PS7160-1A Solid State Relay SPST-NO Equivalent and Substitute Parts

Part Overview

The PS7160-1A is a solid state SPST-NO (Single Pole Single Throw, Normally Open) relay manufactured by CEL in a 6-DIP package with a 90 mA load current rating at 0-600V. This product is currently obsolete, necessitating identification of functionally compatible alternative components for continued circuit implementation. Substitute parts maintain identical physical packaging and electrical interface specifications while offering active product status and improved compliance characteristics.

Substiute Parts

PS7160-1A

CELIn Stock: 2697PS7160-1A Datasheet

Current PartRFQ

PLA143

LittelfuseIn Stock: 1492PLA143 Datasheet

DirectRFQ

AQV216

Panasonic Electric WorksIn Stock: 3806AQV216 Datasheet

SimilarRFQ

AQV216EH

Panasonic Electric WorksIn Stock: 20236AQV216EH Datasheet

SimilarRFQ

CT138

Coto TechnologyIn Stock: 3944CT138 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution compatibility for the PS7160-1A is determined by the following critical parameters: identical 6-DIP package dimensions, SPST-NO circuit configuration, 1.2 VDC input voltage compatibility, 0-600V load voltage range, and load current rating at or above 90 mA. The PC Pin termination style and through-hole mounting requirement are fixed constraints.

Substitute parts are grouped as follows:

Direct Functional Equivalent: PLA143 (Littelfuse) provides load current of 100 mA with matching 50 Ohms on-state resistance, representing the closest electrical and mechanical replacement.

Similar Performance Alternatives: AQV216, AQV216EH (Panasonic Electric Works), and CT138 (Coto Technology) provide SPST-NO relay functionality in the same 6-DIP package with slightly reduced load current ratings (50 mA and 80 mA respectively) but maintain full 0-600V load voltage capability and PC Pin termination. These alternatives exhibit variations in input voltage (1.14 VDC to 1.37 VDC) and on-state resistance (60-120 Ohms).

Parameter Comparison

Engineering Selection Recommendations

First Choice - PLA143 (Littelfuse): This part provides the most direct substitution with load current of 100 mA (exceeding the original 90 mA specification) and identical on-state resistance of 50 Ohms. PLA143 is in active product status with ROHS3 compliance and represents the optimal replacement for new designs and end-of-life scenarios for the PS7160-1A.

Alternative Selection - CT138 (Coto Technology): CT138 offers 80 mA load current with 60 Ohms on-state resistance and active product status with ROHS3 compliance. This part is suitable for applications where the load current requirement is 80 mA or less.

Secondary Alternative - AQV216 or AQV216EH (Panasonic Electric Works): Both variants provide 50 mA load current with 120 Ohms on-state resistance. AQV216EH has RoHS Compliant status and higher inventory availability (20,200 units). These parts are suitable only for applications with load current requirements of 50 mA or below.

Selection among these alternatives depends on the specific load current requirement of the application. Applications requiring load current exceeding 80 mA must use PLA143. Applications with load current between 50-80 mA have multiple options. Applications with load current of 50 mA or below may use any of the four substitute parts.

Frequently Asked Questions (FAQ)

Q: Can PLA143 directly replace PS7160-1A in existing circuits? A: Yes. PLA143 maintains identical 6-DIP package dimensions, SPST-NO configuration, 1.2 VDC input voltage, 0-600V load voltage rating, and PC Pin termination. The 100 mA load current exceeds the original 90 mA specification.

Q: What is the maximum load current limitation for AQV216 and AQV216EH? A: Both parts are rated for 50 mA maximum load current. Applications requiring 90 mA operation cannot use these parts.

Q: Are all substitute parts RoHS compliant? A: PLA143, AQV216, AQV216EH, and CT138 are all RoHS compliant (ROHS3 or equivalent status). The original PS7160-1A is RoHS non-compliant.

Q: Do the substitute parts require PCB layout modifications? A: No. All substitute parts use the same 6-DIP (0.300", 7.62mm) package and PC Pin termination, providing direct pin-for-pin compatibility without PCB design changes.

Q: How do input voltage specifications differ among substitutes? A: PS7160-1A and PLA143 both operate at 1.2 VDC input. AQV216 and AQV216EH operate at 1.14 VDC (lower threshold), and CT138 operates at 1.37 VDC (higher threshold). All specifications remain within practical input circuit tolerances.

Q: Which part offers the lowest on-state resistance? A: PS7160-1A and PLA143 both offer 50 Ohms maximum on-state resistance. CT138 offers 60 Ohms, and AQV216/AQV216EH offer 120 Ohms.

Q: What is the moisture sensitivity level requirement? A: PS7160-1A specifies MSL 1 (Unlimited). PLA143 specifies MSL 1 (Unlimited). AQV216 and AQV216EH specify Not Applicable. CT138 specifies MSL 2 (1 Year). All parts accommodate standard manufacturing and storage conditions.