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

Diodes Incorporated FZT796ATA

Name: FZT796ATA
Brand: Diodes Incorporated
SKU: FZT796ATA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: FZT796ATA

Manufacturer:: Diodes Incorporated

Category:: Single Bipolar Transistors

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

Datasheet:: FZT796ATA.pdf

Description:: TRANS PNP 200V 0.5A SOT-223-3

Quantity:: RFQ Add To RFQ list

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Inventory:14,200

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Product details

Overview

FZT796ATA from Diodes Incorporated is a 200V PNP medium-power high-gain bipolar junction transistor in SOT223 package, rated for -500mA continuous collector current, with hFE > 300 at -10mA and V_CE(sat) ≤ -300mV at -200mA/-20mA, used in high-voltage battery-powered switching and linear regulation circuits.

For engineers reviewing the FZT796ATA datasheet, FZT796ATA pinout, FZT796ATA application, or FZT796ATA equivalent, key selection criteria include breakdown voltage (BV_CEO = -200V), thermal resistance (R_θJA = 62.5°C/W on 25mm × 25mm PCB), gain linearity across -10mA to -400mA, and AEC-Q101 qualification for automotive-grade reliability.

Technical Context

This PNP transistor operates in active and saturation regions for high-side switching and amplification, with complementary NPN type FZT696B enabling push-pull designs. Its -200V BV_CEO and -7V V_EBO support operation in high-voltage bias networks and flyback snubbers.

Thermal performance is defined for two PCB mounting conditions: R_θJA = 62.5°C/W (25mm × 25mm 2oz Cu) and 41.7°C/W (50mm × 50mm 2oz Cu), with R_θJL = 12.9°C/W enabling direct lead-to-heatsink thermal path design.

Key Specifications

Parameter	Value and Actual Design Meaning
BV_CEO	-200 V - supports 170V DC bus applications with 15% margin
I_C Continuous	-500 mA - enables medium-current load control without forced cooling
hFE	300 min @ -10mA - ensures stable base drive in low-current bias circuits
V_CE(sat)	-300 mV max @ -200mA/-20mA - reduces conduction loss in saturated switch mode
R_θJA	62.5 °C/W - requires ≥25mm × 25mm 2oz copper for 2W dissipation at +25°C ambient
f_T	100 MHz - suitable for audio-frequency amplification and <1MHz switching
ESD HBM	4,000 V - meets IEC 61000-4-2 Level 3 for board-level handling robustness

Pinout & Package

SOT223 package: surface-mount, 4-pin (3 active + 1 thermal tab), molded green compound, UL 94V-0 rated, 0.112g weight, moisture sensitivity level 1.

Pin/Terminal	Circuit Role	Design Meaning
Emitter (E)	Current sink terminal	Connected to higher potential rail in high-side switch configuration
Collector (C)	Current source terminal	Typically tied to load and ground return; thermally coupled to tab
Base (B)	Control input	Receives negative current to turn on; requires series resistor for current limiting
Tab (C)	Collector-connected thermal pad	Must be soldered to copper pour for thermal management and electrical connection

Key Features

Feature	Design Value
AEC-Q101 qualified	Validated for automotive underhood temperature cycling (-55°C to +150°C) and mechanical stress
High breakdown voltage	BV_CEO and BV_CBO both ≥ -200V enable use in 120–170V DC systems
Low saturation voltage	V_CE(sat) ≤ -300mV at -200mA reduces power loss by >40% vs. standard PNP transistors
Lead-free & green	Halogen- and antimony-free, RoHS-compliant finish with <900ppm Br/Cl total
Thermal efficiency	R_θJL = 12.9°C/W allows direct heatsinking via collector tab without thermal interface material

Applications

Automotive Body Control Module

Industrial Power Supply Sequencing

Use Scenario: Controlling 12V/24V solenoid valves and relays in BCMs under load dump conditions.

IC Role / Device Role / Timing Role: High-side PNP switch providing reverse-polarity protected load activation.

Use Value: -200V BV_CEO withstands ISO 7637-2 pulse 5a (12V system: +110V transient), reducing need for external clamping.

Use Scenario: Enabling sequential power-up of isolated DC rails in programmable logic controllers.

IC Role / Device Role / Timing Role: Voltage-controlled enable switch for auxiliary 5V/3.3V LDO inputs.

Use Value: Low V_CE(sat) minimizes dropout and self-heating during sustained 300mA enable current.

Battery Management System (BMS) Cell Balancing

LED Driver Current Sink

Use Scenario: Passive cell balancing in 48V EV battery packs using resistor-based discharge paths.

