MAC4DCN-001 Equivalent & Substitute Parts

Part Overview

The MAC4DCN-001 is a standard TRIAC rated for 800V off-state voltage and 4A on-state current in a through-hole IPAK package. Manufactured by onsemi, this component is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production support. The part operates across a temperature range of -40°C to 125°C and is suitable for AC switching applications requiring standard gate trigger characteristics.

Key Parameters

Parameter	Value
Voltage - Off State	800 V
Current - On State (It (RMS)) (Max)	4 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V
Current - Non Rep. Surge 50, 60Hz (Itsm)	40A @ 60Hz
Current - Gate Trigger (Igt) (Max)	35 mA
Current - Hold (Ih) (Max)	35 mA
Operating Temperature	-40°C ~ 125°C (TJ)
Mounting Type	Through Hole
Package / Case	TO-251-3 Short Leads, IPak, TO-251AA
Configuration	Single

Substitute Part Grouping Explanation

Substitution for the MAC4DCN-001 is determined by matching the following critical parameters: 800V off-state voltage rating, 4A on-state current rating, 1.3V maximum gate trigger voltage, and single configuration. The substitute parts are grouped into two categories based on mounting type and TRIAC type variation:

Category 1: Surface Mount Alternative

MAC4DCN-1G (Littelfuse Inc.) - Direct functional equivalent with identical electrical specifications but surface-mount TO-252 (DPAK) package

Category 2: Through-Hole Alternatives with Variant TRIAC Types

Q8004V4TP (Littelfuse Inc.) - Through-hole TO-251 package, standard TRIAC type
T410-800H (STMicroelectronics) - Through-hole TO-251 package, logic-sensitive gate TRIAC type
T435-800H (STMicroelectronics) - Through-hole TO-251 package, Alternistor snubberless TRIAC type

All substitutes maintain the 800V voltage rating, 4A current rating, 1.3V gate trigger voltage, and -40°C to 125°C operating temperature range. Differences exist in gate trigger current (Igt) and hold current (Ih) specifications, as well as TRIAC type classification.

Parameter Comparison

Parameter	MAC4DCN-001 (onsemi)	MAC4DCN-1G (Littelfuse)	Q8004V4TP (Littelfuse)	T410-800H (STMicroelectronics)	T435-800H (STMicroelectronics)
Voltage - Off State	800 V	800 V	800 V	800 V	800 V
Current - On State (It (RMS)) (Max)	4 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	25 mA	10 mA	35 mA
Current - Hold (Ih) (Max)	35 mA	35 mA	30 mA	15 mA	35 mA
Operating Temperature	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C	-40°C ~ 125°C
Mounting Type	Through Hole	Surface Mount	Through Hole	Through Hole	Through Hole
Package / Case	TO-251-3 Short Leads, IPak, TO-251AA	TO-252-3, DPAK (2 Leads + Tab), SC-63	TO-251-3 Short Leads, IPak, TO-251AA	TO-251-3 Short Leads, IPak, TO-251AA	TO-251-3 Short Leads, IPak, TO-251AA
Triac Type	Standard	Standard	Standard	Logic - Sensitive Gate	Alternistor - Snubberless
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Through-Hole, Standard TRIAC Type): Q8004V4TP is the primary through-hole substitute maintaining standard TRIAC characteristics identical to the MAC4DCN-001. This part is active, RoHS3 compliant, and available in the same TO-251 package configuration.

For Surface-Mount Applications: MAC4DCN-1G provides functional equivalence with identical electrical specifications but requires PCB layout redesign for the TO-252 (DPAK) surface-mount package. This part is active and RoHS3 compliant.

For Sensitive Gate Applications: T410-800H is a logic-sensitive gate TRIAC variant with reduced gate trigger current (10 mA maximum) and hold current (15 mA maximum). This part is suitable for applications requiring lower gate drive requirements and is active with RoHS3 compliance.

For Snubberless Applications: T435-800H is an Alternistor snubberless TRIAC variant designed for applications where external snubber networks are not required. Gate trigger and hold current specifications match the original MAC4DCN-001. This part is active with RoHS3 compliance.

All active substitutes are RoHS3 compliant, addressing environmental and regulatory requirements that the obsolete MAC4DCN-001 does not meet.

Frequently Asked Questions (FAQ)

Q: Can MAC4DCN-1G replace MAC4DCN-001 in existing through-hole PCB designs? A: No. MAC4DCN-1G uses a surface-mount TO-252 (DPAK) package, while MAC4DCN-001 uses a through-hole TO-251 (IPAK) package. PCB redesign is required for this substitution.

Q: What is the difference between Q8004V4TP and T410-800H? A: Both are through-hole TO-251 packages with 800V/4A ratings. Q8004V4TP is a standard TRIAC with 25 mA gate trigger current. T410-800H is a logic-sensitive gate TRIAC with 10 mA gate trigger current, requiring lower gate drive power.

Q: Is T435-800H suitable for applications currently using MAC4DCN-001? A: Yes. T435-800H maintains the same 800V/4A ratings, gate trigger voltage (1.3V maximum), and gate/hold current specifications (35 mA maximum) as MAC4DCN-001. The Alternistor snubberless design eliminates the need for external snubber networks in some applications.

Q: Are all substitute parts RoHS compliant? A: Yes. All active substitute parts (MAC4DCN-1G, Q8004V4TP, T410-800H, T435-800H) are RoHS3 compliant. The original MAC4DCN-001 is RoHS non-compliant.

Q: What is the primary consideration when selecting between through-hole substitutes? A: The primary consideration is TRIAC type and gate drive requirements. Standard TRIAC (Q8004V4TP) matches the original specification. Logic-sensitive gate (T410-800H) requires lower gate drive current. Alternistor snubberless (T435-800H) eliminates external snubber requirements.

Q: Can these parts be used interchangeably in the same circuit? A: Through-hole substitutes (Q8004V4TP, T410-800H, T435-800H) share the same TO-251 package and can use the same PCB footprint. However, gate drive circuit design may require adjustment based on the specific TRIAC type and gate trigger current specifications.

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