PVT322S Solid State Relay - Equivalent & Substitute Parts

Part Overview

The PVT322S 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-SMD surface mount package. This component is rated for 170 mA load current at 0–250 V AC/DC output with a 1.2 VDC input trigger voltage. The PVT322S is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production support.

Substiute Parts

PVT322S

Infineon TechnologiesIn Stock: 1447PVT322S Datasheet

Current PartRFQ

PVT322SPBF

Infineon TechnologiesIn Stock: 1161PVT322SPBF Datasheet

DirectRFQ

AQW217A

Panasonic Electric WorksIn Stock: 2041AQW217A Datasheet

MFR RecommendedRFQ

AQW282S

Panasonic Electric WorksIn Stock: 1784AQW282S Datasheet

MFR RecommendedRFQ

ASSR-1228-302E

Broadcom LimitedIn Stock: 1254ASSR-1228-302E Datasheet

MFR RecommendedRFQ

LH1522AAC

Vishay Semiconductor Opto DivisionIn Stock: 1316LH1522AAC Datasheet

MFR RecommendedRFQ

LH1522AACTR

Vishay Semiconductor Opto DivisionIn Stock: 3349LH1522AACTR Datasheet

MFR RecommendedRFQ

TLP209D(F)

Toshiba Semiconductor and StorageIn Stock: 853TLP209D(F) Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PVT322S is determined by the following critical parameters:

• Circuit Configuration: All substitutes must maintain SPST-NO (1 Form A) x 2 dual-channel architecture
• Package / Case: Primary substitutes use 8-SMD (0.300", 7.62mm) with Gull Wing termination to ensure PCB compatibility
• Input Voltage: Acceptable range is 1.14–1.3 VDC (PVT322S operates at 1.2 VDC)
• Load Voltage Rating: Minimum 200 V for direct substitution; lower ratings (60 V) require application-specific evaluation
• Load Current: Minimum 160 mA for direct substitution; higher ratings provide design margin
• On-State Resistance: Maximum 15 Ohms acceptable; lower values reduce power dissipation
• Mounting Type: Surface Mount required for PCB assembly compatibility
• Product Status: Active status preferred for long-term availability

Substitutes are grouped into two categories: direct replacements (matching or exceeding all electrical parameters within the same package) and application-specific alternatives (different voltage or current ratings requiring design review).

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Recommended for Immediate Substitution)

PVT322SPBF is the primary direct replacement for PVT322S. It maintains identical electrical specifications (1.2 VDC input, 0–250 V load voltage, 170 mA current, 10 Ohms on-state resistance) and package configuration (8-SMD 0.300" 7.62mm). PVT322SPBF is active in production and ROHS3 compliant, addressing the obsolescence and compliance limitations of the original part.

High-Voltage Substitutes (200 V Load Rating)

AQW217A (Panasonic) and LH1522AAC/LH1522AACTR (Vishay) are suitable for applications requiring 0–200 V load voltage. Both maintain the 8-SMD (0.300", 7.62mm) package footprint and Gull Wing termination. AQW217A provides 160 mA current capacity with 15 Ohms on-state resistance. LH1522AAC and LH1522AACTR provide 120 mA current capacity with 10 Ohms on-state resistance; LH1522AACTR is supplied in Tape & Reel packaging for automated assembly. All three are active products with ROHS3 compliance.

Low-Voltage Substitutes (60 V Load Rating)

AQW282S (Panasonic) and ASSR-1228-302E (Broadcom) are suitable only for applications with maximum load voltage of 60 V. AQW282S uses an 8-SOP (0.173", 4.40mm) package, requiring PCB layout modification. ASSR-1228-302E maintains the 8-SMD (0.300", 7.62mm) package. Both provide higher current capacity (350 mA and 200 mA respectively) and lower on-state resistance (2.5 Ohms and 10 Ohms respectively). Both are active products with RoHS compliance.

Limited-Current Substitute (50 mA)

TLP209D(F) (Toshiba) is suitable only for applications with maximum load current of 50 mA. It maintains 0–200 V load voltage rating and 8-SMD package configuration but exhibits 50 Ohms on-state resistance, significantly higher than the original part. This substitute is appropriate only when current requirements are substantially lower than the PVT322S specification.

Frequently Asked Questions (FAQ)

Q: Can PVT322SPBF be used as a direct drop-in replacement for PVT322S?

A: Yes. PVT322SPBF is electrically and mechanically identical to PVT322S, with the same input voltage (1.2 VDC), load voltage range (0–250 V), current rating (170 mA), on-state resistance (10 Ohms), and 8-SMD (0.300", 7.62mm) package. The primary differences are active product status and ROHS3 compliance.

Q: Which substitutes maintain the same package footprint as PVT322S?

A: PVT322SPBF, AQW217A, ASSR-1228-302E, LH1522AAC, LH1522AACTR, and TLP209D(F) all use 8-SMD packages with Gull Wing termination compatible with the original 0.300" (7.62mm) footprint. AQW282S uses an 8-SOP (0.173", 4.40mm) package, requiring PCB layout modification.

Q: What is the difference between LH1522AAC and LH1522AACTR?

A: Both parts are electrically identical with 1.26 VDC input, 0–200 V load voltage, 120 mA current, and 10 Ohms on-state resistance. LH1522AAC is supplied in Tube packaging; LH1522AACTR is supplied in Tape & Reel (TR) packaging for automated pick-and-place assembly.

Q: Can AQW282S or ASSR-1228-302E be used in applications requiring 250 V load voltage?

A: No. Both parts are rated for maximum 60 V load voltage. Using them in 250 V applications exceeds their voltage rating and will result in component failure.

Q: What is the impact of on-state resistance differences between substitutes?

A: On-state resistance directly affects power dissipation and heat generation. Lower resistance values (2.5 Ohms for AQW282S) reduce power loss; higher values (50 Ohms for TLP209D(F)) increase power dissipation. Selection depends on thermal design and power budget requirements.

Q: Are all substitute parts RoHS compliant?

A: PVT322S is RoHS non-compliant. All listed substitutes are RoHS compliant (either RoHS or ROHS3), meeting current environmental regulations.

Q: Which substitute provides the best long-term availability?

A: PVT322SPBF is the recommended choice for long-term availability, as it is the active production variant of the original Infineon PVT322 series. All other substitutes are from established manufacturers with active product status.