PVT422 Solid State Relay SPST-NO Equivalent & Substitute Parts

Part Overview

The PVT422 is a solid state relay (SSR) manufactured by Infineon Technologies, configured as a SPST-NO (Single Pole Single Throw - Normally Open) relay with dual channels in an 8-DIP package. The device is rated for 120 mA load current at 0–400 V output voltage with 1.2 VDC input control voltage and 35 Ohms maximum on-state resistance.

The PVT422 is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs, repairs, and system upgrades. Substitute parts must maintain electrical compatibility across input voltage, load voltage rating, load current capacity, and package form factor.

Key Parameters

Parameter	PVT422 Specification
Manufacturer	Infineon Technologies
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-DIP (0.300", 7.62mm)
Mounting Type	Through Hole
Termination Style	PC Pin

Substitute Part Grouping Explanation

Substitution eligibility for the PVT422 is determined by the following critical parameters:

Circuit Configuration: Must be SPST-NO (1 Form A) x 2 to maintain functional equivalence
Load Voltage Rating: Must support 0–400 V minimum to ensure full voltage compatibility
Load Current: Must support 120 mA or greater to handle the specified load
Input Voltage: Must be compatible with 1.2 VDC control signal (tolerance range 1.14–1.2 VDC acceptable)
Package / Case: Must be 8-DIP (0.300", 7.62mm) for PCB footprint compatibility
Mounting Type: Must be Through Hole to match assembly requirements
Termination Style: Must be PC Pin for solder connection compatibility

Substitute parts are grouped into two categories:

Direct Equivalents (identical electrical and mechanical specifications):

PVT422PBF (Infineon Technologies) — Active product status, RoHS3 compliant
AQW254 (Panasonic Electric Works) — 400 V load rating, 16 Ohms on-state resistance

Compatible Substitutes (meet all critical parameters with acceptable variations):

AQW210 / AQW210EH (Panasonic Electric Works) — 350 V load rating, lower on-state resistance
LAA100 (IXYS Integrated Circuits Division) — 350 V load rating, 25 Ohms on-state resistance
AQW214EH (Panasonic Electric Works) — 100 mA load current (reduced from 120 mA), 35 Ohms on-state resistance

Not Recommended for Direct Substitution:

XAA170 (IXYS) — 100 mA load current (below 120 mA requirement)
AQW214 / AQW214E (Panasonic) — 100 mA load current (below 120 mA requirement)
AQW614EH (Panasonic) — SPST-NO + SPST-NC configuration (Form A and B, not Form A only)

Parameter Comparison

Part Number	Manufacturer	Circuit	Input Voltage	Load Voltage	Load Current	On-State Resistance (Max)	Package	Product Status	RoHS Status
PVT422	Infineon Technologies	SPST-NO x 2	1.2 VDC	0–400 V	120 mA	35 Ohms	8-DIP	Obsolete	RoHS Non-Compliant
PVT422PBF	Infineon Technologies	SPST-NO x 2	1.2 VDC	0–400 V	120 mA	35 Ohms	8-DIP	Active	RoHS3 Compliant
AQW254	Panasonic Electric Works	SPST-NO x 2	1.14 VDC	0–400 V	120 mA	16 Ohms	8-DIP	Active	RoHS3 Compliant
AQW210EH	Panasonic Electric Works	SPST-NO x 2	1.14 VDC	0–350 V	120 mA	25 Ohms	8-DIP	Active	RoHS3 Compliant
AQW210	Panasonic Electric Works	SPST-NO x 2	1.14 VDC	0–350 V	120 mA	35 Ohms	8-DIP	Active	RoHS3 Compliant
LAA100	IXYS Integrated Circuits Division	SPST-NO x 2	1.2 VDC	0–350 V	120 mA	25 Ohms	8-DIP	Active	RoHS3 Compliant
XAA170	IXYS Integrated Circuits Division	SPST-NO x 2	1.2 VDC	0–350 V	100 mA	50 Ohms	8-DIP	Active	RoHS3 Compliant
AQW214EH	Panasonic Electric Works	SPST-NO x 2	1.14 VDC	0–400 V	100 mA	35 Ohms	8-DIP	Active	RoHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: PVT422PBF

PVT422PBF is the direct equivalent manufactured by Infineon Technologies. It maintains identical electrical specifications (1.2 VDC input, 0–400 V load voltage, 120 mA load current, 35 Ohms on-state resistance) and package form factor. The part is in active production status with RoHS3 compliance, making it the preferred choice for new designs and production continuity.

