L2004V5 Equivalent & Substitute Parts

Part Overview

The L2004V5 is a TRIAC Logic - Sensitive Gate thyristor manufactured by Littelfuse Inc., rated for 200 V off-state voltage and 4 A on-state current in a TO-251 through-hole package. This component is discontinued at DiGi Electronics, making identification of equivalent substitute parts essential for ongoing design support and procurement.

Substiute Parts

L2004V5

Littelfuse Inc.In Stock: 929L2004V5 Datasheet

Current PartRFQ

BT134-600D,127

WeEn SemiconductorsIn Stock: 1000306BT134-600D,127 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the L2004V5 is determined by the following critical parameters:

• Triac Type: Logic - Sensitive Gate configuration must be maintained
• Current Rating: On-state current of 4 A (RMS) maximum
• Gate Trigger Characteristics: Vgt (Max) and Igt (Max) within acceptable ranges for sensitive gate operation
• Configuration: Single TRIAC per package
• Compliance: ROHS3 compliance and EAR99 classification
• Mounting: Through-hole technology compatibility

The BT134-600D,127 qualifies as a substitute based on matching triac type, current rating, gate trigger specifications, configuration, and compliance certifications. The higher off-state voltage rating (600 V vs. 200 V) provides additional design margin and does not compromise functionality in applications rated for 200 V operation.

Parameter Comparison

Engineering Selection Recommendations

The BT134-600D,127 is an active product with established supply availability (1,000,200 pcs in stock), whereas the L2004V5 is discontinued. Both components meet ROHS3 compliance and EAR99 classification requirements.

Selection of the BT134-600D,127 as a substitute is supported by:

• Identical on-state current rating (4 A RMS)
• Matching gate trigger specifications (Vgt Max 1.5 V, Igt Max 5 mA)
• Identical hold current specification (10 mA)
• Higher off-state voltage rating provides design margin for 200 V applications
• Extended maximum operating temperature (125°C vs. 110°C)
• Active product status with continuous supply chain support

Package differences (TO-251 vs. SOT-82) require PCB layout adjustment but do not affect electrical compatibility.

Frequently Asked Questions (FAQ)

Q: Can the BT134-600D,127 directly replace the L2004V5 in existing designs?

A: Electrical substitution is valid based on matching current ratings, gate trigger characteristics, and triac type. PCB layout modification is required due to package differences (TO-251 vs. SOT-82 through-hole packages).

Q: Why is the BT134-600D,127 rated for 600 V when the L2004V5 is 200 V?

A: The higher voltage rating does not affect operation in 200 V applications. The component will function identically at lower voltages with additional voltage margin. This is a standard substitution practice in thyristor selection.

Q: Are gate trigger specifications compatible between these parts?

A: Yes. Both components specify Igt (Max) of 5 mA and Ih (Max) of 10 mA. The Vgt (Max) difference (1.3 V vs. 1.5 V) is within acceptable sensitive gate operation parameters and does not compromise gate drive circuit compatibility.

Q: What is the impact of the operating temperature difference?

A: The BT134-600D,127 supports operation to 125°C junction temperature compared to 110°C for the L2004V5. This provides additional thermal margin and does not restrict use in applications designed for the original part.

Q: Are both components RoHS compliant?

A: Yes. Both the L2004V5 and BT134-600D,127 are ROHS3 compliant and classified as EAR99 for export purposes.