PVT312S Solid State Relay - Equivalent & Substitute Parts

Part Overview

The PVT312S is a solid state relay (SSR) manufactured by Infineon Technologies, configured as a SPST-NO (Single Pole Single Throw - Normally Open) switch with 190 mA load capacity and 0-250 V output voltage range. The device features a 1.2 VDC input trigger voltage and operates on both AC and DC loads with a maximum on-state resistance of 10 Ohms. The PVT312S is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity. Direct replacements and functionally compatible alternatives are available from active product lines.

Substiute Parts

PVT312S

Infineon TechnologiesIn Stock: 1536PVT312S Datasheet

Current PartRFQ

PVT312SPBF

Infineon TechnologiesIn Stock: 3106PVT312SPBF Datasheet

DirectRFQ

AQV217AX

Panasonic Electric WorksIn Stock: 4428AQV217AX Datasheet

MFR RecommendedRFQ

AQV217S

Panasonic Electric WorksIn Stock: 53761AQV217S Datasheet

MFR RecommendedRFQ

AQV217SZ

Panasonic Electric WorksIn Stock: 1465AQV217SZ Datasheet

MFR RecommendedRFQ

AQV253AX

Panasonic Electric WorksIn Stock: 1777AQV253AX Datasheet

MFR RecommendedRFQ

AQV253HAZ

Panasonic Electric WorksIn Stock: 3182AQV253HAZ Datasheet

MFR RecommendedRFQ

AQV453AX

Panasonic Electric WorksIn Stock: 3521AQV453AX Datasheet

MFR RecommendedRFQ

LH1511BAB

Vishay Semiconductor Opto DivisionIn Stock: 2694LH1511BAB Datasheet

MFR RecommendedRFQ

LH1511BABTR

Vishay Semiconductor Opto DivisionIn Stock: 2350LH1511BABTR Datasheet

MFR RecommendedRFQ

LH1512BAC

Vishay Semiconductor Opto DivisionIn Stock: 1246LH1512BAC Datasheet

MFR RecommendedRFQ

LH1512BACTR

Vishay Semiconductor Opto DivisionIn Stock: 2100LH1512BACTR Datasheet

MFR RecommendedRFQ

LH1518AABTR

Vishay Semiconductor Opto DivisionIn Stock: 23407LH1518AABTR Datasheet

MFR RecommendedRFQ

TLP176D(F)

Toshiba Semiconductor and StorageIn Stock: 9181TLP176D(F) Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PVT312S is determined by the following critical parameters:

Primary Substitution Criteria:

• Circuit configuration (SPST-NO required for direct replacement)
• Load voltage range (minimum 0-250 V)
• Load current capacity (minimum 190 mA)
• Input voltage compatibility (1.2 VDC nominal)
• Surface mount package with gull wing termination
• AC/DC output capability

Grouping Logic:

Group 1 - Direct Infineon Replacement: PVT312SPBF is the active production equivalent of PVT312S, maintaining identical electrical specifications and package footprint. This part differs only in product status (Active) and RoHS compliance level (ROHS3 vs. non-compliant).

Group 2 - Panasonic PhotoMOS™ SPST-NO Alternatives: AQV217AX, AQV217S, and AQV217SZ provide SPST-NO functionality with reduced load current (160-180 mA) and load voltage (0-200 V). These parts are suitable for applications with lower current or voltage requirements. AQV253AX and AQV253HAZ offer 200 mA load current and 0-250 V voltage range, matching or exceeding PVT312S electrical performance.

Group 3 - Vishay LH1511/LH1512 Alternatives: LH1511BAB and LH1511BABTR provide SPST-NC (Normally Closed) configuration, not SPST-NO. LH1512BAC combines both SPST-NO and SPST-NC in a single 8-SMD package. These Vishay parts are suitable only when circuit topology permits alternative switching logic.

Parameter Comparison

Engineering Selection Recommendations

Tier 1 - Recommended Direct Replacement:

PVT312SPBF is the primary substitute for PVT312S. This part maintains identical electrical specifications, package footprint, and gull wing termination. The transition from obsolete to active product status ensures long-term availability. ROHS3 compliance provides regulatory alignment for new designs and manufacturing environments.

