L2X5RP TRIAC Equivalent & Substitute Parts

Part Overview

The L2X5RP is a Logic-Sensitive Gate TRIAC manufactured by Littelfuse Inc., rated for 200V off-state voltage with 800mA on-state current in a surface mount DO-214 package. This component is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Substitute parts maintain identical electrical characteristics and mechanical compatibility while offering active product status and extended availability.

Substiute Parts

L2X5RP

Littelfuse Inc.In Stock: 781L2X5RP Datasheet

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L4X5RP

Littelfuse Inc.In Stock: 799L4X5RP Datasheet

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L6X5RP

Littelfuse Inc.In Stock: 700L6X5RP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the L2X5RP are qualified based on the following criteria:

Mandatory Compatibility Parameters:

• Triac Type: Logic - Sensitive Gate (identical)
• Current - On State (It RMS) Max: 800mA (identical)
• Voltage - Gate Trigger (Vgt) Max: 1.3V (identical)
• Current - Gate Trigger (Igt) Max: 5mA (identical)
• Current - Hold (Ih) Max: 10mA (identical)
• Operating Temperature Range: -40°C to 110°C (identical)
• Package / Case: DO-214AA, SMB (3 Leads) (identical)
• Mounting Type: Surface Mount (identical)
• RoHS Status: ROHS3 Compliant (identical)
• Moisture Sensitivity Level: 1 (Unlimited) (identical)

Variable Parameter (Allows Substitution):

• Voltage - Off State: The L4X5RP (400V) and L6X5RP (600V) feature higher voltage ratings than the L2X5RP (200V). Higher voltage-rated TRIACs are electrically compatible in applications designed for lower voltages, as they operate within the same gate trigger and current specifications.

Parameter Comparison

Engineering Selection Recommendations

L4X5RP (400V TRIAC): This substitute offers active product status with 400V off-state voltage rating. It maintains all electrical and thermal specifications of the L2X5RP while providing higher voltage margin. Selection is appropriate for applications operating at or below 200V where component availability and long-term supply continuity are required.

L6X5RP (600V TRIAC): This substitute provides the highest voltage rating at 600V off-state voltage with active product status. It maintains identical gate trigger characteristics, on-state current, and thermal performance. Selection is appropriate for applications requiring maximum voltage headroom or where 600V-rated components are preferred for design standardization.

Both substitutes are ROHS3 compliant and carry MSL 1 (Unlimited) moisture sensitivity rating, matching the original part's environmental and regulatory compliance profile.

Frequently Asked Questions (FAQ)

Q: Can L4X5RP or L6X5RP be used as direct replacements for L2X5RP in existing designs?

A: Yes. Both substitutes maintain identical gate trigger voltage (1.3V max), gate trigger current (5mA max), on-state current (800mA max), hold current (10mA max), and operating temperature range (-40°C to 110°C). The higher voltage ratings (400V and 600V respectively) do not affect circuit operation in applications designed for 200V operation.

Q: What is the primary difference between the three parts?

A: The off-state voltage rating is the only electrical parameter that differs. L2X5RP is rated 200V, L4X5RP is rated 400V, and L6X5RP is rated 600V. All other electrical and mechanical specifications are identical.

Q: Are there packaging differences between these parts?

A: No. All three parts use identical DO-214AA (SMB, 3 Leads) surface mount packaging and are compatible with the same PCB footprints and assembly processes.

Q: Why is L2X5RP classified as obsolete?

A: The L2X5RP has reached end-of-life status. L4X5RP and L6X5RP remain in active production and are the recommended alternatives for new designs and production continuity.

Q: Are all three parts RoHS compliant?

A: Yes. L2X5RP, L4X5RP, and L6X5RP are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: Which substitute should be selected for new designs?

A: Selection between L4X5RP and L6X5RP depends on application voltage requirements. For applications operating at or below 200V, either part is suitable. L4X5RP provides 400V margin, while L6X5RP provides 600V margin. Both are active products with equivalent availability and supply continuity.