Q6008DH3TP TRIAC Alternistor 600V 8A Equivalent & Substitute Parts

Part Overview

The Q6008DH3TP is a snubberless TRIAC Alternistor rated for 600V off-state voltage and 8A on-state current in a surface mount TO-252 (DPAK) package. This component is Active status and RoHS3 compliant. Substitute parts may be required due to inventory constraints, application-specific gate trigger requirements, or thermal operating range specifications.

Key Parameters

Parameter	Value
Manufacturer Part Number	Q6008DH3TP
Manufacturer	Littelfuse Inc.
Category	Thyristors
Triac Type	Alternistor - Snubberless
Voltage - Off State	600 V
Current - On State (It (RMS)) (Max)	8 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V
Current - Gate Trigger (Igt) (Max)	10 mA
Current - Hold (Ih) (Max)	15 mA
Operating Temperature	-40°C ~ 125°C (TJ)
Mounting Type	Surface Mount
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the Q6008DH3TP is determined by the following critical parameters:

Voltage - Off State: 600 V (must match)
Package / Case: TO-252-3, DPAK (must match for mechanical compatibility)
Mounting Type: Surface Mount (must match)
Configuration: Single (must match)
RoHS Status: ROHS3 Compliant (must match)

The substitute parts listed (MAC4DCMT4G, MAC4DHMT4G, MAC4DLMT4G, MAC4DSMT4G) share identical voltage ratings, package specifications, and compliance certifications. However, these substitutes operate at reduced on-state current (4A maximum versus 8A), representing a downrating in current capacity. Gate trigger characteristics and hold current specifications vary among substitutes based on TRIAC type classification (Standard versus Logic - Sensitive Gate variants).

Parameter Comparison

Parameter	Q6008DH3TP	MAC4DCMT4G	MAC4DHMT4G	MAC4DLMT4G	MAC4DSMT4G
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Littelfuse	Littelfuse Inc.	Littelfuse Inc.
Triac Type	Alternistor - Snubberless	Standard	Logic - Sensitive Gate	Logic - Sensitive Gate	Logic - Sensitive Gate
Voltage - Off State	600 V	600 V	600 V	600 V	600 V
Current - On State (It (RMS)) (Max)	8 A	4 A	4 A	4 A	4 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V	1.3 V	1.3 V	1.3 V	1.3 V
Current - Non Rep. Surge 50, 60Hz (Itsm)	80A, 85A	40A @ 60Hz	40A @ 60Hz	40A @ 60Hz	40A @ 60Hz
Current - Gate Trigger (Igt) (Max)	10 mA	35 mA	5 mA	3 mA	10 mA
Current - Hold (Ih) (Max)	15 mA	35 mA	15 mA	15 mA	15 mA
Operating Temperature	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)	-40°C ~ 110°C (TJ)	-40°C ~ 110°C (TJ)	-40°C ~ 125°C (TJ)
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Package / Case	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-252-3, DPAK (2 Leads + Tab), SC-63
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS Affected	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)

Engineering Selection Recommendations

MAC4DCMT4G is suitable for applications requiring standard TRIAC characteristics with 4A on-state current capacity and standard gate trigger current specifications. This part maintains full RoHS3 compliance and the extended operating temperature range of -40°C to 125°C.

MAC4DHMT4G provides logic-level sensitive gate operation with 5mA gate trigger current, reducing gate drive requirements. Operating temperature range is limited to -40°C to 110°C. RoHS3 compliance is maintained.

MAC4DLMT4G offers the lowest gate trigger current at 3mA, optimizing for minimal gate drive circuits. Operating temperature range is -40°C to 110°C. REACH status is listed as affected; verify compliance requirements for your application.

MAC4DSMT4G combines 10mA gate trigger current with the full -40°C to 125°C operating temperature range and RoHS3 compliance, providing a balance between gate drive requirements and thermal performance.

All substitute parts are rated for 600V off-state voltage and share identical TO-252 (DPAK) packaging. On-state current is reduced to 4A across all substitutes, requiring circuit verification for applications originally designed for 8A operation.

Frequently Asked Questions (FAQ)

Q: Can MAC4DCMT4G, MAC4DHMT4G, MAC4DLMT4G, or MAC4DSMT4G directly replace Q6008DH3TP in my circuit?

A: Direct replacement requires verification that your circuit operates within 4A on-state current limits. The Q6008DH3TP is rated for 8A maximum on-state current, while all substitute parts are rated for 4A maximum. Package compatibility is identical (TO-252 DPAK), and all parts share 600V off-state voltage ratings.

Q: What is the difference between the substitute TRIAC types?

A: MAC4DCMT4G is a Standard TRIAC with 35mA gate trigger current. MAC4DHMT4G, MAC4DLMT4G, and MAC4DSMT4G are Logic - Sensitive Gate variants with gate trigger currents of 5mA, 3mA, and 10mA respectively. Sensitive gate variants reduce gate drive power requirements.

Q: Are all substitutes RoHS3 compliant?

A: MAC4DCMT4G, MAC4DHMT4G, and MAC4DSMT4G are RoHS3 compliant. MAC4DLMT4G has REACH status listed as affected; verify compliance requirements for your specific application and region.

Q: What is the operating temperature difference between substitutes?

A: Q6008DH3TP, MAC4DCMT4G, and MAC4DSMT4G operate from -40°C to 125°C. MAC4DHMT4G and MAC4DLMT4G are limited to -40°C to 110°C. Select accordingly for high-temperature applications.

Q: Do all parts use the same package?

A: Yes. All parts use TO-252-3 (DPAK with 2 leads plus tab), SC-63 package designation. Surface mount compatibility is identical.

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