Equivalent & Substitute Parts for Q6004D3TP

Part Overview

The Q6004D3TP is a Logic - Sensitive Gate TRIAC 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 Active in product status and widely used in AC switching applications requiring sensitive gate triggering. Substitute parts are identified when equivalent electrical performance, package compatibility, and operational characteristics align with the original specification, enabling design flexibility and supply chain optimization.

Key Parameters

Parameter	Q6004D3TP Specification
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)	20 mA
Operating Temperature Range	-40°C ~ 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 is determined by the following criteria:

Primary Matching Parameters:

Voltage - Off State: 600 V (mandatory)
Package / Case: TO-252-3, DPAK (mandatory for mechanical and thermal compatibility)
Mounting Type: Surface Mount (mandatory)
Triac Type: Logic - Sensitive Gate (preferred for direct substitution)

Secondary Compatibility Parameters:

Current - On State (It (RMS)) (Max): 4 A or higher
Voltage - Gate Trigger (Vgt) (Max): 1.3 V or lower
Operating Temperature Range: -40°C ~ 125°C or equivalent
RoHS Status: ROHS3 Compliant or RoHS Compliant

Substitute parts are grouped into two categories:

Category A - Direct Substitutes (Logic - Sensitive Gate, 4 A Rating): MAC4DHMT4G, MAC4DLMT4G, MAC4DSMT4G, T405-600B, T405Q-600B-TR, T410-600B

Category B - Higher Current Substitutes (Logic - Sensitive Gate, 8 A Rating): BT137S-600E,118, BTA208S-600E,118

Category C - Alternative Type (Alternistor - Snubberless, 4 A Rating): T435-600B, T435-600B-TR

Parameter Comparison

Part Number	Manufacturer	Triac Type	Voltage - Off State	Current - On State (Max)	Voltage - Gate Trigger (Max)	Current - Gate Trigger (Max)	Current - Hold (Max)	Operating Temperature	Package	RoHS Status
Q6004D3TP	Littelfuse	Logic - Sensitive Gate	600 V	4 A	1.3 V	10 mA	20 mA	-40°C ~ 125°C	TO-252 (DPAK)	ROHS3
MAC4DHMT4G	Littelfuse	Logic - Sensitive Gate	600 V	4 A	1.3 V	5 mA	15 mA	-40°C ~ 110°C	TO-252 (DPAK)	ROHS3
MAC4DLMT4G	Littelfuse Inc.	Logic - Sensitive Gate	600 V	4 A	1.3 V	3 mA	15 mA	-40°C ~ 110°C	TO-252 (DPAK)	ROHS3
MAC4DSMT4G	Littelfuse Inc.	Logic - Sensitive Gate	600 V	4 A	1.3 V	10 mA	15 mA	-40°C ~ 125°C	TO-252 (DPAK)	ROHS3
BT137S-600E,118	WeEn Semiconductors	Logic - Sensitive Gate	600 V	8 A	1.5 V	10 mA	20 mA	-40°C ~ 125°C	TO-252 (DPAK)	RoHS
BTA208S-600E,118	WeEn Semiconductors	Logic - Sensitive Gate	600 V	8 A	1.5 V	10 mA	25 mA	-40°C ~ 125°C	TO-252 (DPAK)	RoHS
T405-600B	STMicroelectronics	Logic - Sensitive Gate	600 V	4 A	1.3 V	5 mA	10 mA	-40°C ~ 125°C	TO-252 (DPAK)	ROHS3
T405Q-600B-TR	STMicroelectronics	Logic - Sensitive Gate	600 V	4 A	1.3 V	5 mA	10 mA	-40°C ~ 125°C	TO-252 (DPAK)	ROHS3
T410-600B	STMicroelectronics	Logic - Sensitive Gate	600 V	4 A	1.3 V	10 mA	15 mA	-40°C ~ 125°C	TO-252 (DPAK)	ROHS3
T435-600B	STMicroelectronics	Alternistor - Snubberless	600 V	4 A	1.3 V	35 mA	35 mA	-40°C ~ 125°C	TO-252 (DPAK)	ROHS3
T435-600B-TR	STMicroelectronics	Alternistor - Snubberless	600 V	4 A	1.3 V	35 mA	35 mA	-40°C ~ 125°C	TO-252 (DPAK)	ROHS3

Engineering Selection Recommendations

Category A - Direct Substitutes (Recommended for Pin-Compatible Replacement):

MAC4DSMT4G is the closest direct substitute, matching the Q6004D3TP across all critical parameters including 10 mA gate trigger current, 20 mA hold current, and -40°C ~ 125°C operating temperature range. Both are ROHS3 compliant and Active in product status. This part is suitable for direct PCB replacement without circuit modification.

