PS7141-2A Solid State Relay SPST-NO Equivalent & Substitute Parts

Part Overview

The PS7141-2A is a solid state relay (SSR) manufactured by CEL, configured as a SPST-NO (Single Pole Single Throw - Normally Open) relay with dual channels in an 8-DIP package. This component operates with a 1.2VDC input signal and supports load voltages from 0V to 400V at 150mA maximum current. The PS7141-2A is classified as obsolete, making identification of active equivalent parts essential for ongoing design support and procurement continuity. Substitute parts must maintain compatibility across input voltage, load voltage range, current capacity, package form factor, and termination style to ensure direct functional replacement.

Substiute Parts

PS7141-2A

CELIn Stock: 1267PS7141-2A Datasheet

Current PartRFQ

AQW210

Panasonic Electric WorksIn Stock: 6061AQW210 Datasheet

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AQW214

Panasonic Electric WorksIn Stock: 11708AQW214 Datasheet

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AQW214EH

Panasonic Electric WorksIn Stock: 16484AQW214EH Datasheet

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PAA140

IXYS Integrated Circuits DivisionIn Stock: 1780PAA140 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PS7141-2A is determined by the following critical parameters:

Mandatory Compatibility Criteria:

• Circuit configuration: SPST-NO (1 Form A) x 2 channels
• Package form factor: 8-DIP (0.300", 7.62mm)
• Termination style: PC Pin
• Mounting type: Through Hole
• Output type: AC and DC switching capability
• Load voltage range: Must support 0V to 400V minimum
• Input voltage: 1.2VDC nominal operation

Current Capacity Consideration: Load current capacity of substitute parts may vary. The PS7141-2A supports 150mA. Substitute parts with equal or greater current capacity provide direct replacement. Parts with lower current capacity (100mA, 120mA) are classified as functional substitutes only when the application load current does not exceed the substitute part's rating.

Compliance Status: The PS7141-2A is RoHS non-compliant and obsolete. Active substitute parts meeting current RoHS3 compliance standards are preferred for new designs and long-term availability assurance.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: PAA140 (IXYS Integrated Circuits Division)

The PAA140 is the optimal substitute for the PS7141-2A. It matches the input voltage specification (1.2VDC), supports the full load voltage range (0V to 400V), and exceeds the current capacity requirement with 250mA rating versus the original 150mA. The PAA140 features superior on-state resistance (8 Ohms maximum) compared to the PS7141-2A (30 Ohms maximum), resulting in lower power dissipation. The part is active in production, ROHS3 compliant, and maintains identical package, termination, and mounting specifications. Moisture sensitivity level matches the original part (MSL 1 - Unlimited).

Secondary Substitutes: AQW214EH and AQW214 (Panasonic Electric Works PhotoMOS™ Series)

The AQW214EH and AQW214 are active alternatives suitable for applications where load current does not exceed 100mA. Both parts support the full 0V to 400V load voltage range and operate with 1.14VDC input (compatible with 1.2VDC nominal operation). The AQW214EH provides 35 Ohms on-state resistance, matching the PS7141-2A specification more closely than the AQW214 (50 Ohms). Both parts are ROHS3 compliant and available in high inventory quantities. These substitutes are appropriate for current designs requiring RoHS compliance and long-term availability.

Tertiary Substitute: AQW210 (Panasonic Electric Works PhotoMOS™ Series)

The AQW210 is suitable only for applications with load current requirements not exceeding 120mA and load voltages limited to 350V maximum. This part does not support the full 400V load voltage range of the original PS7141-2A. Use is restricted to designs where these reduced specifications are acceptable. The AQW210 is ROHS3 compliant and active in production.

Compliance Consideration:

All substitute parts listed are ROHS3 compliant, addressing the RoHS non-compliance status of the obsolete PS7141-2A. For new designs or systems requiring regulatory compliance, any of the active substitute parts provide compliant alternatives.

Frequently Asked Questions (FAQ)

Q: Can the AQW210 directly replace the PS7141-2A in all applications?

A: No. The AQW210 has a maximum load voltage rating of 350V, while the PS7141-2A supports 0V to 400V. Direct replacement is only possible in applications where the load voltage does not exceed 350V. Additionally, the AQW210 current capacity is limited to 120mA compared to the PS7141-2A's 150mA rating.

Q: What is the difference between AQW214 and AQW214EH?

A: Both parts share identical electrical specifications for input voltage (1.14VDC), load voltage range (0V to 400V), and current capacity (100mA). The primary difference is on-state resistance: AQW214EH is rated at 35 Ohms maximum, while AQW214 is rated at 50 Ohms maximum. The AQW214EH provides lower resistance and reduced power dissipation, making it the preferred choice when on-state resistance is a design consideration.

Q: Is the PAA140 a complete replacement for the PS7141-2A?

A: Yes. The PAA140 meets or exceeds all electrical and mechanical specifications of the PS7141-2A. It operates at the same input voltage (1.2VDC), supports the full load voltage range (0V to 400V), and provides superior current capacity (250mA versus 150mA) and lower on-state resistance (8 Ohms versus 30 Ohms). Package, termination, and mounting specifications are identical. The PAA140 is active in production and ROHS3 compliant.

Q: Can I use a substitute part with lower current capacity than the PS7141-2A?

A: Substitute parts with lower current capacity (AQW210 at 120mA, AQW214/AQW214EH at 100mA) may be used only if the application load current does not exceed the substitute part's rating. Exceeding the rated current will result in component failure or degraded performance. Verify application current requirements before selecting a lower-capacity substitute.

Q: What is the significance of the 8-DIP package specification?

A: The 8-DIP (0.300", 7.62mm) package is a dual-in-line through-hole form factor with 0.3-inch row spacing and 7.62mm pin pitch. All substitute parts maintain this identical package specification, ensuring mechanical compatibility with existing printed circuit board layouts and socket designs. No PCB redesign is required when substituting between parts with matching 8-DIP specifications.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts listed (AQW210, AQW214, AQW214EH, and PAA140) are ROHS3 compliant. The original PS7141-2A is RoHS non-compliant. Substitution with any of these active parts addresses RoHS compliance requirements for new designs and procurement.

Q: What does "Product Status: Active" mean for substitute parts?

A: Active product status indicates the part is currently manufactured and available for purchase. The PS7141-2A is classified as obsolete, meaning it is no longer manufactured. Active substitute parts ensure long-term availability and supply chain continuity for ongoing production and field service applications.

Q: How do I determine which substitute part is best for my application?

A: Selection depends on three factors: (1) Required load current—if ≤100mA, AQW214/AQW214EH are suitable; if 100-150mA, AQW210 or PAA140 are required; if >150mA, only PAA140 qualifies. (2) Required load voltage—if ≤350V, all parts are acceptable; if >350V, only AQW214, AQW214EH, and PAA140 are suitable. (3) On-state resistance requirements—if power dissipation is critical, PAA140 (8 Ohms) provides the lowest resistance. For most applications, PAA140 is the optimal choice due to superior specifications and active production status.