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

Diodes Incorporated ZX5T951GQTC

Name: ZX5T951GQTC
Brand: Diodes Incorporated
SKU: ZX5T951GQTC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZX5T951GQTC

Manufacturer:: Diodes Incorporated

Category:: Single Bipolar Transistors

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

Datasheet:: ZX5T951GQTC.pdf

Description:: TRANS PNP 60V 5.5A SOT-223-3

Quantity:: RFQ Add To RFQ list

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Inventory:3,876

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Product details

Overview

ZX5T951GQTC from Diodes Incorporated is a 60V PNP medium-power bipolar junction transistor in SOT223 package, rated for -5.5A continuous collector current, -70mV V_CE(sat) at -1A, and AEC-Q101 qualified for automotive use in gate drivers and power switches.

For engineers reviewing the ZX5T951GQTC datasheet, ZX5T951GQTC pinout, ZX5T951GQTC application, or ZX5T951GQTC equivalent, this part supports high-current switching with low saturation voltage, stable gain up to -10A, and IATF16949-manufactured reliability in DC-DC converters and motor control circuits.

Technical Context

This PNP BJT operates with a minimum BV_CEO of -60V and delivers h_FE ≥ 100 at -10A/−1V, enabling robust current amplification in high-side switching configurations. Its low R_SAT of 39mΩ and fast switching (t_on = 39ns, t_off = 370ns) support efficient power path control in pulsed-load applications.

The device features complementary pairing with ZX5T851GQ (NPN), thermal resistance R_θJA = 42°C/W on 52mm × 52mm 2oz Cu PCB, and ESD ratings of 4kV HBM - all validated under automotive-grade change control and PPAP-capable production.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	-60V - Withstands reverse collector-emitter voltage in high-side switch configurations without breakdown.
I_C (cont.)	-5.5A - Supports sustained load current in motor drivers and charging circuits without thermal derating.
V_CE(sat)	< -70mV @ -1A - Minimizes conduction loss and self-heating during active switching in power stages.
h_FE	≥ 45 @ -5A - Ensures reliable base drive margin and gain stability across wide operating current range.
R_θJA	42°C/W - Enables 3.0W dissipation at +25°C ambient on standard FR4 layout, critical for thermally constrained modules.
t_off	370ns - Limits switching transition time to reduce overlap losses in synchronous rectifier or half-bridge topologies.
ESD HBM	4000V - Provides handling robustness during automated assembly and board-level integration.

Pinout & Package

Package: SOT223 - Surface-mount plastic case with exposed collector tab for thermal enhancement; UL 94V-0 rated, moisture sensitivity level 1, 0.112g weight.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	Current sink terminal	Connected to system ground or low-side return path; carries full load current in common-emitter configuration.
2 (Base)	Control input	Receives negative bias current to turn on PNP; requires current-limiting resistor for safe drive from logic or controller outputs.
3 (Collector)	Power output node	Connected to high-voltage rail; electrically and thermally tied to exposed metal tab for heat dissipation.
Tab (Collector)	Thermal & electrical connection	Must be soldered to copper pour for effective junction-to-board thermal transfer; not isolated from collector potential.

Key Features

Feature	Design Value
AEC-Q101 qualification	Validated for automotive temperature range (−55°C to +150°C) and mechanical stress per JEDEC standards.
Low V_CE(sat) & R_SAT	−70mV @ −1A and 39mΩ enable <1W conduction loss at 5A, reducing heatsink requirements.
High h_FE at high current	h_FE ≥ 10 @ −10A ensures usable current gain even near maximum rating, easing base drive design.
Complementary NPN pairing	ZX5T851GQ available for matched push-pull or H-bridge designs with symmetrical switching behavior.
Green, RoHS-compliant construction	Halogen- and antimony-free molding compound (<900ppm Br/Cl, <1000ppm Sb) meets global environmental compliance mandates.

Applications

DC-DC Converters

MOSFET & IGBT Gate Drivers

Use Scenario: High-efficiency buck converter output stage in automotive ADAS power supplies.

IC Role / Device Role / Timing Role: PNP switch controlling synchronous rectifier timing and current sinking during low-side conduction phase.

Use Value: Low V_CE(sat) reduces conduction loss by >30% vs. standard PNP transistors, improving overall converter efficiency at 5A load.

Use Scenario: Active pull-down stage in isolated gate driver IC output stage for 600V IGBTs.

IC Role / Device Role / Timing Role: Fast-turn-off current sink that clamps gate voltage below threshold during turn-off transition.

Use Value: 370ns t_off and −120mV V_CE(sat) at −2A ensure rapid, low-loss gate discharge and minimal Miller plateau dwell time.

Charging Circuits

Motor Control

Use Scenario: Reverse-polarity protection and current limiting in 12V/24V battery charging modules.

IC Role / Device Role / Timing Role: High-side series pass element controlled by charge management MCU to regulate input current flow.

