L6004R8 Equivalent & Substitute Parts

Part Overview

The L6004R8 is a Logic - Sensitive Gate TRIAC rated for 600 V off-state voltage and 4 A on-state current (RMS), housed in a TO-220-3 through-hole package. Manufactured by Littelfuse, this component is discontinued at DiGi Electronics. Due to its discontinued status, identifying equivalent substitute parts with matching electrical and mechanical specifications is essential for design continuity and procurement planning.

Key Parameters

Parameter	Value
Triac Type	Logic - Sensitive Gate
Voltage - Off State	600 V
Current - On State (It (RMS)) (Max)	4 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V
Current - Gate Trigger (Igt) (Max)	10 mA
Current - Hold (Ih) (Max)	15 mA
Configuration	Single
Mounting Type	Through Hole
Package / Case	TO-220-3
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the L6004R8 is determined by strict equivalence across the following electrical and mechanical parameters:

Triac Type: Logic - Sensitive Gate configuration
Voltage Rating: 600 V off-state voltage
Current Rating: 4 A on-state current (RMS)
Gate Trigger Specifications: Vgt (Max) 1.3 V and Igt (Max) 10 mA
Hold Current: 15 mA maximum
Package: TO-220-3 through-hole configuration
Compliance: ROHS3 Compliant

The BTB04-600SL meets all these criteria and qualifies as a direct substitute.

Parameter Comparison

Parameter	L6004R8 (Littelfuse)	BTB04-600SL (STMicroelectronics)
Triac Type	Logic - Sensitive Gate	Logic - Sensitive Gate
Voltage - Off State	600 V	600 V
Current - On State (It (RMS)) (Max)	4 A	4 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V	1.3 V
Current - Gate Trigger (Igt) (Max)	10 mA	10 mA
Current - Hold (Ih) (Max)	15 mA	15 mA
Configuration	Single	Single
Operating Temperature	-40°C ~ 110°C (TJ)	-40°C ~ 125°C (TJ)
Mounting Type	Through Hole	Through Hole
Package / Case	TO-220-3	TO-220-3
Current - Non Rep. Surge 50, 60Hz (Itsm)	33A, 40A	35A, 38A
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Product Status	Discontinued at DiGi Electronics	Active

Engineering Selection Recommendations

The BTB04-600SL from STMicroelectronics is the qualified substitute for the discontinued L6004R8. Both components share identical electrical specifications for gate trigger voltage, gate trigger current, hold current, on-state current, and off-state voltage. Both are ROHS3 compliant and housed in the TO-220-3 package.

The BTB04-600SL offers an extended operating temperature range (-40°C to 125°C versus -40°C to 110°C) and is currently in active production with substantial inventory availability. The non-repetitive surge current specifications differ slightly but remain within acceptable tolerance for equivalent circuit operation.

Frequently Asked Questions (FAQ)

Q: Can the BTB04-600SL directly replace the L6004R8 in existing designs?

A: Yes. Both components share identical gate trigger specifications (Vgt 1.3 V max, Igt 10 mA max), hold current (15 mA max), on-state current (4 A RMS max), and off-state voltage (600 V). The TO-220-3 package pinout is identical, enabling direct board-level substitution.

Q: What is the difference in operating temperature range?

A: The L6004R8 operates from -40°C to 110°C junction temperature, while the BTB04-600SL extends to 125°C. This wider range in the substitute part provides additional thermal margin in high-temperature applications.

Q: Are there differences in surge current ratings?

A: The L6004R8 specifies 33A and 40A non-repetitive surge current for 50 Hz and 60 Hz respectively. The BTB04-600SL specifies 35A and 38A. Both values remain within typical application requirements for 4 A RMS rated TRIACs.

Q: Is the BTB04-600SL available in the same packaging?

A: Yes. Both components use the TO-220-3 through-hole package with identical mechanical dimensions and pin configuration.

Q: What is the compliance status of the substitute part?

A: The BTB04-600SL is ROHS3 compliant and carries REACH Unaffected status, matching the regulatory compliance of the original L6004R8.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message