34DWMSP12B4M7RT Toggle Switch SPDT Equivalent & Substitute Parts

Part Overview

The 34DWMSP12B4M7RT is a Single Pole Double Throw (SPDT) toggle switch manufactured by Grayhill Inc., designed for through-hole, right-angle vertical mounting applications. This non-illuminated switch operates at 0.4VA with voltage ratings of 20V AC/DC and features epoxy sealed terminals for environmental protection. The part is Active status and ROHS3 compliant, making it suitable for industrial and commercial electronic assemblies requiring reliable switching functionality with IP67 ingress protection.

Equivalent and substitute parts are identified when design requirements change, inventory constraints occur, or when sourcing from alternative manufacturers becomes necessary while maintaining electrical and mechanical compatibility within specified parameters.

Key Parameters

Parameter	Specification
Manufacturer Part Number	34DWMSP12B4M7RT
Manufacturer	Grayhill Inc.
Series	34D
Circuit Configuration	SPDT
Switch Function	On-On
Current Rating	0.4VA (AC/DC)
Voltage Rating - AC	20 V
Voltage Rating - DC	20 V
Mounting Type	Through Hole, Right Angle, Vertical
Actuator Type	Standard Round
Actuator Length	6.10mm
Termination Style	PC Pin
Ingress Protection	IP67 - Dust Tight, Waterproof
Operating Temperature Range	-30°C ~ 85°C
Electrical Life	30,000 Cycles
RoHS Status	ROHS3 Compliant
Product Status	Active

Substitute Part Grouping Explanation

Substitute parts for the 34DWMSP12B4M7RT are classified based on strict electrical and mechanical parameter compatibility. The primary substitution criteria are:

Core Compatibility Parameters:

Circuit configuration (SPDT)
Switch function (On-On)
Mounting type (Through Hole, Right Angle, Vertical)
Termination style (PC Pin)
Operating temperature range (-30°C ~ 85°C)
Actuator type (Standard Round)
Material composition (Brass, Chrome Plated)

Electrical Parameter Matching: Substitutes must operate within the voltage and current specifications of the application. Parts are grouped into two categories:

Group 1 - Direct Electrical Equivalents (0.4VA, 20V): Parts with identical current and voltage ratings to the main part, allowing direct replacement in applications with the same electrical load requirements.

Group 2 - Higher Rated Alternatives (3A, 120V AC / 28V DC): Parts with elevated electrical ratings that provide additional capacity margin. These parts are electrically compatible in applications operating below their maximum ratings but offer enhanced performance headroom.

Parameter Comparison

Parameter	34DWMSP12B4M7RT (Grayhill)	200MSP1T2B2M7RE (E-Switch)	ET01MD1AVGE (C&K)	ET01MD1AVQE (C&K)	T101MH9AVBE (C&K)
Circuit Configuration	SPDT	SPDT	SPDT	SPDT	SPDT
Switch Function	On-On	On-On	On-On	On-On	On-On
Current Rating	0.4VA (AC/DC)	0.4VA (AC/DC)	3A (AC/DC)	3A (AC/DC)	0.4VA (AC/DC)
Voltage Rating - AC	20 V	20 V	120 V	120 V	20 V
Voltage Rating - DC	20 V	20 V	28 V	28 V	20 V
Mounting Type	Through Hole, Right Angle, Vertical	Through Hole, Right Angle, Vertical	Through Hole, Right Angle, Vertical	Through Hole, Right Angle, Vertical	Through Hole, Right Angle, Vertical
Actuator Type	Standard Round	Standard Round	Standard Round	Standard Round	Standard Round
Actuator Length	6.10mm	5.33mm	6.10mm	6.10mm	5.33mm
Termination Style	PC Pin	PC Pin	PC Pin	PC Pin	PC Pin
Ingress Protection	IP67	Not specified	IP57	IP57	Not specified
Operating Temperature	-30°C ~ 85°C	-30°C ~ 85°C	-30°C ~ 85°C	-30°C ~ 85°C	-30°C ~ 85°C
Electrical Life	30,000 Cycles	30,000 Cycles	60,000 Cycles	60,000 Cycles	60,000 Cycles
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Direct Substitution - Electrical Equivalents:

