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

Diodes Incorporated FZT560QTC

Name: FZT560QTC
Brand: Diodes Incorporated
SKU: FZT560QTC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: FZT560QTC

Manufacturer:: Diodes Incorporated

Category:: Single Bipolar Transistors

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

Datasheet:: FZT560QTC.pdf

Description:: TRANS PNP 500V 0.15A SOT-223

Quantity:: RFQ Add To RFQ list

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Inventory:5,545

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Product details

Overview

FZT560QTC from Diodes Incorporated is a 500V PNP high-voltage transistor in SOT223 package, rated for -150mA continuous collector current and -500V collector-emitter breakdown voltage (BV_CEO), with AEC-Q101 qualification for automotive use and 4kV HBM ESD rating. It serves as a high-voltage switching element in flyback snubbers, relay drivers, and HV DC-DC bias supplies.

For engineers reviewing the FZT560QTC datasheet, FZT560QTC pinout, FZT560QTC application, or FZT560QTC equivalent, key selection criteria include verified -500V BV_CEO, -200mV V_CE(sat) at -20mA/-2mA, thermal resistance of 41.7°C/W on 50mm×50mm copper, and IATF 16949 manufacturing compliance.

Technical Context

This PNP bipolar junction transistor operates in linear or saturated switching modes with guaranteed -500V blocking capability and 60MHz f_T for moderate-speed switching. Its low V_CE(sat) (-500mV max at -50mA/-10mA) enables efficient conduction in high-side switch configurations where emitter is tied to positive rail.

The device features robust thermal performance: R_θJL = 14.8°C/W to collector lead and R_θJA = 41.7°C/W on 50mm×50mm 2oz FR4, supporting 3W steady-state dissipation. It meets AEC-Q101 stress tests including HTGB, HTRB, and temperature cycling, confirming suitability for under-hood automotive modules.

Key Specifications

Parameter	Value and Actual Design Meaning
BV_CEO	-500 V - Enables direct switching of 400V DC bus without external clamping in offline power supplies.
I_C (cont.)	-150 mA - Supports sustained load switching in auxiliary bias rails and gate drive circuits.
V_CE(sat)	-500 mV max @ -50mA/-10mA - Minimizes conduction loss in high-side PNP switch applications.
f_T	60 MHz - Supports switching frequencies up to ~5–10 MHz in resonant or soft-switched topologies.
R_θJA	41.7 °C/W - Allows 3W power dissipation with ≤125°C junction rise above 25°C ambient on large PCB copper.
ESD HBM	4,000 V - Provides robust handling margin during board assembly and system integration.
h_FE	80–300 @ -50mA - Ensures reliable base drive design across production spread for predictable gain control.

Pinout & Package

Package: SOT223 (Type ZN), surface-mount, 4-pin configuration with exposed collector tab (pin 3) for thermal and electrical connection. 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 node in PNP high-side switch; carries full load current.
Pin 2 (Base)	Control input	Receives negative base current to turn on; requires current-limiting resistor for safe drive.
Pin 3 (Collector)	Output/switching node	Exposed metal tab - must be soldered to large copper pour for thermal management and low-inductance return path.
Pin 4 (Collector)	Collector terminal (second connection)	Electrically tied to Pin 3; provides redundant mechanical attachment and improved thermal transfer.

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive under-hood operation including temperature cycling, HTGB, and HTRB stress tests.
Lead-free & halogen-free	RoHS 3 compliant with <900ppm Br/Cl and <1000ppm Sb; supports eco-design and end-of-life recycling.
High BV_CEO / low V_CE(sat) trade-off	Delivers -500V blocking with only -500mV saturation drop at -50mA - rare combination for SOT223 discrete transistors.
Low R_θJL	14.8°C/W junction-to-lead thermal resistance enables direct heat sinking through collector tab without thermal pad vias.
Stable h_FE over current range	h_FE remains ≥80 from -1mA to -100mA - simplifies base drive design across wide load conditions.

Applications

Automotive HVAC Blower Control

Industrial Flyback Snubber Circuit

Use Scenario: High-side switching of 24V/48V blower motor power stage in climate control modules.

IC Role / Device Role / Timing Role: PNP high-side switch controlling motor enable path; driven by microcontroller GPIO via level-shifting resistor network.

Use Value: -500V BV_CEO prevents breakdown during inductive kickback; -500mV V_CE(sat) limits self-heating at 100mA typical operating current.

Use Scenario: Clamp diode replacement in quasi-resonant flyback converters operating at 100kHz+.

IC Role / Device Role / Timing Role: Active snubber transistor absorbing leakage energy during MOSFET turn-off transition.

Use Value: 60MHz f_T ensures fast turn-on/turn-off (<1.5µs off-time); 4kV HBM withstands layout-induced ESD during field service.

Telecom Line Interface Protection

Medical Isolated Bias Supply

Use Scenario: Overvoltage protection switch in PoE-powered line cards exposed to ±150V transients.

