Equivalent & Substitute Parts for 34ASP31B1M2RT Toggle Switch

Part Overview

The 34ASP31B1M2RT is an SPDT toggle switch manufactured by Grayhill Inc., rated for 0.4VA at 20V AC/DC. This panel-mount switch features a standard round actuator with PC pin termination and is designed for On-Off-On switching applications. The part is currently active in production with 762 units in stock. Substitute parts are identified based on matching mechanical mounting interfaces, electrical circuit topology, and termination compatibility to ensure direct functional replacement in panel-mount applications.

Substiute Parts

34ASP31B1M2RT

Grayhill Inc.In Stock: 83334ASP31B1M2RT Datasheet

Current PartRFQ

100SP3T1B1M2QEH

E-SwitchIn Stock: 993100SP3T1B1M2QEH Datasheet

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7103SPDCQE

C&KIn Stock: 6797103SPDCQE Datasheet

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7103SYCQE

C&KIn Stock: 17857103SYCQE Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 34ASP31B1M2RT are identified based on the following critical parameters that determine functional interchangeability:

Mechanical Compatibility:

• Panel cutout dimensions (Circular - 6.35mm Dia)
• Bushing thread specification (1/4-40)
• Mounting type (Panel Mount)
• Actuator length and type compatibility

Electrical Compatibility:

• Circuit configuration (SPDT)
• Switch function (On-Off-On)
• Termination style (PC Pin)
• Operating temperature range (-30°C to 85°C)

Regulatory Compliance:

• RoHS compliance status
• REACH compliance status
• ECCN classification

The substitute parts identified (100SP3T1B1M2QEH, 7103SYCQE, 7103SPDCQE) share identical mechanical mounting interfaces and electrical circuit topology. However, substitute parts feature higher current and voltage ratings (5A at 120V AC / 28V DC), which provide enhanced electrical capacity while maintaining backward compatibility with the original 0.4VA / 20V specification through derating principles.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection - 34ASP31B1M2RT (Grayhill Inc.): Recommended for applications requiring REACH Unaffected status and RoHS Compliant certification. This part maintains the original electrical specification of 0.4VA at 20V and is currently in active production with adequate inventory.

Secondary Selection - 100SP3T1B1M2QEH (E-Switch): Suitable for applications where higher electrical capacity is acceptable. This part maintains identical mechanical mounting (6.35mm panel cutout, 1/4-40 bushing thread) and identical actuator length (10.41mm). ROHS3 Compliant and REACH Unaffected status align with modern regulatory requirements. Higher current rating (5A) and voltage rating (120V AC / 28V DC) provide design margin for future application scaling.

Tertiary Selection - 7103SYCQE (C&K): Applicable where ROHS3 Compliant certification is required and REACH Affected status is acceptable. Mechanical compatibility is confirmed through matching panel cutout and bushing thread specifications. Actuator length (10.67mm) is within acceptable tolerance of the original 10.41mm specification. Highest inventory availability (1720 units) supports supply chain continuity.

Quaternary Selection - 7103SPDCQE (C&K): Suitable for applications where anti-rotation actuator design is beneficial for preventing unintended switch position changes. ROHS3 Compliant and REACH Affected status apply. Longer actuator length (12.45mm) requires verification of panel clearance in the target application before selection.

All substitute parts maintain SPDT circuit configuration, On-Off-On switching function, PC pin termination, and -30°C to 85°C operating temperature range, ensuring functional compatibility with the original 34ASP31B1M2RT specification.

Frequently Asked Questions (FAQ)

Q: Can the 100SP3T1B1M2QEH replace the 34ASP31B1M2RT directly in my application?

A: Yes, direct mechanical and electrical replacement is supported. Both parts share identical panel cutout dimensions (6.35mm circular), bushing thread (1/4-40), actuator length (10.41mm), and PC pin termination. The 100SP3T1B1M2QEH provides higher electrical ratings (5A at 120V AC / 28V DC) compared to the original 0.4VA at 20V specification, allowing operation within the original electrical envelope through derating.

Q: What is the difference between the 7103SYCQE and 7103SPDCQE?

A: Both C&K parts share identical electrical specifications (5A at 120V AC / 28V DC), circuit configuration (SPDT), and termination style (PC Pin). The primary difference is the actuator type: 7103SYCQE features a standard round actuator (10.67mm length), while 7103SPDCQE features an anti-rotation actuator (12.45mm length). The anti-rotation design prevents unintended switch position changes due to vibration or mechanical shock. Panel clearance must be verified for the longer 12.45mm actuator before selection.

Q: Are all substitute parts RoHS compliant?

A: Yes, all identified substitute parts are RoHS compliant. The original 34ASP31B1M2RT carries RoHS Compliant status, while all three substitute parts (100SP3T1B1M2QEH, 7103SYCQE, 7103SPDCQE) carry ROHS3 Compliant status, indicating compliance with the most current RoHS directive requirements.

Q: What is the REACH compliance status of these parts?

A: The original 34ASP31B1M2RT and substitute 100SP3T1B1M2QEH are REACH Unaffected. The C&K parts (7103SYCQE and 7103SPDCQE) are REACH Affected, indicating they contain substances of very high concern (SVHC) listed under REACH regulations. Selection between REACH Unaffected and REACH Affected parts depends on end-use application requirements and regional regulatory obligations.

Q: Can I use a substitute part with higher voltage and current ratings in a low-voltage application?

A: Yes. The substitute parts with higher electrical ratings (5A at 120V AC / 28V DC) can be used in applications originally specified for 0.4VA at 20V through derating principles. The switch will operate safely within the lower electrical envelope of the original specification. However, the application circuit design must remain unchanged to ensure proper switch function.

Q: What is the significance of the panel cutout dimension (6.35mm circular)?

A: The 6.35mm circular panel cutout dimension is the mechanical interface between the switch and the panel. All identified substitute parts share this identical specification, ensuring that no panel modification is required for physical installation. This parameter is critical for direct mechanical replacement.

Q: Do all parts have the same electrical life rating?

A: Yes, all parts listed (34ASP31B1M2RT, 100SP3T1B1M2QEH, 7103SYCQE, 7103SPDCQE) specify 40,000 electrical cycles, indicating equivalent mechanical durability and switch contact life under rated operating conditions.

Q: What does the 1/4-40 bushing thread specification mean?

A: The 1/4-40 specification indicates a 1/4-inch diameter thread with 40 threads per inch (TPI). This is the fastening interface between the switch body and the panel. All substitute parts share this identical specification, confirming mechanical compatibility for panel mounting without requiring different fastening hardware.