FZT855TC Equivalent & Substitute Parts

Part Overview

The FZT855TC is an NPN bipolar junction transistor manufactured by Diodes Incorporated, designed for surface mount applications in the SOT-223-3 package. This device operates at 150 V collector-emitter breakdown voltage with a maximum collector current of 5 A and 3 W power dissipation capability. The FZT855TC is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and ongoing production requirements.

Key Parameters

Parameter	Value
Transistor Type	NPN
Voltage - Collector Emitter Breakdown (Max)	150 V
Current - Collector (Ic) (Max)	5 A
Power - Max	3 W
Frequency - Transition	90 MHz
Operating Temperature Range	-55°C to 150°C (TJ)
Package / Case	SOT-223-3
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution of the FZT855TC is determined by the following critical parameters: transistor type (NPN), collector-emitter breakdown voltage (150 V), collector current rating, power dissipation capability, transition frequency, operating temperature range, surface mount package compatibility, and regulatory compliance status.

The FZT855TA represents a parametric equivalent from the same manufacturer with identical electrical specifications and package designation. This substitute maintains full compatibility with the original design requirements.

The PBHV8115Z,115 and PBHV8215Z,115 are manufacturer-recommended substitutes from Nexperia USA Inc. These devices share the same 150 V breakdown voltage and SOT-223 package footprint. However, these substitutes operate at reduced maximum collector current ratings (1 A and 2 A respectively) and lower power dissipation (1.4 W and 1.45 W respectively) compared to the FZT855TC. These devices are qualified to AEC-Q100 automotive standards and are suitable for applications where the lower current and power ratings are acceptable.

Parameter Comparison

Parameter	FZT855TC	FZT855TA	PBHV8115Z,115	PBHV8215Z,115
Manufacturer	Diodes Incorporated	Diodes Incorporated	Nexperia USA Inc.	Nexperia USA Inc.
Transistor Type	NPN	NPN	NPN	NPN
Voltage - Collector Emitter Breakdown (Max)	150 V	150 V	150 V	150 V
Current - Collector (Ic) (Max)	5 A	5 A	1 A	2 A
Power - Max	3 W	3 W	1.4 W	1.45 W
Frequency - Transition	90 MHz	90 MHz	30 MHz	33 MHz
Operating Temperature (Max)	150°C (TJ)	150°C (TJ)	150°C (TJ)	150°C (TJ)
Package / Case	SOT-223-3	SOT-223-3	SOT-223	SOT-223
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

FZT855TA is the primary substitute for direct replacement of the FZT855TC. This part maintains identical electrical specifications, package configuration, and performance characteristics. The FZT855TA is in active production status with significantly higher inventory availability (27,700 pcs) compared to the obsolete FZT855TC (710 pcs). Both devices are ROHS3 compliant. The FZT855TA is suitable for all applications previously designed with the FZT855TC without circuit modification.

PBHV8115Z,115 and PBHV8215Z,115 are alternative substitutes for applications where collector current requirements do not exceed 1 A and 2 A respectively. These Nexperia devices are qualified to AEC-Q100 automotive standards and are recommended for automotive and industrial applications requiring automotive-grade qualification. The reduced power dissipation ratings (1.4 W and 1.45 W) and lower transition frequencies (30 MHz and 33 MHz) require circuit-level evaluation to confirm suitability. Both devices maintain the 150 V breakdown voltage and SOT-223 package compatibility.

Selection between FZT855TA and the Nexperia alternatives depends on application current and power requirements. For applications requiring the full 5 A collector current and 3 W power capability of the original FZT855TC, the FZT855TA is the appropriate selection. For lower-current applications, the Nexperia devices provide automotive qualification benefits.

Frequently Asked Questions (FAQ)

Q: Can the FZT855TA be used as a direct replacement for the FZT855TC?

A: Yes. The FZT855TA is a parametric equivalent with identical electrical specifications, including 150 V breakdown voltage, 5 A maximum collector current, 3 W power dissipation, 90 MHz transition frequency, and SOT-223-3 package configuration. No circuit modifications are required.

Q: What are the limitations of the PBHV8115Z,115 and PBHV8215Z,115 substitutes?

A: These devices operate at reduced maximum collector current ratings (1 A and 2 A respectively) and lower power dissipation (1.4 W and 1.45 W respectively) compared to the FZT855TC. The transition frequency is also reduced (30 MHz and 33 MHz versus 90 MHz). These limitations require circuit-level evaluation to confirm compatibility with the original application.

Q: Are the package footprints compatible between all listed substitutes?

A: The FZT855TC and FZT855TA use the SOT-223-3 package. The PBHV8115Z,115 and PBHV8215Z,115 use the SOT-223 package. Both package designations are compatible with standard SOT-223 surface mount footprints used in PCB designs.

Q: What is the difference in product status between these parts?

A: The FZT855TC is classified as obsolete, indicating discontinued production. The FZT855TA, PBHV8115Z,115, and PBHV8215Z,115 are all in active production status with current inventory availability, ensuring long-term supply chain reliability.

Q: Do all substitutes meet the same regulatory compliance requirements?

A: All listed parts are ROHS3 compliant. The PBHV8115Z,115 and PBHV8215Z,115 additionally carry AEC-Q100 automotive qualification, making them suitable for automotive applications requiring this certification. The FZT855TA does not carry automotive qualification.

Q: Which substitute should be selected for new designs?

A: For applications requiring 5 A collector current and 3 W power dissipation, the FZT855TA is the appropriate selection. For automotive applications with lower current requirements (up to 1 A or 2 A), the PBHV8115Z,115 or PBHV8215Z,115 provide automotive-grade qualification benefits.

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