IC Role / Device Role / Timing Role: High-voltage crowbar element triggered by transient detector IC to short fault energy to ground.

Use Value: -500V VCBO rating exceeds IEEE 802.3af/bt surge requirements; 100nA ICBO ensures minimal leakage during standby.

Use Scenario: Auxiliary bias supply regulation in isolated CT scanner power modules requiring reinforced insulation.

IC Role / Device Role / Timing Role: Linear pass transistor regulating isolated +15V rail from transformer secondary.

Use Value: Stable h_FE (80–300) enables precise current mirror-based feedback; -55°C to +150°C TJ range supports sealed enclosure operation.

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-voltage PNP transistor applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
ZTX653	BV_CEO = -300V, V_CE(sat) = -600mV @ -50mA, SOT89 package, no AEC-Q101	Limited to ≤300V systems; lacks automotive qualification and thermal performance on FR4	Select only for non-automotive, lower-voltage (<250V) designs where cost is primary constraint.
MJD2955T4G	BV_CEO = -60V, I_C = -10A, TO-220 package, AEC-Q101 qualified	Higher current but drastically lower voltage rating; unsuitable for >100V blocking	Use only when high-current, low-voltage PNP switching is required - not a drop-in replacement for 500V operation.

Compared with ZTX653 and MJD2955T4G, FZT560QTC uniquely delivers 500V blocking in a thermally optimized SOT223 package with automotive qualification - enabling compact, high-reliability designs where both voltage and space constraints are critical.

Availability

FZT560QTC is available at Aetrix Electronics and suitable for automotive HVAC control, industrial flyback snubbers, telecom line protection, and medical isolated bias supplies requiring stable component supply and long-term lifecycle support.

Supply support for FZT560QTC 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 distribution operations across Asia, Europe, and the Americas.

The FZT560Q belongs to Diodes' high-voltage bipolar transistor product line, engineered specifically for automotive and industrial power management applications demanding ruggedness, high-voltage capability, and AEC-Q101 compliance.

FAQ

What is the maximum safe operating voltage for FZT560QTC in continuous DC applications?

The absolute maximum collector-emitter voltage (V_CEO) is -500V at T_A = +25°C. For reliable long-term operation, derate to ≤350V DC in automotive environments per AEC-Q101 stress guidelines. At elevated temperatures (≥100°C), limit V_CE to ≤300V to maintain SOA margin and prevent secondary breakdown.

Can FZT560QTC replace a MOSFET in high-side switching applications?

No - FZT560QTC is a bipolar transistor requiring continuous base current for conduction, unlike voltage-driven MOSFETs. It can replace low-speed, low-frequency PNP BJTs (e.g., in relay drivers), but not logic-level MOSFETs. Base drive must supply ≥10mA peak current for full saturation at -50mA collector load.

Is the exposed collector tab electrically isolated from other pins?

No - the exposed collector tab (Pin 3) is electrically connected to Pin 4 and forms the primary collector terminal. It must be soldered to a dedicated copper pour tied to the collector net. Do not isolate it with solder mask or thermal pads unless using an insulated mounting solution, as this compromises thermal and electrical performance.

Does FZT560QTC require a base-emitter resistor for stability?

Yes - a 10kΩ pull-down resistor between base and emitter is recommended to prevent unintended turn-on from leakage or noise. This ensures defined OFF-state behavior during MCU reset, power-up sequencing, or open-base fault conditions, especially in automotive environments with high EMI.

FZT560QTC Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: PNP

Current - Collector (Ic) (Max):: 150 mA

Voltage - Collector Emitter Breakdown (Max):: 500 V

Vce Saturation (Max) @ Ib, Ic:: 500mV @ 10mA, 50mA

Current - Collector Cutoff (Max):: 100nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 1mA, 10V

Power - Max:: 2 W

Frequency - Transition:: 60MHz

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-223

FZT560QTC FAQ

1.How can I place an order for FZT560QTC through Aetrix?

Please submit a Request for Quotation (RFQ) for FZT560QTC 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 FZT560QTC reliable?

The price and inventory of FZT560QTC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FZT560QTC is usually 5 days.

3.What payment methods are accepted for FZT560QTC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FZT560QTC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for FZT560QTC?

FZT560QTC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your FZT560QTC 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 FZT560QTC?

For technical support, including FZT560QTC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FZT560QTC requirements.

6.How does Aetrix verify that FZT560QTC is sourced from the original manufacturer or authorized distributors?

All FZT560QTC 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 FZT560QTC meets industry standards.

7.What is the process for return or replacement of FZT560QTC?

All FZT560QTC units undergo pre-shipment inspection (PSI). If there is an issue with FZT560QTC, 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 FZT560QTC part is unused and in its original packaging.

Return procedure for FZT560QTC:

1.Submit a request within 90 days.

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

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