Equivalent & Substitute Parts for 34CMSP11B1M2RT

Part Overview

The 34CMSP11B1M2RT 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 epoxy-sealed PC pin termination and operates across -30°C to 85°C. The part is Active status and ROHS3 compliant, with 936 units currently in stock.

Substitute parts are identified when equivalent electrical ratings, mechanical dimensions, and termination styles align with the main part specifications, enabling direct functional replacement in circuit applications.

Substiute Parts

34CMSP11B1M2RT

Grayhill Inc.In Stock: 98734CMSP11B1M2RT Datasheet

Current PartRFQ

200MSP4T1B1M2REH

E-SwitchIn Stock: 1058200MSP4T1B1M2REH Datasheet

SimilarRFQ

T101SHCQE

C&KIn Stock: 4087T101SHCQE Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 34CMSP11B1M2RT is determined by alignment across the following critical parameters:

Electrical Compatibility Requirements:

• Circuit configuration must be SPDT
• Current rating must support 0.4VA minimum (AC/DC)
• Voltage rating must support minimum 20V AC and 20V DC

Mechanical Compatibility Requirements:

• Mounting type must be Panel Mount
• Actuator type must be Standard Round
• Actuator length must be 9.40mm
• Termination style must be PC Pin
• Panel cutout dimensions must be Circular - 4.95mm Dia
• Bushing thread must be 10-48

Environmental & Compliance Requirements:

• Operating temperature range must encompass -30°C ~ 85°C
• RoHS3 compliance required

Parts meeting all electrical, mechanical, and environmental criteria are classified as direct substitutes. Parts exceeding these specifications (higher current, voltage, or cycle life) are functionally compatible but represent over-specification for the application.

Parameter Comparison

Engineering Selection Recommendations

200MSP4T1B1M2REH (E-Switch): This part matches all electrical and mechanical specifications of the 34CMSP11B1M2RT. Both parts are rated 0.4VA at 20V AC/DC, feature identical panel cutout dimensions, actuator geometry, and termination style. Both are ROHS3 compliant and REACH unaffected. The primary functional difference is switch function: the E-Switch part operates Mom-Off-Mom versus the Grayhill On-On configuration. This difference affects circuit behavior and must be evaluated against application requirements. Electrical life is equivalent at 30,000 cycles. This part is suitable for direct substitution where Mom-Off-Mom operation is acceptable.

T101SHCQE (C&K): This part exceeds the electrical specifications of the 34CMSP11B1M2RT, with current rating of 3A and AC voltage rating of 120V versus 0.4VA and 20V respectively. Mechanical dimensions, actuator geometry, and termination style are identical. Operating temperature range and panel mount configuration align. Electrical life is superior at 60,000 cycles. Both parts are ROHS3 compliant. The C&K part is REACH affected, whereas the Grayhill part is REACH unaffected. This part is functionally compatible for applications requiring higher electrical capacity but introduces over-specification and potential regulatory considerations for REACH-sensitive applications.

Frequently Asked Questions (FAQ)

Q: Can the 200MSP4T1B1M2REH replace the 34CMSP11B1M2RT in all applications?

A: The 200MSP4T1B1M2REH is mechanically and electrically compatible with identical current and voltage ratings. However, the switch function differs: the E-Switch part operates Mom-Off-Mom while the Grayhill operates On-On. Substitution is valid only when the circuit design accommodates Mom-Off-Mom operation.

Q: What is the significance of the switch function difference between On-On and Mom-Off-Mom?

A: On-On switches maintain their position after actuation, with two stable states. Mom-Off-Mom switches return to center (off) position when released, with momentary contact at each extreme. Circuit behavior and user interaction differ fundamentally between these configurations.

Q: Is the T101SHCQE a suitable substitute despite higher electrical ratings?

A: The T101SHCQE is functionally compatible for applications where the 34CMSP11B1M2RT operates below its maximum ratings. The higher current (3A) and voltage (120V AC) capacity do not degrade performance in lower-power circuits. However, the REACH affected status requires evaluation against regulatory requirements for the target application.

Q: Are all three parts panel-mount compatible with the same cutout dimensions?

A: Yes. All three parts feature identical circular panel cutout dimensions of 4.95mm diameter and 10-48 bushing thread, enabling mechanical interchangeability in panel installations.

Q: What is the impact of electrical life differences on part selection?

A: The 34CMSP11B1M2RT and 200MSP4T1B1M2REH both specify 30,000 cycles electrical life. The T101SHCQE specifies 60,000 cycles. For applications requiring extended cycle life, the C&K part provides superior durability. For standard applications within 30,000 cycle limits, all parts are equivalent.

Q: How do RoHS and REACH compliance affect substitution decisions?

A: The 34CMSP11B1M2RT and 200MSP4T1B1M2REH are both ROHS3 compliant and REACH unaffected. The T101SHCQE is ROHS3 compliant but REACH affected. Applications subject to REACH regulations must use either the Grayhill or E-Switch parts. Applications without REACH constraints can use any of the three parts.

Q: Can these parts be used interchangeably in existing PCB designs?

A: All three parts use PC pin termination and identical panel cutout dimensions. Mechanical installation is interchangeable. Electrical substitution depends on circuit design compatibility with the specific switch function (On-On versus Mom-Off-Mom) and electrical ratings required by the application.