PVT312S-T Solid State Relay SPST-NO Equivalent & Substitute Parts

Part Overview

The PVT312S-T is a surface mount solid state relay (SSR) manufactured by Infineon Technologies, designed for SPST-NO (Single Pole Single Throw - Normally Open) switching applications. This component operates with a 1.2VDC input and supports AC/DC loads up to 250V at 190mA. The PVT312S-T is classified as obsolete, making equivalent and substitute parts necessary for new designs and ongoing production requirements. Active alternatives with comparable electrical and mechanical specifications are available from multiple manufacturers including Panasonic Electric Works, Broadcom Limited, and IXYS Integrated Circuits Division.

Substiute Parts

PVT312S-T

Infineon TechnologiesIn Stock: 25121PVT312S-T Datasheet

Current PartRFQ

PVT312S-TPBF

Infineon TechnologiesIn Stock: 1250PVT312S-TPBF Datasheet

DirectRFQ

AQV253HA

Panasonic Electric WorksIn Stock: 1593AQV253HA Datasheet

MFR RecommendedRFQ

AQV253HAZ

Panasonic Electric WorksIn Stock: 3182AQV253HAZ Datasheet

MFR RecommendedRFQ

ASSR-3211-501E

Broadcom LimitedIn Stock: 1035ASSR-3211-501E Datasheet

MFR RecommendedRFQ

CPC1510GS

IXYS Integrated Circuits DivisionIn Stock: 1278CPC1510GS Datasheet

MFR RecommendedRFQ

CPC1510GSTR

IXYS Integrated Circuits DivisionIn Stock: 1486CPC1510GSTR Datasheet

MFR RecommendedRFQ

LCA120LS

IXYS Integrated Circuits DivisionIn Stock: 2172LCA120LS Datasheet

MFR RecommendedRFQ

LCA120LSTR

IXYS Integrated Circuits DivisionIn Stock: 1725LCA120LSTR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PVT312S-T is determined by the following critical parameters:

Mandatory Compatibility Parameters:

• Circuit Configuration: SPST-NO (1 Form A)
• Output Type: AC, DC
• Load Voltage Range: 0V ~ 250V
• Package / Case: 6-SMD (0.300", 7.62mm)
• Termination Style: Gull Wing
• Mounting Type: Surface Mount

Functional Performance Parameters:

• Input Voltage: 1.2VDC (acceptable range: 1.14VDC to 1.37VDC)
• Load Current: 190mA minimum (acceptable: 150mA to 200mA)
• On-State Resistance: 10 Ohms maximum (acceptable: up to 20 Ohms)

Substitute parts must meet all mandatory compatibility parameters. Functional performance parameters allow for minor variations within the specified ranges, provided the substitute part meets or exceeds the original part's electrical requirements for the intended application.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (Identical Electrical Specifications): PVT312S-TPBF is the direct active equivalent from Infineon Technologies. It maintains identical input voltage (1.2VDC), load current (190mA), and on-state resistance (10 Ohms) specifications. The primary difference is product status (Active vs. Obsolete) and RoHS compliance (ROHS3 Compliant). Packaging is available in Tape & Reel format for production environments.

Primary Alternatives (Enhanced Performance): AQV253HA and AQV253HAZ (Panasonic Electric Works, PhotoMOS™ AQV series) offer improved electrical characteristics with lower input voltage requirement (1.14VDC), higher load current capability (200mA), and lower on-state resistance (8 Ohms). Both variants are Active products with ROHS3 compliance. AQV253HAZ provides Tape & Reel packaging for automated assembly.

CPC1510GS and CPC1510GSTR (IXYS Integrated Circuits Division, OptoMOS® series) are Active alternatives with 200mA load current capability. These parts operate at higher input voltage (1.37VDC) and higher on-state resistance (15 Ohms) compared to the original specification. CPC1510GSTR provides Cut Tape & Digi-Reel® packaging.

Current-Limited Applications: LCA120LS and LCA120LSTR (IXYS Integrated Circuits Division, OptoMOS® series) are suitable for applications where 150mA load current is sufficient. These parts maintain the original 1.2VDC input voltage specification and provide ROHS3 compliance. Higher on-state resistance (20 Ohms) must be evaluated for thermal performance in the target application.

Compliance Considerations: All recommended active alternatives meet ROHS3 compliance requirements. The original PVT312S-T is RoHS non-compliant; migration to compliant alternatives is necessary for new designs and regulatory adherence.

Frequently Asked Questions (FAQ)

Q: Can PVT312S-TPBF be used as a direct replacement for PVT312S-T? A: Yes. PVT312S-TPBF maintains identical electrical specifications (1.2VDC input, 190mA load current, 10 Ohms on-state resistance) and mechanical compatibility (6-SMD package, Gull Wing termination). The primary differences are product status (Active) and RoHS compliance (ROHS3 Compliant). Packaging format differs (Tape & Reel vs. Tube).

Q: What are the key differences between Panasonic AQV253HA and the original PVT312S-T? A: AQV253HA provides improved performance with lower input voltage requirement (1.14VDC vs. 1.2VDC), higher load current capability (200mA vs. 190mA), and lower on-state resistance (8 Ohms vs. 10 Ohms). All other parameters including load voltage range (0V ~ 250V), package type (6-SMD), and termination style (Gull Wing) remain compatible. AQV253HA is an Active product with ROHS3 compliance.

Q: Are IXYS CPC1510 series parts suitable replacements? A: CPC1510GS and CPC1510GSTR are mechanically and functionally compatible alternatives. They maintain the 6-SMD package and Gull Wing termination. However, they operate at higher input voltage (1.37VDC) and higher on-state resistance (15 Ohms) while providing 200mA load current. These characteristics must be evaluated against specific application requirements, particularly for input signal compatibility and thermal performance.

Q: When should LCA120LS be considered instead of higher current alternatives? A: LCA120LS is appropriate for applications where the load current requirement does not exceed 150mA. This part maintains the original 1.2VDC input voltage specification and provides ROHS3 compliance. The higher on-state resistance (20 Ohms) requires thermal evaluation. Use of this part in 190mA applications is not recommended.

Q: What packaging options are available for production environments? A: Tape & Reel (TR) packaging is available for automated assembly: PVT312S-TPBF (Infineon), AQV253HAZ (Panasonic), CPC1510GSTR (IXYS), and LCA120LSTR (IXYS). Cut Tape (CT) & Digi-Reel® packaging is available for CPC1510GSTR. Tube packaging is available for manual assembly or lower-volume applications.

Q: Are all substitute parts RoHS compliant? A: All recommended active substitute parts meet ROHS3 compliance requirements. The original PVT312S-T is RoHS non-compliant. ASSR-3211-501E, while ROHS3 compliant, is classified as Obsolete and is not recommended for new designs.

Q: What is the moisture sensitivity level (MSL) for substitute parts? A: Panasonic AQV253HA and AQV253HAZ have MSL Not Applicable. IXYS CPC1510GS, CPC1510GSTR, LCA120LS, and LCA120LSTR have MSL 1 (Unlimited). The original PVT312S-T has MSL 4 (72 Hours). Lower MSL ratings provide greater handling flexibility in manufacturing environments.