MAC228A10 TRIAC Equivalent & Substitute Parts

Part Overview

The MAC228A10 is a Logic-Sensitive Gate TRIAC rated for 800V off-state voltage and 8A on-state current in a TO-220AB through-hole package. Manufactured by onsemi, this component is classified as obsolete. Due to its obsolete status and limited availability from the original manufacturer, identifying equivalent and substitute parts from active manufacturers is necessary for design continuity and procurement reliability.

Key Parameters

Parameter	Value
Voltage - Off State	800 V
Current - On State (It (RMS)) (Max)	8 A
Voltage - Gate Trigger (Vgt) (Max)	2 V
Current - Gate Trigger (Igt) (Max)	5 mA
Current - Hold (Ih) (Max)	15 mA
Current - Non Rep. Surge 50, 60Hz (Itsm)	80A @ 60Hz
Operating Temperature Range	-40°C ~ 110°C (TJ)
Package / Case	TO-220-3
Mounting Type	Through Hole
Configuration	Single

Substitute Part Grouping Explanation

Substitution for the MAC228A10 is determined by the following critical parameters:

Voltage Rating (Off-State): 800V minimum required
Current Rating (On-State): Minimum 8A; higher ratings acceptable
Gate Trigger Voltage (Vgt): Maximum 2V; lower values acceptable
Gate Trigger Current (Igt): Maximum 5mA; lower values acceptable
Hold Current (Ih): Maximum 15mA
Package: TO-220-3 (TO-220AB) through-hole configuration
Triac Type: Logic-Sensitive Gate

Substitute parts are grouped into two categories:

Direct Equivalent: MAC228A10G (Littelfuse Inc.) maintains identical electrical specifications and is a direct replacement.

Compatible Substitutes: BTA310-800E,127, BTA312-800E,127, BTA312-800ET,127, and BTA410-800ET,127 (WeEn Semiconductors) exceed the minimum current rating and meet or exceed all other electrical parameters. These parts are functionally compatible for applications where the MAC228A10 is specified.

Parameter Comparison

Part Number	Manufacturer	Voltage - Off State	Current - On State (Max)	Voltage - Gate Trigger (Max)	Current - Gate Trigger (Max)	Current - Hold (Max)	Operating Temperature (Max)	Product Status
MAC228A10	onsemi	800 V	8 A	2 V	5 mA	15 mA	110°C	Obsolete
MAC228A10G	Littelfuse Inc.	800 V	8 A	2 V	5 mA	15 mA	110°C	Active
BTA310-800E,127	WeEn Semiconductors	800 V	10 A	1.5 V	10 mA	15 mA	125°C	Active
BTA312-800E,127	WeEn Semiconductors	800 V	12 A	1.5 V	10 mA	15 mA	125°C	Active
BTA312-800ET,127	WeEn Semiconductors	800 V	12 A	1.5 V	10 mA	15 mA	150°C	Active
BTA410-800ET,127	WeEn Semiconductors	800 V	10 A	1.5 V	10 mA	15 mA	125°C	Active

Engineering Selection Recommendations

Primary Selection: MAC228A10G (Littelfuse Inc.) is the recommended substitute. This part is electrically identical to the MAC228A10 and maintains all original specifications while offering active product status and RoHS3 compliance. Current inventory availability is 2197 pieces.

Secondary Selections: The BTA-series parts (BTA310-800E,127, BTA312-800E,127, BTA312-800ET,127, BTA410-800ET,127) from WeEn Semiconductors are functionally compatible alternatives. These parts exceed the current rating of the original MAC228A10 and feature improved gate trigger characteristics (lower Vgt and Igt values). All are RoHS compliant and actively manufactured. Selection among these variants depends on thermal requirements and current headroom needed for the application.

Frequently Asked Questions (FAQ)

Q: Can BTA310-800E,127 directly replace MAC228A10? A: Yes. The BTA310-800E,127 meets all minimum electrical requirements of the MAC228A10. It provides higher current capacity (10A vs. 8A) and lower gate trigger voltage (1.5V vs. 2V), making it functionally compatible. The TO-220-3 package is identical.

Q: What is the difference between BTA312-800E,127 and BTA312-800ET,127? A: Both parts are electrically identical with 12A current rating and 800V voltage rating. The primary difference is maximum operating temperature: BTA312-800E,127 is rated to 125°C while BTA312-800ET,127 is rated to 150°C. Select based on thermal environment requirements.

Q: Is MAC228A10G a direct equivalent? A: Yes. MAC228A10G is manufactured by Littelfuse Inc. and maintains identical electrical specifications to the original MAC228A10. It is the direct equivalent and preferred substitute for one-to-one replacement.

Q: Can I use a higher current-rated TRIAC as a substitute? A: Yes. Higher current ratings (10A or 12A) are acceptable substitutes for the 8A MAC228A10 in the same application, provided all other electrical parameters meet or exceed the original specifications. The TO-220-3 package remains compatible.

Q: Are all substitute parts RoHS compliant? A: MAC228A10G is RoHS3 compliant. All WeEn Semiconductors BTA-series parts listed are RoHS compliant. The original MAC228A10 is RoHS non-compliant.

Q: What is the package compatibility? A: All listed parts use the TO-220-3 package in TO-220AB supplier configuration. Physical footprint and pin configuration are identical, allowing direct PCB mounting without layout modifications.

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