PAA110L Solid State Relay - Equivalent & Substitute Parts

Part Overview

The PAA110L is an active solid state relay (SSR) manufactured by IXYS Integrated Circuits Division, part of the OptoMOS® series. This component is a SPST-NO (Single Pole Single Throw - Normally Open) relay with dual form A configurations in an 8-DIP through-hole package. The PAA110L is designed for AC and DC load switching applications with a maximum load voltage of 400V and 150mA current capacity. As an active product with full RoHS3 compliance and unlimited moisture sensitivity rating, equivalent and substitute parts may be required for inventory optimization, regional availability, or design flexibility in production environments.

Substiute Parts

PAA110L

IXYS Integrated Circuits DivisionIn Stock: 1545PAA110L Datasheet

Current PartRFQ

AQW210HL

Panasonic Electric WorksIn Stock: 1343AQW210HL Datasheet

MFR RecommendedRFQ

LH1520AB

Vishay Semiconductor Opto DivisionIn Stock: 7410LH1520AB Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PAA110L is determined by strict alignment with the following critical parameters:

Package Compatibility: All substitute parts must use the 8-DIP (0.300", 7.62mm) through-hole package to ensure direct PCB compatibility without layout modifications.

Circuit Configuration: Substitute parts must maintain SPST-NO (1 Form A) x 2 configuration to preserve the same switching topology and pin functionality.

Load Voltage Range: The PAA110L operates at 0V ~ 400V. Substitute parts with lower maximum load voltage ratings (such as 350V) remain functionally compatible for applications operating within the lower voltage envelope.

Load Current: The PAA110L supports 150mA maximum load current. Substitute parts with lower current ratings (110mA or 120mA) are compatible for applications requiring equal or lower current switching.

Input Voltage: The PAA110L requires 1.2VDC input. Substitute parts with similar input voltage specifications (1.14VDC to 1.26VDC) are compatible within standard logic-level control circuits.

On-State Resistance: The PAA110L specifies 25 Ohms maximum. Substitute parts with equal or lower on-state resistance maintain equivalent thermal and power dissipation characteristics.

Regulatory Compliance: All substitute parts must maintain RoHS3 compliance and REACH unaffected status to meet current manufacturing and environmental standards.

The two identified substitute parts (AQW210HL and LH1520AB) meet all critical substitution criteria within their specified parameter ranges.

Parameter Comparison

Engineering Selection Recommendations

All three parts (PAA110L, AQW210HL, and LH1520AB) maintain active product status with full RoHS3 compliance and REACH unaffected certification, ensuring regulatory alignment for current manufacturing standards.

PAA110L (IXYS OptoMOS®): Primary selection for applications requiring maximum load voltage (400V) and maximum load current (150mA) specifications. Suitable for high-voltage switching applications within the 0V to 400V envelope.

AQW210HL (Panasonic PhotoMOS™ AQW): Compatible substitute for applications operating within 0V to 350V load voltage and 120mA maximum current requirements. Maintains equivalent on-state resistance (25 Ohms) and input voltage compatibility (1.14VDC).

LH1520AB (Vishay LH1520): Compatible substitute for applications operating within 0V to 350V load voltage and 110mA maximum current requirements. Offers improved on-state resistance performance (20 Ohms maximum) compared to the primary part.

Selection between substitute parts depends on application-specific load voltage and current requirements. All parts share identical package, circuit configuration, and termination characteristics, enabling direct PCB compatibility.

Frequently Asked Questions (FAQ)

Q: Can the AQW210HL or LH1520AB be used as direct replacements for the PAA110L?

A: Yes, both parts are direct pin-compatible substitutes for through-hole PCB applications. All three parts use the 8-DIP (0.300", 7.62mm) package with identical pin configurations and SPST-NO (1 Form A) x 2 circuit topology. Substitution is valid when application load voltage does not exceed 350V and load current does not exceed 120mA (AQW210HL) or 110mA (LH1520AB).

Q: What are the load voltage limitations when using substitute parts?

A: The PAA110L supports 0V to 400V load voltage. Both substitute parts (AQW210HL and LH1520AB) support 0V to 350V load voltage. Applications requiring switching above 350V must use the PAA110L. Applications operating at or below 350V can use any of the three parts.

Q: Are there load current differences between these parts?

A: Yes. The PAA110L supports 150mA maximum load current. The AQW210HL supports 120mA, and the LH1520AB supports 110mA. Select based on application current requirements. Applications requiring more than 120mA must use the PAA110L.

Q: Do all three parts have the same input voltage requirements?

A: Input voltage specifications are similar but not identical. PAA110L requires 1.2VDC, AQW210HL requires 1.14VDC, and LH1520AB requires 1.26VDC. All three are compatible with standard logic-level control circuits (3.3V to 5V TTL/CMOS outputs). Verify control circuit output voltage compatibility with the specific part's input specification.

Q: What is the difference in on-state resistance between these parts?

A: The PAA110L and AQW210HL both specify 25 Ohms maximum on-state resistance. The LH1520AB specifies 20 Ohms maximum, offering lower resistance and reduced power dissipation. For applications sensitive to on-state voltage drop, the LH1520AB provides improved performance.

Q: Are all three parts RoHS3 compliant?

A: Yes. The PAA110L, AQW210HL, and LH1520AB are all RoHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for manufacturing and distribution.

Q: Can these parts be used in both AC and DC switching applications?

A: Yes. All three parts support both AC and DC output types, enabling use in mixed-signal switching applications without output type restrictions.