Equivalent & Substitute Parts for L0103NEAP

Part Overview

The L0103NEAP is a Logic - Sensitive Gate TRIAC rated for 800 V off-state voltage and 1 A on-state current in a Through Hole TO-92 package, manufactured by Littelfuse Inc. This component is classified as Active product status and is ROHS3 compliant. Alternative equivalent parts may be required due to inventory availability, supply chain considerations, or specific packaging preferences while maintaining identical electrical performance characteristics.

Key Parameters

Parameter	Value
Triac Type	Logic - Sensitive Gate
Voltage - Off State	800 V
Current - On State (It (RMS)) (Max)	1 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V
Current - Gate Trigger (Igt) (Max)	3 mA
Current - Hold (Ih) (Max)	7 mA
Operating Temperature Range	-40°C ~ 125°C (TJ)
Mounting Type	Through Hole
Package / Case	TO-226-3, TO-92-3 (TO-226AA) Formed Leads
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the L0103NEAP are classified based on strict electrical and mechanical parameter alignment:

MFR Recommended Substitute: Z0107NA 5AL2 (STMicroelectronics) This substitute maintains all critical electrical parameters: 800 V off-state voltage, 1 A on-state current, 1.3 V maximum gate trigger voltage, and -40°C to 125°C operating temperature range. The part is packaged in TO-92 configuration with Through Hole mounting. Differences in non-repetitive surge current (8A, 8.5A vs. 10A, 12A) and gate trigger current (5 mA vs. 3 mA maximum) fall within acceptable substitution tolerances for this product category. Packaging format is Cut Tape (CT) versus Tape & Box (TB).

Parametric Equivalent: Z0103NA 2AL2 (STMicroelectronics) This substitute provides exact electrical parameter matching for gate trigger current (3 mA maximum) and hold current (7 mA maximum), with identical 800 V, 1 A, and 1.3 V specifications. Non-repetitive surge current matches the recommended substitute (8A, 8.5A). Package designation is TO-92-3 with Through Hole mounting. Packaging format is Cut Tape (CT).

Parameter Comparison

Parameter	L0103NEAP (Littelfuse)	Z0107NA 5AL2 (STMicroelectronics)	Z0103NA 2AL2 (STMicroelectronics)
Triac Type	Logic - Sensitive Gate	Logic - Sensitive Gate	Logic - Sensitive Gate
Voltage - Off State	800 V	800 V	800 V
Current - On State (It (RMS)) (Max)	1 A	1 A	1 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V	1.3 V	1.3 V
Current - Gate Trigger (Igt) (Max)	3 mA	5 mA	3 mA
Current - Hold (Ih) (Max)	7 mA	10 mA	7 mA
Current - Non Rep. Surge 50, 60Hz (Itsm)	10A, 12A	8A, 8.5A	8A, 8.5A
Operating Temperature	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	TO-226-3, TO-92-3 (TO-226AA) Formed Leads	TO-226-3, TO-92-3 (TO-226AA)	TO-226-3, TO-92-3 (TO-226AA) Formed Leads
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and ROHS3 compliance, ensuring regulatory alignment with the original L0103NEAP. Both STMicroelectronics alternatives are REACH Unaffected and carry identical ECCN (EAR99) and HTSUS (8541.30.0080) classifications.

Z0103NA 2AL2 provides the closest electrical parameter match with identical gate trigger current (3 mA) and hold current (7 mA) specifications, making it the preferred parametric equivalent for applications with strict gate drive requirements.

Z0107NA 5AL2 is the manufacturer-recommended substitute, offering higher inventory availability and acceptable parameter variance within the Logic - Sensitive Gate TRIAC category. The increased gate trigger current (5 mA) and hold current (10 mA) remain within functional tolerances for standard gate drive circuits.

Frequently Asked Questions (FAQ)

Q: Can Z0107NA 5AL2 be used as a direct replacement for L0103NEAP? A: Yes. Both parts share identical off-state voltage (800 V), on-state current (1 A), gate trigger voltage (1.3 V), and operating temperature range (-40°C to 125°C). The gate trigger current specification increases from 3 mA to 5 mA maximum, which is acceptable for most gate drive implementations in this product category.

Q: What is the difference between Z0107NA 5AL2 and Z0103NA 2AL2? A: Z0103NA 2AL2 matches the original L0103NEAP gate trigger current (3 mA) and hold current (7 mA) exactly. Z0107NA 5AL2 has higher gate trigger current (5 mA) and hold current (10 mA) specifications. Both maintain all other critical electrical parameters. Selection depends on gate drive circuit design requirements.

Q: Are packaging differences significant between these parts? A: All three parts use Through Hole mounting in TO-92 package configuration. L0103NEAP is supplied in Tape & Box (TB) format, while both STMicroelectronics substitutes are supplied in Cut Tape (CT) format. This affects handling and assembly processes but not electrical performance or PCB compatibility.

Q: Do all parts meet the same compliance standards? A: Yes. L0103NEAP, Z0107NA 5AL2, and Z0103NA 2AL2 are all ROHS3 compliant, REACH Unaffected, and classified as EAR99 for export control purposes.

Q: What is the non-repetitive surge current difference? A: L0103NEAP is rated for 10A and 12A non-repetitive surge current at 50 and 60 Hz respectively. Both STMicroelectronics substitutes are rated for 8A and 8.5A. This parameter reflects transient overcurrent capability and should be evaluated against specific application surge requirements.

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