L201E3AP TRIAC Logic - Sensitive Gate Equivalent & Substitute Parts

Part Overview

The L201E3AP is a TRIAC Logic - Sensitive Gate thyristor rated for 200 V off-state voltage and 1 A on-state current in a Through Hole TO-92 package. This component is classified as Obsolete, making substitute parts necessary for new designs and ongoing production requirements. The part is ROHS3 compliant and suitable for applications requiring sensitive gate triggering in low-voltage AC switching circuits.

Substiute Parts

L201E3AP

Littelfuse Inc.In Stock: 1224L201E3AP Datasheet

Current PartRFQ

L401E3AP

Littelfuse Inc.In Stock: 1079L401E3AP Datasheet

UpgradeRFQ

L601E3AP

Littelfuse Inc.In Stock: 772L601E3AP Datasheet

UpgradeRFQ

Z0103MA 1AA2

STMicroelectronicsIn Stock: 90422Z0103MA 1AA2 Datasheet

MFR RecommendedRFQ

Z0103MA 2AL2

STMicroelectronicsIn Stock: 4865Z0103MA 2AL2 Datasheet

MFR RecommendedRFQ

Z0103MA 5AL2

STMicroelectronicsIn Stock: 8243Z0103MA 5AL2 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the L201E3AP is determined by the following critical parameters:

• Triac Type: Logic - Sensitive Gate
• Configuration: Single
• Mounting Type: Through Hole
• Package / Case: TO-92-3 (TO-226AA)
• Current - On State (It (RMS)) (Max): 1 A
• Voltage - Gate Trigger (Vgt) (Max): 1.3 V
• Current - Gate Trigger (Igt) (Max): 3 mA
• RoHS Status: ROHS3 Compliant

Substitute parts are grouped into two categories:

Upgrade Substitutes (Littelfuse Inc.): Parts L401E3AP and L601E3AP maintain identical gate trigger specifications and current ratings while offering higher off-state voltage ratings (400 V and 600 V respectively). These are direct upgrades suitable for applications requiring higher voltage tolerance.

Manufacturer Recommended Substitutes (STMicroelectronics Z0103 Series): Parts Z0103MA 1AA2, Z0103MA 2AL2, and Z0103MA 5AL2 are cross-manufacturer equivalents with identical off-state voltage (600 V), on-state current (1 A), and gate trigger specifications. These parts differ in packaging format and hold current specification (7 mA vs. 5 mA maximum).

Parameter Comparison

Engineering Selection Recommendations

For Direct Voltage Compatibility (200 V Applications): No direct equivalent exists at 200 V off-state voltage among active parts. The L201E3AP is obsolete with no active Littelfuse substitute at this voltage rating.

For Voltage Upgrade Path (400 V Applications): The L401E3AP provides an upgrade substitute with identical electrical characteristics except for doubled off-state voltage. This part is Active and ROHS3 compliant, suitable for applications tolerating higher voltage ratings.

For Voltage Upgrade Path (600 V Applications): The L601E3AP provides the highest voltage upgrade from Littelfuse Inc. with Active product status and ROHS3 compliance. The STMicroelectronics Z0103 series (Z0103MA 1AA2, Z0103MA 2AL2, Z0103MA 5AL2) offers cross-manufacturer equivalents at 600 V with identical gate trigger and on-state current specifications.

Compliance Considerations: All substitute parts maintain ROHS3 compliance. The STMicroelectronics Z0103 series has REACH Unaffected status. Operating temperature range differs between Littelfuse parts (-65°C to 125°C) and STMicroelectronics parts (-40°C to 125°C).

Frequently Asked Questions (FAQ)

Q: Can L401E3AP or L601E3AP be used as direct replacements for L201E3AP?

A: Yes, electrically. Both parts maintain identical gate trigger voltage (1.3 V max), gate trigger current (3 mA max), and on-state current (1 A max). The primary difference is higher off-state voltage rating. Applications designed for 200 V operation will function with these higher-rated parts. Verify circuit design does not depend on the specific 200 V rating.

Q: What is the difference between Littelfuse L601E3AP and STMicroelectronics Z0103MA variants?

A: Both maintain 600 V off-state voltage and 1 A on-state current with identical gate trigger specifications. Key differences are: (1) Current - Hold (Ih) maximum is 7 mA for Z0103 vs. 5 mA for L601E3AP; (2) Non-repetitive surge current is lower for Z0103 (8 A, 8.5 A vs. 16.7 A, 20 A); (3) Operating temperature minimum is -40°C for Z0103 vs. -65°C for L601E3AP; (4) Packaging options differ (Tape & Box for L601E3AP, Bulk/Cut Tape for Z0103 variants).

Q: Are Z0103MA 1AA2, Z0103MA 2AL2, and Z0103MA 5AL2 electrically identical?

A: Yes. All three parts are electrically identical with 600 V off-state voltage, 1 A on-state current, and identical gate trigger specifications. The part number suffix indicates packaging format: 1AA2 is Bulk packaging, 2AL2 is Cut Tape, and 5AL2 is Cut Tape. Select based on procurement and assembly requirements.

Q: What is the impact of the lower operating temperature minimum (-40°C vs. -65°C) for STMicroelectronics parts?

A: Applications requiring operation below -40°C must use Littelfuse parts (L201E3AP, L401E3AP, or L601E3AP). For applications with minimum operating temperature of -40°C or higher, STMicroelectronics Z0103 series parts are suitable.

Q: Why is the non-repetitive surge current lower for Z0103 parts?

A: This is a specified electrical characteristic difference between manufacturers. Applications requiring surge current handling above 8.5 A must use Littelfuse parts. For applications within 8.5 A surge current limits, Z0103 parts are suitable.

Q: Can I use these parts interchangeably in existing designs?

A: Substitution is valid when: (1) circuit voltage rating is compatible with the substitute part's off-state voltage; (2) operating temperature range includes the substitute part's minimum temperature; (3) surge current requirements do not exceed the substitute part's rating; (4) hold current specification of 7 mA (Z0103) vs. 5 mA (Littelfuse) is acceptable for the application.