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Home > Products > Discrete Semiconductor Products > Transistors > Bipolar (BJT) > Single Bipolar Transistors

Diodes Incorporated FZT792ATC

Name: FZT792ATC
Brand: Diodes Incorporated
SKU: FZT792ATC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: FZT792ATC

Manufacturer:: Diodes Incorporated

Category:: Single Bipolar Transistors

Package:: TO-261-4, TO-261AA

Datasheet:: FZT792ATC.pdf

Description:: TRANS PNP 70V 2A SOT-223-3

Quantity:: RFQ Add To RFQ list

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Inventory:6,366

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Product details

Overview

FZT792ATC from Diodes Incorporated is a 70V PNP medium-power transistor in SOT223 package, rated for -2A continuous collector current and featuring V_CE(sat) < -500mV at -1A. It delivers high DC current gain (h_FE = 200–800), 100MHz f_T, and operates across -55°C to +150°C - deployed in battery-powered load switching and automotive power management circuits.

For engineers reviewing the FZT792ATC datasheet, FZT792ATC pinout, FZT792ATC application, or FZT792ATC equivalent, key selection criteria include verified -70V V_CEO, thermal resistance R_θJA = 41.7°C/W on 50mm × 50mm 2oz copper, complementary pairing with FZT692B, and AEC-Q101 readiness for automotive-grade designs.

Technical Context

This PNP bipolar junction transistor operates in linear and saturated switching modes, with breakdown ratings of -75V V_CBO, -70V V_CEO, and -7V V_EBO. Its low saturation voltage enables efficient power control in high-side switch configurations where emitter is tied to supply rail.

The device exhibits pulsed turn-on time of 35ns and turn-off time of 750ns under -10V V_CC, -500mA I_C, and ±50mA base drive - supporting moderate-speed switching in DC-DC converters and motor drivers without requiring active base pull-down circuitry.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	-70 V - Maximum safe collector-emitter voltage before avalanche conduction in common-emitter configuration
I_C (cont.)	-2 A - Continuous collector current rating enabling direct drive of 2A loads without heatsinking on adequate PCB copper
V_CE(sat)	-0.45 V @ -1A/-25mA - Low saturation voltage reduces power loss to ≤450mW at full rated current
h_FE	200–800 - Wide DC current gain range supports stable biasing across production lots and temperature extremes
f_T	100 MHz - Sufficient bandwidth for switching up to ~10MHz with controlled rise/fall times
R_θJA	41.7 °C/W - Thermal resistance measured on 50mm × 50mm 2oz FR4, defining maximum ambient temperature for 3W dissipation
ESD HBM	4000 V - Robust electrostatic discharge immunity per JEDEC JESD22-A114 Class 3A, reducing handling sensitivity

Pinout & Package

Package: SOT223 (Type DN), surface-mount, 4-pin outline with exposed collector tab for thermal conduction and mechanical anchoring. Molded green compound, UL 94V-0 rated, 0.112g weight.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1 (Emitter)	Emitter terminal	Connected to higher potential in PNP high-side switch; carries full load current and sets bias reference
Pin 2 (Base)	Control input	Receives negative base current to saturate transistor; requires current-limiting resistor in series
Pin 3 (Collector)	Output / Power return	Internally connected to exposed metal tab; must be soldered to ≥50mm² copper pour for thermal management
Pin 4 (Collector Tab)	Collector extension	Electrically and thermally identical to Pin 3; primary heat path to PCB; not electrically isolated

Key Features

Feature	Design Value
High-voltage PNP structure	Supports -70V rail operation in industrial battery systems and 24V/48V automotive subsystems
Low V_CE(sat) at high current	Enables <0.5V drop at -1A, minimizing conduction loss in always-on power rails
Complementary NPN pairing	FZT692B shares identical SOT223 footprint and thermal profile for matched push-pull designs
AEC-Q101 qualification support	Manufactured in IATF 16949-certified facilities; PPAP-capable for automotive functional safety applications
Green, halogen-free construction	Meets RoHS 3 (2015/863/EU) and Diodes' "Green" standard: Br+Cl <1500ppm, Sb <1000ppm

Applications

Battery Management Systems

Automotive Lighting Control

Use Scenario: High-side current limiting and reverse-polarity protection in 12V/24V lead-acid and LiFePO₄ battery packs.

IC Role / Device Role / Timing Role: PNP switch controlling charge/discharge path; operates in saturation for minimal voltage drop during normal conduction.

Use Value: -70V V_CEO withstands load-dump transients; -2A rating supports >10W load switching without external heatsink.

Use Scenario: PWM-controlled tail-light and brake-light dimming in vehicle body control modules.

IC Role / Device Role / Timing Role: Medium-power driver stage amplifying microcontroller GPIO output to drive LED strings.

Use Value: 100MHz f_T and 35ns t_on ensure clean 1–10kHz PWM edges; -0.45V V_CE(sat) minimizes thermal rise at 500mA LED current.

Industrial Power Sequencing

DC-DC Converter Enable Circuit

Use Scenario: Controlled power-up sequencing of multiple voltage rails in programmable logic controllers and sensor nodes.

