PVT442 Solid State Relay - Equivalent & Substitute Parts

Part Overview

The PVT442 is a solid state relay (SSR) manufactured by Infineon Technologies, configured as a SPST-NC (Single Pole Single Throw, Normally Closed) relay in a 6-DIP through-hole package. This component operates with a 1.2VDC input signal and handles AC/DC loads up to 400V at 170mA maximum current. The PVT442 is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and production continuity.

Substiute Parts

PVT442

Infineon TechnologiesIn Stock: 3454PVT442 Datasheet

Current PartRFQ

PLA110

IXYS Integrated Circuits DivisionIn Stock: 2139PLA110 Datasheet

MFR RecommendedRFQ

PLA140

IXYS Integrated Circuits DivisionIn Stock: 2582PLA140 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PVT442 requires matching on the following critical parameters: 6-DIP through-hole package format, 1.2VDC input voltage, 0-400V load voltage range, AC/DC output capability, and PC pin termination. The PVT442 operates as a SPST-NC (normally closed) configuration with 170mA load current capacity and 16 Ohms maximum on-state resistance.

The identified substitute parts (PLA110 and PLA140) share the same package, input voltage, load voltage range, output type, and termination style. However, both substitutes operate as SPST-NO (normally open) configurations rather than SPST-NC. This represents a functional circuit inversion that requires design-level evaluation. The PLA110 provides 150mA capacity at 22 Ohms resistance, while the PLA140 provides 250mA capacity at 8 Ohms resistance, both exceeding or matching the PVT442's electrical performance envelope.

Parameter Comparison

Engineering Selection Recommendations

Both PLA110 and PLA140 are active production components with ROHS3 compliance, providing regulatory advantage over the obsolete, non-compliant PVT442. The primary substitution consideration is the circuit configuration difference: the PVT442 is SPST-NC (normally closed), while both alternatives are SPST-NO (normally open). This functional inversion requires circuit redesign to maintain equivalent system behavior.

For applications requiring the lowest on-state resistance and highest current capacity, the PLA140 (250mA, 8 Ohms) is the superior choice. For applications with tighter current requirements near 150mA, the PLA110 (150mA, 22 Ohms) provides adequate performance. Both parts maintain the same package footprint, input voltage, and load voltage specifications as the original PVT442, enabling direct PCB compatibility with appropriate signal logic inversion.

Frequently Asked Questions (FAQ)

Q: Can PLA110 or PLA140 be used as direct drop-in replacements for PVT442?

A: Physical package compatibility exists (6-DIP through-hole), but functional compatibility requires circuit modification. The PVT442 operates as normally closed (SPST-NC), while PLA110 and PLA140 operate as normally open (SPST-NO). Logic inversion at the control signal level is necessary.

Q: What is the difference between PLA110 and PLA140?

A: Both are SPST-NO OptoMOS® relays with identical package, input voltage, and load voltage specifications. PLA110 provides 150mA maximum load current with 22 Ohms on-state resistance. PLA140 provides 250mA maximum load current with 8 Ohms on-state resistance. Selection depends on application current requirements and acceptable voltage drop.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both PLA110 and PLA140 are ROHS3 compliant, whereas the PVT442 is RoHS non-compliant. This provides regulatory advantage for new designs and updated production runs.

Q: Do the substitute parts have the same pinout as PVT442?

A: All three parts use 6-DIP (0.300", 7.62mm) through-hole packages with PC pin termination. Pinout compatibility must be verified against specific datasheet diagrams, as SPST-NC and SPST-NO configurations may have different pin assignments despite identical package dimensions.

Q: What is the moisture sensitivity level for these components?

A: All three parts (PVT442, PLA110, PLA140) have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.