IC Role / Device Role / Timing Role: Precision current sink controlled by MCU GPIO with PWM dimming capability.

Use Value: hFE ≥ 300 at -10mA ensures predictable base current for accurate 5–50mA balancing current.

Use Scenario: Constant-current sink for high-brightness LED strings in emergency lighting.

IC Role / Device Role / Timing Role: Linear current regulator operating in active region with analog dimming input.

Use Value: f_T = 100MHz supports fast PWM response (<1µs rise/fall) without oscillation.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ZXTN25050DFH	50V V_CEO, SOT89 package, hFE = 200 min @ -500mA	Limited to ≤40V systems; lower thermal resistance but insufficient for 170V bus	Select only for low-voltage, high-current linear regulation where breakdown margin is not required.
MJD2955G	TO-225 package, -70V V_CEO, -10A I_C, R_θJA = 30°C/W	Higher current capacity but inadequate voltage rating and larger footprint	Choose when mechanical robustness and heat sinking outweigh PCB space constraints and voltage requirements.

Compared with ZXTN25050DFH and MJD2955G, FZT796ATA uniquely balances 200V capability, SOT223 compactness, and AEC-Q101 compliance-making it the only option for space-constrained, high-voltage automotive or industrial switching where both reliability and voltage margin are mandatory.

Availability

FZT796ATA is available at Aetrix Electronics and suitable for automotive body control modules, industrial power supply sequencing, battery management system cell balancing, and LED driver current sink applications requiring stable component supply and long-term lifecycle assurance.

Supply support for FZT796ATA 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 and manufacturing operations across Asia and the Americas.

FZT796ATA belongs to Diodes' high-reliability bipolar transistor product line, engineered specifically for automotive and industrial applications demanding extended temperature range, high-voltage tolerance, and AEC-Q101 validation.

FAQ

Is FZT796ATA pin-compatible with FZT696B?

No. FZT796ATA is a PNP transistor with emitter-collector-base pinout (E-C-B-Tab), while FZT696B is its complementary NPN counterpart with collector-emitter-base arrangement (C-E-B-Tab). Their pin assignments are reversed; direct substitution without PCB redesign will cause circuit failure.

What is the maximum allowable PCB copper area for thermal derating?

The datasheet specifies two validated configurations: 25mm × 25mm and 50mm × 50mm 2oz copper. Using less than 25mm × 25mm violates the R_θJA = 62.5°C/W rating. No validated derating curve exists for smaller areas; thermal simulation or empirical testing is required for non-standard layouts.

Does FZT796ATA support pulsed operation above 500mA?

Yes. Absolute maximum rating I_CM = -1A applies to single pulses ≤300µs with ≤2% duty cycle. At -1A, V_CE(sat) rises to approximately -500mV, and safe operation requires strict adherence to transient thermal impedance curves shown on page 4 of DS33172 Rev. 4-2.

Can the collector tab be left floating for non-thermal applications?

No. The tab is internally connected to the collector and must be electrically and thermally anchored. Leaving it unconnected violates JEDEC SOT223 mechanical standards, risks internal bond-wire damage due to thermal stress, and invalidates AEC-Q101 qualification per test condition requirements.

FZT796ATA 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):: 500 mA

Voltage - Collector Emitter Breakdown (Max):: 200 V

Vce Saturation (Max) @ Ib, Ic:: 300mV @ 20mA, 200mA

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

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

Power - Max:: 2 W

Frequency - Transition:: 100MHz

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-223-3

FZT796ATA FAQ

1.How can I place an order for FZT796ATA through Aetrix?

Please submit a Request for Quotation (RFQ) for FZT796ATA 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 FZT796ATA reliable?

The price and inventory of FZT796ATA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for FZT796ATA is usually 5 days.

3.What payment methods are accepted for FZT796ATA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for FZT796ATA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for FZT796ATA?

FZT796ATA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your FZT796ATA 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 FZT796ATA?

For technical support, including FZT796ATA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your FZT796ATA requirements.

6.How does Aetrix verify that FZT796ATA is sourced from the original manufacturer or authorized distributors?

All FZT796ATA 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 FZT796ATA meets industry standards.

7.What is the process for return or replacement of FZT796ATA?

All FZT796ATA units undergo pre-shipment inspection (PSI). If there is an issue with FZT796ATA, 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 FZT796ATA part is unused and in its original packaging.

Return procedure for FZT796ATA:

1.Submit a request within 90 days.

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

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