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Equivalent & Substitute Parts for 34ASP47T7M1RT Toggle Switch
Part Overview
The 34ASP47T7M1RT is a panel-mount toggle switch manufactured by Grayhill Inc., featuring SPDT (Single Pole Double Throw) circuitry with momentary-off-momentary switching function. This component operates at 0.4VA across 20V AC/DC ratings with a non-illuminated brass chrome-plated actuator. The part maintains active product status with 1136 units in current inventory and demonstrates full RoHS compliance with unlimited moisture sensitivity rating.
Substitute components become necessary when application requirements exceed the electrical specifications of the primary part, when supply chain constraints limit availability, or when design modifications require enhanced environmental protection or increased switching capacity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Grayhill Inc. |
| Part Number | 34ASP47T7M1RT |
| Series | 34A |
| Circuit Configuration | SPDT |
| Switch Function | Mom-Off-Mom |
| Current Rating | 0.4VA (AC/DC) |
| Voltage Rating - AC | 20V |
| Voltage Rating - DC | 20V |
| Mounting Type | Panel Mount |
| Actuator Type | Standard Round |
| Actuator Length | 12.37mm |
| Termination Style | Solder Lug |
| Panel Cutout Diameter | 11.91mm Circular |
| Bushing Thread | 15/32-32 |
| Operating Temperature Range | -30°C to 85°C |
| Electrical Life | 40,000 Cycles |
| RoHS Status | RoHS Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitution eligibility for the 34ASP47T7M1RT is determined by strict adherence to the following critical parameters:
Mandatory Compatibility Parameters:
- Circuit configuration must remain SPDT
- Switch function must remain Mom-Off-Mom
- Mounting type must remain Panel Mount
- Termination style must remain Solder Lug
- Panel cutout dimensions must remain Circular 11.91mm Dia
- Bushing thread must remain 15/32-32
- Operating temperature range must encompass -30°C to 85°C minimum
- Electrical life must meet or exceed 40,000 cycles
Allowable Variation Parameters:
- Current rating may exceed 0.4VA
- Voltage ratings (AC/DC) may exceed 20V
- Actuator length may vary
- Ingress protection may be enhanced
- Terminal features may be enhanced (epoxy sealing)
The three C&K substitute parts (7105T1ZQE, 7105TCWZQE, 7105TZQE) from the 7000 series satisfy all mandatory compatibility parameters while providing enhanced electrical capacity (5A at 120V AC / 28V DC) and improved terminal protection through epoxy sealing. These substitutes maintain identical mechanical interfaces and switching characteristics while supporting higher power applications.
Parameter Comparison
| Parameter | 34ASP47T7M1RT (Grayhill) | 7105T1ZQE (C&K) | 7105TCWZQE (C&K) | 7105TZQE (C&K) |
|---|---|---|---|---|
| Circuit Configuration | SPDT | SPDT | SPDT | SPDT |
| Switch Function | Mom-Off-Mom | Mom-Off-Mom | Mom-Off-Mom | Mom-Off-Mom |
| Mounting Type | Panel Mount | Panel Mount | Panel Mount | Panel Mount |
| Current Rating | 0.4VA (AC/DC) | 5A (AC/DC) | 5A (AC/DC) | 5A (AC/DC) |
| Voltage Rating - AC | 20V | 120V | 120V | 120V |
| Voltage Rating - DC | 20V | 28V | 28V | 28V |
| Actuator Type | Standard Round | Standard Round | Standard Round | Standard Round |
| Actuator Length | 12.37mm | 12.37mm | 17.45mm | 17.45mm |
| Termination Style | Solder Lug | Solder Lug | Solder Lug | Solder Lug |
| Panel Cutout Dimensions | Circular - 11.91mm Dia | Circular - 11.91mm Dia | Circular - 11.91mm Dia | Circular - 11.91mm Dia |
| Bushing Thread | 15/32-32 | 15/32-32 | 15/32-32 | 15/32-32 |
| Operating Temperature | -30°C to 85°C | -30°C to 85°C | -30°C to 85°C | -30°C to 85°C |
| Electrical Life | 40,000 Cycles | 40,000 Cycles | 40,000 Cycles | 40,000 Cycles |
| Actuator Material | Brass, Chrome Plated | Brass, Chrome Plated | Brass, Chrome Plated | Brass, Chrome Plated |
| Ingress Protection | Not specified | Not specified | IP67 - Dust Tight, Waterproof | Not specified |
| Terminal Features | Standard | Epoxy Sealed Terminals | Epoxy Sealed Terminals | Epoxy Sealed Terminals |
| RoHS Status | RoHS Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Product Status | Active | Active | Active | Active |
Engineering Selection Recommendations
Primary Part Selection (34ASP47T7M1RT): Select the Grayhill 34ASP47T7M1RT when application requirements specify maximum voltage and current ratings of 20V and 0.4VA respectively. This part maintains RoHS compliance and demonstrates active product status with established supply availability (1136 units in stock). The standard actuator length of 12.37mm accommodates panel depths requiring minimal protrusion.
