Q6004D4TP TRIAC 600V 4A TO-252 Equivalent & Substitute Parts

Part Overview

The Q6004D4TP is a standard TRIAC thyristor manufactured by Littelfuse Inc., rated for 600V off-state voltage and 4A on-state current in a Surface Mount TO-252 (DPAK) package. This component is active in production and ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are maintained across the specified parameter ranges, enabling design flexibility and supply chain alternatives.

Key Parameters

Parameter	Q6004D4TP
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)	25 mA
Current - Hold (Ih Max)	30 mA
Operating Temperature Range	-40°C to 125°C (TJ)
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the Q6004D4TP is determined by the following criteria:

Mandatory Matching Parameters:

Voltage - Off State: 600 V
Current - On State (It RMS Max): 4 A
Package / Case: TO-252-3, DPAK (2 Leads + Tab), SC-63
Mounting Type: Surface Mount
Configuration: Single

Allowable Parameter Variations:

Voltage - Gate Trigger (Vgt Max): Up to 1.3 V
Current - Gate Trigger (Igt Max): Up to 25 mA
Current - Hold (Ih Max): Up to 30 mA
Operating Temperature Range: Minimum -40°C to 125°C
Triac Type: Standard, Logic - Sensitive Gate, or Alternistor - Snubberless

Substitute parts may differ in gate trigger characteristics and triac type classification while maintaining electrical and mechanical compatibility within the specified voltage and current ratings.

Parameter Comparison

Part Number	Manufacturer	Triac Type	Voltage - Off State	Current - On State (It RMS Max)	Vgt Max (V)	Igt Max (mA)	Ih Max (mA)	Operating Temp Range	Package	RoHS Status
Q6004D4TP	Littelfuse Inc.	Standard	600 V	4 A	1.3	25	30	-40°C to 125°C	TO-252-3, DPAK	ROHS3 Compliant
MAC4DHMT4G	Littelfuse	Logic - Sensitive Gate	600 V	4 A	1.3	5	15	-40°C to 110°C	TO-252-3, DPAK	ROHS3 Compliant
MAC4DLMT4G	Littelfuse Inc.	Logic - Sensitive Gate	600 V	4 A	1.3	3	15	-40°C to 110°C	TO-252-3, DPAK	ROHS3 Compliant
MAC4DSMT4G	Littelfuse Inc.	Logic - Sensitive Gate	600 V	4 A	1.3	10	15	-40°C to 125°C	TO-252-3, DPAK	ROHS3 Compliant
BTA208S-600F,118	WeEn Semiconductors	Standard	600 V	8 A	1.5	25	30	-40°C to 125°C	TO-252-3, DPAK	RoHS Compliant
T405-600B	STMicroelectronics	Logic - Sensitive Gate	600 V	4 A	1.3	5	10	-40°C to 125°C	TO-252-3, DPAK	ROHS3 Compliant
T405-600B-TR	STMicroelectronics	Logic - Sensitive Gate	600 V	4 A	1.3	5	10	-40°C to 125°C	TO-252-3, DPAK	ROHS3 Compliant
T405Q-600B-TR	STMicroelectronics	Logic - Sensitive Gate	600 V	4 A	1.3	5	10	-40°C to 125°C	TO-252-3, DPAK	ROHS3 Compliant
T410-600B	STMicroelectronics	Logic - Sensitive Gate	600 V	4 A	1.3	10	15	-40°C to 125°C	TO-252-3, DPAK	ROHS3 Compliant
T435-600B	STMicroelectronics	Alternistor - Snubberless	600 V	4 A	1.3	35	35	-40°C to 125°C	TO-252-3, DPAK	ROHS3 Compliant
T435-600B-TR	STMicroelectronics	Alternistor - Snubberless	600 V	4 A	1.3	35	35	-40°C to 125°C	TO-252-3, DPAK	ROHS3 Compliant

Engineering Selection Recommendations

All listed substitute parts maintain the core electrical specifications of 600V off-state voltage and 4A on-state current in the TO-252-3 DPAK package. Selection among substitutes depends on application-specific gate trigger requirements and operating temperature constraints.

Littelfuse MAC4 Series (MAC4DHMT4G, MAC4DLMT4G, MAC4DSMT4G): These Logic - Sensitive Gate variants offer reduced gate trigger current (3-5 mA) compared to the standard Q6004D4TP (25 mA). MAC4DSMT4G maintains the full -40°C to 125°C temperature range. All are ROHS3 compliant.

STMicroelectronics T405 Series (T405-600B, T405-600B-TR, T405Q-600B-TR): These Logic - Sensitive Gate TRIACs feature 5 mA gate trigger current and 10 mA hold current, with full -40°C to 125°C operating range. T405-600B-TR and T405Q-600B-TR are supplied in Cut Tape & Digi-Reel packaging. All are ROHS3 compliant.

STMicroelectronics T410-600B: This Logic - Sensitive Gate TRIAC provides 10 mA gate trigger current and 15 mA hold current across the full -40°C to 125°C temperature range. ROHS3 compliant.

STMicroelectronics T435 Series (T435-600B, T435-600B-TR): These Alternistor - Snubberless TRIACs feature higher gate trigger (35 mA) and hold (35 mA) currents, suitable for applications requiring snubberless operation. Both maintain -40°C to 125°C range and are ROHS3 compliant.

WeEn Semiconductors BTA208S-600F,118: This standard TRIAC is rated for 8A on-state current, exceeding the 4A specification of Q6004D4TP. Gate trigger and hold parameters match the original part. RoHS compliant.

Frequently Asked Questions (FAQ)

Q: Can MAC4DHMT4G replace Q6004D4TP directly? A: Yes. Both devices share 600V off-state voltage, 4A on-state current, and TO-252-3 DPAK packaging. MAC4DHMT4G is a Logic - Sensitive Gate variant with lower gate trigger current (5 mA vs. 25 mA). Operating temperature range is -40°C to 110°C versus -40°C to 125°C for Q6004D4TP.

Q: What is the difference between Logic - Sensitive Gate and Standard TRIAC types? A: Logic - Sensitive Gate TRIACs require lower gate trigger current to activate, typically 3-10 mA compared to 25 mA for standard types. This reduces gate drive circuit complexity. Both types maintain identical voltage and current ratings in this product family.

Q: Is BTA208S-600F,118 a suitable substitute? A: BTA208S-600F,118 maintains 600V voltage and TO-252-3 DPAK packaging but is rated for 8A on-state current, exceeding the 4A specification. It is electrically compatible but represents an over-specification for 4A applications.

Q: What packaging options are available for substitute parts? A: Substitute parts are supplied in Tube, Tape & Reel (TR), or Cut Tape (CT) & Digi-Reel packaging. All maintain the same TO-252-3 DPAK physical form factor for PCB mounting.

Q: Are all substitute parts ROHS3 compliant? A: All listed substitutes except BTA208S-600F,118 are ROHS3 compliant. BTA208S-600F,118 is RoHS compliant. Verify compliance requirements for your specific application.

Q: Which substitute offers the closest electrical match to Q6004D4TP? A: T410-600B provides the closest match with identical voltage and current ratings, matching gate trigger voltage (1.3V max), and full -40°C to 125°C operating range. Gate trigger current is 10 mA versus 25 mA for the original part.

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