Secondary Recommendation: AQW254

AQW254 (Panasonic Electric Works) meets all critical electrical parameters: SPST-NO x 2 configuration, 1.14 VDC input voltage (compatible with 1.2 VDC control signal), 0–400 V load voltage rating, and 120 mA load current. The on-state resistance is 16 Ohms (lower than PVT422's 35 Ohms), which reduces power dissipation and heat generation. The part is active and RoHS3 compliant.

Tertiary Recommendation: AQW210EH

AQW210EH (Panasonic Electric Works) is suitable for applications where load voltage does not exceed 350 V. It provides 120 mA load current capacity with 25 Ohms on-state resistance (improved performance over PVT422). Input voltage compatibility is maintained at 1.14 VDC. The part is active and RoHS3 compliant.

Alternative Recommendation: LAA100

LAA100 (IXYS Integrated Circuits Division) supports 120 mA load current with 1.2 VDC input voltage matching. Load voltage is limited to 350 V. On-state resistance is 25 Ohms. The part is active and RoHS3 compliant.

Not Recommended

AQW214EH, XAA170, AQW214, and AQW214E have reduced load current ratings (100 mA vs. 120 mA required), making them unsuitable for applications requiring full 120 mA capacity. AQW614EH has a different circuit configuration (SPST-NO + SPST-NC) and is not functionally equivalent.

Frequently Asked Questions (FAQ)

Q: Can PVT422PBF be used as a direct replacement for PVT422?

A: Yes. PVT422PBF is manufactured by Infineon Technologies and maintains identical electrical and mechanical specifications. The primary difference is product status (active vs. obsolete) and RoHS compliance (RoHS3 vs. non-compliant). PVT422PBF is the recommended direct replacement.

Q: What is the difference between AQW254 and AQW210EH?

A: Both are Panasonic PhotoMOS™ relays in 8-DIP packages with SPST-NO x 2 configuration and 120 mA load current. The key difference is load voltage rating: AQW254 supports 0–400 V, while AQW210EH supports 0–350 V. AQW254 is suitable for applications requiring the full 400 V load voltage range. AQW254 has 16 Ohms on-state resistance; AQW210EH has 25 Ohms.

Q: Can XAA170 replace PVT422?

A: No. XAA170 has a reduced load current rating of 100 mA, below the PVT422 requirement of 120 mA. It is not suitable for applications requiring full 120 mA capacity.

Q: Are all substitute parts RoHS compliant?

A: All recommended substitute parts (PVT422PBF, AQW254, AQW210EH, AQW210, LAA100) are RoHS3 compliant. The original PVT422 is RoHS non-compliant.

Q: What is the input voltage tolerance for substitute parts?

A: PVT422 and LAA100 require 1.2 VDC input. Panasonic PhotoMOS™ parts (AQW series) and IXYS LAA100 accept 1.14 VDC input. Both voltage levels are compatible within standard control circuit tolerances.

Q: Can AQW614EH be used instead of PVT422?

A: No. AQW614EH has a different circuit configuration (SPST-NO + SPST-NC, or Form A and B) compared to PVT422 (SPST-NO x 2, or Form A only). The functional difference makes it unsuitable for direct substitution.

Q: What is the impact of lower on-state resistance in substitute parts?

A: Lower on-state resistance (e.g., 16 Ohms in AQW254 vs. 35 Ohms in PVT422) reduces power dissipation and heat generation during operation. This is a performance improvement and does not negatively affect compatibility.

Q: Are all substitute parts available in the same 8-DIP package?

A: Yes. All recommended substitute parts use the 8-DIP (0.300", 7.62mm) package with PC Pin termination, ensuring PCB footprint and assembly compatibility with PVT422.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message