is rated for 100,000 cycles while the E101SYCQE is rated for 40,000 cycles. For applications with lower switching frequency, this difference is not operationally significant. Applications requiring extended cycle life should evaluate actual duty cycle requirements against the E101SYCQE specification.