PS7141L-1C Equivalent & Substitute Parts

Part Overview

The PS7141L-1C is a solid-state relay manufactured by CEL, configured as a SPST-NO/SPST-NC (1 Form A and B) surface-mount device rated for 150 mA at 0–400 V load voltage. This part is classified as obsolete, necessitating identification of equivalent substitute components for continued design implementation and procurement. The PS7141L-1C operates with a 1.2 VDC input and provides dual-channel switching capability in an 8-SMD (0.300", 7.62mm) gull-wing package.

Substiute Parts

PS7141L-1C

CELIn Stock: 1006PS7141L-1C Datasheet

Current PartRFQ

AQW614A

Panasonic Electric WorksIn Stock: 2540AQW614A Datasheet

SimilarRFQ

AQW614EHA

Panasonic Electric WorksIn Stock: 2106AQW614EHA Datasheet

SimilarRFQ

AQW654A

Panasonic Electric WorksIn Stock: 1868AQW654A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PS7141L-1C must satisfy the following critical electrical and mechanical parameters:

Mandatory Matching Parameters:

• Circuit configuration: SPST-NO + SPST-NC (1 Form A and B)
• Package type: 8-SMD (0.300", 7.62mm)
• Termination style: Gull Wing
• Voltage rating - Load: 0 V ~ 400 V
• Output type: AC, DC
• Input voltage: compatible with 1.2 VDC operation

Allowable Variance Parameters:

• Load current: minimum 120 mA (versus original 150 mA)
• On-state resistance: up to 50 Ohms (versus original 30 Ohms)
• Input voltage: 1.14 VDC (versus original 1.2 VDC) is acceptable

The following three Panasonic Electric Works PhotoMOS™ AQW series relays meet the substitution criteria for PS7141L-1C: AQW614A, AQW614EHA, and AQW654A.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts (AQW614A, AQW614EHA, AQW654A) are active products from Panasonic Electric Works with current availability. The selection among these substitutes depends on load current and on-state resistance requirements:

AQW614A and AQW614EHA: Both support 100 mA load current. AQW614EHA offers lower on-state resistance (35 Ohms) compared to AQW614A (50 Ohms), making it suitable for designs requiring reduced power dissipation. Both parts comply with ROHS3 and are REACH unaffected.

AQW654A: Supports 120 mA load current with the lowest on-state resistance (16 Ohms) among all substitutes, providing superior thermal characteristics. This part is RoHS compliant and REACH unaffected.

For applications with load currents up to 100 mA, AQW614EHA is preferred due to balanced performance. For applications requiring 120–150 mA operation with reduced resistance losses, AQW654A is the optimal selection. All substitutes maintain identical package geometry and circuit topology with the original PS7141L-1C.

Frequently Asked Questions (FAQ)

Q: Why is substitution necessary for the PS7141L-1C? A: The PS7141L-1C is classified as obsolete. Equivalent active-production substitutes from established manufacturers ensure long-term design continuity and procurement reliability.

Q: What are the critical parameters for substituting the PS7141L-1C? A: The substitute must maintain the SPST-NO + SPST-NC circuit configuration, 8-SMD (0.300", 7.62mm) gull-wing package, and 0–400 V load voltage rating. Input voltage tolerance and load current capability determine specific substitute selection.

Q: Can I use a substitute with lower load current rating than the original 150 mA? A: Substitutes must support the maximum load current of your design. AQW614A and AQW614EHA rate 100 mA, while AQW654A rates 120 mA. If your application requires 150 mA, none of the listed substitutes are fully equivalent; design modification is necessary.

Q: What is the difference in on-state resistance among the substitutes? A: On-state resistance affects power dissipation and switching speed. AQW654A provides the lowest resistance (16 Ohms), reducing heat generation. AQW614EHA offers intermediate resistance (35 Ohms), and AQW614A has the highest (50 Ohms). Lower resistance is advantageous in current-limited or thermally sensitive applications.

Q: Are the substitutes RoHS compliant? A: Yes. AQW614A and AQW614EHA comply with ROHS3. AQW654A is RoHS compliant. The original PS7141L-1C is RoHS non-compliant, making substitution beneficial for regulatory compliance requirements.

Q: Do the substitutes have identical PCB footprints? A: Yes. All parts use the identical 8-SMD (0.300", 7.62mm) gull-wing package and termination style, requiring no PCB redesign for substitution.

Q: What is the input voltage difference between the original and substitutes? A: The PS7141L-1C operates at 1.2 VDC input, while substitutes operate at 1.14 VDC. This minor variance is functionally compatible for standard logic-level drive circuits.