MAC4DCN-1G Equivalent & Substitute Parts

Part Overview

The MAC4DCN-1G is a standard TRIAC manufactured by Littelfuse Inc., rated for 800V off-state voltage and 4A on-state current in a surface mount TO-252 (DPAK) package. This component is Active status and RoHS3 compliant. Equivalent and substitute parts are identified when they share compatible electrical ratings and can function within the same application parameters, accounting for differences in TRIAC type classification and mounting technology.

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 - Gate Trigger (Igt) (Max)	35 mA
Current - Hold (Ih) (Max)	35 mA
Operating Temperature Range	-40°C ~ 125°C (TJ)
Configuration	Single
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the MAC4DCN-1G is determined by the following criteria:

Voltage Rating Match: Off-state voltage must be 800V
Current Rating Match: On-state current (It (RMS)) must be 4A maximum
Gate Trigger Voltage: Vgt (Max) must be 1.3V or lower
Configuration: Single TRIAC configuration required
Compliance: RoHS3 compliance and REACH unaffected status maintained
Temperature Range: Operating temperature -40°C ~ 125°C (TJ)

The substitute parts T410-800H and T435-800H meet these core electrical parameters. Differences exist in TRIAC type classification (Logic - Sensitive Gate vs. Alternistor - Snubberless), gate trigger current (Igt), hold current (Ih), and mounting technology (Through Hole vs. Surface Mount), which may affect application suitability based on circuit design requirements.

Parameter Comparison

Parameter	MAC4DCN-1G (Littelfuse)	T410-800H (STMicroelectronics)	T435-800H (STMicroelectronics)
Triac Type	Standard	Logic - Sensitive Gate	Alternistor - Snubberless
Voltage - Off State	800 V	800 V	800 V
Current - On State (It (RMS)) (Max)	4 A	4 A	4 A
Voltage - Gate Trigger (Vgt) (Max)	1.3 V	1.3 V	1.3 V
Current - Gate Trigger (Igt) (Max)	35 mA	10 mA	35 mA
Current - Hold (Ih) (Max)	35 mA	15 mA	35 mA
Current - Non Rep. Surge 50, 60Hz (Itsm)	40A @ 60Hz	30A, 31A	30A, 31A
Operating Temperature	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)
Mounting Type	Surface Mount	Through Hole	Through Hole
Package / Case	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
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected
Product Status	Active	Active	Active

Engineering Selection Recommendations

Both T410-800H and T435-800H are Active status components with RoHS3 compliance and REACH unaffected designation, matching the regulatory profile of the MAC4DCN-1G.

T410-800H (STMicroelectronics): This Logic - Sensitive Gate TRIAC features reduced gate trigger current (10 mA) and hold current (15 mA) compared to the MAC4DCN-1G. The lower surge current rating (30A, 31A vs. 40A @ 60Hz) and reduced gate drive requirements may be advantageous in applications with limited gate drive capability. Through-hole mounting requires PCB layout modification from the surface mount MAC4DCN-1G.

T435-800H (STMicroelectronics): This Alternistor - Snubberless TRIAC maintains identical gate trigger current (35 mA) and hold current (35 mA) specifications as the MAC4DCN-1G, with matching surge current ratings (30A, 31A). The Snubberless™ series designation indicates optimized performance for applications where snubber circuits may be eliminated. Through-hole mounting requires PCB layout modification from the surface mount MAC4DCN-1G.

Selection between substitutes depends on circuit design requirements regarding gate drive capability, surge current tolerance, and PCB assembly technology compatibility.

Frequently Asked Questions (FAQ)

Q: Can T410-800H or T435-800H directly replace MAC4DCN-1G on an existing PCB?

A: Direct PCB replacement is not possible due to package differences. MAC4DCN-1G uses surface mount TO-252 (DPAK) packaging, while both substitutes use through-hole TO-251 (IPAK) packaging. PCB redesign and component footprint modification are required.

Q: What is the primary difference between T410-800H and T435-800H?

A: T410-800H is classified as Logic - Sensitive Gate with reduced gate trigger current (10 mA) and hold current (15 mA). T435-800H is classified as Alternistor - Snubberless with gate trigger current (35 mA) and hold current (35 mA) matching the MAC4DCN-1G. The T435-800H maintains closer electrical compatibility with the original part.

Q: Are all three parts RoHS3 compliant?

A: Yes. MAC4DCN-1G, T410-800H, and T435-800H are all RoHS3 compliant with REACH unaffected status.

Q: What is the significance of the Snubberless™ designation on T435-800H?

A: The Snubberless™ series indicates the TRIAC is optimized for applications where external snubber circuits may be eliminated, potentially simplifying circuit design. This is a product series classification and does not affect core electrical parameter compatibility.

Q: Do the substitute parts have the same operating temperature range?

A: Yes. All three parts operate across -40°C ~ 125°C (TJ) junction temperature range.

Q: What is the impact of different surge current ratings?

A: MAC4DCN-1G is rated for 40A @ 60Hz non-repetitive surge current, while T410-800H and T435-800H are rated for 30A, 31A. Applications requiring higher surge current tolerance should account for this difference in component selection.

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