Tier 2 - Panasonic PhotoMOS™ Alternatives:

AQV253AX and AQV253HAZ are suitable substitutes when load voltage and current requirements align with 0-250 V and 200 mA specifications. These parts offer improved on-state resistance (8 Ohms vs. 10 Ohms), reducing power dissipation. Both maintain the 6-SMD (0.300") package footprint. ROHS3 compliance is available with AQV253AX.

AQV217AX, AQV217S, and AQV217SZ are applicable only for applications with reduced load voltage (0-200 V maximum) and current (160-180 mA maximum). The AQV217S and AQV217SZ use a smaller 6-SOP (0.173") package, requiring PCB layout modification.

Tier 3 - Vishay Alternatives:

LH1511BAB and LH1511BABTR are SPST-NC (Normally Closed) configurations and are not direct functional replacements for the SPST-NO PVT312S. These parts are suitable only when circuit design permits normally-closed switching logic.

LH1512BAC combines SPST-NO and SPST-NC functionality in an 8-SMD package. This part is applicable for designs requiring dual-channel switching capability but requires PCB layout modification due to increased pin count.

Frequently Asked Questions (FAQ)

Q: Can PVT312SPBF be used as a direct replacement for PVT312S?

A: Yes. PVT312SPBF is the active production equivalent with identical electrical specifications (1.2 VDC input, 0-250 V load voltage, 190 mA load current, 10 Ohms on-state resistance) and package footprint (6-SMD, 0.300", gull wing termination). The only differences are product status (Active vs. Obsolete) and RoHS compliance level (ROHS3 vs. non-compliant).

Q: What are the key differences between Infineon PVT312SPBF and Panasonic AQV253AX?

A: Both parts maintain SPST-NO configuration, 0-250 V load voltage, and 6-SMD (0.300") package footprint. AQV253AX provides 200 mA load current (vs. 190 mA) and lower on-state resistance (8 Ohms vs. 10 Ohms). Input voltage is slightly lower (1.14 VDC vs. 1.2 VDC). AQV253AX is ROHS3 compliant. These differences are within acceptable substitution parameters for most applications.

Q: Can Panasonic AQV217 series parts replace PVT312S?

A: AQV217AX, AQV217S, and AQV217SZ are suitable only for applications with load voltage not exceeding 200 V and load current not exceeding 180 mA. The PVT312S is rated for 0-250 V and 190 mA. AQV217S and AQV217SZ use a smaller 6-SOP (0.173") package, requiring PCB layout modification. These parts are not recommended for designs requiring the full 250 V load voltage specification.

Q: Why are Vishay LH1511 and LH1512 parts listed as alternatives?

A: LH1511BAB and LH1511BABTR are SPST-NC (Normally Closed) configurations, not SPST-NO. These parts are functional alternatives only when circuit design permits normally-closed switching logic. LH1512BAC combines both SPST-NO and SPST-NC in a single package and requires PCB layout modification due to 8-SMD pin count.

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

A: On-state resistance directly affects power dissipation and voltage drop across the relay. PVT312S and PVT312SPBF specify 10 Ohms maximum. Panasonic AQV253 series parts specify 8 Ohms, reducing power dissipation by approximately 20% at rated current. AQV217 series parts specify 15 Ohms, increasing power dissipation by 50%. Selection depends on thermal design and power budget requirements.

Q: Are package footprint differences critical for substitution?

A: Yes. PVT312S uses 6-SMD (0.300", 7.62mm) with gull wing termination. PVT312SPBF and Panasonic AQV253 series maintain this footprint. AQV217S and AQV217SZ use 6-SOP (0.173", 4.40mm), requiring PCB layout modification. LH1512BAC uses 8-SMD (0.300"), increasing pin count. Package changes require design review and PCB rework.

Q: What RoHS compliance status should be selected for new designs?

A: ROHS3 compliance is recommended for new designs and manufacturing environments subject to RoHS regulations. PVT312SPBF, AQV253AX, AQV217S, AQV453AX, LH1511BAB, LH1511BABTR, and LH1512BAC all meet ROHS3 requirements. The original PVT312S is RoHS non-compliant and unsuitable for regulated applications.