The 200MSP1T2B2M7RE (E-Switch) and T101MH9AVBE (C&K) are direct electrical equivalents to the 34DWMSP12B4M7RT, sharing identical current (0.4VA) and voltage ratings (20V AC/DC). Both parts maintain SPDT On-On configuration with PC Pin termination and identical operating temperature range. Selection between these three parts depends on:

Packaging preference (Bulk vs. Tray)
Actuator length tolerance (6.10mm vs. 5.33mm)
Ingress protection requirements (IP67 vs. unspecified)
Electrical life cycle requirements (30,000 vs. 60,000 cycles)
Manufacturer supply chain and lead time

Higher-Rated Alternatives:

The ET01MD1AVGE and ET01MD1AVQE (both C&K) provide elevated electrical ratings (3A, 120V AC / 28V DC) while maintaining SPDT On-On configuration and identical mounting characteristics. These parts are suitable for applications where the 34DWMSP12B4M7RT operates below maximum ratings and where additional performance margin is required. Both C&K parts offer extended electrical life (60,000 cycles) and IP57 ingress protection.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance and are Active status products. The 34DWMSP12B4M7RT, 200MSP1T2B2M7RE, and T101MH9AVBE are REACH Unaffected or REACH Affected status; verify REACH compliance requirements for your specific application jurisdiction.

Frequently Asked Questions (FAQ)

Q: Can the 200MSP1T2B2M7RE directly replace the 34DWMSP12B4M7RT?

A: Yes. Both parts share identical electrical specifications (0.4VA, 20V AC/DC), SPDT On-On configuration, PC Pin termination, and operating temperature range. The primary difference is actuator length (5.33mm vs. 6.10mm) and packaging format (Bulk vs. Tray). Verify mechanical clearance in your application before substitution.

Q: What is the difference between the direct equivalents and the C&K ET01MD series?

A: The ET01MD1AVGE and ET01MD1AVQE provide higher electrical ratings (3A, 120V AC / 28V DC) compared to the 0.4VA, 20V specifications of the 34DWMSP12B4M7RT. These higher-rated parts are electrically compatible in applications operating below their maximum ratings and offer extended electrical life (60,000 cycles vs. 30,000 cycles) and improved ingress protection (IP57 vs. IP67).

Q: Are there mechanical compatibility concerns when substituting parts with different actuator lengths?

A: Yes. The 34DWMSP12B4M7RT and ET01MD series feature 6.10mm actuator length, while the 200MSP1T2B2M7RE and T101MH9AVBE feature 5.33mm actuator length. Panel cutout dimensions and actuator engagement depth must be verified to ensure proper mechanical fit and operational clearance in your assembly.

Q: What ingress protection rating should I select?

A: The 34DWMSP12B4M7RT provides IP67 (Dust Tight, Waterproof) protection. The ET01MD series provides IP57 (Dust Protected, Waterproof) protection. The 200MSP1T2B2M7RE and T101MH9AVBE do not specify ingress protection ratings. Select based on your environmental exposure requirements and application moisture/dust conditions.

Q: Can I use the higher-rated C&K ET01MD parts in a 20V application?

A: Yes. The ET01MD1AVGE and ET01MD1AVQE are rated for 120V AC / 28V DC maximum, which exceeds the 20V requirement of the 34DWMSP12B4M7RT application. Operating at lower voltage and current levels than maximum ratings is standard practice and does not compromise switch performance or reliability.

Q: What is the difference between ET01MD1AVGE and ET01MD1AVQE?

A: Both parts are electrically and mechanically identical with 3A, 120V AC / 28V DC ratings, SPDT On-On configuration, and 60,000 cycle electrical life. The difference is in packaging format (Tray) and internal design variant designation. Electrical and mechanical substitution compatibility is equivalent.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (200MSP1T2B2M7RE, ET01MD1AVGE, ET01MD1AVQE, T101MH9AVBE) are ROHS3 compliant, matching the compliance status of the 34DWMSP12B4M7RT.

Q: What is the electrical life difference between parts?

A: The 34DWMSP12B4M7RT and 200MSP1T2B2M7RE are rated for 30,000 cycles. The ET01MD1AVGE, ET01MD1AVQE, and T101MH9AVBE are rated for 60,000 cycles. Higher cycle ratings indicate extended operational life under repeated switching conditions.

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