Equivalent & Substitute Parts for 34CMSP43B2M7RT

Part Overview

The 34CMSP43B2M7RT is a toggle switch manufactured by Grayhill Inc., classified as an SPDT (Single Pole Double Throw) momentary-off-momentary switch rated for 0.4VA at 20V. This through-hole, right-angle vertical mounted component features a standard round actuator with epoxy sealed terminals and is designed for applications requiring reliable switching with 30,000 electrical cycles. The part is currently active in production and ROHS3 compliant. Identifying equivalent substitute parts is necessary to ensure supply chain continuity, optimize procurement options, and maintain design flexibility across manufacturing environments.

Key Parameters

Parameter	Value
Circuit Configuration	SPDT
Switch Function	Mom-Off-Mom
Current Rating	0.4VA (AC/DC)
Voltage Rating - AC	20V
Voltage Rating - DC	20V
Mounting Type	Through Hole, Right Angle, Vertical
Actuator Type	Standard Round
Actuator Length	7.37mm
Termination Style	PC Pin
Operating Temperature Range	-30°C to 85°C
Electrical Life	30,000 Cycles
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the 34CMSP43B2M7RT is determined by strict equivalence across the following critical parameters:

Electrical Equivalence: Circuit configuration (SPDT), switch function (Mom-Off-Mom), current rating (0.4VA AC/DC), and voltage ratings (20V AC and DC) must be identical.

Mechanical Equivalence: Mounting type (through hole, right angle, vertical orientation), actuator type (standard round), actuator length (7.37mm), and termination style (PC pin) must match exactly.

Environmental Equivalence: Operating temperature range (-30°C to 85°C) and electrical life (30,000 cycles) must be maintained.

Compliance Equivalence: RoHS3 compliance status is required for substitution in regulated applications.

The substitute part T105LH9AVBE from C&K meets all these criteria and is therefore classified as a direct equivalent.

Parameter Comparison

Parameter	34CMSP43B2M7RT (Grayhill)	T105LH9AVBE (C&K)	Match Status
Circuit Configuration	SPDT	SPDT	Equivalent
Switch Function	Mom-Off-Mom	Mom-Off-Mom	Equivalent
Current Rating (AC/DC)	0.4VA	0.4VA	Equivalent
Voltage Rating - AC	20V	20V	Equivalent
Voltage Rating - DC	20V	20V	Equivalent
Mounting Type	Through Hole, Right Angle, Vertical	Through Hole, Right Angle, Vertical	Equivalent
Actuator Type	Standard Round	Standard Round	Equivalent
Actuator Length	7.37mm	7.37mm	Equivalent
Termination Style	PC Pin	PC Pin	Equivalent
Operating Temperature	-30°C to 85°C	-30°C to 85°C	Equivalent
Electrical Life	30,000 Cycles	30,000 Cycles	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Actuator Material	Brass, Chrome Plated	Brass, Chrome Plated	Equivalent
Features	Epoxy Sealed Terminals	Epoxy Sealed Terminals	Equivalent
Packaging	Bulk	Tray	Different
REACH Status	REACH Unaffected	REACH Affected	Different

Engineering Selection Recommendations

The T105LH9AVBE from C&K is a direct functional and mechanical equivalent to the 34CMSP43B2M7RT. Both components are active products with ROHS3 compliance, ensuring regulatory alignment for current manufacturing standards.

Selection Considerations:

Packaging differs between the two parts: the 34CMSP43B2M7RT is supplied in bulk format, while the T105LH9AVBE is supplied in tray format. This distinction affects inventory management and handling procedures but does not impact electrical or mechanical performance.

REACH status differs: the 34CMSP43B2M7RT is REACH unaffected, while the T105LH9AVBE is REACH affected. Applications subject to REACH regulations must account for this distinction during compliance documentation and supply chain qualification.

Both parts share identical electrical ratings, mechanical dimensions, operating temperature ranges, and electrical life specifications, confirming their interchangeability in circuit design and PCB layout applications.

Frequently Asked Questions (FAQ)

Q: Can T105LH9AVBE replace 34CMSP43B2M7RT in existing designs?

A: Yes. Both components are electrically and mechanically equivalent across all critical parameters: SPDT circuit, 0.4VA at 20V rating, through-hole right-angle vertical mounting, 7.37mm standard round actuator, PC pin termination, -30°C to 85°C operating range, and 30,000 electrical cycle life. PCB layout and schematic connections require no modification.

Q: What is the difference in packaging between these parts?

A: The 34CMSP43B2M7RT is supplied in bulk packaging, while the T105LH9AVBE is supplied in tray packaging. Bulk packaging typically offers cost advantages for high-volume orders, while tray packaging provides improved component protection and handling efficiency. Packaging selection depends on production volume and handling infrastructure.

Q: Are there REACH compliance implications when substituting?

A: Yes. The 34CMSP43B2M7RT is REACH unaffected, while the T105LH9AVBE is REACH affected. Applications subject to REACH regulations must verify that the substitute part meets all applicable substance restrictions and documentation requirements. Compliance verification should be completed before design release.

Q: Do both parts have identical actuator specifications?

A: Yes. Both components feature a standard round actuator with 7.37mm length and brass chrome-plated material. Actuator feel, engagement force, and mechanical response are equivalent.

Q: What is the electrical life expectancy for both parts?

A: Both the 34CMSP43B2M7RT and T105LH9AVBE are rated for 30,000 electrical cycles, ensuring equivalent reliability and service life in momentary switching applications.

Q: Are both parts RoHS3 compliant?

A: Yes. Both components are ROHS3 compliant, meeting current environmental and hazardous substance restrictions for electronic components in regulated markets.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message