PS7141-2B Solid State Relay SPST-NC Equivalent & Substitute Parts

Part Overview

The PS7141-2B is a Solid State SPST-NC (1 Form B) relay manufactured by CEL, configured as a dual-channel device in an 8-DIP package. This component operates with a 1.2VDC input signal and switches loads up to 400V at 150mA across AC and DC applications. The PS7141-2B is classified as obsolete, making identification of active equivalent and substitute parts necessary for ongoing system support and new design implementations.

Substiute Parts

PS7141-2B

CELIn Stock: 1263PS7141-2B Datasheet

Current PartRFQ

LBB110

IXYS Integrated Circuits DivisionIn Stock: 2839LBB110 Datasheet

DirectRFQ

AQW254

Panasonic Electric WorksIn Stock: 1365AQW254 Datasheet

SimilarRFQ

AQW414

Panasonic Electric WorksIn Stock: 13708AQW414 Datasheet

SimilarRFQ

AQW414EH

Panasonic Electric WorksIn Stock: 1452AQW414EH Datasheet

SimilarRFQ

AQW454

Panasonic Electric WorksIn Stock: 2317AQW454 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PS7141-2B is determined by the following critical parameters: circuit configuration (SPST-NC Form B), package type (8-DIP), input voltage (1.2VDC nominal), load voltage range (0V ~ 400V maximum), load current capability (minimum 120mA to 150mA), and physical mounting compatibility (Through Hole, PC Pin termination).

The substitute parts are grouped into two categories:

Direct Substitute (Electrical Compatibility): Parts that maintain SPST-NC (Form B) circuit configuration with load voltage up to 400V and load current between 100mA and 150mA.

Similar Substitute (Circuit Variation): Parts that differ in circuit configuration (SPST-NO Form A) or load current ratings but maintain package compatibility and voltage operation within acceptable ranges for applications requiring functional substitution.

Parameter Comparison

Engineering Selection Recommendations

For Direct Substitution (Same Circuit Form):

LBB110, AQW414EH, AQW414, and AQW454 maintain SPST-NC (Form B) configuration identical to the PS7141-2B. All substitute parts are in Active product status with current manufacturing support. LBB110 and AQW414EH offer the closest electrical alignment with load voltage and current parameters. All active substitutes feature RoHS3 compliance or RoHS compliance status, eliminating obsolescence risk and meeting modern environmental standards.

For Functional Substitution (Different Circuit Form):

AQW254 operates in SPST-NO (Form A) configuration, which inverts the relay logic state (normally open instead of normally closed). This part is suitable only in applications where the inverted switching behavior is architecturally acceptable. AQW254 shares identical 8-DIP package geometry, load voltage range (0V ~ 400V), and 120mA current rating.

Compliance and Availability:

All substitute parts are in Active product status with confirmed inventory availability. RoHS3 compliant parts (LBB110, AQW414EH, AQW254) and RoHS compliant parts (AQW454) meet current regulatory requirements. The PS7141-2B's RoHS non-compliant and obsolete status makes transition to any active substitute necessary for future production and supply chain continuity.

Frequently Asked Questions (FAQ)

Q: Can AQW414 or AQW414EH directly replace the PS7141-2B?

A: Both maintain identical SPST-NC (Form B) circuit configuration and 8-DIP package. Load current rating is reduced from 150mA to 100mA. Substitution is valid for applications where the 100mA load current capability is sufficient. AQW414EH has lower on-state resistance (35 Ohms vs. 50 Ohms for AQW414).

Q: What is the difference between LBB110 and the AQW4xx series?

A: LBB110 and all AQW parts maintain SPST-NC (Form B) configuration and 8-DIP package. LBB110 operates at 0V ~ 350V maximum load voltage (50V lower than AQW series and PS7141-2B). LBB110 suits applications within this lower voltage envelope with improved RoHS3 compliance and active manufacturing status.

Q: When should AQW254 be selected instead of other substitutes?

A: AQW254 operates in SPST-NO (Form A) logic state, which is the inverse of the PS7141-2B's SPST-NC (Form B). Selection requires redesign of relay control logic. AQW254 is valid only where inverted switching behavior is accommodated in circuit design. All other parameters (package, voltage, current) remain compatible.

Q: Are all substitute parts available in the same through-hole format?

A: All substitute parts (LBB110, AQW414, AQW414EH, AQW454, AQW254) share identical 8-DIP (0.300", 7.62mm) package and through-hole PC pin termination. Pin-for-pin PCB compatibility is maintained across all substitutes. Physical mounting and interconnection requirements are identical to the original PS7141-2B.

Q: Which substitute offers the best overall compatibility with the PS7141-2B?

A: AQW454 and AQW414EH offer the strongest electrical and compliance alignment. AQW454 matches the 120mA load current (150mA maximum for PS7141-2B) and provides 0V ~ 400V load voltage range with superior 16 Ohm on-state resistance. AQW414EH provides 0V ~ 400V operation with 35 Ohm on-state resistance. Both are in Active status with RoHS compliance.