MAC15SNG Equivalent & Substitute Parts

Part Overview

The MAC15SNG is a Logic - Sensitive Gate TRIAC manufactured by onsemi, rated for 800V off-state voltage and 15A on-state current in a Through Hole TO-220 package. This component is classified as Obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support and procurement planning. The sensitive gate configuration requires lower gate trigger current (5 mA maximum) compared to standard TRIAC designs, which is a critical parameter for gate drive circuit compatibility.

Key Parameters

Parameter	Value	Unit
Voltage - Off State	800	V
Current - On State (It (RMS)) (Max)	15	A
Voltage - Gate Trigger (Vgt) (Max)	1.5	V
Current - Gate Trigger (Igt) (Max)	5	mA
Current - Hold (Ih) (Max)	10	mA
Current - Non Rep. Surge 50, 60Hz (Itsm)	120	A @ 60Hz
Operating Temperature Range	-40 to 110	°C (TJ)
Package / Case	TO-220-3
Mounting Type	Through Hole

Substitute Part Grouping Explanation

Substitution eligibility for the MAC15SNG is determined by the following critical parameters:

Voltage - Off State: 800V minimum
Current - On State: 15A minimum
Package / Case: TO-220-3 (mechanical and thermal compatibility)
Mounting Type: Through Hole (PCB compatibility)
Gate Trigger Characteristics: Vgt ≤ 1.5V and Igt ≤ 5mA (gate drive circuit compatibility)

The MAC15NG from Littelfuse Inc. meets the primary electrical and mechanical requirements. However, the MAC15NG is classified as a Standard TRIAC rather than Logic - Sensitive Gate, resulting in higher gate trigger current (35 mA maximum) and hold current (40 mA maximum) specifications. This difference affects gate drive circuit design but does not preclude functional substitution in applications where gate drive capability is sufficient.

Parameter Comparison

Parameter	MAC15SNG (onsemi)	MAC15NG (Littelfuse)	Unit
Triac Type	Logic - Sensitive Gate	Standard
Voltage - Off State	800	800	V
Current - On State (It (RMS)) (Max)	15	15	A
Voltage - Gate Trigger (Vgt) (Max)	1.5	1.5	V
Current - Gate Trigger (Igt) (Max)	5	35	mA
Current - Hold (Ih) (Max)	10	40	mA
Current - Non Rep. Surge 50, 60Hz (Itsm)	120 @ 60Hz	150 @ 60Hz	A
Operating Temperature Range	-40 to 110	-40 to 125	°C (TJ)
Package / Case	TO-220-3	TO-220-3
Mounting Type	Through Hole	Through Hole
Product Status	Obsolete	Active
RoHS Status	Not specified	ROHS3 Compliant

Engineering Selection Recommendations

The MAC15NG is the primary substitute for the MAC15SNG based on matching voltage, current, and package specifications. The MAC15NG is currently Active in production status, ensuring long-term availability and supply chain stability compared to the Obsolete MAC15SNG.

Key considerations for selection:

Gate drive circuit compatibility must be evaluated. The MAC15NG requires higher gate trigger current (35 mA vs. 5 mA) and hold current (40 mA vs. 10 mA). Existing gate drive circuits designed for the sensitive gate MAC15SNG may require modification to supply adequate gate current for the standard MAC15NG.

The MAC15NG provides superior surge current capability (150A vs. 120A @ 60Hz) and extended operating temperature range (-40 to 125°C vs. -40 to 110°C), offering improved performance margins in thermal and transient conditions.

The MAC15NG carries ROHS3 compliance certification, meeting current environmental and regulatory requirements for new designs and procurement.

Frequently Asked Questions (FAQ)

Q: Can the MAC15NG directly replace the MAC15SNG without circuit modifications?

A: Mechanical and thermal compatibility is direct due to identical TO-220-3 packaging. However, gate drive circuit evaluation is required. The MAC15NG's higher gate trigger current (35 mA vs. 5 mA) may exceed the capability of gate drive circuits designed for the sensitive gate MAC15SNG. Verify that the existing gate driver can supply the required current before substitution.

Q: What is the difference between Logic - Sensitive Gate and Standard TRIAC types?

A: Logic - Sensitive Gate TRIACs are optimized for low gate trigger current applications, typically used with microcontroller or logic-level gate drivers. Standard TRIACs require higher gate current but offer broader design flexibility. The MAC15SNG's 5 mA gate trigger current is characteristic of sensitive gate designs, while the MAC15NG's 35 mA is typical for standard designs.

Q: Are there thermal considerations when substituting the MAC15NG for the MAC15SNG?

A: Both devices use identical TO-220-3 packaging with equivalent thermal characteristics. The MAC15NG's extended operating temperature range (-40 to 125°C vs. -40 to 110°C) provides additional margin. Thermal management design remains unchanged.

Q: Does the MAC15NG meet current compliance requirements?

A: The MAC15NG is ROHS3 compliant and carries REACH Unaffected status, meeting current environmental and regulatory standards. The MAC15SNG compliance status is not fully specified in available documentation.

Q: What is the impact of the higher surge current rating on the MAC15NG?

A: The MAC15NG's 150A surge rating (vs. 120A for MAC15SNG) provides improved transient protection margin. This does not require circuit modification and represents an enhancement for applications subject to inrush or fault conditions.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message