DZTA42Q-13 Equivalent & Substitute Parts

Part Overview

The DZTA42Q-13 is an NPN bipolar junction transistor manufactured by Diodes Incorporated, designed for general-purpose switching and amplification applications. This surface mount device operates at 300 V collector-emitter breakdown voltage with a maximum collector current of 500 mA and 1 W power dissipation capability. The part is actively produced and carries AEC-Q101 automotive qualification, making it suitable for automotive and industrial applications. Equivalent and substitute parts are identified to provide design flexibility, supply chain alternatives, and component availability options while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value	Unit
Transistor Type	NPN	—
Voltage - Collector Emitter Breakdown (Max)	300	V
Current - Collector (Ic) (Max)	500	mA
Power - Max	1	W
Frequency - Transition	50	MHz
Operating Temperature Range	-65 to 150	°C
Mounting Type	Surface Mount	—
Package / Case	SOT-223-3	—
RoHS Status	ROHS3 Compliant	—
Moisture Sensitivity Level (MSL)	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitute parts for the DZTA42Q-13 are qualified based on the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

Transistor type: NPN configuration
Voltage rating: Collector-emitter breakdown voltage of 300 V (minimum)
Current rating: Collector current capacity of 500 mA (minimum)
Frequency response: Transition frequency of 50 MHz (minimum)
Operating temperature range: -65°C to 150°C (minimum)
Saturation voltage: 500 mV @ 2 mA, 20 mA

Mechanical Compatibility Criteria:

Mounting type: Surface mount
Package: SOT-223-3 or equivalent footprint
Moisture sensitivity: MSL 1 (Unlimited)

Compliance Criteria:

RoHS3 compliance
REACH unaffected status
Active product status

The CZTA42 TR PBFREE meets all substitution criteria with identical electrical ratings and package compatibility. The substitute part demonstrates equivalent or superior performance characteristics while maintaining full compliance with automotive and industrial standards.

Parameter Comparison

Parameter	DZTA42Q-13 (Diodes Inc.)	CZTA42 TR PBFREE (Central Semiconductor)	Compatibility
Transistor Type	NPN	NPN	Identical
Voltage - Collector Emitter Breakdown (Max)	300 V	300 V	Identical
Current - Collector (Ic) (Max)	500 mA	500 mA	Identical
Vce Saturation (Max) @ Ib, Ic	500 mV @ 2 mA, 20 mA	500 mV @ 2 mA, 20 mA	Identical
Current - Collector Cutoff (Max)	100 nA (ICBO)	100 nA (ICBO)	Identical
Power - Max	1 W	2 W	Substitute rated higher
Frequency - Transition	50 MHz	50 MHz	Identical
Operating Temperature Range	-65°C to 150°C	-65°C to 150°C	Identical
Mounting Type	Surface Mount	Surface Mount	Identical
Package / Case	SOT-223-3	SOT-223	Compatible
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Identical
Moisture Sensitivity Level (MSL)	1 (Unlimited)	1 (Unlimited)	Identical
REACH Status	REACH Unaffected	REACH Unaffected	Identical

Engineering Selection Recommendations

Primary Part: DZTA42Q-13

The DZTA42Q-13 is the specified component with active product status and AEC-Q101 automotive qualification. This part is recommended for applications requiring automotive-grade reliability and traceability.

Substitute Part: CZTA42 TR PBFREE

The CZTA42 TR PBFREE from Central Semiconductor Corp is a direct electrical and mechanical substitute. This part maintains identical voltage, current, and frequency specifications while offering 2 W power dissipation compared to the 1 W rating of the primary part. Both parts carry ROHS3 compliance, MSL 1 rating, and REACH unaffected status. The substitute part is suitable for applications where supply availability of the primary part is constrained or where the higher power rating provides additional design margin.

Both parts are active products with full compliance documentation and unlimited moisture sensitivity rating, ensuring compatibility in production and field deployment scenarios.

Frequently Asked Questions (FAQ)

Q: Can the CZTA42 TR PBFREE be used as a direct replacement for the DZTA42Q-13?

A: Yes. Both parts are NPN transistors with identical collector-emitter breakdown voltage (300 V), collector current rating (500 mA), saturation voltage (500 mV @ 2 mA, 20 mA), transition frequency (50 MHz), and operating temperature range (-65°C to 150°C). The package footprint is compatible (SOT-223), and both parts meet ROHS3 and REACH compliance requirements.

Q: What is the difference in power dissipation between these parts?

A: The DZTA42Q-13 is rated for 1 W maximum power dissipation, while the CZTA42 TR PBFREE is rated for 2 W. The substitute part provides higher thermal capability, which can be beneficial in applications with elevated power requirements or thermal constraints.

Q: Are both parts suitable for automotive applications?

A: The DZTA42Q-13 carries AEC-Q101 automotive qualification. The CZTA42 TR PBFREE is an active product with ROHS3 compliance and REACH unaffected status. Automotive application suitability should be confirmed based on specific design requirements and qualification protocols.

Q: Do these parts have the same DC current gain characteristics?

A: The DC current gain (hFE) specifications differ between the parts. The DZTA42Q-13 specifies hFE minimum of 25 @ 1 mA, 10 V, while the CZTA42 TR PBFREE specifies hFE minimum of 40 @ 30 mA, 10 V. Both parts meet the electrical requirements for NPN switching and amplification applications within their specified operating conditions.

Q: What is the moisture sensitivity rating for both parts?

A: Both the DZTA42Q-13 and CZTA42 TR PBFREE carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions for storage, handling, or reflow processes.

Q: Are there any package differences between these parts?

A: Both parts use SOT-223 surface mount packages. The DZTA42Q-13 is specified as SOT-223-3, and the CZTA42 TR PBFREE is specified as SOT-223. These packages are mechanically and electrically compatible for PCB assembly and circuit operation.

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