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Grayhill 34ASP11B1M1RT Toggle Switch SPDT Equivalent & Substitute Parts
Part Overview
The Grayhill 34ASP11B1M1RT is an SPDT (Single Pole Double Throw) toggle switch rated for 0.4VA at 20V AC/DC with panel mount configuration. This component is classified as Active product status with full RoHS3 compliance and REACH unaffected designation. Substitute parts are identified when equivalent electrical ratings, mechanical interfaces, and circuit configurations are required for design flexibility, supply chain optimization, or inventory management across multiple manufacturers including E-Switch and C&K.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | 34ASP11B1M1RT |
| Manufacturer | Grayhill Inc. |
| Series | 34A |
| Circuit Configuration | SPDT |
| Switch Function | On-On |
| Current Rating | 0.4VA (AC/DC) |
| Voltage Rating - AC | 20 V |
| Voltage Rating - DC | 20 V |
| Mounting Type | Panel Mount |
| Panel Cutout Dimensions | Circular - 6.35mm Dia |
| Bushing Thread | 1/4-40 |
| Actuator Type | Standard Round |
| Actuator Length | 10.41mm |
| Termination Style | Solder Lug |
| Operating Temperature Range | -30°C ~ 85°C |
| Electrical Life | 40,000 Cycles |
| RoHS Status | ROHS3 Compliant |
| Product Status | Active |
Substitute Part Grouping Explanation
Substitute parts are organized into two functional categories based on electrical rating compatibility with the main part 34ASP11B1M1RT:
Category 1: Direct Electrical Equivalents (0.4VA @ 20V)
The E-Switch part 100SP1T1B1M1REH maintains identical electrical specifications (0.4VA at 20V AC/DC) with matching mechanical interfaces (6.35mm panel cutout, 1/4-40 bushing thread, 10.41mm actuator length). This part is a direct functional substitute with equivalent electrical life (40,000 cycles) and operating temperature range (-30°C ~ 85°C).
Category 2: Higher-Rated Alternatives (5A @ 120V AC / 28V DC)
Five substitute parts from E-Switch and C&K manufacturers provide elevated electrical ratings (5A at 120V AC / 28V DC). These parts share identical mechanical mounting interfaces (6.35mm panel cutout, 1/4-40 bushing thread, solder lug termination) and SPDT On-On circuit configuration. These alternatives are suitable for applications requiring higher current capacity while maintaining panel mount compatibility.
Key Parameters Determining Substitution:
- Circuit configuration: SPDT On-On
- Mounting type: Panel Mount
- Panel cutout dimensions: Circular 6.35mm Dia
- Bushing thread: 1/4-40
- Termination style: Solder Lug
- Operating temperature: -30°C ~ 85°C
- RoHS3 compliance requirement
Parameter Comparison
| Part Number | Manufacturer | Current Rating | Voltage AC | Voltage DC | Actuator Length (mm) | Actuator Type | Electrical Life (Cycles) | Packaging | Inventory (Pcs) |
|---|---|---|---|---|---|---|---|---|---|
| 34ASP11B1M1RT | Grayhill Inc. | 0.4VA | 20V | 20V | 10.41 | Standard Round | 40,000 | Bulk | 1031 |
| 100SP1T1B1M1REH | E-Switch | 0.4VA | 20V | 20V | 10.41 | Standard Round | 40,000 | Bulk | 3000 |
| 100SP1T1B3M1QEH | E-Switch | 5A | 120V | 28V | 10.41 | Standard Round | 40,000 | Bulk | 1092 |
| 100SP1T3B1M1QEH | E-Switch | 5A | 120V | 28V | 13.97 | Standard Round | 40,000 | Bulk | 1086 |
| 7101P3DZQE | C&K | 5A | 120V | 28V | 13.21 | Flat Anti-Rotation | 100,000 | Tray | 1048 |
| 7101P3YZQE22 | C&K | 5A | 120V | 28V | 11.43 | Flat Anti-Rotation | 100,000 | Tray | 974 |
| 7101SPYZQE | C&K | 5A | 120V | 28V | 10.67 | Anti-Rotation | 100,000 | Tray | 1151 |
| 7101SYZGE | C&K | 5A | 120V | 28V | 10.67 | Standard Round | 100,000 | Bulk | 1318 |
Engineering Selection Recommendations
For Direct Replacement (Identical Electrical Specifications):
The E-Switch 100SP1T1B1M1REH is the primary substitute for the Grayhill 34ASP11B1M1RT. Both parts maintain 0.4VA at 20V AC/DC ratings with matching mechanical interfaces and 40,000 cycle electrical life. Both are RoHS3 compliant and MSL 1 rated. The E-Switch part offers higher inventory availability (3000 pcs vs. 1031 pcs) and includes epoxy sealed terminals as an additional feature.
