FZT792ATC Equivalent & Substitute Parts

Part Overview

The FZT792ATC is a PNP bipolar junction transistor manufactured by Diodes Incorporated, rated for 70 V collector-emitter breakdown voltage and 2 A maximum collector current in a surface mount SOT-223-3 package. This device is classified as obsolete, necessitating identification of active equivalent and substitute components for new designs and ongoing production requirements. Equivalent parts maintain identical electrical and mechanical specifications, while substitute parts provide functional alternatives with modified performance parameters within acceptable application ranges.

Key Parameters

Parameter	Value	Unit
Transistor Type	PNP	—
Collector Current (Max)	2	A
Collector-Emitter Breakdown Voltage (Max)	70	V
Vce Saturation (Max)	500	mV @ 200mA, 2A
DC Current Gain (hFE Min)	300	@ 10mA, 2V
Power Dissipation (Max)	2	W
Transition Frequency	160	MHz
Operating Temperature Range	-55 to 150	°C
Mounting Type	Surface Mount	—
Package	SOT-223-3	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the FZT792ATC is determined by the following critical parameters: transistor type (PNP), collector-emitter breakdown voltage, maximum collector current, power dissipation capability, transition frequency, and surface mount package compatibility. Equivalent parts must match all electrical specifications and maintain the same package footprint. Substitute parts may operate at reduced voltage or current ratings, provided the application requirements do not exceed the substitute device specifications. All substitute candidates maintain PNP polarity, SOT-223 package family compatibility, and surface mount mounting type. Compliance certifications (RoHS3, REACH status) and operating temperature range are secondary selection criteria based on application environment and regulatory requirements.

Parameter Comparison

Part Number	Manufacturer	Ic (Max) A	Vce(br) V	Power W	fT MHz	hFE (Min)	Package	Status
FZT792ATC	Diodes Incorporated	2	70	2	160	300	SOT-223-3	Obsolete
FZT792ATA	Diodes Incorporated	2	70	2	160	300	SOT-223-3	Active
NZT660A	onsemi	3	60	2	75	250	SOT-223-4	Active
NZT660	Fairchild Semiconductor	3	60	2	75	100	SOT-223-4	Active
NZT751	Fairchild Semiconductor	4	60	1.2	75	40	SOT-223-4	Active
BCP52,135	Nexperia USA Inc.	1	60	1	145	63	SOT-223	Active
BCP52-10,135	Nexperia USA Inc.	1	60	1.3	145	63	SOT-223	Active
BCP52-16,115	Nexperia USA Inc.	1	60	1	145	100	SOT-223	Active
BSP31,115	NXP USA Inc.	1	60	1.3	100	100	SOT-223	Active
NSS60600MZ4T1G	onsemi	6	60	0.8	100	120	SOT-223	Active
PZT2907A,115	Nexperia USA Inc.	0.6	60	1.15	200	100	SOT-223	Active

Engineering Selection Recommendations

Direct Equivalent (Recommended Primary Replacement)

FZT792ATA is the direct parametric equivalent to FZT792ATC, manufactured by Diodes Incorporated with identical electrical specifications (2 A, 70 V, 2 W, 160 MHz, hFE 300). This part is active in production with ROHS3 compliance and unlimited moisture sensitivity rating. Selection of FZT792ATA eliminates design re-qualification requirements and maintains full backward compatibility.

Functional Substitutes (Reduced Voltage Rating)

NZT660A and NZT660 operate at 60 V collector-emitter breakdown voltage (10 V reduction from FZT792ATC) with 3 A maximum collector current and 2 W power dissipation. Both devices maintain surface mount SOT-223 package compatibility and -55°C to 150°C operating temperature range. NZT660A is manufactured by onsemi with active product status and ROHS3 compliance. NZT660 is manufactured by Fairchild Semiconductor with active status. These substitutes are suitable for applications where 60 V voltage rating is acceptable.

Functional Substitutes (Reduced Current Rating)

BCP52 series devices (BCP52,135, BCP52-10,135, BCP52-16,115) and BSP31,115 operate at 1 A maximum collector current with 60 V breakdown voltage. These parts are manufactured by Nexperia USA Inc. and NXP USA Inc., respectively, with active product status and automotive-grade qualifications (AEC-Q100). These substitutes are suitable for applications requiring reduced current handling with maintained voltage rating.

Functional Substitutes (Increased Current Rating)

NSS60600MZ4T1G is manufactured by onsemi with 6 A maximum collector current, 60 V breakdown voltage, and 800 mW power dissipation. This device provides increased current capability at reduced voltage rating and is suitable for high-current, lower-voltage applications.

Functional Substitutes (Reduced Current Rating, Higher Frequency)

PZT2907A,115 is manufactured by Nexperia USA Inc. with 600 mA maximum collector current, 60 V breakdown voltage, and 200 MHz transition frequency. This device provides higher frequency performance at significantly reduced current rating and is suitable for high-frequency, low-current signal applications.

Frequently Asked Questions (FAQ)

Q: Can FZT792ATA directly replace FZT792ATC without circuit modification?

A: Yes. FZT792ATA is a direct parametric equivalent with identical electrical specifications and package footprint. No circuit modification is required.

Q: What is the primary limitation when substituting with NZT660A or NZT660?

A: The collector-emitter breakdown voltage is reduced from 70 V to 60 V. Substitution is valid only if the application maximum supply voltage does not exceed 60 V.

Q: Can BCP52 series devices replace FZT792ATC in all applications?

A: No. BCP52 series devices are limited to 1 A maximum collector current, compared to 2 A for FZT792ATC. Substitution is valid only if the application current requirement does not exceed 1 A.

Q: Are all substitute parts RoHS3 compliant?

A: All listed substitute parts are RoHS3 compliant. Compliance status is provided in the detailed specifications for each device.

Q: What is the difference between SOT-223-3 and SOT-223-4 packages?

A: SOT-223-3 contains three leads (Base, Collector, Emitter), while SOT-223-4 contains four leads with an additional tab for thermal management. Both packages are mechanically compatible with standard SOT-223 footprints, though SOT-223-4 provides improved thermal performance.

Q: Which substitute offers the best frequency performance?

A: PZT2907A,115 provides 200 MHz transition frequency, exceeding the FZT792ATC specification of 160 MHz. However, this device is limited to 600 mA collector current.

Q: Are automotive-grade qualifications available for substitutes?

A: Yes. BCP52 series devices (BCP52,135, BCP52-10,135, BCP52-16,115) and BSP31,115 carry AEC-Q100 automotive qualification. These devices are suitable for automotive applications requiring grade certification.

Q: What is the operating temperature range for all listed parts?

A: FZT792ATC and most substitutes operate from -55°C to 150°C. PZT2907A,115, BCP52 series, and BSP31,115 specify maximum junction temperature of 150°C without explicit minimum temperature statement in provided data.

Q: Can NSS60600MZ4T1G be used in applications requiring 2 A at 70 V?

A: No. NSS60600MZ4T1G is limited to 60 V breakdown voltage and 800 mW power dissipation. At 2 A collector current, this device would exceed power dissipation limits.

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