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Grayhill 34ASP13B1M1RT Toggle Switch SPDT Equivalent & Substitute Parts
Part Overview
The Grayhill 34ASP13B1M1RT is an SPDT (Single Pole Double Throw) toggle switch rated for 0.4VA at 20V AC/DC, designed for panel mount applications. This non-illuminated switch features a standard round actuator with solder lug termination and operates across a temperature range of -30°C to 85°C. The part is currently active in production with ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1).
Equivalent and substitute parts are identified to provide design flexibility when the primary part is unavailable, when inventory constraints exist, or when application requirements permit operation within alternative electrical ratings while maintaining mechanical compatibility.
Substiute Parts
Key Parameters
| Parameter | Value | Substitution Relevance |
|---|---|---|
| Circuit Configuration | SPDT | Critical - must match for functional equivalence |
| Mounting Type | Panel Mount | Critical - determines physical installation compatibility |
| Panel Cutout Dimensions | Circular - 6.35mm Dia | Critical - mechanical fit requirement |
| Bushing Thread | 1/4-40 | Critical - panel mounting interface |
| Termination Style | Solder Lug | Critical - electrical connection method |
| Actuator Type | Standard Round | Important - user interface consistency |
| Current Rating | 0.4VA (AC/DC) | Application-dependent - determines load capacity |
| Voltage Rating - AC | 20V | Application-dependent - determines voltage compatibility |
| Voltage Rating - DC | 20V | Application-dependent - determines voltage compatibility |
| Operating Temperature Range | -30°C ~ 85°C | Application-dependent - environmental compatibility |
| RoHS Status | ROHS3 Compliant | Regulatory - compliance requirement |
Substitute Part Grouping Explanation
Substitution eligibility for the Grayhill 34ASP13B1M1RT is determined by strict alignment with the following critical parameters:
Mechanical Compatibility Requirements (Non-Negotiable):
- Circuit configuration must be SPDT
- Mounting type must be Panel Mount
- Panel cutout dimensions must be Circular 6.35mm Dia
- Bushing thread must be 1/4-40
- Termination style must be Solder Lug
- Actuator type must be Standard Round
Electrical Compatibility Parameters (Application-Dependent):
- Current rating must equal or exceed application requirements
- Voltage ratings (AC and DC) must equal or exceed application requirements
- Operating temperature range must encompass application environment
Regulatory Compliance:
- RoHS3 compliance status must be maintained
The substitute part C&K 7101SYZQE meets all mechanical compatibility requirements and exceeds electrical ratings. This part is suitable for applications where higher current capacity (5A versus 0.4VA) and higher AC voltage rating (120V versus 20V) are acceptable or beneficial. The DC voltage rating of 28V also exceeds the original 20V specification.
Parameter Comparison
| Parameter | Grayhill 34ASP13B1M1RT | C&K 7101SYZQE | Match Status |
|---|---|---|---|
| Manufacturer | Grayhill Inc. | C&K | Different Manufacturer |
| Circuit Configuration | SPDT | SPDT | Match |
| Switch Function | On-On | On-On | Match |
| Mounting Type | Panel Mount | Panel Mount | Match |
| Panel Cutout Dimensions | Circular - 6.35mm Dia | Circular - 6.35mm Dia | Match |
| Bushing Thread | 1/4-40 | 1/4-40 | Match |
| Termination Style | Solder Lug | Solder Lug | Match |
| Actuator Type | Standard Round | Standard Round | Match |
| Actuator Length | 13.97mm | 10.67mm | Different - C&K is shorter |
| Current Rating | 0.4VA (AC/DC) | 5A (AC/DC) | C&K exceeds specification |
| Voltage Rating - AC | 20V | 120V | C&K exceeds specification |
| Voltage Rating - DC | 20V | 28V | C&K exceeds specification |
| Operating Temperature Range | -30°C ~ 85°C | -30°C ~ 85°C | Match |
| Illumination | Non-Illuminated | Non-Illuminated | Match |
| Actuator Material | Brass, Chrome Plated | Brass, Chrome Plated | Match |
| Electrical Life | 40,000 Cycles | 100,000 Cycles | C&K exceeds specification |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Match |
| MSL Rating | 1 (Unlimited) | 1 (Unlimited) | Match |
Engineering Selection Recommendations
Primary Part Selection (Grayhill 34ASP13B1M1RT): Select the original Grayhill 34ASP13B1M1RT when the application requires exact electrical specifications of 0.4VA at 20V AC/DC and when the longer actuator length of 13.97mm is functionally required. This part maintains active production status and full ROHS3 compliance.
Substitute Part Selection (C&K 7101SYZQE): The C&K 7101SYZQE toggle switch is electrically and mechanically compatible for substitution when:
- The application operates at or below 5A current (exceeding the 0.4VA requirement)
- The application operates at or below 120V AC or 28V DC (exceeding the 20V requirement)
- The shorter actuator length of 10.67mm (versus 13.97mm) is acceptable for the panel interface
- Extended electrical life of 100,000 cycles (versus 40,000 cycles) is beneficial
- Epoxy sealed terminals provide additional environmental protection
Both parts maintain ROHS3 compliance and identical operating temperature ranges (-30°C to 85°C), ensuring regulatory and environmental compatibility.
Frequently Asked Questions (FAQ)
Q: Can the C&K 7101SYZQE directly replace the Grayhill 34ASP13B1M1RT in all applications?
A: Mechanical and electrical compatibility is confirmed for panel mount SPDT switching applications. The C&K part provides equal or superior electrical ratings. The actuator length difference (10.67mm versus 13.97mm) must be verified against panel design specifications to ensure proper user interface clearance and feel.
Q: What is the primary difference between these two toggle switches?
A: The Grayhill 34ASP13B1M1RT is rated for 0.4VA at 20V with 40,000 electrical cycles. The C&K 7101SYZQE is rated for 5A at 120V AC (28V DC) with 100,000 electrical cycles. Both share identical mechanical interfaces (panel cutout, bushing thread, termination style) and actuator type.
Q: Are there any compliance or certification differences?
A: Both parts are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity). The C&K part is REACH Affected, while the Grayhill part is REACH Unaffected. Applications subject to REACH regulations must verify compliance requirements before substitution.
Q: What does "On-On" switch function mean?
A: On-On indicates that both switch positions are active (neither position is neutral or off). In SPDT configuration, toggling between positions switches the connection from one terminal to another without an intermediate off state.
Q: Can I use the C&K 7101SYZQE in a 5V application?
A: Yes. The C&K 7101SYZQE is rated for 28V DC and 120V AC, which exceeds 5V requirements. The part is suitable for low-voltage applications.
Q: What is the significance of the panel cutout dimension being 6.35mm?
A: The 6.35mm circular panel cutout dimension is the mechanical hole size required in the panel for switch installation. Both the Grayhill and C&K parts share this specification, ensuring identical panel drilling requirements.
Q: Does the difference in actuator length affect functionality?
A: Actuator length affects the physical reach and user interface feel at the panel surface. The C&K part's 10.67mm actuator is 3.3mm shorter than the Grayhill part's 13.97mm actuator. Panel design and user interface requirements must be evaluated to determine acceptability.
Q: What is electrical life measured in cycles?
A: Electrical life represents the number of on-off switching cycles the switch can perform while maintaining specified electrical performance. The C&K 7101SYZQE (100,000 cycles) provides 2.5 times the cycle life of the Grayhill 34ASP13B1M1RT (40,000 cycles), indicating greater durability for high-cycle applications.
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