Equivalent & Substitute Parts for 34CMSP12B2M2RT Toggle Switch

Part Overview

The 34CMSP12B2M2RT is an SPDT toggle switch manufactured by Grayhill Inc., designed for through-hole mounting applications requiring low-voltage switching up to 20V and 0.4VA current capacity. This component is part of the active 34C series and is ROHS3 compliant with unlimited moisture sensitivity rating. Alternative equivalent parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications with identical or compatible electrical and mechanical requirements.

Substiute Parts

34CMSP12B2M2RT

Grayhill Inc.In Stock: 123334CMSP12B2M2RT Datasheet

Current PartRFQ

1825219-3

TE Connectivity ALCOSWITCH SwitchesIn Stock: 14231825219-3 Datasheet

SimilarRFQ

200MSP1T2B4M2QE

E-SwitchIn Stock: 2236200MSP1T2B4M2QE Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 34CMSP12B2M2RT are identified based on strict electrical and mechanical compatibility criteria. The primary substitution parameters are:

Critical Matching Parameters:

• Circuit configuration: SPDT
• Switch function: On-On
• Mounting type: Through Hole
• Termination style: PC Pin
• Actuator type: Standard Round
• Operating temperature range: -30°C to 85°C
• RoHS compliance: ROHS3 Compliant

Allowable Variation Parameters:

• Current rating: Equal to or greater than 0.4VA
• Voltage rating (AC/DC): Equal to or greater than 20V
• Actuator length: Within mechanical tolerance for panel mounting
• Electrical life: Equal to or greater than 30,000 cycles
• Actuator material finish: Brass with plating variations

Two substitute parts meet these criteria with documented compatibility:

1. 1825219-3 (TE Connectivity ALCOSWITCH Switches, TT Series): Matches all critical parameters with enhanced electrical life (80,000 cycles) and identical voltage/current ratings.

2. 200MSP1T2B4M2QE (E-Switch, 200 Series): Matches all critical parameters with higher current capacity (3A) and voltage ratings (120V AC / 28V DC), providing superior performance margin for the same mechanical form factor.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Identical Electrical Performance):

The 1825219-3 from TE Connectivity ALCOSWITCH Switches is the closest functional equivalent. It maintains identical voltage and current ratings (20V, 0.4VA) with all matching critical parameters. The 5.61mm actuator length represents a 0.28mm increase from the original specification and remains compatible with standard through-hole panel cutouts. This part carries ROHS3 compliance and offers extended electrical life (80,000 cycles versus 30,000 cycles), providing enhanced durability. Both parts are active products with established supply availability.

For Enhanced Performance Applications:

The 200MSP1T2B4M2QE from E-Switch provides superior electrical ratings (3A, 120V AC / 28V DC) within the identical mechanical envelope (5.33mm actuator length). This part is suitable for applications where the original 20V / 0.4VA specification represents a design margin and higher switching capacity is beneficial. The part maintains ROHS3 compliance and active product status. Selection of this substitute requires confirmation that the application circuit can accommodate the higher voltage and current ratings without adverse effects.

Compliance and Certification:

All three parts are ROHS3 compliant and carry EAR99 ECCN classification. The 34CMSP12B2M2RT and 200MSP1T2B4M2QE are REACH Unaffected. The 1825219-3 carries Vendor Undefined REACH status. All parts feature epoxy sealed terminals and unlimited moisture sensitivity rating (MSL 1).

Frequently Asked Questions (FAQ)

Q: Can the 1825219-3 be used as a direct drop-in replacement for the 34CMSP12B2M2RT?

A: Yes. The 1825219-3 maintains identical SPDT circuit configuration, On-On switch function, 0.4VA current rating, and 20V voltage rating. The 0.28mm difference in actuator length (5.61mm versus 5.33mm) does not affect through-hole panel mounting compatibility. Both parts use PC pin termination and operate across the same temperature range (-30°C to 85°C).

Q: What is the primary difference between the 1825219-3 and the 34CMSP12B2M2RT?

A: The 1825219-3 offers extended electrical life (80,000 cycles versus 30,000 cycles) and uses nickel-plated brass actuator material instead of chrome-plated brass. Electrical performance and mechanical form factor remain equivalent.

Q: When should the 200MSP1T2B4M2QE be selected instead of the 34CMSP12B2M2RT?

A: The 200MSP1T2B4M2QE should be selected when the application requires higher switching capacity. This part supports 3A current and 120V AC / 28V DC voltage ratings while maintaining the identical 5.33mm actuator length and through-hole mounting configuration. Selection requires confirmation that the application circuit design accommodates these higher electrical ratings.

Q: Are all three parts ROHS3 compliant?

A: Yes. The 34CMSP12B2M2RT, 1825219-3, and 200MSP1T2B4M2QE are all ROHS3 compliant. All three parts carry EAR99 ECCN classification and feature epoxy sealed terminals with unlimited moisture sensitivity rating.

Q: What is the impact of the 0.28mm actuator length difference between the 34CMSP12B2M2RT and 1825219-3?

A: The actuator length difference (5.33mm versus 5.61mm) is within standard mechanical tolerance for through-hole toggle switch panel mounting. Both parts use unthreaded bushings and PC pin termination, ensuring compatibility with standard panel cutout dimensions and PCB layouts.

Q: Can the 200MSP1T2B4M2QE be used in applications designed for 20V / 0.4VA operation?

A: Yes. The 200MSP1T2B4M2QE is rated for 120V AC / 28V DC and 3A current, which exceeds the 20V / 0.4VA requirement. The part operates safely at lower voltage and current levels. Confirmation that the application circuit design does not introduce incompatibilities is required before implementation.

Q: What inventory levels are available for each part?

A: Current inventory levels are 1153 pcs for 34CMSP12B2M2RT (Grayhill), 1398 pcs for 1825219-3 (TE Connectivity), and 2149 pcs for 200MSP1T2B4M2QE (E-Switch), all listed as new original stock in bulk packaging.