L0107ME TRIAC Equivalent & Substitute Parts

Part Overview

The L0107ME is a Logic-Sensitive Gate TRIAC manufactured by Littelfuse Inc., rated for 600 V off-state voltage and 1 A on-state current in a Through Hole TO-92 package. This component is classified as Active product status with full RoHS3 compliance and unlimited moisture sensitivity level. Equivalent and substitute parts are identified based on matching electrical specifications, package compatibility, and operational parameters to ensure direct functional replacement in circuit applications.

Key Parameters

Parameter	L0107ME
Manufacturer	Littelfuse Inc.
Triac Type	Logic - Sensitive Gate
Voltage - Off State	600 V
Current - On State (It RMS Max)	1 A
Voltage - Gate Trigger (Vgt Max)	1.3 V
Current - Gate Trigger (Igt Max)	5 mA
Current - Hold (Ih Max)	10 mA
Operating Temperature	-40°C to 125°C (TJ)
Package / Case	TO-226-3, TO-92-3 (TO-226AA)
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following critical parameters:

Voltage - Off State: 600 V (exact match required)
Current - On State: 1 A or higher (equal or greater capacity acceptable)
Triac Type: Logic-Sensitive Gate preferred; Standard type acceptable with higher gate trigger current tolerance
Package / Case: TO-92 or TO-92-3 (Through Hole compatible)
Operating Temperature Range: -40°C to 125°C minimum
Gate Trigger Voltage (Vgt): 1.3 V maximum
RoHS3 Compliance: Required for regulatory alignment

Substitute parts are categorized as MFR Recommended (manufacturer-endorsed alternatives) and Parametric Equivalents (matching all critical electrical specifications). The SST131U-600D represents a Standard TRIAC variant with higher gate trigger current specifications. STMicroelectronics Z-series parts (Z0103MA, Z0107MA, Z0109MA, Z00607MA) are Logic-Sensitive Gate TRIACs with identical or superior electrical ratings.

Parameter Comparison

Parameter	L0107ME	SST131U-600D	Z0103MA 1AA2	Z0103MA 2AL2	Z0103MA 5AL2	Z0107MA 1AA2	Z0109MA 1AA2	Z0109MA 2AL2	Z0109MA 5AL2	Z00607MA 5BL2
Manufacturer	Littelfuse	SMC Diode	STMicro	STMicro	STMicro	STMicro	STMicro	STMicro	STMicro	STMicro
Triac Type	Logic - Sensitive Gate	Standard	Logic - Sensitive Gate	Logic - Sensitive Gate	Logic - Sensitive Gate	Logic - Sensitive Gate	Logic - Sensitive Gate	Logic - Sensitive Gate	Logic - Sensitive Gate	Logic - Sensitive Gate
Voltage - Off State	600 V	600 V	600 V	600 V	600 V	600 V	600 V	600 V	600 V	600 V
Current - On State (It RMS Max)	1 A	1 A	1 A	1 A	1 A	1 A	1 A	1 A	1 A	800 mA
Voltage - Gate Trigger (Vgt Max)	1.3 V	1.3 V	1.3 V	1.3 V	1.3 V	1.3 V	1.3 V	1.3 V	1.3 V	1.3 V
Current - Gate Trigger (Igt Max)	5 mA	10 mA	3 mA	3 mA	3 mA	5 mA	10 mA	10 mA	10 mA	5 mA
Current - Hold (Ih Max)	10 mA	7 mA	7 mA	7 mA	7 mA	10 mA	10 mA	10 mA	10 mA	5 mA
Operating Temperature	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C	-40°C to 125°C	-40°C to 110°C
Package / Case	TO-92-3	TO-92-3	TO-92-3	TO-92-3	TO-92-3	TO-92-3	TO-92-3	TO-92	TO-92	TO-92-3
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts maintain Active product status and ROHS3 compliance, ensuring regulatory alignment with the L0107ME. Selection between MFR Recommended and Parametric Equivalent categories depends on application-specific gate trigger current requirements and hold current specifications.

For applications requiring gate trigger current of 5 mA or lower, Z0107MA 1AA2 and Z00607MA 5BL2 provide direct parametric equivalence. Z0103MA variants (1AA2, 2AL2, 5AL2) offer reduced gate trigger current (3 mA) with identical on-state current and voltage ratings, suitable for low-power gate drive circuits.

Z0109MA series (1AA2, 2AL2, 5AL2) maintain 10 mA gate trigger current matching SST131U-600D, providing compatibility with standard gate drive implementations. SST131U-600D, as a Standard TRIAC variant, exhibits higher gate trigger current (10 mA) and lower hold current (7 mA) compared to the Logic-Sensitive Gate classification of the L0107ME.

Z00607MA 5BL2 operates at reduced on-state current (800 mA) and lower maximum operating temperature (110°C), limiting its application to circuits with lower current demands and restricted thermal environments.

Frequently Asked Questions (FAQ)

Q: Can Z00607MA 5BL2 directly replace L0107ME in all applications?

A: Z00607MA 5BL2 is not a direct replacement for all applications. While it matches the 600 V voltage rating and 1.3 V gate trigger voltage, its on-state current rating is 800 mA compared to L0107ME's 1 A. Additionally, its maximum operating temperature is 110°C versus L0107ME's 125°C. Use only in circuits with current demands below 800 mA and operating temperatures below 110°C.

Q: What is the difference between Logic-Sensitive Gate and Standard TRIAC types?

A: Logic-Sensitive Gate TRIACs (L0107ME, Z0103MA, Z0107MA, Z0109MA, Z00607MA) are optimized for low gate trigger current applications, typically 3-10 mA. Standard TRIACs (SST131U-600D) require higher gate trigger current (10 mA) but may offer different surge current ratings. Both types are functionally compatible when gate drive circuits are designed accordingly.

Q: Are packaging differences between TO-92 and TO-92-3 significant for substitution?

A: TO-92 and TO-92-3 are both Through Hole packages with identical pin configurations and mechanical footprints. The primary difference is lead forming specification. Both are mechanically and electrically compatible for PCB mounting and circuit operation.

Q: Which substitute part offers the best parametric match to L0107ME?

A: Z0107MA 1AA2 provides the closest parametric match, matching all critical specifications: 600 V off-state voltage, 1 A on-state current, 1.3 V gate trigger voltage, 5 mA gate trigger current, and 10 mA hold current. Operating temperature range (-40°C to 125°C) and RoHS3 compliance are identical.

Q: Can I use Z0103MA variants if my circuit requires lower gate trigger current?

A: Yes. Z0103MA variants (1AA2, 2AL2, 5AL2) feature 3 mA gate trigger current, lower than L0107ME's 5 mA specification. This is acceptable for applications where gate drive circuits can accommodate reduced trigger current. All other electrical parameters match or exceed L0107ME ratings.

Q: What inventory considerations apply when selecting substitutes?

A: Inventory levels vary significantly across substitute options. Z0103MA 1AA2 offers 90,400 pcs, Z0109MA 2AL2 offers 19,200 pcs, and Z0107MA 1AA2 offers 6,200 pcs. SST131U-600D (SMC Diode Solutions) provides 2,699 pcs. Availability should be evaluated against project timeline and volume requirements.

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