PS7142-1A-A Equivalent & Substitute Parts

Part Overview

The PS7142-1A-A is a solid-state relay manufactured by CEL, configured as a SPST-NO (1 Form A) device in a 6-DIP package with 200 mA load current capacity and 0–400 V load voltage range. The product is currently marked as obsolete, making identification of functionally compatible alternatives essential for ongoing production, maintenance, and system design continuity. Substitute parts must maintain equivalent switching characteristics, package configuration, and electrical specifications to ensure direct compatibility in existing applications.

Substiute Parts

PS7142-1A-A

CELIn Stock: 1147PS7142-1A-A Datasheet

Current PartRFQ

AQV203

Panasonic Electric WorksIn Stock: 6479AQV203 Datasheet

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AQV204

Panasonic Electric WorksIn Stock: 1674AQV204 Datasheet

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AQV253

Panasonic Electric WorksIn Stock: 1395AQV253 Datasheet

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AQV254

Panasonic Electric WorksIn Stock: 16788AQV254 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the PS7142-1A-A is determined by compatibility in the following parameters: circuit configuration (SPST-NO), package type (6-DIP through-hole), output type (AC/DC), and electrical operating range. Four substitute parts from Panasonic Electric Works' PhotoMOS™ AQV series meet these baseline requirements.

All substitute candidates maintain identical package geometry (6-DIP 0.300"), through-hole termination, and SPST-NO configuration. Substitution is categorized by two key electrical constraints: load voltage rating and load current capacity.

Group 1 – Full voltage/current compatibility: Parts supporting 0–400 V load voltage with 200 mA current capacity directly parallel the PS7142-1A-A electrical envelope.

Group 2 – Full voltage/reduced current compatibility: Parts supporting 0–400 V load voltage with 150 mA current capacity provide full voltage coverage with 25% current derating.

Group 3 – Reduced voltage/full current compatibility: Parts supporting 0–250 V load voltage with 200 mA current capacity maintain current capacity with 37.5% voltage derating.

Group 4 – Reduced voltage/reduced current compatibility: Parts supporting 0–250 V load voltage with 150 mA current capacity provide both voltage and current derating.

Input voltage requirements vary across substitutes (1.14 VDC to 2.3 VDC) and represent control-side specifications; selection depends on driver circuit characteristics.

Parameter Comparison

Engineering Selection Recommendations

For 400 V applications with 200 mA requirement: The PS7142-1A-A does not have an active substitute with identical 200 mA at 400 V specifications. Design migration requires current derating to 150 mA. AQV254 is the optimal choice, offering ROHS3 compliance and REACH unaffected status with active product support.

For 400 V applications with reduced current tolerance (≤150 mA): AQV204 and AQV254 both provide 400 V load voltage with 150 mA current capacity. AQV254 features lower input voltage requirement (1.14 VDC) compared to AQV204 (2.3 VDC), reducing driver circuit burden.

For 250 V applications with 200 mA requirement: AQV203 and AQV253 both support 250 V load voltage with 200 mA current capacity. AQV253 offers lower input voltage (1.14 VDC) versus AQV203 (2.3 VDC). Both carry ROHS3 compliance and REACH unaffected status.

For cost-optimized selection: AQV254 maintains the largest documented inventory (16,747 pieces) among all substitutes, supporting sourcing continuity and pricing stability.

All Panasonic alternatives provide superior on-state resistance characteristics (8–16 Ohms maximum) relative to the PS7142-1A-A (10 Ohms maximum), resulting in lower heat dissipation and improved switching efficiency.

Frequently Asked Questions (FAQ)

Q: Can AQV254 directly replace PS7142-1A-A in all applications? A: AQV254 is mechanically and electrically compatible at the package level (6-DIP through-hole, SPST-NO configuration). However, AQV254 provides 150 mA maximum load current versus PS7142-1A-A's 200 mA. Applications requiring the full 200 mA load current at 400 V load voltage must be redesigned or circuit current requirements reassessed.

Q: What is the difference in input voltage between the PS7142-1A-A and its substitutes? A: The PS7142-1A-A requires 1.2 VDC input. Panasonic substitutes range from 1.14 VDC (AQV254, AQV253) to 2.3 VDC (AQV204, AQV203). Driver circuits must supply adequate input voltage for the selected substitute. Lower input voltage substitutes (1.14 VDC) may reduce control-side power dissipation.

Q: Are all substitute parts RoHS3 compliant? A: All four Panasonic PhotoMOS™ AQV substitutes are ROHS3 compliant. The PS7142-1A-A RoHS status is not specified. ROHS3 compliance is beneficial for products subject to European Union environmental directives.

Q: What is the REACH status impact? A: The PS7142-1A-A is listed as REACH affected, indicating substances of concern. All four Panasonic substitutes are REACH unaffected, offering regulatory advantage for applications subject to REACH compliance requirements.

Q: Can I use AQV203 or AQV253 if my load voltage is only 250 V? A: Both AQV203 and AQV253 support 0–250 V load voltage with 200 mA current capacity. For applications where maximum load voltage does not exceed 250 V, either part provides electrical and mechanical compatibility without derating penalties.

Q: Which substitute offers the best on-state resistance performance? A: AQV203 and AQV253 both offer 8 Ohms maximum on-state resistance, improving upon the PS7142-1A-A's 10 Ohms maximum. AQV204 and AQV254 feature 16 Ohms maximum, representing a 60% increase in resistance but maintaining functionality within 0–400 V applications.

Q: How do I verify package compatibility? A: All substitute parts utilize the identical 6-DIP (0.300", 7.62mm) package with PC pin termination and through-hole mounting. Physical footprint, pin pitch, and PCB land patterns are fully compatible without board redesign.