PS7141L-2A Equivalent & Substitute Parts

Part Overview

The PS7141L-2A is a solid-state relay (SSR) with SPST-NO (1 Form A) dual configuration, designed for switching applications up to 400V AC/DC loads at 150mA. Manufactured by CEL in the PS/OCMOS series, this component is classified as obsolete, necessitating identification of alternative solid-state relay models that maintain functional and electrical compatibility for continued system support and new designs.

Key Parameters

Parameter	PS7141L-2A
Manufacturer	CEL
Circuit Configuration	SPST-NO (1 Form A) x 2
Output Type	AC, DC
Input Voltage	1.2 VDC
Load Voltage Range	0 V ~ 400 V
Load Current	150 mA
On-State Resistance (Max)	30 Ohms
Mounting Type	Surface Mount
Package	8-SMD (0.300", 7.62mm)
Termination Style	Gull Wing
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the PS7141L-2A solid-state relay is determined by strict electrical and mechanical compatibility parameters. The following criteria establish valid substitute relationships:

Primary Compatibility Parameters:

Circuit configuration: SPST-NO (1 Form A) dual channel
Package type: 8-SMD (0.300", 7.62mm) with Gull Wing termination
Output capability: AC and DC load switching
Mounting: Surface mount

Electrical Operating Constraints: Substitute parts must support the required load voltage range (0 V ~ 400 V) and accommodate the input control voltage of 1.2 VDC or lower. Load current capacity and on-state resistance are secondary selection factors; substitutes with equal or superior current ratings and resistance characteristics remain electrically compatible within system design parameters.

The identified substitutes—AQW210A, AQW214A, and AQW214EHA—all manufactured by Panasonic Electric Works—satisfy these core mechanical and electrical requirements while offering the added benefit of active product status and RoHS3 compliance.

Parameter Comparison

Parameter	PS7141L-2A	AQW210A	AQW214A	AQW214EHA
Manufacturer	CEL	Panasonic Electric Works	Panasonic Electric Works	Panasonic Electric Works
Circuit Configuration	SPST-NO (1 Form A) x 2	SPST-NO (1 Form A) x 2	SPST-NO (1 Form A) x 2	SPST-NO (1 Form A) x 2
Output Type	AC, DC	AC, DC	AC, DC	AC, DC
Input Voltage	1.2 VDC	1.14 VDC	1.14 VDC	1.14 VDC
Load Voltage Range	0 V ~ 400 V	0 V ~ 350 V	0 V ~ 400 V	0 V ~ 400 V
Load Current	150 mA	120 mA	100 mA	100 mA
On-State Resistance (Max)	30 Ohms	35 Ohms	50 Ohms	35 Ohms
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package	8-SMD (0.300", 7.62mm)	8-SMD (0.300", 7.62mm)	8-SMD (0.300", 7.62mm)	8-SMD (0.300", 7.62mm)
Termination Style	Gull Wing	Gull Wing	Gull Wing	Gull Wing
Product Status	Obsolete	Active	Active	Active
RoHS Status	Non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

AQW214A and AQW214EHA are the preferred substitutes for the PS7141L-2A in applications requiring the full 0 V ~ 400 V load voltage specification. Both maintain identical load voltage capability and provide active product status with ROHS3 compliance. The AQW214EHA offers marginally superior on-state resistance (35 Ohms vs. 50 Ohms), reducing conduction losses in current-limited applications.

AQW210A serves applications where the maximum load voltage requirement does not exceed 350 V. This substitute delivers superior load current performance (120 mA) and lower on-state resistance (35 Ohms) relative to AQW214 variants, making it suitable for lower-voltage switching applications within compatible voltage windows.

All three substitutes meet the mechanical and electrical constraints of the PS7141L-2A package footprint and termination style, eliminating board redesign requirements. The transition from CEL to Panasonic Electric Works manufacturing introduces ROHS3 compliance and active product lifecycle support, improving long-term component availability and regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can the AQW210A replace the PS7141L-2A in all applications?

A: The AQW210A is electrically compatible for applications operating at load voltages up to 350 V. Applications requiring the full 0 V ~ 400 V range require AQW214A or AQW214EHA substitution.

Q: Are the package dimensions identical across all substitute options?

A: All substitute parts use the 8-SMD (0.300", 7.62mm) package with Gull Wing termination. No board redesign is required for footprint compatibility.

Q: What is the significance of the load current difference between PS7141L-2A and substitute parts?

A: The PS7141L-2A supports 150 mA load current; substitute parts support 100–120 mA. Applications requiring load currents exceeding the substitute specifications require circuit redesign or alternative component selection.

Q: How does the on-state resistance affect circuit performance?

A: On-state resistance directly contributes to conduction losses and output voltage drop. The PS7141L-2A exhibits 30 Ohms maximum resistance. Substitutes range from 35–50 Ohms, producing measurable but acceptable additional voltage drop in most switching applications. Circuit verification is necessary for applications with strict voltage drop specifications.

Q: What regulatory or compliance considerations apply to substitution?

A: The PS7141L-2A is RoHS non-compliant; all substitutes are ROHS3 compliant. Systems designed for RoHS compliance benefit from these substitutes. Applications operating in REACH-regulated markets remain unaffected by substitution, as all parts carry identical REACH status.

Q: Do substitute parts require different control circuit design?

A: No. All substitutes operate at 1.14 VDC input voltage, which is lower than the PS7141L-2A specification of 1.2 VDC, ensuring control circuit compatibility without modification.

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