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Infineon PVT422S Solid State Relay SPST-NO 120MA 0-400V Equivalent & Substitute Parts
Part Overview
The Infineon PVT422S is a surface mount solid state relay (SSR) with SPST-NO (1 Form A) configuration, rated for 120 mA load current and 0–400 V output voltage range. This component operates with 1.2 VDC input and features a maximum on-state resistance of 35 Ohms in an 8-SMD (0.300", 7.62mm) package with gull wing termination.
The PVT422S is classified as obsolete. Identifying functionally equivalent alternatives is necessary to support ongoing production requirements, design updates, and supply chain continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer Part Number | PVT422S |
| Manufacturer | Infineon Technologies |
| Series | PVT, HEXFET® |
| Circuit Configuration | SPST-NO (1 Form A) x 2 |
| Output Type | AC, DC |
| Voltage - Input | 1.2 VDC |
| Voltage - Load | 0 V ~ 400 V |
| Load Current | 120 mA |
| On-State Resistance (Max) | 35 Ohms |
| Package / Case | 8-SMD (0.300", 7.62mm) |
| Termination Style | Gull Wing |
| Mounting Type | Surface Mount |
| Product Status | Obsolete |
| RoHS Status | RoHS non-compliant |
| Moisture Sensitivity Level (MSL) | 4 (72 Hours) |
Substitute Part Grouping Explanation
Substitution eligibility for the PVT422S is determined by the following critical parameters:
- Circuit Configuration: SPST-NO (1 Form A) x 2 (mandatory match)
- Output Voltage Range: 0 V ~ 400 V (minimum requirement; higher ratings acceptable)
- Load Current: 120 mA (minimum requirement; equal or higher ratings acceptable)
- Input Voltage: 1.2 VDC nominal (tolerance range acceptable)
- On-State Resistance: 35 Ohms maximum (lower values acceptable)
- Package / Case: 8-SMD (0.300", 7.62mm) or compatible footprint
- Termination Style: Gull Wing (mandatory for surface mount compatibility)
- Mounting Type: Surface Mount (mandatory)
Substitute parts are grouped into two categories:
Category 1: Direct Packaging Equivalent
- PVT422SPBF (Infineon Technologies) – Identical electrical specifications with active product status and RoHS3 compliance
Category 2: Functional Equivalents with Parameter Variations
- Panasonic PhotoMOS™ AQW series parts (AQW210AX, AQW210EHA, AQW210EHAX, AQW210S, AQW214A, AQW214AZ, AQW214EAZ, AQW214EHA, AQW214SX) – Meet or exceed electrical requirements with active product status and RoHS3 compliance, with variations in load current, on-state resistance, and package options
Parameter Comparison
| Part Number | Manufacturer | Circuit Config | Input Voltage | Load Voltage | Load Current | On-State Resistance (Max) | Package / Case | Product Status | RoHS Status |
|---|---|---|---|---|---|---|---|---|---|
| PVT422S | Infineon Technologies | SPST-NO (1 Form A) x 2 | 1.2 VDC | 0–400 V | 120 mA | 35 Ohms | 8-SMD (0.300", 7.62mm) | Obsolete | RoHS non-compliant |
| PVT422SPBF | Infineon Technologies | SPST-NO (1 Form A) x 2 | 1.2 VDC | 0–400 V | 120 mA | 35 Ohms | 8-SMD (0.300", 7.62mm) | Active | ROHS3 Compliant |
| AQW210AX | Panasonic Electric Works | SPST-NO (1 Form A) x 2 | 1.14 VDC | 0–350 V | 120 mA | 35 Ohms | 8-SMD (0.300", 7.62mm) | Active | ROHS3 Compliant |
| AQW210EHA | Panasonic Electric Works | SPST-NO (1 Form A) x 2 | 1.14 VDC | 0–350 V | 120 mA | 25 Ohms | 8-SMD (0.300", 7.62mm) | Active | ROHS3 Compliant |
| AQW210EHAX | Panasonic Electric Works | SPST-NO (1 Form A) x 2 | 1.14 VDC | 0–350 V | 120 mA | 25 Ohms | 8-SMD (0.300", 7.62mm) | Active | ROHS3 Compliant |
| AQW210S | Panasonic Electric Works | SPST-NO (1 Form A) x 2 | 1.14 VDC | 0–350 V | 100 mA | 35 Ohms | 8-SOP (0.173", 4.40mm Width) | Active | ROHS3 Compliant |
| AQW214A | Panasonic Electric Works | SPST-NO (1 Form A) x 2 | 1.14 VDC | 0–400 V | 100 mA | 50 Ohms | 8-SMD (0.300", 7.62mm) | Active | ROHS3 Compliant |
| AQW214AZ | Panasonic Electric Works | SPST-NO (1 Form A) x 2 | 1.14 VDC | 0–400 V | 100 mA | 50 Ohms | 8-SMD (0.300", 7.62mm) | Active | ROHS3 Compliant |
| AQW214EAZ | Panasonic Electric Works | SPST-NO (1 Form A) x 2 | 1.14 VDC | 0–400 V | 100 mA | 50 Ohms | 8-SMD (0.300", 7.62mm) | Active | RoHS Compliant |
| AQW214EHA | Panasonic Electric Works | SPST-NO (1 Form A) x 2 | 1.14 VDC | 0–400 V | 100 mA | 35 Ohms | 8-SMD (0.300", 7.62mm) | Active | ROHS3 Compliant |
| AQW214SX | Panasonic Electric Works | SPST-NO (1 Form A) x 2 | 1.14 VDC | 0–400 V | 80 mA | 50 Ohms | 8-SOP (0.173", 4.40mm Width) | Active | ROHS3 Compliant |
Engineering Selection Recommendations
Primary Recommendation: PVT422SPBF
The PVT422SPBF is the direct equivalent to the PVT422S, offering identical electrical and mechanical specifications. This part carries active product status and ROHS3 compliance, eliminating obsolescence risk and meeting modern regulatory requirements. The PVT422SPBF is the preferred choice for direct replacement in existing designs.
