PS7141L-1B-A Equivalent and Substitute Parts

Part Overview

The PS7141L-1B-A is a solid-state relay (SSR) manufactured by CEL, designated as a SPST-NC (1 Form B) device in a 6-SMD package rated for 150mA at 0-400V load. This component is classified as obsolete. Substitute parts are required for new designs and ongoing production due to the discontinued status of the original manufacturer part.

Substiute Parts

PS7141L-1B-A

CELIn Stock: 1123PS7141L-1B-A Datasheet

Current PartRFQ

AQV414A

Panasonic Electric WorksIn Stock: 13842AQV414A Datasheet

SimilarRFQ

AQV414EHA

Panasonic Electric WorksIn Stock: 838AQV414EHA Datasheet

SimilarRFQ

AQV454A

Panasonic Electric WorksIn Stock: 3258AQV454A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PS7141L-1B-A is determined by the following critical parameters:

• Circuit Configuration: SPST-NC (1 Form B) architecture must be maintained
• Load Voltage Range: 0 V ~ 400 V operational capability
• Load Current Capacity: Minimum 150 mA (exact match or higher acceptable)
• Package Compatibility: 6-SMD (0.300", 7.62mm) with Gull Wing termination
• Input Voltage: Compatible with 1.2VDC control signal
• Output Types: AC and DC load support

The substitute parts identified (AQV414A, AQV414EHA, AQV454A) satisfy these core electrical and mechanical constraints. Two parts operate at 120mA load current, while one matches the 150mA rating of the original.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are classified as active products with current manufacturer support, contrasting with the obsolete status of the PS7141L-1B-A. The Panasonic PhotoMOS™ AQV series substitutes provide ROHS3 compliance and REACH unaffected status, offering regulatory advantages for new designs.

AQV454A is the optimal electrical substitute, matching the 150mA load current of the original part and providing superior on-state resistance (16 Ohms versus 30 Ohms). This part delivers direct current rating equivalency and improved performance characteristics.

AQV414A and AQV414EHA operate at 120mA load current, making them suitable for applications where the load current requirement does not exceed this threshold. Both maintain the 0-400V load voltage range and SPST-NC configuration. AQV414EHA is packaged in tube format with alternative HTSUS classification.

All substitute parts support the same input voltage range and package mechanical requirements, ensuring direct form-fit-function compatibility at the circuit board level.

Frequently Asked Questions (FAQ)

Q: Can AQV414A or AQV414EHA be used in applications requiring 150mA continuous load current? A: No. These parts are rated for 120mA maximum load current. Applications requiring 150mA must use AQV454A to maintain design margin and component reliability.

Q: Are the Panasonic substitutes compatible with the PS7141L-1B-A package footprint? A: Yes. All substitute parts share the identical 6-SMD (0.300", 7.62mm) package with Gull Wing termination, enabling direct board-level replacement without layout changes.

Q: What is the significance of the lower on-state resistance in AQV454A? A: The AQV454A exhibits 16 Ohms on-state resistance compared to the original 30 Ohms specification. This lower resistance reduces resistive heating and voltage drop across the relay contacts, improving efficiency in DC and low-frequency AC load applications.

Q: Do all substitute parts support both AC and DC output? A: Yes. All three Panasonic PhotoMOS™ AQV parts (AQV414A, AQV414EHA, AQV454A) are specified for AC and DC output, matching the original PS7141L-1B-A capability.

Q: What is the difference between AQV414A and AQV414EHA? A: Both parts are electrically identical with the same voltage, current, and resistance specifications. The primary difference is packaging format (AQV414A in tube, AQV414EHA classified with different HTSUS tariff code) and regional availability reflected in inventory levels.

Q: Why are the input voltages slightly different (1.2VDC vs 1.14VDC)? A: The 1.14VDC input specification for Panasonic parts represents a tighter specification within the same functional control voltage range. Both specifications are compatible with standard logic-level control signals, and the difference does not affect circuit operation in typical applications.

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