Littelfuse L201E5 TRIAC Equivalent & Substitute Parts

Part Overview

The Littelfuse L201E5 is a Logic-Sensitive Gate TRIAC rated for 200 V off-state voltage with 1 A on-state current in a Through Hole TO-92 package. This component is classified as Obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and production continuity. Substitute parts must maintain compatibility across gate trigger characteristics, thermal operating range, and package form factor while potentially offering enhanced voltage ratings or active product status.

Key Parameters

Parameter	Value
Triac Type	Logic - Sensitive Gate
Voltage - Off State	200 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	-65°C ~ 125°C (TJ)
Mounting Type	Through Hole
Package / Case	TO-226-3, TO-92-3 (TO-226AA)
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the L201E5 are qualified based on the following criteria:

Gate Trigger Compatibility: All substitutes maintain Voltage - Gate Trigger (Vgt) (Max) of 1.3 V and Current - Gate Trigger (Igt) (Max) of 5 mA, ensuring direct gate drive compatibility with existing circuit designs.

Current Rating: All substitutes maintain Current - On State (It (RMS)) (Max) of 1 A, preserving load-handling capability.

Hold Current: All substitutes maintain Current - Hold (Ih) (Max) of 10 mA, ensuring latching behavior consistency.

Package Form Factor: All substitutes use Through Hole mounting in TO-92-3 package configuration, enabling direct PCB footprint compatibility.

Voltage Rating Flexibility: Substitute parts are offered at 400 V and 600 V off-state ratings. These higher ratings provide backward compatibility with the 200 V application while offering design margin for circuits operating near voltage limits.

Thermal Range: The L401E5 and L601E5 maintain the full -65°C ~ 125°C operating range. The Z0107MA 1AA2 operates at -40°C ~ 125°C, which is acceptable for most industrial applications but represents a reduced low-temperature specification.

Parameter Comparison

Parameter	L201E5	L401E5	L601E5	Z0107MA 1AA2
Manufacturer	Littelfuse	Littelfuse Inc.	Littelfuse Inc.	STMicroelectronics
Triac Type	Logic - Sensitive Gate	Logic - Sensitive Gate	Logic - Sensitive Gate	Logic - Sensitive Gate
Voltage - Off State	200 V	400 V	600 V	600 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)	5 mA	5 mA	5 mA	5 mA
Current - Hold (Ih) (Max)	10 mA	10 mA	10 mA	10 mA
Operating Temperature	-65°C ~ 125°C	-65°C ~ 125°C	-65°C ~ 125°C	-40°C ~ 125°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	TO-92-3	TO-92-3	TO-92-3	TO-92-3
Product Status	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Littelfuse L401E5: This part is recommended as the primary upgrade path for L201E5 applications. It maintains full Littelfuse product lineage, preserves the complete -65°C ~ 125°C thermal specification, and carries Active product status. The 400 V off-state rating provides increased design margin while maintaining identical gate trigger and current specifications. ROHS3 compliance is confirmed.

Littelfuse L601E5: This part is recommended for applications requiring maximum voltage margin or where 600 V rated components are preferred for system standardization. It maintains full thermal specification and Active product status within the Littelfuse product family. ROHS3 compliance is confirmed.

STMicroelectronics Z0107MA 1AA2: This part is recommended as a cross-manufacturer alternative where Littelfuse supply constraints exist. It provides 600 V off-state rating and maintains gate trigger compatibility. The operating temperature range is -40°C ~ 125°C, which is suitable for applications not requiring extended low-temperature operation below -40°C. ROHS3 compliance and REACH Unaffected status are confirmed. Moisture Sensitivity Level is rated as 1 (Unlimited).

Frequently Asked Questions (FAQ)

Q: Can the L401E5 or L601E5 be used as direct replacements for the L201E5?

A: Yes. Both parts maintain identical gate trigger voltage (1.3 V max), gate trigger current (5 mA max), on-state current (1 A max), and hold current (10 mA max) specifications. The higher voltage ratings (400 V and 600 V respectively) are backward compatible with 200 V applications. Package form factor and Through Hole mounting are identical.

Q: What is the difference between the Littelfuse and STMicroelectronics options?

A: The Littelfuse L401E5 and L601E5 maintain the full -65°C ~ 125°C operating temperature range. The STMicroelectronics Z0107MA 1AA2 operates at -40°C ~ 125°C. All three parts maintain identical gate trigger and current specifications. Selection depends on thermal requirements and supply availability.

Q: Are there any package compatibility concerns?

A: No. All substitute parts use the TO-92-3 (TO-226-3) Through Hole package, enabling direct PCB footprint compatibility without layout modifications.

Q: What compliance certifications apply to these parts?

A: All parts are ROHS3 Compliant. The STMicroelectronics Z0107MA 1AA2 carries additional REACH Unaffected status. Moisture Sensitivity Level for the Z0107MA 1AA2 is rated as 1 (Unlimited).

Q: Can the Z0107MA 1AA2 be used in applications requiring -65°C operation?

A: No. The Z0107MA 1AA2 is rated for -40°C ~ 125°C operation. For applications requiring -65°C minimum temperature, use the Littelfuse L401E5 or L601E5.

Q: What is the non-repetitive surge current rating for each part?

A: The L201E5, L401E5, and L601E5 are rated for 16.7 A (50 Hz) and 20 A (60 Hz) non-repetitive surge current. The Z0107MA 1AA2 is rated for 8 A (50 Hz) and 8.5 A (60 Hz) non-repetitive surge current, representing a reduced surge capability.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message