LAA100L Solid State Relay - Equivalent & Substitute Parts

Part Overview

The LAA100L is an active SPST-NO (1 Form A) solid state relay manufactured by IXYS Integrated Circuits Division, part of the OptoMOS® series. This through-hole mounted 8-DIP component is designed for AC and DC load switching applications with a maximum load voltage of 350V and 120mA load current capacity. The part is ROHS3 compliant and carries unlimited moisture sensitivity rating (MSL 1). Finding equivalent substitute parts may be necessary due to inventory constraints, supply chain considerations, or application-specific requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

LAA100L

IXYS Integrated Circuits DivisionIn Stock: 839LAA100L 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

Substitute parts for the LAA100L are qualified based on strict electrical and mechanical compatibility criteria. The following parameters must match or remain within acceptable tolerances for direct substitution:

• Circuit configuration: SPST-NO (1 Form A) x 2
• Package / Case: 8-DIP (0.300", 7.62mm)
• Mounting type: Through Hole
• Termination style: PC Pin
• Voltage - Load range: 0V ~ 350V
• Output type: AC, DC
• Load current: 120mA or greater
• On-State Resistance: 25 Ohms or lower
• Input voltage: Within 1.14VDC to 1.26VDC range
• Product status: Active
• RoHS compliance: ROHS3 Compliant

The substitute parts listed below meet all these criteria and are therefore electrically and mechanically interchangeable with the LAA100L in applications requiring these specifications.

Parameter Comparison

Engineering Selection Recommendations

All three parts—LAA100L, AQW210HL, and LH1520AB—are active products with ROHS3 compliance and REACH unaffected status, making them suitable for current design implementations. The AQW210HL (Panasonic PhotoMOS™ AQW series) and LH1520AB (Vishay LH1520 series) are direct electrical and mechanical equivalents to the LAA100L (IXYS OptoMOS® LAA series).

The AQW210HL operates at a slightly lower input voltage (1.14VDC versus 1.2VDC) and carries no moisture sensitivity rating, whereas the LH1520AB operates at a marginally higher input voltage (1.26VDC) with a lower maximum on-state resistance (20 Ohms versus 25 Ohms) and slightly reduced load current capacity (110mA versus 120mA). All three parts share identical package geometry, circuit configuration, and load voltage range, ensuring direct pin-compatible substitution in through-hole PCB applications.

Selection between these parts should be based on availability, supply chain lead times, and application-specific input voltage and on-state resistance requirements within the specified ranges.

Frequently Asked Questions (FAQ)

Q: Can the AQW210HL be used as a direct replacement for the LAA100L?

A: Yes. The AQW210HL is electrically and mechanically compatible with the LAA100L. Both parts feature identical 8-DIP package geometry, SPST-NO (1 Form A) x 2 circuit configuration, PC pin termination, and 0V ~ 350V load voltage range. Input voltage and on-state resistance specifications fall within acceptable substitution parameters.

Q: What is the difference in load current capacity between the LAA100L and LH1520AB?

A: The LAA100L supports 120mA maximum load current, while the LH1520AB supports 110mA. For applications requiring the full 120mA capacity, the LAA100L or AQW210HL should be selected. For applications operating at or below 110mA, the LH1520AB is suitable.

Q: Are all three parts suitable for both AC and DC load switching?

A: Yes. The LAA100L, AQW210HL, and LH1520AB all support AC and DC output types across the 0V ~ 350V load voltage range.

Q: Do moisture sensitivity differences affect substitution compatibility?

A: The LAA100L and LH1520AB carry MSL 1 (Unlimited) rating, while the AQW210HL carries Not Applicable. This does not prevent substitution. MSL ratings indicate handling and storage requirements; they do not affect electrical performance or functional compatibility in the application.

Q: Are all three parts RoHS compliant?

A: Yes. The LAA100L, AQW210HL, and LH1520AB are all ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.

Q: What is the significance of on-state resistance differences?

A: On-state resistance affects voltage drop and power dissipation during relay operation. The LAA100L and AQW210HL specify 25 Ohms maximum, while the LH1520AB specifies 20 Ohms maximum. Lower on-state resistance reduces heat generation. For applications sensitive to voltage drop or thermal performance, the LH1520AB offers a performance advantage.

Q: Can these parts be used interchangeably in existing PCB designs?

A: Yes. All three parts share identical 8-DIP (0.300", 7.62mm) package geometry and PC pin termination, enabling direct pin-compatible substitution in through-hole PCB layouts without design modification.