QJ8016NH5RP Equivalent & Substitute Parts

Part Overview

The QJ8016NH5RP is an Alternistor-type TRIAC manufactured by Littelfuse Inc., rated for 800V off-state voltage and 16A on-state current in a surface mount TO-263 (D2PAK) package. This snubberless design is classified as Active product status with full RoHS3 compliance. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or application-specific requirements within the specified parameter ranges.

Key Parameters

Parameter	Value	Unit
Voltage - Off State	800	V
Current - On State (It (RMS)) (Max)	16	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 150	°C
Package / Case	TO-263-3, D2PAK	-
Mounting Type	Surface Mount	-
RoHS Status	RoHS3 Compliant	-

Substitute Part Grouping Explanation

Substitution of the QJ8016NH5RP is permissible when the replacement part meets the following criteria:

Voltage rating equal to or greater than 800V off-state voltage
On-state current rating equal to or greater than 16A RMS
Gate trigger voltage (Vgt) within acceptable circuit design margins
Gate trigger current (Igt) and hold current (Ih) compatible with control circuitry
Identical or compatible package footprint (TO-263-3, D2PAK)
Surface mount configuration
Operating temperature range encompassing the application requirements
Compliance with applicable regulatory standards (RoHS, REACH, ECCN)

The BTA225B-800B,118 qualifies as a manufacturer-recommended substitute based on these parameters.

Parameter Comparison

Parameter	QJ8016NH5RP (Main Part)	BTA225B-800B,118 (Substitute)	Unit
Manufacturer	Littelfuse Inc.	WeEn Semiconductors	-
Triac Type	Alternistor - Snubberless	Standard	-
Voltage - Off State	800	800	V
Current - On State (It (RMS)) (Max)	16	25	A
Voltage - Gate Trigger (Vgt) (Max)	1.3	1.5	V
Current - Non Rep. Surge 50Hz (Itsm)	167	190	A
Current - Non Rep. Surge 60Hz (Itsm)	200	209	A
Current - Gate Trigger (Igt) (Max)	50	50	mA
Current - Hold (Ih) (Max)	50	60	mA
Operating Temperature (TJ)	-40 to 150	125 (Max)	°C
Package / Case	TO-263-3, D2PAK	TO-263-3, D2PAK	-
Mounting Type	Surface Mount	Surface Mount	-
RoHS Status	RoHS3 Compliant	RoHS Compliant	-
Product Status	Active	Active	-

Engineering Selection Recommendations

The BTA225B-800B,118 is suitable as a substitute for the QJ8016NH5RP based on the following engineering factors:

Both parts maintain identical 800V off-state voltage rating, ensuring compatibility with the same circuit voltage class
The BTA225B-800B,118 provides 25A on-state current capacity, exceeding the 16A requirement of the QJ8016NH5RP, offering design margin
Gate trigger parameters (Vgt 1.5V, Igt 50mA) remain within acceptable control circuit tolerances
Identical TO-263-3 D2PAK package and surface mount configuration ensure mechanical and thermal compatibility
Both parts carry Active product status and RoHS compliance, meeting current regulatory requirements
The substitute part demonstrates higher surge current ratings (190A/209A vs. 167A/200A), providing additional transient protection margin

The primary design consideration is the difference in TRIAC type: the QJ8016NH5RP is a snubberless Alternistor design, while the BTA225B-800B,118 is a standard TRIAC. Circuit designs relying on snubberless characteristics must be evaluated for compatibility with standard TRIAC behavior.

Frequently Asked Questions (FAQ)

Q: Can the BTA225B-800B,118 directly replace the QJ8016NH5RP in existing PCB layouts?

A: Yes. Both parts use identical TO-263-3 D2PAK packaging with the same pinout and footprint. No PCB modifications are required for mechanical or thermal mounting.

Q: What is the difference between an Alternistor-type TRIAC and a standard TRIAC?

A: The QJ8016NH5RP is a snubberless Alternistor design optimized for reduced EMI and simplified circuit design without external snubber networks. The BTA225B-800B,118 is a standard TRIAC that may require snubber circuits in certain applications. Circuit performance characteristics may differ; application-specific validation is necessary.

Q: Are the gate trigger parameters compatible with existing control circuits?

A: The gate trigger voltage (Vgt) increases from 1.3V to 1.5V, and hold current (Ih) increases from 50mA to 60mA. These changes remain within typical control circuit design margins for 800V TRIAC applications. Verify gate drive circuit specifications for your specific application.

Q: Does the higher on-state current rating (25A vs. 16A) affect circuit operation?

A: No. The higher current rating provides additional design margin and does not negatively impact circuits designed for 16A operation. The part will operate safely at or below the design current level.

Q: Are both parts RoHS compliant?

A: Yes. The QJ8016NH5RP is RoHS3 compliant, and the BTA225B-800B,118 is RoHS compliant. Both meet current environmental and regulatory requirements.

Q: What is the maximum operating temperature difference between these parts?

A: The QJ8016NH5RP specifies -40°C to 150°C junction temperature range. The BTA225B-800B,118 specifies 125°C maximum junction temperature. For applications requiring operation above 125°C, the QJ8016NH5RP is required.

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