Secondary Recommendations: Panasonic PhotoMOS™ AQW Series
The Panasonic AQW series provides functional alternatives with active product status and ROHS3 compliance. Selection within this series depends on specific application requirements:
-
AQW210EHA / AQW210EHAX: Recommended for applications requiring lower on-state resistance (25 Ohms vs. 35 Ohms) with 120 mA load current capability and 0–350 V output voltage range. These parts are suitable where the reduced voltage rating does not constrain the application.
-
AQW214EHA: Recommended for applications where 100 mA load current is sufficient and 0–400 V output voltage range is required. This part offers 35 Ohms on-state resistance, matching the original specification.
-
AQW214A / AQW214AZ: Suitable for 100 mA load current applications with 0–400 V output voltage range and 50 Ohms on-state resistance. These parts are available in active product status with ROHS3 compliance.
Compliance Considerations
All recommended substitutes carry ROHS3 compliance or equivalent RoHS certification, addressing regulatory requirements that the obsolete PVT422S does not meet. The PVT422SPBF maintains identical specifications while providing compliance and active product status.
Frequently Asked Questions (FAQ)
Q: Can the PVT422SPBF be used as a direct replacement for the PVT422S?
A: Yes. The PVT422SPBF is electrically and mechanically identical to the PVT422S, with identical circuit configuration, voltage ratings, load current, on-state resistance, and package specifications. The primary differences are active product status and ROHS3 compliance.
Q: What is the key difference between the Infineon PVT422SPBF and Panasonic AQW series substitutes?
A: The PVT422SPBF maintains 100% specification alignment with the original PVT422S. Panasonic AQW series parts offer functional equivalence with variations in load voltage range (0–350 V vs. 0–400 V for some models), load current (80–120 mA depending on model), and on-state resistance (25–50 Ohms depending on model). All maintain SPST-NO (1 Form A) x 2 circuit configuration and 8-SMD or 8-SOP surface mount packages.
Q: Are there package compatibility considerations when selecting substitutes?
A: Yes. The original PVT422S uses an 8-SMD (0.300", 7.62mm) package with gull wing termination. Most recommended substitutes maintain this package specification. However, AQW210S and AQW214SX use an 8-SOP (0.173", 4.40mm Width) package, which has a different footprint and is not directly compatible with PVT422S PCB layouts. Select 8-SMD variants (AQW210AX, AQW210EHA, AQW210EHAX, AQW214A, AQW214AZ, AQW214EAZ, AQW214EHA) for direct PCB compatibility.
Q: What load current rating should I select?
A: The original PVT422S is rated for 120 mA. For direct replacement, select parts with 120 mA or higher load current rating. AQW210 series parts (AQW210AX, AQW210EHA, AQW210EHAX) provide 120 mA rating. AQW214 series parts provide 100 mA or 80 mA ratings and are suitable only if your application load current does not exceed these limits.
Q: What is the significance of on-state resistance variation?
A: On-state resistance affects power dissipation and voltage drop across the relay. The original PVT422S specifies 35 Ohms maximum. Substitutes with lower on-state resistance (25 Ohms for AQW210EHA / AQW210EHAX) reduce power dissipation. Substitutes with higher on-state resistance (50 Ohms for AQW214A, AQW214AZ, AQW214EAZ, AQW214SX) increase power dissipation. Select based on thermal design and voltage drop requirements.
Q: Does the reduced output voltage range of AQW210 series (0–350 V vs. 0–400 V) affect compatibility?
A: The AQW210 series is rated for 0–350 V output voltage, while the original PVT422S and AQW214 series are rated for 0–400 V. Use AQW210 series only if your application load voltage does not exceed 350 V. For applications requiring full 0–400 V capability, select PVT422SPBF or AQW214 series alternatives.
Q: What is the input voltage tolerance for these parts?
A: The original PVT422S specifies 1.2 VDC input. Panasonic AQW series parts specify 1.14 VDC input. Both values are within typical control circuit tolerances. Verify that your control circuit voltage falls within the specified input voltage range of the selected substitute.
Q: Are all recommended substitutes RoHS compliant?
A: Yes. All recommended substitutes carry ROHS3 compliance or equivalent RoHS certification. The original PVT422S is RoHS non-compliant. Selecting any recommended substitute addresses RoHS compliance requirements for new designs or production updates.
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