Q6015N5TP TRIAC 600V 15A TO-263 Equivalent & Substitute Parts

Part Overview

The Q6015N5TP is a standard TRIAC manufactured by Littelfuse Inc., rated for 600V off-state voltage and 15A on-state current in a surface mount TO-263 (D2PAK) package. This component is actively produced and widely used in AC switching applications requiring reliable thyristor performance across industrial and consumer electronics. Substitute parts are identified based on matching electrical specifications and mechanical compatibility within the D2PAK package form factor, enabling direct replacement in circuit designs where the primary part becomes unavailable or when alternative sourcing is required.

Key Parameters

Parameter	Value	Unit
Voltage - Off State	600	V
Current - On State (It RMS) Max	15	A
Voltage - Gate Trigger (Vgt) Max	2	V
Current - Gate Trigger (Igt) Max	50	mA
Current - Hold (Ih) Max	70	mA
Operating Temperature Range	-40 to 125	°C
Package / Case	TO-263-3, D2PAK	—
Mounting Type	Surface Mount	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution eligibility for the Q6015N5TP is determined by the following criteria:

Voltage Rating: Off-state voltage must be 600V or higher to maintain electrical safety margins
Current Rating: On-state current (It RMS) must meet or exceed 15A to handle design load requirements
Package Compatibility: All substitutes must use TO-263-3 D2PAK package with identical pinout and thermal characteristics
Gate Trigger Parameters: Vgt and Igt specifications must be compatible with existing gate drive circuitry
Temperature Range: Operating temperature range must encompass the application's thermal requirements
Compliance: All parts must maintain ROHS3 compliance and equivalent regulatory status

The substitute parts listed below are grouped by current rating and gate trigger characteristics, with lower current ratings (10A–12A) suitable for applications with reduced load requirements, and higher current ratings (16A) for applications requiring increased current capacity.

Parameter Comparison

Part Number	Manufacturer	Triac Type	Voltage (V)	Current (A)	Vgt Max (V)	Igt Max (mA)	Ih Max (mA)	Temp Range (°C)	Package
Q6015N5TP	Littelfuse Inc.	Standard	600	15	2	50	70	-40 to 125	TO-263-3
T1050H-6G	STMicroelectronics	Alternistor - Snubberless	600	10	1	50	75	-40 to 150	D2PAK
T1050H-6G-TR	STMicroelectronics	Alternistor - Snubberless	600	10	1	50	75	-40 to 150	D2PAK
T1235-600G	STMicroelectronics	Alternistor - Snubberless	600	12	1.3	35	35	-40 to 125	D2PAK
T1235-600G-TR	STMicroelectronics	Alternistor - Snubberless	600	12	1.3	35	35	-40 to 125	D2PAK
T1235H-6G-TR	STMicroelectronics	Alternistor - Snubberless	600	12	1	35	35	-40 to 150	D2PAK
T1250-600G-TR	STMicroelectronics	Alternistor - Snubberless	600	12	1.3	50	50	-40 to 125	D2PAK
T1250H-6G	STMicroelectronics	Alternistor - Snubberless	600	12	1	50	75	-40 to 150	D2PAK
T1250H-6G-TR	STMicroelectronics	Alternistor - Snubberless	600	12	1	50	75	-40 to 150	D2PAK
T1635-600G	STMicroelectronics	Alternistor - Snubberless	600	16	1.3	35	35	-40 to 125	D2PAK
T1635-600G-TR	STMicroelectronics	Alternistor - Snubberless	600	16	1.3	35	35	-40 to 125	D2PAK

Engineering Selection Recommendations

All listed substitute parts maintain active product status and ROHS3 compliance equivalent to the Q6015N5TP. Selection between substitutes depends on application current requirements and thermal operating conditions:

For applications requiring 15A current capacity: The T1635-600G and T1635-600G-TR (16A rating) provide the closest current match and are suitable direct replacements. Both variants are available in standard tube and cut tape packaging options.

For applications tolerating reduced current capacity (10A–12A): The T1050H-6G series (10A) and T1235/T1250 series (12A) are acceptable where load current does not exceed their respective ratings. These parts offer lower gate trigger voltage (1V vs. 2V) and extended temperature range options (-40°C to 150°C for H-grade variants).

For extended temperature applications: T1050H-6G, T1235H-6G-TR, T1250H-6G, and T1250H-6G-TR all support -40°C to 150°C operating range, compared to the Q6015N5TP's -40°C to 125°C specification.

Packaging considerations: Parts designated with "-TR" suffix are supplied in cut tape or tape & reel format suitable for automated assembly. Tube-packaged variants are available for manual or semi-automated placement.

Frequently Asked Questions (FAQ)

Q: Can T1050H-6G (10A) replace Q6015N5TP (15A) in all applications?

A: No. The T1050H-6G is rated for 10A maximum on-state current, while the Q6015N5TP is rated for 15A. Substitution is only valid if the application's actual load current does not exceed 10A. Exceeding this rating will cause device failure.

Q: What is the difference between T1235-600G and T1235H-6G-TR?

A: Both are 12A TRIACs with 600V rating in D2PAK package. The H-grade variant (T1235H-6G-TR) supports extended temperature range (-40°C to 150°C vs. -40°C to 125°C) and has lower gate trigger voltage (1V vs. 1.3V). The -TR suffix indicates tape & reel packaging for automated assembly.

Q: Are STMicroelectronics Alternistor parts (Snubberless) functionally equivalent to the Littelfuse standard TRIAC?

A: Both are TRIACs with identical voltage and package specifications. Alternistor technology refers to snubberless design, which may reduce EMI in certain applications. Electrical substitution is valid based on matching voltage, current, and package parameters.

Q: Can I use T1635-600G-TR (16A) as a direct replacement for Q6015N5TP (15A)?

A: Yes. The T1635-600G-TR exceeds the current rating requirement (16A vs. 15A) and maintains identical 600V voltage rating and D2PAK package. This is a valid upgrade substitute suitable for direct PCB replacement.

Q: What packaging format should I select for high-volume production?

A: Parts with "-TR" designation (cut tape or tape & reel) are optimized for automated pick-and-place assembly. Tube-packaged variants are suitable for lower-volume or manual assembly processes. Both formats contain identical electrical components.

Q: Does lower gate trigger voltage (1V vs. 2V) affect circuit compatibility?

A: Gate trigger voltage affects gate drive circuit design. Lower Vgt (1V) requires less gate drive power but may increase sensitivity to noise. Verify that existing gate drive circuitry can reliably trigger the substitute part's lower threshold without false triggering.

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