Q6006DH4TP TRIAC Alternistor 600V 6A Equivalent & Substitute Parts

Part Overview

The Q6006DH4TP is a snubberless TRIAC Alternistor rated for 600V off-state voltage and 6A on-state current in a surface mount TO-252 (DPAK) package. This component is actively produced by Littelfuse Inc. and maintains ROHS3 compliance with unlimited moisture sensitivity rating. Substitute parts become necessary when addressing specific application requirements such as gate trigger sensitivity, surge current handling, or inventory availability while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Manufacturer Part Number	Q6006DH4TP
Manufacturer	Littelfuse Inc.
Category	Thyristors
Triac Type	Alternistor - Snubberless
Voltage - Off State	600 V
Current - On State (It (RMS)) (Max)	6 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V
Current - Gate Trigger (Igt) (Max)	35 mA
Current - Hold (Ih) (Max)	35 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
Moisture Sensitivity Level (MSL)	1 (Unlimited)
Product Status	Active

Substitute Part Grouping Explanation

Substitution of the Q6006DH4TP is constrained by the following critical parameters:

Mandatory Compatibility Parameters:

Voltage - Off State: 600 V (exact match required)
Package / Case: TO-252-3, DPAK (exact match required)
Mounting Type: Surface Mount (exact match required)
Configuration: Single (exact match required)

Allowable Variation Parameters:

Current - On State (It (RMS)) (Max): Substitute must equal or exceed 6 A
Voltage - Gate Trigger (Vgt) (Max): Must not exceed 1.3 V
Current - Gate Trigger (Igt) (Max): May vary based on application sensitivity requirements
Current - Hold (Ih) (Max): May vary based on application requirements
Triac Type: May differ (Standard, Logic - Sensitive Gate, or Alternistor variants)
Operating Temperature Range: May be narrower or equal to -40°C ~ 125°C
RoHS and REACH Compliance: Must maintain or exceed compliance level

The substitute parts listed (MAC4DCMT4G, MAC4DHMT4G, MAC4DLMT4G, MAC4DSMT4G) share identical voltage, package, and mounting specifications but operate at reduced on-state current (4 A maximum) with varying gate trigger characteristics.

Parameter Comparison

Parameter	Q6006DH4TP	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)	6 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 - Gate Trigger (Igt) (Max)	35 mA	35 mA	5 mA	3 mA	10 mA
Current - Hold (Ih) (Max)	35 mA	35 mA	15 mA	15 mA	15 mA
Operating Temperature Range	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 110°C	-40°C ~ 110°C	-40°C ~ 125°C
Package / Case	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK	TO-252-3, DPAK
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)	1 (Unlimited)
Product Status	Active	Active	Active	Active	Active

Engineering Selection Recommendations

Q6006DH4TP Selection Criteria: Use the Q6006DH4TP when applications require 6A on-state current capacity with snubberless Alternistor topology. This part maintains the widest operating temperature range (-40°C ~ 125°C) and standard gate trigger characteristics (35 mA maximum).

MAC4DCMT4G Selection Criteria: Use MAC4DCMT4G as a substitute only when application current requirements do not exceed 4A on-state current. This standard TRIAC maintains identical gate trigger specifications (35 mA maximum) and full temperature range (-40°C ~ 125°C), making it suitable for lower-current applications with equivalent gate drive requirements.

MAC4DHMT4G Selection Criteria: Use MAC4DHMT4G when applications require sensitive gate triggering (5 mA maximum gate trigger current) with 4A on-state current capacity. Operating temperature range is limited to -40°C ~ 110°C. This part is suitable for low-power gate drive circuits.

MAC4DLMT4G Selection Criteria: Use MAC4DLMT4G when applications require the most sensitive gate triggering (3 mA maximum gate trigger current) with 4A on-state current capacity. Operating temperature range is limited to -40°C ~ 110°C. REACH status is affected. This part is suitable for ultra-low-power gate drive circuits.

MAC4DSMT4G Selection Criteria: Use MAC4DSMT4G when applications require moderate sensitive gate triggering (10 mA maximum gate trigger current) with 4A on-state current capacity. This part maintains the full operating temperature range (-40°C ~ 125°C) and REACH unaffected status, providing a balance between gate sensitivity and thermal performance.

All substitute parts maintain ROHS3 compliance, unlimited moisture sensitivity rating (MSL 1), and active product status.

Frequently Asked Questions (FAQ)

Q: Can MAC4DCMT4G, MAC4DHMT4G, MAC4DLMT4G, or MAC4DSMT4G directly replace Q6006DH4TP in all applications?

A: No. These substitutes are rated for 4A maximum on-state current, compared to the Q6006DH4TP's 6A rating. Substitution is only valid when application current requirements do not exceed 4A. All other electrical parameters (600V off-state voltage, 1.3V maximum gate trigger voltage, TO-252 package) are compatible.

Q: What is the primary difference between Q6006DH4TP and the MAC4 series substitutes?

A: The Q6006DH4TP is an Alternistor - Snubberless topology rated for 6A, while MAC4 series parts are Standard or Logic - Sensitive Gate topologies rated for 4A. The MAC4 series offers variants with reduced gate trigger current requirements (3 mA to 35 mA) for different gate drive circuit designs.

Q: Are there temperature range limitations when using MAC4DHMT4G or MAC4DLMT4G?

A: Yes. MAC4DHMT4G and MAC4DLMT4G are limited to -40°C ~ 110°C operating temperature, compared to Q6006DH4TP's -40°C ~ 125°C range. Applications requiring operation above 110°C must use Q6006DH4TP, MAC4DCMT4G, or MAC4DSMT4G.

Q: Do all substitute parts maintain the same compliance certifications?

A: All parts are ROHS3 compliant with unlimited moisture sensitivity (MSL 1). MAC4DLMT4G has affected REACH status, while Q6006DH4TP and other substitutes maintain REACH unaffected status. Verify compliance requirements for your specific application.

Q: What is the significance of gate trigger current (Igt) variations among the MAC4 series?

A: Gate trigger current determines the minimum gate current required to switch the TRIAC. Lower values (MAC4DLMT4G at 3 mA) require less gate drive power, while higher values (MAC4DCMT4G at 35 mA) require more gate drive power. Select based on your gate drive circuit capability.

Q: Can Q6006DH4TP be used in applications designed for 4A current?

A: Yes. Q6006DH4TP can be used in 4A applications as it exceeds the current requirement. However, this may result in unnecessary cost and board space usage if a lower-rated substitute meets the application needs.

Q: Are all parts available in the same packaging format?

A: Yes. All parts use TO-252-3 (DPAK with 2 Leads + Tab) surface mount package. Q6006DH4TP is supplied in Tube packaging, while MAC4 series substitutes are supplied in Tape & Reel (TR) format. Verify packaging compatibility with your assembly process.

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