Substitute Selection Criteria:
7105T1ZQE (C&K): Select this substitute when application requirements demand increased electrical capacity (5A at 120V AC / 28V DC) while maintaining the original 12.37mm actuator length. This part provides identical mechanical interface compatibility with enhanced terminal protection through epoxy sealing. ROHS3 compliance and active product status support long-term availability (1169 units in stock).
7105TCWZQE (C&K): Select this substitute when application requirements demand increased electrical capacity combined with enhanced environmental protection (IP67 rating). The extended 17.45mm actuator length accommodates deeper panel installations. Epoxy sealed terminals provide superior moisture resistance. ROHS3 compliance and active product status ensure supply continuity (3914 units in stock).
7105TZQE (C&K): Select this substitute when application requirements demand increased electrical capacity with extended actuator length (17.45mm) for deeper panel mounting. This part provides epoxy sealed terminals without IP67 environmental rating. ROHS3 compliance and active product status support availability (1292 units in stock).
All substitute parts maintain identical SPDT circuitry, Mom-Off-Mom switching function, solder lug termination, and 40,000-cycle electrical life specifications. Mechanical interface compatibility (11.91mm panel cutout, 15/32-32 bushing thread) remains constant across all options.
Frequently Asked Questions (FAQ)
Q: Can the 7105T1ZQE substitute directly replace the 34ASP47T7M1RT in existing designs?
A: Direct mechanical and electrical substitution is possible. The 7105T1ZQE maintains identical panel cutout dimensions (11.91mm circular), bushing thread (15/32-32), actuator length (12.37mm), and switching characteristics (SPDT, Mom-Off-Mom). The higher electrical ratings (5A at 120V AC / 28V DC) are backward compatible with applications rated for 0.4VA at 20V. Solder lug termination remains unchanged.
Q: What is the difference between 7105T1ZQE, 7105TCWZQE, and 7105TZQE?
A: The primary differences are actuator length and environmental protection. The 7105T1ZQE features a 12.37mm actuator matching the original part. The 7105TCWZQE and 7105TZQE both feature extended 17.45mm actuators for deeper panel installations. The 7105TCWZQE additionally provides IP67 ingress protection (dust tight, waterproof), making it suitable for harsh environmental applications. All three maintain identical electrical specifications and SPDT switching function.
Q: Are all substitute parts RoHS compliant?
A: Yes. The original 34ASP47T7M1RT is RoHS Compliant. All three C&K substitutes (7105T1ZQE, 7105TCWZQE, 7105TZQE) are ROHS3 Compliant, meeting current regulatory requirements.
Q: What does "epoxy sealed terminals" mean on the C&K parts?
A: Epoxy sealed terminals provide enhanced protection of the solder lug connections against moisture ingress and environmental contamination. This feature improves long-term reliability in applications exposed to humidity or condensation, while maintaining standard solder lug termination compatibility.
Q: Can I use a substitute part with higher voltage and current ratings in a low-power application?
A: Yes. The C&K substitute parts with higher electrical ratings (5A at 120V AC / 28V DC) are fully backward compatible with applications requiring only 0.4VA at 20V. The higher ratings represent increased capacity, not increased minimum operating requirements. All mechanical and switching characteristics remain identical.
Q: Which substitute should I select for outdoor or high-humidity applications?
A: The 7105TCWZQE is recommended for outdoor or high-humidity applications due to its IP67 ingress protection rating (dust tight, waterproof). This part combines epoxy sealed terminals with formal environmental sealing, providing maximum protection against moisture and particulate contamination.
Q: Do the substitute parts maintain the same electrical life specification?
A: Yes. All substitute parts (7105T1ZQE, 7105TCWZQE, 7105TZQE) maintain the 40,000-cycle electrical life specification identical to the original 34ASP47T7M1RT.
Q: What packaging is available for substitute parts?
A: All C&K substitute parts are supplied in bulk packaging. The original Grayhill part is supplied with standard packaging. Confirm packaging requirements with your procurement specifications.
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