PS7341-1A Solid State Relay SPST-NO — Equivalent & Substitute Parts

Part Overview

The PS7341-1A is a solid-state relay (SSR) with SPST-NO (Single Pole Single Throw - Normally Open) configuration, rated for 150 mA load current at 0–400 V AC/DC operation. Manufactured by CEL in a 6-DIP (0.300", 7.62mm) through-hole package, this part has reached obsolete status. Locating equivalent or substitute components is essential for design continuity, system maintenance, and component replenishment in existing applications.

Substiute Parts

PS7341-1A

CELIn Stock: 4704PS7341-1A Datasheet

Current PartRFQ

PLA110

IXYS Integrated Circuits DivisionIn Stock: 2139PLA110 Datasheet

DirectRFQ

AQV210EH

Panasonic Electric WorksIn Stock: 19226AQV210EH Datasheet

SimilarRFQ

AQV214EH

Panasonic Electric WorksIn Stock: 3045AQV214EH Datasheet

SimilarRFQ

AQV214H

Panasonic Electric WorksIn Stock: 1632AQV214H Datasheet

SimilarRFQ

AQW210EH

Panasonic Electric WorksIn Stock: 19047AQW210EH Datasheet

SimilarRFQ

AQW214EH

Panasonic Electric WorksIn Stock: 16484AQW214EH Datasheet

SimilarRFQ

AQY210EH

Panasonic Electric WorksIn Stock: 30207AQY210EH Datasheet

SimilarRFQ

AQY214EH

Panasonic Electric WorksIn Stock: 14771AQY214EH Datasheet

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AQY414EH

Panasonic Electric WorksIn Stock: 20208AQY414EH Datasheet

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ASSR-4111-001E

Broadcom LimitedIn Stock: 6001ASSR-4111-001E Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute components for the PS7341-1A are categorized based on compatibility with the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Circuit Configuration: SPST-NO (1 Form A)
• Package Type: 6-DIP (0.300", 7.62mm) through-hole
• Input Voltage: Nominal 1.2 VDC operation
• Load Voltage Range: 0 V ~ 400 V
• Load Current: 150 mA or higher
• Termination: PC Pin
• Output Type: AC/DC operation

Direct Substitutes (6-DIP SPST-NO): Components maintaining the same package footprint and circuit configuration include PLA110 (IXYS), AQV214EH, AQV214H, and ASSR-4111-001E (Panasonic/Broadcom). These parts satisfy all primary electrical and mechanical parameters within tolerance.

Compatible Alternative Packages: Components with equivalent electrical specifications but different package configurations (4-DIP, 8-DIP) are listed for reference. These include AQY214EH, AQY210EH (4-DIP), and AQW214EH, AQW210EH (8-DIP dual-channel). Package changes require PCB redesign.

Partial Electrical Compatibility: AQV210EH operates at reduced maximum load current (130 mA) and load voltage (350 V) compared to the original specification.

Parameter Comparison

Engineering Selection Recommendations

Best Direct Replacement for 6-DIP Footprint Applications:

PLA110 (IXYS) is the optimal substitute when PCB layout and through-hole spacing cannot be modified. It maintains identical electrical specifications (150 mA, 0–400 V), matches the 6-DIP package, and is actively manufactured with ROHS3 compliance.

For Active, Compliant Alternatives Accepting Reduced Load Current:

ASSR-4111-001E (Broadcom) and AQV214EH (Panasonic) offer full 400 V load voltage support with active product status and ROHS3 compliance. Load current is reduced to 120 mA, suitable for applications not exceeding this threshold.

For Designs Permitting PCB Redesign:

4-DIP alternatives (AQY214EH, AQY210EH) and 8-DIP dual-relay modules (AQW214EH, AQW210EH) provide additional flexibility for layout optimization. All are actively manufactured with full compliance certification.

Compliance Consideration:

The original PS7341-1A is RoHS non-compliant. All listed substitutes maintain ROHS3 compliance, supporting transition to modern manufacturing and supply chain standards.

Frequently Asked Questions (FAQ)

Q: What makes PLA110 a drop-in replacement for PS7341-1A? PLA110 maintains identical 6-DIP package footprint, matching load current (150 mA), and full 0–400 V load voltage range. Input voltage tolerance is also equivalent (1.2 VDC), permitting direct PCB substitution without design modification.

Q: Why do some substitutes specify lower load current ratings (120 mA vs. 150 mA)? SSR load current is determined by the internal semiconductor die size and thermal design. AQV214EH and ASSR-4111-001E have smaller current ratings, making them suitable only for applications where 120 mA load current is acceptable. Review application specifications before selection.

Q: Can I use an 8-DIP or 4-DIP part as a replacement? 8-DIP and 4-DIP alternatives (AQW/AQY series) have different physical package dimensions and PCB pinout. These require PCB redesign and cannot function as plug-in replacements. Use these only when PCB layout modification is feasible.

Q: What is the significance of AQV210EH specifying 0–350 V load voltage instead of 0–400 V? Load voltage rating defines the maximum safe voltage the relay can switch. AQV210EH is rated for 350 V maximum; operation above this rating is not supported. Select this part only if your application load voltage does not exceed 350 V.

Q: Are all active substitutes RoHS3 compliant? All substitute parts listed with "Active" product status are ROHS3 compliant. The original PS7341-1A is non-compliant due to its obsolete status. Transitioning to any active substitute ensures compliance with current environmental and regulatory standards.

Q: How does on-state resistance affect my circuit design? On-state resistance directly impacts voltage drop and power dissipation during relay conduction. PLA110 (22 Ohms) dissipates less heat than PS7341-1A (30 Ohms); AQV214EH and AQV214H (50 Ohms) dissipate more. Verify thermal characteristics align with your application's power budget and thermal management capability.

Q: Why is input voltage specified as 1.2 VDC or 1.14 VDC? Input voltage represents the nominal control signal required to activate the relay. All listed substitutes operate within this narrow tolerance range. Control circuit source voltage must support the specified input voltage to ensure reliable relay activation.