LX803MEAP TRIAC Equivalent & Substitute Parts

Part Overview

The LX803MEAP is a Logic - Sensitive Gate TRIAC manufactured by Littelfuse Inc., rated for 600 V off-state voltage and 800 mA on-state current in a Through Hole TO-92 package. This component is Active in product status and widely used in AC switching applications requiring sensitive gate triggering. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to availability, supply chain considerations, or design flexibility within the allowed parameter ranges.

Substiute Parts

LX803MEAP

Littelfuse Inc.In Stock: 1097LX803MEAP Datasheet

Current PartRFQ

Z00607MA 1BA2

STMicroelectronicsIn Stock: 4439Z00607MA 1BA2 Datasheet

MFR RecommendedRFQ

Z00607MA 2BL2

STMicroelectronicsIn Stock: 4029Z00607MA 2BL2 Datasheet

MFR RecommendedRFQ

Z00607MA 5BL2

STMicroelectronicsIn Stock: 5053Z00607MA 5BL2 Datasheet

MFR RecommendedRFQ

Z0103MA 2AL2

STMicroelectronicsIn Stock: 4865Z0103MA 2AL2 Datasheet

MFR RecommendedRFQ

Z0103MA 5AL2

STMicroelectronicsIn Stock: 8243Z0103MA 5AL2 Datasheet

MFR RecommendedRFQ

Z0107MA 5AL2

STMicroelectronicsIn Stock: 2396Z0107MA 5AL2 Datasheet

MFR RecommendedRFQ

Z0109MA 2AL2

STMicroelectronicsIn Stock: 19290Z0109MA 2AL2 Datasheet

MFR RecommendedRFQ

Z0109MA 5AL2

STMicroelectronicsIn Stock: 3202Z0109MA 5AL2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LX803MEAP are grouped based on strict electrical and mechanical compatibility criteria. The primary substitution logic is determined by the following parameters:

Critical Matching Parameters:

• Voltage - Off State: 600 V (must match exactly)
• Triac Type: Logic - Sensitive Gate (must match exactly)
• Mounting Type: Through Hole (must match exactly)
• Package / Case: TO-92 or TO-92-3 (mechanical compatibility)
• Configuration: Single (must match exactly)

Allowable Variation Parameters:

• Current - On State (It (RMS)) (Max): 800 mA or higher
• Voltage - Gate Trigger (Vgt) (Max): 1.3 V or lower
• Current - Gate Trigger (Igt) (Max): 3 mA or higher
• Current - Hold (Ih) (Max): 5 mA or higher
• Operating Temperature: -40°C minimum and 110°C minimum (may extend higher)

Substitute parts from STMicroelectronics meet these criteria with on-state current ratings of 800 mA or 1 A, maintaining the 600 V voltage rating and sensitive gate characteristics. All substitute parts are Active in product status and ROHS3 compliant.

Parameter Comparison

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and ROHS3 compliance, ensuring long-term availability and regulatory alignment with the LX803MEAP.

Direct Current Rating Match (800 mA): Z00607MA series parts (Z00607MA 1BA2, Z00607MA 2BL2, Z00607MA 5BL2) provide identical 800 mA on-state current rating with matching 600 V voltage and 1.3 V gate trigger voltage. These are the closest electrical equivalents to the LX803MEAP.

Higher Current Rating (1 A): Z0103MA, Z0107MA, and Z0109MA series parts offer 1 A on-state current, providing additional current margin. These parts maintain the 600 V voltage rating and 1.3 V gate trigger voltage. Operating temperature extends to 125°C, exceeding the LX803MEAP specification. Gate trigger current and hold current specifications vary within acceptable ranges for Logic - Sensitive Gate TRIACs.

Package Considerations: Z00607MA 2BL2 and Z0109MA series are supplied in TO-92 package. Z00607MA 1BA2, Z00607MA 5BL2, Z0103MA, and Z0107MA are supplied in TO-92-3 package. Both package variants are mechanically compatible with TO-226-3 and TO-226AA formed leads specifications.

Frequently Asked Questions (FAQ)

Q: Can Z00607MA series parts directly replace the LX803MEAP? A: Yes. Z00607MA 1BA2, Z00607MA 2BL2, and Z00607MA 5BL2 are direct electrical equivalents with identical 800 mA current rating, 600 V voltage rating, and 1.3 V gate trigger voltage. All are Logic - Sensitive Gate TRIACs in Through Hole TO-92 packages.

Q: What is the difference between Z00607MA and Z0103MA series? A: Z00607MA series maintains 800 mA on-state current matching the LX803MEAP. Z0103MA series provides higher 1 A on-state current with extended operating temperature to 125°C. Both share the same 600 V voltage and 1.3 V gate trigger specifications.

Q: Are TO-92 and TO-92-3 packages interchangeable? A: Both TO-92 and TO-92-3 packages are Through Hole variants compatible with TO-226-3 and TO-226AA formed leads specifications. Package selection depends on specific PCB layout and lead forming requirements. Verify mechanical fit with your application before selection.

Q: Can I use Z0109MA parts with higher gate trigger current (10 mA) instead of the LX803MEAP (3 mA)? A: Z0109MA parts are electrically compatible substitutes with 600 V voltage rating and 1 A on-state current. The higher gate trigger current (10 mA) is within acceptable ranges for Logic - Sensitive Gate TRIAC applications. Verify gate drive circuit capability for your specific application.

Q: What is the inventory status of substitute parts? A: All substitute parts are listed as New Original In Stock with quantities ranging from 2,300 to 19,200 pieces, ensuring availability for production requirements.

Q: Are all substitute parts ROHS3 compliant? A: Yes. All listed substitute parts are ROHS3 compliant and maintain Active product status, meeting current regulatory and supply chain requirements.