PS7141L-1A-A Solid State Relay - Equivalent & Substitute Parts

Part Overview

The PS7141L-1A-A is a solid state relay (SSR) manufactured by CEL, featuring SPST-NO (1 Form A) switching configuration with 150 mA load capacity across 0-400V. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing system maintenance and new design implementations. The part utilizes a 6-SMD gull wing package with surface mount termination, typical of mid-range optoisolated relay applications.

Key Parameters

Parameter	Specification
Manufacturer Part Number	PS7141L-1A-A
Manufacturer	CEL
Circuit Configuration	SPST-NO (1 Form A)
Output Type	AC, DC
Voltage - Input	1.2 VDC
Voltage - Load	0 V ~ 400 V
Load Current	150 mA
On-State Resistance (Max)	30 Ohms
Package / Case	6-SMD (0.300", 7.62mm)
Termination Style	Gull Wing
Mounting Type	Surface Mount
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution criteria for the PS7141L-1A-A are strictly based on the following allowable electrical and mechanical parameters:

Critical Parameters (Must Match or Exceed):

Circuit configuration: SPST-NO (1 Form A)
Package / Case: 6-SMD (0.300", 7.62mm) with gull wing termination
Load voltage range: 0 V ~ 400 V minimum
Load current capacity: 150 mA minimum
Input voltage compatibility: 1.2 VDC or lower activation requirement
Output type: AC, DC or DC-only operation

Substitute parts are grouped into two categories: direct equivalents (matching all critical parameters with lower on-state resistance and higher product activity) and compatible alternatives (meeting minimum electrical requirements while offering improved specifications).

Parameter Comparison

Part Number	Manufacturer	Load Voltage Range	Load Current	Input Voltage	On-State Resistance (Max)	Output Type	Product Status	RoHS Status
PS7141L-1A-A	CEL	0 V ~ 400 V	150 mA	1.2 VDC	30 Ohms	AC, DC	Obsolete	N/A
AQV254A	Panasonic Electric Works	0 V ~ 400 V	150 mA	1.14 VDC	16 Ohms	AC, DC	Active	ROHS3 Compliant
PLA110LSTR	IXYS Integrated Circuits Division	0 V ~ 400 V	150 mA	1.2 VDC	25 Ohms	AC, DC	Active	ROHS3 Compliant
AQV210A	Panasonic Electric Works	0 V ~ 350 V	130 mA	1.14 VDC	35 Ohms	AC, DC	Active	RoHS Compliant
AQV210EA	Panasonic Electric Works	0 V ~ 350 V	130 mA	1.14 VDC	35 Ohms	AC, DC	Active	ROHS3 Compliant
AQV214A	Panasonic Electric Works	0 V ~ 400 V	120 mA	1.14 VDC	50 Ohms	AC, DC	Active	ROHS3 Compliant
AQV214EA	Panasonic Electric Works	0 V ~ 400 V	120 mA	1.14 VDC	50 Ohms	AC, DC	Active	ROHS3 Compliant
AQV214EHA	Panasonic Electric Works	0 V ~ 400 V	120 mA	1.14 VDC	50 Ohms	AC, DC	Active	ROHS3 Compliant
AQV234A	Panasonic Electric Works	0 V ~ 400 V	120 mA	1.14 VDC	50 Ohms	AC, DC	Active	ROHS3 Compliant
AQV103A	Panasonic Electric Works	0 V ~ 250 V	300 mA	2.3 VDC	4 Ohms	DC	Active	RoHS Compliant

Engineering Selection Recommendations

Direct Substitutes (Preferred for Existing Designs):

AQV254A and PLA110LSTR meet all electrical and mechanical parameters of the PS7141L-1A-A with identical 150 mA load current, 0-400 V load voltage range, and gull wing 6-SMD package. Both maintain the SPST-NO circuit configuration and AC/DC output compatibility. AQV254A offers superior on-state resistance (16 Ohms vs 30 Ohms) with active product status and ROHS3 compliance. PLA110LSTR provides on-state resistance of 25 Ohms with matching 1.2 VDC input voltage specification and active product availability.

Compatible Alternatives (For Load-Contingent Applications):

AQV210A, AQV210EA, AQV214A, AQV214EA, AQV214EHA, and AQV234A are suitable for applications where load current and voltage requirements do not exceed 120-130 mA and 350-400 V respectively. These parts share identical packaging, circuit configuration, and gull wing termination with improved on-state resistance characteristics where specifications permit reduced current demands.

AQV103A operates at higher input voltage (2.3 VDC) with reduced load voltage capability (0-250 V) and DC-only output, limiting its substitution to applications with lower voltage switching requirements and significantly higher current capacity (300 mA).

Frequently Asked Questions (FAQ)

Q: Can AQV254A directly replace PS7141L-1A-A in existing designs?

A: Yes. AQV254A maintains identical electrical specifications (150 mA, 0-400 V, SPST-NO configuration) and mechanical compatibility (6-SMD gull wing package). The lower on-state resistance (16 Ohms vs 30 Ohms) provides improved performance characteristics.

Q: What is the primary limitation of AQV210A and AQV210EA substitution?

A: These parts are rated for 130 mA load current versus the PS7141L-1A-A specification of 150 mA, and maximum load voltage of 350 V instead of 400 V. Substitution is valid only when application load currents remain below 130 mA and voltages below 350 V.

Q: Does AQV103A provide equivalent functionality?

A: No. While AQV103A shares the 6-SMD gull wing package and SPST-NO configuration, it operates at 2.3 VDC input (versus 1.2 VDC), supports only DC output (versus AC/DC), and is limited to 0-250 V load voltage. Substitution is restricted to DC-only applications with voltages not exceeding 250 V.

Q: What packaging options are available for substitute parts?

A: All substitute parts maintain the 6-SMD (0.300", 7.62mm) surface mount configuration with gull wing termination, ensuring mechanical and pin compatibility. Packaging formats vary between tube and tape & reel (TR) configurations, affecting procurement and assembly processes.

Q: Are RoHS and ROHS3 compliance differences significant for this application?

A: AQV254A and most Panasonic PhotoMOS™ AQV series alternatives feature ROHS3 compliance, whereas the obsolete PS7141L-1A-A does not specify RoHS status. For applications subject to RoHS regulatory requirements, AQV254A, AQV214A, AQV214EA, AQV214EHA, and AQV234A provide verified ROHS3 compliance.

Q: What on-state resistance trade-offs exist among substitute parts?

A: AQV254A offers the lowest on-state resistance at 16 Ohms, reducing power dissipation. PLA110LSTR provides 25 Ohms, while AQV210/AQV214/AQV234 series provide higher resistance values (35-50 Ohms) corresponding to reduced load current ratings.

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