L0109NERP TRIAC Equivalent & Substitute Parts

Part Overview

The L0109NERP is a Logic - Sensitive Gate TRIAC manufactured by Littelfuse Inc., rated for 800 V off-state voltage and 1 A on-state current in a Through Hole TO-92 package. This component is Active in product status and widely used in AC switching and control applications requiring sensitive gate triggering. Equivalent and substitute parts are identified based on matching electrical characteristics and package compatibility to support design flexibility and supply chain continuity.

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)	10 mA
Current - Hold (Ih) (Max)	10 mA
Operating Temperature	-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 L0109NERP are qualified based on the following criteria:

Triac Type: Logic - Sensitive Gate configuration
Voltage Rating: 800 V off-state voltage
Current Rating: 1 A on-state current (It (RMS)) maximum
Gate Trigger Voltage: 1.3 V maximum (Vgt)
Package Compatibility: TO-92 or TO-92-3 Through Hole configuration
Operating Temperature Range: -40°C to 125°C junction temperature
Compliance: ROHS3 Compliant, REACH Unaffected

The substitute parts Z0103NA 2AL2, Z0107NA 5AL2, and Z0109NA 2AL2 (all STMicroelectronics) meet these core electrical and mechanical requirements. Variations in gate trigger current (Igt) and hold current (Ih) within the specified maximums do not prevent substitution, as these parameters remain within acceptable design margins for sensitive gate TRIAC applications.

Parameter Comparison

Parameter	L0109NERP (Littelfuse)	Z0103NA 2AL2 (STMicroelectronics)	Z0107NA 5AL2 (STMicroelectronics)	Z0109NA 2AL2 (STMicroelectronics)
Triac Type	Logic - Sensitive Gate	Logic - Sensitive Gate	Logic - Sensitive Gate	Logic - Sensitive Gate
Voltage - Off State	800 V	800 V	800 V	800 V
Current - On State (It (RMS)) (Max)	1 A	1 A	1 A	1 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V	1.3 V	1.3 V	1.3 V
Current - Gate Trigger (Igt) (Max)	10 mA	3 mA	5 mA	10 mA
Current - Hold (Ih) (Max)	10 mA	7 mA	10 mA	10 mA
Operating Temperature	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)
Mounting Type	Through Hole	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) 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	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

All substitute parts maintain Active product status and full ROHS3 compliance with REACH Unaffected designation, ensuring regulatory alignment with the original L0109NERP component. Selection among Z0103NA 2AL2, Z0107NA 5AL2, and Z0109NA 2AL2 depends on gate trigger current requirements within the application circuit. Z0109NA 2AL2 provides parametric equivalence with identical Igt and Ih maximums to the original part. Z0103NA 2AL2 and Z0107NA 5AL2 offer lower gate trigger current specifications, which may reduce gate drive circuit loading in sensitive applications while remaining within the 1.3 V gate trigger voltage specification.

Frequently Asked Questions (FAQ)

Q: Can Z0103NA 2AL2, Z0107NA 5AL2, and Z0109NA 2AL2 be used interchangeably with L0109NERP?

A: Yes, within the constraints of gate trigger current requirements. All three substitute parts share identical voltage ratings (800 V), current ratings (1 A), gate trigger voltage (1.3 V maximum), operating temperature range (-40°C to 125°C), and Through Hole TO-92 package configuration. Differences in gate trigger current (Igt) and hold current (Ih) are within acceptable design margins for sensitive gate TRIAC applications.

Q: What is the difference between Z0109NA 2AL2 and the original L0109NERP?

A: Z0109NA 2AL2 is manufactured by STMicroelectronics rather than Littelfuse Inc., but maintains identical electrical specifications and package configuration. Both are ROHS3 Compliant and REACH Unaffected.

Q: Does packaging differ between the main part and substitutes?

A: The main part L0109NERP is supplied in Tape & Reel (TR) packaging. Substitute parts Z0103NA 2AL2, Z0107NA 5AL2, and Z0109NA 2AL2 are supplied in Cut Tape (CT) packaging. Both packaging formats contain identical component specifications and are suitable for Through Hole assembly.

Q: Are there any temperature or compliance restrictions for these substitutes?

A: No. All parts operate across the identical temperature range (-40°C to 125°C junction temperature) and maintain ROHS3 Compliant and REACH Unaffected status.

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