T405Q-600B-TR and T410-600B are functionally equivalent STMicroelectronics alternatives. T405Q-600B-TR offers the highest inventory availability (50,300 pcs) and identical electrical specifications to the original. T410-600B matches gate trigger current at 10 mA. Both are ROHS3 compliant and Active.

MAC4DHMT4G and T405-600B are compatible substitutes with lower gate trigger current (5 mA), reducing gate drive requirements. Both maintain 600 V / 4 A ratings and ROHS3 compliance. Operating temperature for MAC4DHMT4G is limited to -40°C ~ 110°C.

MAC4DLMT4G offers the lowest gate trigger current (3 mA) for minimal gate drive power consumption. Operating temperature is -40°C ~ 110°C. REACH status is Affected.

Category B - Higher Current Substitutes (For Increased Current Capacity):

BT137S-600E,118 and BTA208S-600E,118 are 8 A rated alternatives suitable when higher current capacity is required. Both maintain 600 V rating and Logic - Sensitive Gate type. Gate trigger voltage is 1.5 V (higher than original 1.3 V). Both are RoHS Compliant and Active. These parts are not direct pin-for-pin replacements in current-limited designs.

Category C - Alternative Type (For Snubberless Applications):

T435-600B and T435-600B-TR are Alternistor - Snubberless type TRIACs with identical 600 V / 4 A ratings. Gate trigger current is significantly higher at 35 mA. These parts are suitable only when snubberless operation is required and gate drive capability is available. Both are ROHS3 compliant and Active.

Frequently Asked Questions (FAQ)

Q: Can MAC4DSMT4G replace Q6004D3TP directly on the PCB?

A: Yes. MAC4DSMT4G is a direct substitute with identical TO-252 (DPAK) package pinout, matching voltage, current, and gate trigger specifications. No circuit modifications are required.

Q: What is the difference between MAC4DHMT4G and MAC4DLMT4G?

A: Both are 600 V / 4 A Logic - Sensitive Gate TRIACs in TO-252 package. MAC4DLMT4G has lower gate trigger current (3 mA vs. 5 mA), reducing gate drive power. MAC4DLMT4G has REACH Affected status. Both have -40°C ~ 110°C operating temperature, lower than the original -40°C ~ 125°C.

Q: Why are BT137S-600E,118 and BTA208S-600E,118 listed as substitutes if they are rated for 8 A?

A: These parts are functionally compatible for applications where higher current capacity is beneficial. They maintain 600 V rating and Logic - Sensitive Gate type in identical TO-252 package. However, gate trigger voltage is 1.5 V (vs. 1.3 V original), requiring verification in gate drive circuits. They are not suitable for current-limited designs expecting 4 A maximum.

Q: What is the difference between T405-600B and T405Q-600B-TR?

A: Both are STMicroelectronics 600 V / 4 A Logic - Sensitive Gate TRIACs with identical electrical specifications. T405-600B is supplied in Tube packaging; T405Q-600B-TR is supplied in Cut Tape (CT) & Digi-Reel® packaging. T405Q-600B-TR has significantly higher inventory availability (50,300 pcs vs. 4,375 pcs).

Q: When should T435-600B or T435-600B-TR be used instead of direct substitutes?

A: T435-600B and T435-600B-TR are Alternistor - Snubberless type TRIACs, not Logic - Sensitive Gate. They are suitable only when snubberless operation is a design requirement. Gate trigger current is 35 mA (vs. 10 mA original), requiring higher gate drive capability. These parts are not recommended for direct replacement in standard Logic - Sensitive Gate applications.

Q: Are all substitute parts ROHS3 compliant?

A: Most substitutes are ROHS3 compliant. BT137S-600E,118 and BTA208S-600E,118 are RoHS Compliant (not ROHS3). MAC4DLMT4G is ROHS3 compliant but has REACH Affected status. Verify compliance requirements for your application before selection.

Q: What is the inventory status of substitute parts?

A: MAC4DHMT4G has the highest inventory (119,400 pcs). T405Q-600B-TR has 50,300 pcs. MAC4DLMT4G has 30,900 pcs. T435-600B-TR has 31,100 pcs. BT137S-600E,118 has 23,176 pcs. T410-600B has the lowest inventory (1,528 pcs). Verify current availability with your supplier.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message