For Higher Current Applications:
When circuit requirements exceed 0.4VA, the E-Switch 100SP1T1B3M1QEH and 100SP1T3B1M1QEH provide 5A capacity at 120V AC with identical panel mount interfaces. These parts maintain 40,000 cycle electrical life and RoHS3 compliance. Actuator length selection (10.41mm or 13.97mm) depends on panel depth requirements.
For Extended Electrical Life Requirements:
C&K parts (7101P3DZQE, 7101P3YZQE22, 7101SPYZQE, 7101SYZGE) provide 100,000 cycle electrical life with 5A at 120V AC ratings. These parts maintain identical panel cutout and bushing thread specifications. C&K parts are REACH Affected (compared to REACH Unaffected for Grayhill and E-Switch). Packaging is supplied in Tray format rather than Bulk.
Compliance Considerations:
All substitute parts maintain RoHS3 compliance and MSL 1 (Unlimited) moisture sensitivity rating. REACH status differs: Grayhill and E-Switch parts are REACH Unaffected, while C&K parts are REACH Affected. Selection should account for end-use application REACH requirements.
Frequently Asked Questions (FAQ)
Q: Can the E-Switch 100SP1T1B1M1REH directly replace the Grayhill 34ASP11B1M1RT without circuit modification?
A: Yes. Both parts share identical electrical specifications (0.4VA at 20V AC/DC), SPDT On-On circuit configuration, and mechanical mounting interfaces (6.35mm panel cutout, 1/4-40 bushing thread, solder lug termination). No circuit modification is required.
Q: What is the difference between the E-Switch 100SP1T1B3M1QEH and 100SP1T3B1M1QEH?
A: Both parts provide 5A at 120V AC/DC ratings with identical electrical specifications. The primary difference is actuator length: 100SP1T1B3M1QEH has 10.41mm length, while 100SP1T3B1M1QEH has 13.97mm length. Selection depends on available panel depth.
Q: Why do C&K parts have higher electrical life (100,000 cycles vs. 40,000 cycles)?
A: C&K 7000 series parts are engineered with enhanced contact materials and mechanisms that extend operational life. This specification difference is provided by the manufacturer and does not affect mechanical compatibility with the original Grayhill part.
Q: Are C&K parts suitable for REACH-restricted applications?
A: C&K parts are designated as REACH Affected. Applications requiring REACH Unaffected components should use Grayhill 34ASP11B1M1RT or E-Switch equivalents (100SP1T1B1M1REH, 100SP1T1B3M1QEH, 100SP1T3B1M1QEH).
Q: What is the difference between Bulk and Tray packaging?
A: Bulk packaging is loose component format suitable for high-volume assembly operations. Tray packaging provides organized component presentation in trays, typically preferred for automated pick-and-place equipment. Both formats contain the same electrical and mechanical specifications.
Q: Can a 5A rated part (E-Switch or C&K) be used in a 0.4VA circuit?
A: Yes. Higher-rated parts are backward compatible with lower-voltage and lower-current applications. The 5A parts will function correctly in 0.4VA circuits. However, this represents component over-specification and may not be cost-optimal.
Q: What actuator type differences exist between substitute parts?
A: Grayhill and most E-Switch parts use Standard Round actuators. C&K parts use either Anti-Rotation or Flat Anti-Rotation actuators, which provide rotational constraint to prevent unintended actuation. Actuator type does not affect electrical compatibility but may affect mechanical feel and panel integration.
Q: Are all substitute parts suitable for -30°C to 85°C operating temperature range?
A: Yes. All listed substitute parts maintain the -30°C to 85°C operating temperature specification, matching the original Grayhill part.
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