L2004L6 Equivalent & Substitute Parts

Part Overview

The L2004L6 is a Logic-Sensitive Gate TRIAC manufactured by Littelfuse Inc., rated for 200 V off-state voltage and 4 A on-state current in a TO-220 Isolated Tab package. This component is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement continuity. The part operates across a temperature range of -40°C to 110°C and is RoHS3 compliant.

Substiute Parts

L2004L6

Littelfuse Inc.In Stock: 1089L2004L6 Datasheet

Current PartRFQ

BT136X-600D,127

WeEn SemiconductorsIn Stock: 3470BT136X-600D,127 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the L2004L6 is determined by the following critical parameters:

• Triac Type: Must be Logic-Sensitive Gate configuration
• Current Rating: On-state current must be rated at or above 4 A (RMS)
• Gate Trigger Characteristics: Voltage and current thresholds must be compatible with existing gate drive circuits
• Hold Current: Must not exceed application requirements
• Mounting and Package: Through-hole TO-220 family packages are mechanically compatible
• Temperature Range: Operating temperature must support the application environment
• Compliance: RoHS status must meet procurement requirements

The BT136X-600D,127 qualifies as a substitute based on matching configuration, current rating, gate trigger parameters, and package compatibility. The higher off-state voltage rating (600 V vs. 200 V) provides additional design margin and does not compromise functionality in 200 V applications.

Parameter Comparison

Engineering Selection Recommendations

The BT136X-600D,127 is an active product with current manufacturing support and established supply chain availability. Selection of this substitute is based on:

• Matching Logic-Sensitive Gate TRIAC configuration
• Equivalent 4 A on-state current rating
• Compatible gate trigger voltage and current specifications
• Identical hold current maximum
• Through-hole TO-220 package compatibility
• RoHS compliance status meeting procurement standards
• Active product status ensuring long-term availability

The higher off-state voltage rating (600 V) does not introduce incompatibility in applications designed for 200 V operation and provides additional voltage margin.

Frequently Asked Questions (FAQ)

Q: Can the BT136X-600D,127 be used as a direct replacement for the L2004L6?

A: Yes. Both devices are Logic-Sensitive Gate TRIACs with identical on-state current ratings (4 A), matching gate trigger specifications, and compatible TO-220 package configurations. The higher voltage rating of the substitute does not prevent operation in 200 V applications.

Q: What is the significance of the higher 600 V off-state voltage rating on the substitute?

A: The 600 V rating indicates the maximum voltage the device can withstand in the off state. In a 200 V application, this provides additional design margin and does not affect circuit operation or performance.

Q: Are the gate trigger parameters compatible between the two parts?

A: Yes. Both devices specify a maximum gate trigger voltage of 1.3 V to 1.5 V and a maximum gate trigger current of 5 mA. These parameters are compatible with existing gate drive circuits designed for the L2004L6.

Q: What are the package differences between L2004L6 and BT136X-600D,127?

A: Both use TO-220-3 Isolated Tab packages. The L2004L6 uses TO-220 Isolated Tab, while the BT136X-600D,127 uses TO-220F (Full Pack, Isolated Tab). Both are mechanically compatible in standard TO-220 footprints.

Q: Is the substitute part RoHS compliant?

A: Yes. The BT136X-600D,127 is RoHS compliant and meets current environmental and procurement standards.

Q: What is the maximum operating temperature for the substitute?

A: The BT136X-600D,127 is rated to 125°C junction temperature, which exceeds the L2004L6 specification of 110°C, providing additional thermal margin in applications.