PS7141L-1B Equivalent & Substitute Parts

Part Overview

The PS7141L-1B is a Solid State SPST-NC (1 Form B) relay manufactured by CEL, designed for low-voltage DC input control of AC and DC loads up to 400V. The part is currently obsolete, necessitating identification of functionally equivalent alternatives from active manufacturers that maintain compatibility with the electrical and mechanical specifications of the original design.

Substiute Parts

PS7141L-1B

CELIn Stock: 1560PS7141L-1B 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 for the PS7141L-1B is determined by alignment with the following critical parameters:

• Circuit Configuration: SPST-NC (1 Form B) architecture
• Load Voltage Range: 0 V ~ 400 V continuous operation capability
• Package Compatibility: 6-SMD (0.300", 7.62mm) surface mount footprint
• Electrical Interface: 1.2 VDC (±0.06 VDC tolerance acceptable) input voltage
• Current Capability: Minimum 150 mA load current support
• Output Characteristics: AC and DC load switching capability

All substitute parts listed maintain identical circuit topology, voltage rating, package footprint, and mounting method. Variations in input voltage threshold (1.14 VDC vs. 1.2 VDC), on-state resistance, and load current rating are within functional equivalence for most applications using the PS7141L-1B.

Parameter Comparison

Engineering Selection Recommendations

AQV454A is the preferred direct substitute for PS7141L-1B applications. This part maintains identical 150 mA load current capability and provides superior on-state resistance (16 Ohms vs. 30 Ohms), reducing power dissipation and thermal stress. The part is manufactured by Panasonic Electric Works with active product status and ROHS3 compliance, ensuring ongoing availability and environmental regulatory conformance.

AQV414A and AQV414EHA are functional alternatives where load current requirements do not exceed 120 mA. Both parts feature ROHS3 compliance and active production status. AQV414A is available in higher quantities (13,800 units), while AQV414EHA provides equivalent electrical specifications with lower inventory levels (809 units). Selection between these two variants should be based on supply chain requirements and lead-time considerations.

All three substitute parts are direct drop-in replacements from a package footprint and circuit topology perspective. No PCB redesign is required for integration into existing designs.

Frequently Asked Questions (FAQ)

Q: Can AQV414A or AQV414EHA substitute for PS7141L-1B if my circuit requires 150 mA load current?

A: No. AQV414A and AQV414EHA are rated for maximum 120 mA load current, which is below the PS7141L-1B specification of 150 mA. These parts are suitable only for applications requiring 120 mA or less. AQV454A supports the full 150 mA specification.

Q: What is the difference between AQV414A and AQV414EHA?

A: Both parts have identical electrical specifications (1.14 VDC input, 120 mA load current, 50 Ohms on-state resistance, 0-400V load voltage). The differences are HTSUS classification codes and inventory availability. AQV414A has higher stock levels and is the standard form, while AQV414EHA is a variant with different regulatory coding. Electrical compatibility and performance are equivalent.

Q: Is PCB layout modification necessary when switching from PS7141L-1B to any AQV substitute?

A: No. All substitute parts use identical 6-SMD (0.300", 7.62mm) package dimensions and gull wing termination. The parts are mechanically interchangeable with existing PCB designs without layout changes.

Q: Why is the input voltage different (1.14 VDC vs. 1.2 VDC)?

A: The AQV series operates at 1.14 VDC nominal input, compared to PS7141L-1B at 1.2 VDC. This 0.06 VDC difference is functionally negligible in typical circuit designs where control signal voltage is 3.3V or 5V, as the input threshold represents only the minimum triggering voltage. System designs using PS7141L-1B will operate identically with AQV substitutes at standard logic voltage levels.

Q: What is the significance of lower on-state resistance in AQV454A?

A: On-state resistance of 16 Ohms (AQV454A) versus 30 Ohms (PS7141L-1B) means less heat dissipation during load current flow. Lower resistance improves thermal efficiency and allows operation closer to rated current limits without thermal derating. For applications operating near maximum current specifications, AQV454A offers superior performance margin.

Q: Are all substitute parts RoHS compliant?

A: Yes. AQV414A, AQV414EHA, and AQV454A are all ROHS3 compliant. The original PS7141L-1B is RoHS non-compliant. Selection of any substitute part ensures environmental regulatory compliance for new designs or redesigned legacy systems.