MAC97A8G TRIAC Equivalent & Substitute Parts

Part Overview

The MAC97A8G is a Logic-Sensitive Gate TRIAC manufactured by onsemi, rated for 600V off-state voltage and 600mA on-state current in a Through Hole TO-92 package. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. Substitute parts maintain the same electrical performance envelope while offering active product status from alternative manufacturers.

Key Parameters

Parameter	Value
Triac Type	Logic - Sensitive Gate
Voltage - Off State	600 V
Current - On State (It (RMS)) (Max)	600 mA
Voltage - Gate Trigger (Vgt) (Max)	2 V
Current - Gate Trigger (Igt) (Max)	5 mA
Current - Hold (Ih) (Max)	10 mA
Operating Temperature	-40°C ~ 110°C (TJ)
Mounting Type	Through Hole
Package / Case	TO-226-3, TO-92-3 Long Body
Configuration	Single

Substitute Part Grouping Explanation

Substitution eligibility is determined by the following criteria:

Direct Substitutes maintain identical electrical specifications: 600V off-state voltage, 600mA on-state current, 2V maximum gate trigger voltage, 5mA maximum gate trigger current, and 10mA maximum hold current. These parts are pin-compatible and functionally interchangeable without circuit modification.

Upgrade Substitutes provide identical on-state current (600mA) and voltage ratings (600V) with improved or equivalent gate characteristics. These parts offer enhanced product status (Active vs. Obsolete) and extended temperature ranges, suitable for direct replacement in existing designs.

Similar Substitutes share the same voltage rating (600V) and package form factor (TO-92) but feature higher on-state current ratings (800mA or 1A). These parts are electrically compatible for applications where the original 600mA rating provides design margin. Gate trigger parameters remain within acceptable ranges for logic-level gate drive circuits.

Parameter Comparison

Part Number	Manufacturer	Product Status	Voltage - Off State	Current - On State (Max)	Voltage - Gate Trigger (Max)	Current - Gate Trigger (Max)	Current - Hold (Max)	Operating Temperature	Package
MAC97A8G	onsemi	Obsolete	600 V	600 mA	2 V	5 mA	10 mA	-40°C ~ 110°C	TO-92
LX807ME	Littelfuse Inc.	Active	600 V	800 mA	1.3 V	5 mA	5 mA	-40°C ~ 110°C	TO-92
MAC97A8,116	NXP USA Inc.	Active	600 V	600 mA	2 V	5 mA	10 mA	-40°C ~ 125°C	TO-92-3
BTA2008-600D,412	WeEn Semiconductors	Active	600 V	800 mA	2 V	5 mA	10 mA	-40°C ~ 125°C	TO-92-3
Z00607MA 1BA2	STMicroelectronics	Active	600 V	800 mA	1.3 V	5 mA	5 mA	-40°C ~ 110°C	TO-92-3
Z00607MA 2BL2	STMicroelectronics	Active	600 V	800 mA	1.3 V	5 mA	5 mA	-40°C ~ 110°C	TO-92
Z00607MA 5BL2	STMicroelectronics	Active	600 V	800 mA	1.3 V	5 mA	5 mA	-40°C ~ 110°C	TO-92-3
Z0103MA 1AA2	STMicroelectronics	Active	600 V	1 A	1.3 V	3 mA	7 mA	-40°C ~ 125°C	TO-92-3
Z0103MA,116	WeEn Semiconductors	Active	600 V	1 A	1.3 V	3 mA	7 mA	-40°C ~ 125°C	TO-92-3
Z0103MA,126	WeEn Semiconductors	Active	600 V	1 A	1 V	5 mA	7 mA	-40°C ~ 125°C	TO-92-3
Z0107MA 1AA2	STMicroelectronics	Active	600 V	1 A	1.3 V	5 mA	10 mA	-40°C ~ 125°C	TO-92-3

Engineering Selection Recommendations

Primary Upgrade Path: MAC97A8,116 (NXP USA Inc.) provides direct electrical equivalence to the MAC97A8G with identical on-state current (600mA) and gate trigger specifications. This part offers Active product status and extended maximum operating temperature (125°C vs. 110°C), eliminating obsolescence risk while maintaining design compatibility.

Alternative with Higher Current Rating: LX807ME (Littelfuse Inc.) and Z00607MA series (STMicroelectronics) offer 800mA on-state current with 600V voltage rating. These parts are suitable for applications where the original 600mA specification includes design margin. Lower gate trigger voltage (1.3V vs. 2V) may require gate drive circuit evaluation in sensitive applications.

Higher Current Alternatives: Z0103MA and Z0107MA series (STMicroelectronics, WeEn Semiconductors) provide 1A on-state current with 600V rating. Z0107MA 1AA2 maintains the 10mA hold current specification of the original part. These options support applications requiring increased current capacity within the same voltage class and package form factor.

Compliance Considerations: All recommended substitutes maintain REACH Unaffected status and EAR99 export classification consistent with the original part. RoHS3 compliance is available in STMicroelectronics and WeEn Semiconductors variants, supporting modern procurement requirements.

Frequently Asked Questions (FAQ)

Q: Can MAC97A8,116 replace MAC97A8G directly? A: Yes. MAC97A8,116 maintains identical electrical specifications (600V, 600mA, 2V gate trigger, 5mA gate trigger current, 10mA hold current) and TO-92-3 package compatibility. The part is pin-compatible and requires no circuit modification.

Q: What is the difference between 600mA and 800mA rated TRIACs? A: On-state current rating defines maximum RMS current the TRIAC can conduct continuously. An 800mA part (LX807ME, Z00607MA series) can handle higher load currents than the 600mA original. Both maintain identical 600V voltage rating and are compatible with the same gate drive circuits if gate trigger parameters fall within acceptable ranges.

Q: Are STMicroelectronics Z00607MA and Z0103MA interchangeable? A: Both share 600V rating and TO-92-3 package, but differ in on-state current (800mA vs. 1A) and gate characteristics. Z00607MA provides 800mA with 1.3V gate trigger; Z0103MA provides 1A with 1.3V gate trigger. Selection depends on application current requirements and gate drive capability.

Q: Does gate trigger voltage affect circuit design? A: Gate trigger voltage (Vgt) determines the minimum gate voltage required to switch the TRIAC. The original MAC97A8G specifies 2V maximum. Substitutes with 1.3V or 1V gate trigger require less gate drive voltage but remain compatible with circuits designed for 2V gate drive, as they will trigger at lower thresholds.

Q: What is the significance of hold current (Ih)? A: Hold current is the minimum gate current required to maintain TRIAC conduction after initial triggering. The original part specifies 10mA maximum. Substitutes with lower hold current (5mA or 7mA) require less sustained gate drive but remain compatible with circuits providing 10mA or higher gate current.

Q: Are packaging variants (Bulk, Tape & Reel, Cut Tape) electrically equivalent? A: Yes. Packaging variants (Bulk, Tape & Reel, Cut Tape) represent different supply formats for identical electrical components. Part number suffixes (e.g., ,116 for Tape & Reel, ,126 for Cut Tape) indicate packaging only. Electrical specifications remain constant across packaging variants of the same base part number.

Q: Can I use a 1A TRIAC in place of a 600mA part? A: Yes, if the application circuit and PCB layout support the higher current rating. A 1A part (Z0103MA, Z0107MA series) is electrically compatible and provides additional current capacity. Verify that gate drive circuits can supply the required gate trigger current (3mA to 5mA depending on variant).

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