Use Value: −60V V_CEO withstands load dump transients up to ISO 7637-2 Pulse 5a, eliminating need for external TVS.

Use Scenario: Directional current control in brushed DC motor H-bridge half-bridge leg.

IC Role / Device Role / Timing Role: High-side PNP switch enabling bidirectional current sourcing/sinking when paired with NPN complement.

Use Value: Matched h_FE and V_CE(sat) with ZX5T851GQ ensures balanced on-resistance and thermal distribution across bridge legs.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ZX5T951GQ	Same die, identical specs - TC suffix denotes tape-and-reel packaging (4000 pcs/reel).	No functional difference; TC variant optimized for automated SMT placement.	Select ZX5T951GQTC for volume production requiring reel-fed pick-and-place compatibility.
MJD44H11T4G	Higher V_CEO (−80V), lower h_FE (20–100 @ −5A), larger TO-220 package, no AEC-Q101 qualification.	Suitable for industrial non-automotive power supplies where qualification and footprint are secondary.	Choose only if higher voltage rating is required and automotive qualification is unnecessary.

Compared with ZX5T951GQTC, the base part ZX5T951GQ offers identical electrical performance but differs only in packaging format, while MJD44H11T4G trades automotive compliance and SOT223 compactness for higher voltage headroom and legacy through-hole mounting.

Availability

ZX5T951GQTC is available at Aetrix Electronics and suitable for DC-DC converters, MOSFET gate drivers, and automotive motor control systems requiring stable component supply, AEC-Q101 assurance, and SOT223 thermal performance.

Supply support for ZX5T951GQTC 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 the Americas.

The ZX5T951GQ belongs to Diodes' automotive-qualified power transistor product line, engineered specifically for high-reliability, high-current switching in engine control units, body electronics, and ADAS power subsystems.

FAQ

What is the maximum allowable junction temperature for ZX5T951GQTC?

The absolute maximum junction temperature is +150°C, with continuous operation permitted from −55°C to +150°C. Derating begins at +25°C ambient, reducing maximum power dissipation by 24mW/°C on a 52mm × 52mm 2oz Cu PCB, ensuring safe thermal operation under sustained load conditions.

Is ZX5T951GQTC pin-compatible with other SOT223 PNP transistors?

Yes - ZX5T951GQTC uses standard SOT223 pinout (Emitter-Base-Collector with collector tab), matching industry-standard footprints. However, electrical parameters such as h_FE, V_CE(sat), and switching speed differ significantly across vendors, so direct substitution requires validation against circuit timing and gain requirements.

Does ZX5T951GQTC require a heatsink in typical applications?

Not for ≤2.5W continuous dissipation on a 52mm × 52mm 2oz Cu PCB, as its R_θJA of 42°C/W keeps junction temperature within limits. At full 3.0W rating, a minimal copper pour (≥250 mm²) under the collector tab suffices; forced-air or extruded heatsinks are unnecessary unless ambient exceeds +70°C or duty cycle exceeds 50%.

Can ZX5T951GQTC be used in linear regulator applications?

No - it is optimized for switching operation, not linear regulation. Its low V_CE(sat) and high f_T (120MHz) indicate fast-switching design, and h_FE roll-off above −5A and thermal limitations make it unsuitable for stable, low-noise linear pass element use where gain linearity and SOA robustness are critical.

ZX5T951GQTC 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):: 5.5 A

Voltage - Collector Emitter Breakdown (Max):: 60 V

Vce Saturation (Max) @ Ib, Ic:: 250mV @ 500mA, 5A

Current - Collector Cutoff (Max):: 20nA

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 2A, 1V

Power - Max:: 1.6 W

Frequency - Transition:: 120MHz

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-223-3

ZX5T951GQTC FAQ

1.How can I place an order for ZX5T951GQTC through Aetrix?

Please submit a Request for Quotation (RFQ) for ZX5T951GQTC 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 ZX5T951GQTC reliable?

The price and inventory of ZX5T951GQTC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZX5T951GQTC is usually 5 days.

3.What payment methods are accepted for ZX5T951GQTC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZX5T951GQTC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZX5T951GQTC?

ZX5T951GQTC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZX5T951GQTC 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 ZX5T951GQTC?

For technical support, including ZX5T951GQTC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZX5T951GQTC requirements.

6.How does Aetrix verify that ZX5T951GQTC is sourced from the original manufacturer or authorized distributors?

All ZX5T951GQTC 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 ZX5T951GQTC meets industry standards.

7.What is the process for return or replacement of ZX5T951GQTC?

All ZX5T951GQTC units undergo pre-shipment inspection (PSI). If there is an issue with ZX5T951GQTC, 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 ZX5T951GQTC part is unused and in its original packaging.

Return procedure for ZX5T951GQTC:

1.Submit a request within 90 days.

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

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