QK006N5TP Equivalent & Substitute Parts

Part Overview

The QK006N5TP is a standard TRIAC manufactured by Littelfuse Inc., rated for 1 kV off-state voltage and 6 A on-state current in a Surface Mount TO-263 (D2PAK) package. This component is actively produced and widely used in AC switching applications requiring galvanic isolation and bidirectional control. Substitute parts are identified when equivalent electrical ratings and mechanical compatibility are maintained within the specified parameter tolerances for this thyristor category.

Key Parameters

Parameter	Value	Unit
Voltage - Off State	1	kV
Current - On State (It (RMS)) (Max)	6	A
Voltage - Gate Trigger (Vgt) (Max)	1.3	V
Current - Gate Trigger (Igt) (Max)	50	mA
Current - Hold (Ih) (Max)	50	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 QK006N5TP is determined by the following criteria:

Voltage Rating: Off-state voltage must be ≥ 1 kV to maintain circuit protection margins
Current Rating: On-state current (It (RMS)) must be ≥ 6 A to support the application load
Gate Trigger Parameters: Vgt and Igt must remain within acceptable ranges to ensure reliable gate control with existing drive circuitry
Package Compatibility: Surface Mount TO-263 (D2PAK) package with identical pinout (2 Leads + Tab)
Temperature Range: Operating temperature capability must cover -40°C to 125°C minimum
Compliance: RoHS3 compliance required for regulatory alignment

The BTA208B-1000C,118 meets these substitution criteria with equivalent voltage and package specifications, while providing higher current capacity (8 A vs. 6 A), which represents an upward-compatible alternative.

Parameter Comparison

Parameter	QK006N5TP (Main)	BTA208B-1000C,118 (Substitute)	Compatibility
Manufacturer	Littelfuse Inc.	WeEn Semiconductors	Different manufacturer
Voltage - Off State	1 kV	1 kV	Equivalent
Current - On State (It (RMS)) (Max)	6 A	8 A	Substitute rated higher
Voltage - Gate Trigger (Vgt) (Max)	1.3 V	1.5 V	Within acceptable range
Current - Gate Trigger (Igt) (Max)	50 mA	35 mA	Substitute requires less gate current
Current - Hold (Ih) (Max)	50 mA	50 mA	Equivalent
Operating Temperature (Max)	125°C	125°C	Equivalent
Package / Case	TO-263-3, D2PAK	TO-263-3, D2PAK	Identical package
Mounting Type	Surface Mount	Surface Mount	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Product Status	Active	Active	Both actively produced

Engineering Selection Recommendations

The BTA208B-1000C,118 is a direct substitute for the QK006N5TP based on matching voltage class (1 kV), identical package geometry (TO-263-3, D2PAK), and equivalent thermal operating range (125°C maximum junction temperature). Both components maintain ROHS3 compliance and active production status.

The substitute part provides higher on-state current capacity (8 A vs. 6 A), which does not create compatibility issues in applications designed for the 6 A rating. The gate trigger voltage specification (1.5 V vs. 1.3 V) remains within typical gate drive circuit tolerances. The lower gate trigger current requirement (35 mA vs. 50 mA) of the substitute may reduce drive circuit loading.

Selection between these parts should be based on availability, lead time, and cost considerations, as both meet the electrical and mechanical requirements for this application category.

Frequently Asked Questions (FAQ)

Q: Can the BTA208B-1000C,118 be used as a direct replacement for the QK006N5TP in existing PCB designs?

A: Yes. Both components use identical TO-263-3 (D2PAK) package geometry with the same pinout (2 Leads + Tab). No PCB layout modifications are required.

Q: What is the significance of the higher current rating (8 A vs. 6 A) on the substitute part?

A: The substitute part is rated for higher on-state current, making it suitable for applications requiring up to 8 A. In circuits designed for 6 A operation, this higher rating provides additional thermal margin and does not create compatibility issues.

Q: Are there differences in gate drive requirements between these parts?

A: The substitute part requires lower gate trigger current (35 mA vs. 50 mA) and has a slightly higher gate trigger voltage (1.5 V vs. 1.3 V). Existing gate drive circuits designed for the QK006N5TP will operate the substitute part within specification.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the QK006N5TP and BTA208B-1000C,118 are ROHS3 compliant and maintain equivalent environmental and regulatory certifications for this component category.

Q: What packaging formats are available for these parts?

A: The QK006N5TP is supplied in Tube packaging, while the BTA208B-1000C,118 is supplied in Tape & Reel (TR) format. Both formats are suitable for automated assembly processes.

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