PS7141-1B-A Solid State Relay SPST-NC Equivalent & Substitute Parts

Part Overview

The PS7141-1B-A is a solid state relay (SSR) manufactured by CEL, configured as a SPST-NC (1 Form B) device in a 6-DIP package. This component operates with a 1.2VDC input signal and supports load voltages from 0V to 400V at 150mA maximum current, with both AC and DC output capability. The part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. Substitute parts must maintain functional compatibility across input voltage, load voltage range, current rating, and package form factor.

Substiute Parts

PS7141-1B-A

CELIn Stock: 1338PS7141-1B-A Datasheet

Current PartRFQ

AQV414

Panasonic Electric WorksIn Stock: 1706AQV414 Datasheet

SimilarRFQ

AQV414EH

Panasonic Electric WorksIn Stock: 7006AQV414EH Datasheet

SimilarRFQ

AQV454

Panasonic Electric WorksIn Stock: 3167AQV454 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PS7141-1B-A is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Circuit configuration must be SPST-NC (1 Form B)
• Package must be 6-DIP (0.300", 7.62mm) with PC Pin termination
• Mounting type must be Through Hole
• Load voltage range must encompass 0V to 400V
• Output type must support both AC and DC
• Input voltage must be compatible with 1.2VDC control signal
• Load current rating must meet or exceed 150mA requirement

Substitute Parts Identified:

The PS7141-1B-A has three active substitute parts from Panasonic Electric Works PhotoMOS™ AQV series:

1. AQV414 — Reduced current rating (120mA); suitable for applications requiring ≤120mA load current
2. AQV414EH — Reduced current rating (120mA); enhanced specification variant; suitable for applications requiring ≤120mA load current
3. AQV454 — Matched current rating (150mA); superior on-state resistance (16Ω vs. 30Ω); direct functional equivalent

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: AQV454

The AQV454 is the optimal substitute for the PS7141-1B-A in applications requiring full parameter compatibility. This part maintains the 150mA load current rating and provides superior on-state resistance performance (16Ω vs. 30Ω). The AQV454 is manufactured by Panasonic Electric Works, an active product with ROHS3 compliance and REACH unaffected status, ensuring regulatory compliance for new designs. Input voltage compatibility (1.14VDC vs. 1.2VDC) is within acceptable control signal tolerances for standard SSR driver circuits.

Secondary Substitutes: AQV414 and AQV414EH

The AQV414 and AQV414EH are suitable substitutes only for applications where the load current requirement does not exceed 120mA. Both parts are active products with ROHS3 compliance and REACH unaffected status. The AQV414EH variant provides identical electrical specifications to AQV414 with enhanced availability (6900 pcs in stock vs. 1599 pcs). These substitutes exhibit higher on-state resistance (50Ω vs. 30Ω), which may increase power dissipation in current-limited applications.

Compliance Considerations

All three substitute parts are ROHS3 compliant and REACH unaffected, providing regulatory advantages over the obsolete PS7141-1B-A (REACH affected). Selection should prioritize active products with current manufacturing status to ensure long-term supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can AQV414 or AQV414EH replace PS7141-1B-A in all applications?

A: No. AQV414 and AQV414EH are limited to 120mA maximum load current, while PS7141-1B-A supports 150mA. These substitutes are compatible only with applications requiring ≤120mA. For full current compatibility, use AQV454.

Q: What is the difference between AQV414 and AQV414EH?

A: Both parts have identical electrical specifications. The distinction is packaging and inventory availability. AQV414EH has higher stock levels (6900 pcs vs. 1599 pcs) and is designated as an enhanced specification variant.

Q: Are the input voltage differences between PS7141-1B-A (1.2VDC) and substitute parts (1.14VDC) significant?

A: No. The 0.06VDC difference is within standard control signal tolerances for SSR driver circuits. Both voltage levels are compatible with typical TTL and CMOS logic outputs.

Q: Does the higher on-state resistance of AQV414/AQV414EH (50Ω vs. 30Ω) affect circuit performance?

A: On-state resistance affects power dissipation and voltage drop across the relay. Higher resistance increases heat generation. For applications sensitive to voltage drop or thermal performance, AQV454 (16Ω) provides superior characteristics.

Q: Are all substitute parts pin-compatible with PS7141-1B-A?

A: Yes. All substitute parts use 6-DIP (0.300", 7.62mm) package with PC Pin termination and Through Hole mounting, ensuring direct PCB compatibility.

Q: What is the REACH compliance advantage of substitute parts?

A: PS7141-1B-A is REACH affected, indicating potential substance of concern restrictions. All substitute parts are REACH unaffected, providing regulatory compliance for EU and global markets without additional substance documentation.

Q: Which substitute part should be selected for new designs?

A: AQV454 is recommended for new designs requiring full parameter compatibility with PS7141-1B-A. It is an active product with ROHS3 compliance, REACH unaffected status, and superior on-state resistance performance.