L201E3RP TRIAC Logic - Sensitive Gate 200V 1A TO-92 Equivalent & Substitute Parts

Part Overview

The L201E3RP is a Littelfuse TRIAC Logic - Sensitive Gate thyristor rated for 200V off-state voltage and 1A on-state current in a TO-92 through-hole package. This part is classified as obsolete. Equivalent and substitute parts are available from both Littelfuse and STMicroelectronics with enhanced voltage ratings and active product status, providing direct functional replacement with improved availability and extended lifecycle support.

Substiute Parts

L201E3RP

Littelfuse Inc.In Stock: 1167L201E3RP Datasheet

Current PartRFQ

L401E3RP

Littelfuse Inc.In Stock: 780L401E3RP Datasheet

UpgradeRFQ

L601E3RP

Littelfuse Inc.In Stock: 900L601E3RP 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 L201E3RP is determined by the following critical parameters:

Mandatory Compatibility Criteria:

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

Voltage Rating Consideration: The L201E3RP operates at 200V off-state voltage. Substitute parts with equal or higher voltage ratings (400V, 600V) are electrically compatible and provide enhanced overvoltage margin. Parts with lower voltage ratings are not suitable.

Substitute Categories:

Littelfuse Upgrades (Active Status):

• L401E3RP: 400V rating, maintains all other electrical parameters
• L601E3RP: 600V rating, maintains all other electrical parameters

STMicroelectronics Equivalents (Manufacturer Recommended, Active Status):

• Z0103MA 1AA2, Z0103MA 2AL2, Z0103MA 5AL2: 600V rating, Logic - Sensitive Gate configuration

All substitute parts maintain the TO-92-3 package, through-hole mounting, and 1A on-state current specification required for direct replacement.

Parameter Comparison

Engineering Selection Recommendations

For Littelfuse Continuity: L401E3RP and L601E3RP provide direct manufacturer upgrades with active product status. Both maintain the original electrical gate trigger characteristics (Vgt 1.3V, Igt 3mA) and on-state current (1A). The L401E3RP offers 400V rating for applications with moderate overvoltage margin, while L601E3RP provides 600V rating for enhanced voltage headroom. Both are ROHS3 compliant and support the full -65°C to 125°C operating range.

For Multi-Source Strategy: STMicroelectronics Z0103MA series (1AA2, 2AL2, 5AL2) provides manufacturer-recommended equivalents with 600V rating and active product status. These parts maintain gate trigger specifications and 1A on-state current. Operating temperature range is -40°C to 125°C, which covers standard industrial applications. Current - Hold (Ih) specification is 7mA versus 5mA on the original part, representing a minor increase in holding current that does not affect circuit compatibility for standard gate-drive applications.

Compliance and Availability: All substitute parts are ROHS3 compliant and carry active product status, ensuring long-term availability and supply chain stability compared to the obsolete L201E3RP.

Frequently Asked Questions (FAQ)

Q: Can L401E3RP or L601E3RP directly replace L201E3RP in existing designs?

A: Yes. Both parts maintain identical gate trigger voltage (1.3V), gate trigger current (3mA), and on-state current (1A) specifications. The higher voltage ratings (400V and 600V respectively) are backward compatible with 200V applications and provide additional overvoltage protection margin.

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

A: Littelfuse L401E3RP and L601E3RP are direct manufacturer upgrades with identical operating temperature range (-65°C to 125°C). STMicroelectronics Z0103MA series parts operate from -40°C to 125°C and have a slightly higher hold current specification (7mA versus 5mA). Both maintain the critical gate trigger parameters and are electrically compatible.

Q: Are all substitute parts available in TO-92-3 package?

A: Yes. All listed substitute parts use the TO-92-3 (TO-226AA) through-hole package, ensuring mechanical and electrical compatibility with existing PCB layouts and socket designs.

Q: Why do STMicroelectronics parts have different hold current (Ih) specifications?

A: The Z0103MA series specifies Ih Max at 7mA compared to 5mA for the original L201E3RP. This represents a minor increase in holding current and does not affect circuit compatibility for standard gate-drive applications where gate current exceeds the hold current threshold during normal operation.

Q: What packaging options are available for substitute parts?

A: Littelfuse L401E3RP and L601E3RP are supplied in Tape & Reel (TR) packaging. STMicroelectronics Z0103MA parts are available in Bulk (1AA2), Cut Tape (2AL2, 5AL2) formats, providing flexibility for different procurement and assembly requirements.

Q: Are all substitute parts RoHS compliant?

A: Yes. All substitute parts carry ROHS3 compliance certification, meeting environmental and regulatory requirements equivalent to the original L201E3RP.