IC Role / Device Role / Timing Role: Voltage-level translator and current amplifier enabling precise timing between 3.3V logic and 12V/24V auxiliary supplies.

Use Value: Wide h_FE range (200–800) ensures reliable turn-on across temperature (-55°C to +150°C) and process variation.

Use Scenario: Enabling high-current buck converter ICs via logic-level compatible enable signal conditioning.

IC Role / Device Role / Timing Role: Inverting level shifter converting 3.3V/5V enable signal to -12V/-24V gate drive for external PMOS high-side switch.

Use Value: -7V V_EBO allows safe operation with emitter tied to 24V rail while base driven by 5V MCU; robust ESD HBM (4kV) prevents latch-up during hot-plug events.

Equivalent & Alternatives

The following parts are listed as comparable options for similar PNP medium-power transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ZXT792MA	Higher V_CEO (-80V), lower h_FE (100–300), same SOT223 package	Preferred in 48V telecom systems requiring extra voltage margin; less suitable for precision biasing due to narrower gain range	Select when absolute voltage headroom >10V is critical and gain stability is secondary
MJD2955T4G	TO-220 package, -60V V_CEO, -10A I_C, higher R_θJA (65°C/W)	Used in high-current linear regulators and audio amplifiers; incompatible footprint and thermal interface	Choose only when board space permits TO-220 and >5A peak current is required

Compared with ZXT792MA and MJD2955T4G, FZT792ATC offers optimal balance of voltage rating, gain consistency, thermal performance in SOT223, and automotive qualification readiness - making it preferred for space-constrained, thermally sensitive, and automotive-compliant designs.

Availability

FZT792ATC is available at Aetrix Electronics and suitable for battery management systems, automotive lighting control, and industrial power sequencing requiring stable component supply, long-term lifecycle assurance, and AEC-Q101-aligned manufacturing traceability.

Supply support for FZT792ATC includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, headquartered in Plano, Texas, with design, manufacturing, and sales operations across Asia, Europe, and North America.

The FZT792ATC belongs to Diodes' high-reliability power transistor product line, engineered specifically for automotive, industrial, and battery-powered applications demanding robust voltage capability, thermal efficiency, and environmental compliance.

FAQ

What is the maximum allowable junction temperature for FZT792ATC?

The FZT792ATC has an operating junction temperature range of -55°C to +150°C. Its absolute maximum T_J is +150°C, validated under steady-state conditions with specified PCB copper area and ambient airflow. Derating begins above +25°C ambient per the published thermal curves, and sustained operation above +150°C risks permanent parametric shift or bond-wire failure.

Is FZT792ATC pin-compatible with FZT692B?

No - FZT792ATC (PNP) and FZT692B (NPN) are complementary devices with identical SOT223 package outlines and pin assignments (Emitter-Base-Collector-Tab), but opposite polarity. Their pinouts match mechanically and thermally, enabling direct layout reuse in push-pull or H-bridge designs, though biasing networks must be inverted.

Does FZT792ATC require a heatsink in typical applications?

A dedicated heatsink is not required if mounted on ≥50mm² of 2oz copper per the datasheet's R_θJA = 41.7°C/W condition. At 3W dissipation and +25°C ambient, junction temperature reaches ~155°C - exceeding rating. Therefore, for continuous 2A operation, use of the exposed collector tab soldered to large copper area is mandatory; no additional heatsink is needed unless ambient exceeds +50°C or power exceeds 1.2W.

Can FZT792ATC be used in linear regulator pass transistor applications?

Yes - its -70V V_CEO, -2A I_C, and low V_CE(sat) support use as a series pass element in adjustable linear regulators. However, its 100MHz f_T and lack of built-in compensation limit bandwidth; external frequency compensation and thermal foldback circuitry are required for stability and safe operation under varying load and input conditions.

FZT792ATC Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: TO-261-4, TO-261AA

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Transistor Type:: PNP

Current - Collector (Ic) (Max):: 2 A

Voltage - Collector Emitter Breakdown (Max):: 70 V

Vce Saturation (Max) @ Ib, Ic:: 500mV @ 200mA, 2A

Current - Collector Cutoff (Max):: 100nA (ICBO)

DC Current Gain (hFE) (Min) @ Ic, Vce:: 300 @ 10mA, 2V

Power - Max:: 2 W

Frequency - Transition:: 160MHz

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-223-3

FZT792ATC FAQ

1.How can I place an order for FZT792ATC through Aetrix?

Please submit a Request for Quotation (RFQ) for FZT792ATC on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for FZT792ATC reliable?

The price and inventory of FZT792ATC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FZT792ATC is usually 5 days.

3.What payment methods are accepted for FZT792ATC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FZT792ATC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for FZT792ATC?

FZT792ATC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your FZT792ATC order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for FZT792ATC?

For technical support, including FZT792ATC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FZT792ATC requirements.

6.How does Aetrix verify that FZT792ATC is sourced from the original manufacturer or authorized distributors?

All FZT792ATC products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that FZT792ATC meets industry standards.

7.What is the process for return or replacement of FZT792ATC?

All FZT792ATC units undergo pre-shipment inspection (PSI). If there is an issue with FZT792ATC, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The FZT792ATC part is unused and in its original packaging.

Return procedure for FZT792ATC:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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