L4008R6TP Equivalent & Substitute Parts

Part Overview

The L4008R6TP is a Logic - Sensitive Gate TRIAC manufactured by Littelfuse Inc., rated for 400 V off-state voltage and 8 A on-state current in a Through Hole TO-220AB package. This component is Active in product status and RoHS3 compliant. Substitute parts are identified when equivalent electrical ratings and mechanical compatibility are maintained across the allowed parameter set for TRIAC thyristors.

Substiute Parts

L4008R6TP

Littelfuse Inc.In Stock: 765L4008R6TP Datasheet

Current PartRFQ

BTA08-400CRG

STMicroelectronicsIn Stock: 3444BTA08-400CRG Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the L4008R6TP is determined by the following criteria:

• Voltage - Off State: 400 V (exact match required)
• Current - On State (It (RMS)) (Max): 8 A (exact match required)
• Package / Case: TO-220-3 (mechanical compatibility required)
• Mounting Type: Through Hole (mechanical compatibility required)
• Voltage - Gate Trigger (Vgt) (Max): ≤ 1.3 V (equal or lower acceptable)
• Current - Gate Trigger (Igt) (Max): ≤ 10 mA (equal or lower acceptable)
• Current - Hold (Ih) (Max): ≤ 20 mA (equal or lower acceptable)
• Operating Temperature Range: must encompass or match the application requirement

The BTA08-400CRG meets these substitution criteria with matching voltage and current ratings, identical package configuration, and compatible gate trigger specifications.

Parameter Comparison

Engineering Selection Recommendations

Both the L4008R6TP and BTA08-400CRG are Active product status components with ROHS3 compliance and REACH Unaffected status. The BTA08-400CRG provides an extended operating temperature range (-40°C ~ 125°C versus -40°C ~ 110°C), which offers additional thermal margin for applications operating near the upper temperature limit. Both components are certified for the same regulatory classifications (ECCN: EAR99; HTSUS: 8541.30.0080). Selection between these parts depends on application-specific temperature requirements and gate drive circuit design considerations related to the higher gate trigger current specification of the BTA08-400CRG.

Frequently Asked Questions (FAQ)

Q: Can the BTA08-400CRG directly replace the L4008R6TP in existing designs?

A: Yes, for applications operating within -40°C to 110°C. The BTA08-400CRG has identical voltage and current ratings, matching package configuration (TO-220-3), and compatible gate trigger voltage. Gate trigger current is higher (25 mA vs. 10 mA), which may require gate drive circuit verification if current-limited gate sources are used.

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

A: The L4008R6TP is specified as Logic - Sensitive Gate type with lower gate trigger current (10 mA maximum), while the BTA08-400CRG is Standard type with higher gate trigger current (25 mA maximum). Both are functionally compatible at the specified voltage and current ratings.

Q: Are both parts suitable for high-temperature applications?

A: The BTA08-400CRG supports operation to 125°C junction temperature, providing 15°C additional margin compared to the L4008R6TP (110°C maximum). Selection depends on the specific thermal environment of the application.

Q: Do both parts have identical surge current ratings?

A: No. The L4008R6TP is rated for 65A/85A (50/60Hz) non-repetitive surge current, while the BTA08-400CRG is rated for 80A/84A. Both exceed the 8 A continuous rating with adequate surge margin for typical applications.

Q: Are there any compliance or certification differences?

A: Both parts are ROHS3 compliant, REACH Unaffected, and classified under the same ECCN and HTSUS codes. No compliance differences exist between the two components.