Equivalent & Substitute Parts for L6004D8TP

Part Overview

The L6004D8TP is a TRIAC Logic - Sensitive Gate thyristor manufactured by Littelfuse, rated for 600 V off-state voltage and 4 A on-state current in a Surface Mount TO-252 (DPAK) package. This component is classified as Active product status and is RoHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter range, enabling procurement flexibility and supply chain continuity.

Key Parameters

Parameter	L6004D8TP Value
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
Operating Temperature Range	-40°C ~ 110°C (TJ)
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63
Mounting Type	Surface Mount
Configuration	Single
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the L6004D8TP is determined by the following criteria:

Electrical Parameters (Must Match or Exceed):

Voltage - Off State: 600 V minimum
Current - On State (It (RMS)) (Max): 4 A minimum
Voltage - Gate Trigger (Vgt) (Max): 1.3 V maximum
Current - Gate Trigger (Igt) (Max): 10 mA maximum
Current - Hold (Ih) (Max): 15 mA maximum

Mechanical Parameters (Must Match):

Package / Case: TO-252-3, DPAK (2 Leads + Tab), SC-63
Mounting Type: Surface Mount
Configuration: Single

Compliance Parameters:

RoHS Status: ROHS3 Compliant
Product Status: Active

Substitute parts are grouped into two categories: direct electrical equivalents (Logic - Sensitive Gate TRIACs with identical electrical specifications) and functional alternatives (Alternistor - Snubberless TRIACs with different gate characteristics but compatible voltage and current ratings).

Parameter Comparison

Part Number	Manufacturer	Triac Type	Voltage - Off State	Current - On State (Max)	Vgt (Max)	Igt (Max)	Ih (Max)	Operating Temp Range	Packaging
L6004D8TP	Littelfuse	Logic - Sensitive Gate	600 V	4 A	1.3 V	10 mA	15 mA	-40°C ~ 110°C	Tube
MAC4DHMT4G	Littelfuse	Logic - Sensitive Gate	600 V	4 A	1.3 V	5 mA	15 mA	-40°C ~ 110°C	Tape & Reel (TR)
MAC4DLMT4G	Littelfuse Inc.	Logic - Sensitive Gate	600 V	4 A	1.3 V	3 mA	15 mA	-40°C ~ 110°C	Tape & Reel (TR)
MAC4DSMT4G	Littelfuse Inc.	Logic - Sensitive Gate	600 V	4 A	1.3 V	10 mA	15 mA	-40°C ~ 125°C	Tape & Reel (TR)
T405-600B	STMicroelectronics	Logic - Sensitive Gate	600 V	4 A	1.3 V	5 mA	10 mA	-40°C ~ 125°C	Tube
T410-600B	STMicroelectronics	Logic - Sensitive Gate	600 V	4 A	1.3 V	10 mA	15 mA	-40°C ~ 125°C	Tube
T410-600B-TR	STMicroelectronics	Logic - Sensitive Gate	600 V	4 A	1.3 V	10 mA	15 mA	-40°C ~ 125°C	Cut Tape (CT) & Digi-Reel®
T435-600B	STMicroelectronics	Alternistor - Snubberless	600 V	4 A	1.3 V	35 mA	35 mA	-40°C ~ 125°C	Tube
T435-600B-TR	STMicroelectronics	Alternistor - Snubberless	600 V	4 A	1.3 V	35 mA	35 mA	-40°C ~ 125°C	Cut Tape (CT) & Digi-Reel®
T810-600B	STMicroelectronics	Logic - Sensitive Gate	600 V	8 A	1.3 V	10 mA	15 mA	-40°C ~ 125°C	Tube
T810-600B-TR	STMicroelectronics	Logic - Sensitive Gate	600 V	8 A	1.3 V	10 mA	15 mA	-40°C ~ 125°C	Cut Tape (CT) & Digi-Reel®

Engineering Selection Recommendations

Direct Electrical Equivalents (Logic - Sensitive Gate, 4 A Rating):

MAC4DHMT4G, MAC4DLMT4G, and MAC4DSMT4G from Littelfuse maintain identical voltage and current ratings with lower gate trigger current specifications (3 mA to 5 mA), providing enhanced gate sensitivity. All three are RoHS3 compliant and Active status. MAC4DSMT4G extends operating temperature to 125°C. T410-600B and T410-600B-TR from STMicroelectronics provide exact parameter matching with extended temperature range (-40°C ~ 125°C) and are available in both Tube and Cut Tape packaging. T405-600B offers reduced hold current (10 mA) with lower gate trigger current (5 mA).

Functional Alternatives (Alternistor - Snubberless, 4 A Rating):

T435-600B and T435-600B-TR are Alternistor - Snubberless devices with elevated gate trigger and hold currents (35 mA each), suitable for applications requiring snubberless operation. These maintain 600 V / 4 A electrical ratings and extended temperature range.

Higher Current Alternative:

T810-600B and T810-600B-TR provide 8 A on-state current rating with identical gate characteristics, enabling use in higher current applications while maintaining 600 V voltage rating and Logic - Sensitive Gate functionality.

All substitute parts are RoHS3 compliant and Active product status. Selection depends on packaging requirements (Tube vs. Tape & Reel), temperature operating range, and gate sensitivity specifications.

Frequently Asked Questions (FAQ)

Q: Can MAC4DHMT4G replace L6004D8TP directly?

A: Yes. MAC4DHMT4G meets all electrical parameter requirements with lower gate trigger current (5 mA vs. 10 mA), providing improved gate sensitivity. The primary difference is packaging format (Tape & Reel vs. Tube). Both are RoHS3 compliant and Active status.

Q: What is the difference between Logic - Sensitive Gate and Alternistor - Snubberless TRIACs?

A: Logic - Sensitive Gate TRIACs (L6004D8TP, T410-600B) feature lower gate trigger and hold currents, enabling direct logic-level gate control. Alternistor - Snubberless TRIACs (T435-600B) have higher gate currents and are designed for snubberless operation without external RC networks. Both maintain identical 600 V / 4 A ratings.

Q: Why do some substitutes have lower gate trigger current specifications?

A: Lower Igt values (3 mA, 5 mA) indicate enhanced gate sensitivity, allowing reliable triggering with reduced gate drive power. This is a performance improvement over the 10 mA specification of L6004D8TP and does not prevent substitution.

Q: Can T810-600B replace L6004D8TP?

A: T810-600B is rated for 8 A on-state current versus 4 A for L6004D8TP. While electrically compatible at the 4 A operating point, this part is oversized for applications requiring only 4 A. Use only if higher current capability is needed.

Q: What is the significance of packaging differences (Tube vs. Tape & Reel)?

A: Tube packaging is suitable for manual assembly and lower-volume applications. Tape & Reel and Cut Tape packaging are optimized for automated pick-and-place assembly. Electrical performance is identical; selection depends on assembly process requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts are RoHS3 compliant. MAC4DLMT4G is noted as REACH Affected; all others are REACH Unaffected.

Q: What is the operating temperature difference between L6004D8TP and substitute parts?

A: L6004D8TP operates -40°C ~ 110°C. Most substitutes (T410-600B, T435-600B, T810-600B series, MAC4DSMT4G) extend to -40°C ~ 125°C, providing wider thermal operating range. MAC4DHMT4G and MAC4DLMT4G maintain -40°C ~ 110°C.

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