MAC16CNG Equivalent & Substitute Parts

Part Overview

The MAC16CNG is a standard TRIAC thyristor manufactured by Littelfuse Inc., rated for 800V off-state voltage and 16A on-state current in a TO-220AB through-hole package. This component is designed for AC switching and power control applications requiring high voltage and moderate current handling. The part is active in production with RoHS3 compliance and unlimited moisture sensitivity rating.

Substitute parts are necessary when the original MAC16CNG is unavailable, when alternative TRIAC types offer improved performance characteristics for specific applications, or when different manufacturers' equivalents provide better supply availability or cost optimization while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Voltage - Off State	800 V
Current - On State (It (RMS)) (Max)	16 A
Voltage - Gate Trigger (Vgt) (Max)	1.5 V
Current - Gate Trigger (Igt) (Max)	35 mA
Current - Hold (Ih) (Max)	50 mA
Current - Non Rep. Surge 50, 60Hz (Itsm)	150A @ 60Hz
Operating Temperature Range	-40°C ~ 125°C (TJ)
Package / Case	TO-220-3
Mounting Type	Through Hole
Triac Type	Standard

Substitute Part Grouping Explanation

Substitution eligibility for the MAC16CNG is determined by the following critical parameters:

Primary Compatibility Criteria:

Voltage - Off State: 800V (exact match required)
Current - On State (It (RMS)): 16A minimum
Package / Case: TO-220-3 (mechanical compatibility)
Mounting Type: Through Hole

Secondary Compatibility Criteria:

Voltage - Gate Trigger (Vgt): 1.3V to 1.5V (acceptable range)
Current - Gate Trigger (Igt): 35mA to 50mA (acceptable range)
Current - Hold (Ih): 40mA to 60mA (acceptable range)
Operating Temperature: -40°C minimum to 125°C minimum

Triac Type Consideration: Standard TRIACs and Alternistor (Snubberless) TRIACs are functionally interchangeable at the electrical level. Alternistor types offer improved EMI performance and reduced snubber circuit requirements, making them suitable substitutes for standard types in the same voltage and current class.

Parts meeting these criteria are grouped as direct substitutes. Parts with lower current ratings (12A, 8A, 6A) or different voltage ratings are listed for reference but do not qualify as direct substitutes.

Parameter Comparison

Part Number	Manufacturer	Triac Type	Voltage - Off State	Current - On State (Max)	Vgt (Max)	Igt (Max)	Ih (Max)	Itsm (60Hz)	Operating Temp	Package
MAC16CNG	Littelfuse Inc.	Standard	800V	16A	1.5V	35mA	50mA	150A	-40°C ~ 125°C	TO-220AB
Q8016RH4TP	Littelfuse Inc.	Alternistor - Snubberless	800V	16A	1.3V	35mA	50mA	200A	-40°C ~ 125°C	TO-220
BTA316-800B,127	WeEn Semiconductors	Standard	800V	16A	1.5V	50mA	60mA	150A	-40°C ~ 125°C	TO-220AB
BTB16-800CWRG	STMicroelectronics	Alternistor - Snubberless	800V	16A	1.3V	35mA	35mA	168A	-40°C ~ 125°C	TO-220
T1635T-8I	STMicroelectronics	Alternistor - Snubberless	800V	16A	1.3V	35mA	45mA	126A	-40°C ~ 150°C	TO-220AB Insulated
T1635T-8T	STMicroelectronics	Alternistor - Snubberless	800V	16A	1.3V	35mA	40mA	126A	-40°C ~ 150°C	TO-220

Engineering Selection Recommendations

Direct Substitutes (Electrically and Mechanically Compatible):

The following parts are qualified substitutes for MAC16CNG based on matching voltage, current, and package specifications:

Q8016RH4TP (Littelfuse Inc., Alternistor): Same manufacturer as original. Offers improved surge current rating (200A vs 150A) and lower gate trigger voltage (1.3V vs 1.5V). Snubberless design reduces EMI. Non-isolated tab variant.
BTA316-800B,127 (WeEn Semiconductors, Standard): Maintains standard TRIAC type matching original design. Identical voltage and current ratings. Insulated tab package provides thermal isolation option.
BTB16-800CWRG (STMicroelectronics, Alternistor): 16A Snubberless TRIAC with enhanced surge rating (168A). Lower gate trigger voltage and hold current. Non-isolated tab configuration.
T1635T-8I (STMicroelectronics, Alternistor): Insulated tab variant with extended operating temperature range (-40°C to 150°C). Snubberless design with 16A rating. Suitable for thermal management applications requiring isolation.
T1635T-8T (STMicroelectronics, Alternistor): Non-isolated tab variant with extended temperature range. Snubberless technology. Equivalent electrical performance to T1635T-8I with different package configuration.

Compliance Status: All listed substitutes maintain RoHS3 compliance, REACH unaffected status, and unlimited moisture sensitivity rating (MSL 1), matching the original MAC16CNG specifications.

Frequently Asked Questions (FAQ)

Q: Can I use a 12A TRIAC as a substitute for the MAC16CNG 16A TRIAC?

A: No. The MAC16CNG is rated for 16A on-state current. Substituting a 12A rated TRIAC (such as BTA12-800BRG or BTA12-800BWRG) would reduce the maximum current handling capability and create a reliability risk in applications requiring the full 16A rating.

Q: What is the difference between a Standard TRIAC and an Alternistor (Snubberless) TRIAC?

A: Both types are functionally equivalent TRIACs with the same voltage and current ratings. Alternistor types incorporate snubberless technology, which reduces electromagnetic interference (EMI) and eliminates the need for external snubber circuits in many applications. They are direct substitutes at the electrical level.

Q: Does the package variant (TO-220AB vs TO-220) affect substitution compatibility?

A: Both TO-220AB and TO-220 packages are mechanically compatible in TO-220-3 footprints. The primary difference is the tab isolation: TO-220AB includes an insulated tab for thermal management, while TO-220 has a non-isolated tab. Selection depends on your PCB design and thermal requirements. Both are acceptable substitutes.

Q: Can I substitute a part with a lower gate trigger voltage (1.3V vs 1.5V)?

A: Yes. A lower gate trigger voltage (Vgt) is acceptable and often beneficial. It means the TRIAC requires less gate voltage to trigger, improving circuit sensitivity. Parts with Vgt of 1.3V are suitable substitutes for the original 1.5V specification.

Q: What does the extended operating temperature range (-40°C to 150°C) on some substitutes mean?

A: Some substitute parts, such as T1635T-8I and T1635T-8T, are rated for operation up to 150°C junction temperature, compared to the original MAC16CNG's 125°C maximum. This extended range provides additional thermal margin in high-temperature applications but does not affect compatibility in standard -40°C to 125°C operating environments.

Q: Are all listed substitutes in stock?

A: Inventory availability varies by part number. Refer to the inventory quantities provided in the part specifications. Q8016RH4TP (1,753 pcs), BTA316-800B,127 (22,100 pcs), BTB16-800CWRG (55,100 pcs), T1635T-8I (25,400 pcs), and T1635T-8T (1,411 pcs) are all available in quantity.

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