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

Diodes Incorporated DXT751Q-13

Name: DXT751Q-13
Brand: Diodes Incorporated
SKU: DXT751Q-13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DXT751Q-13

Manufacturer:: Diodes Incorporated

Category:: Single Bipolar Transistors

Package:: TO-243AA

Datasheet:: DXT751Q-13.pdf

Description:: TRANS PNP 60V 3A SOT-89-3

Quantity:: RFQ Add To RFQ list

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Product details

Overview

DXT751Q from Diodes Incorporated is a 60V PNP bipolar junction transistor (BJT) engineered for automotive power switching, delivering -3A continuous collector current, -60V V_CEO, and low 0.08V typical V_CE(sat) at -1A/-100mA drive-enabling efficient high-side load control in engine control units and body electronics.

For engineers reviewing the DXT751Q datasheet, DXT751Q pinout, DXT751Q application, or DXT751Q equivalent, key selection criteria include its AEC-Q101 qualification, SOT89 thermal performance (R_θJL = 6.0°C/W), -6A peak pulse capability, and complementary pairing with DXT651Q for H-bridge designs.

Technical Context

This PNP BJT operates as a high-current, low-saturation switch in DC-DC converters and motor drivers, leveraging its robust -60V V_CEO rating and 100–145 MHz f_T for stable mid-frequency switching. Its h_FE ranges from 70 to 300 across IC = -50mA to -2A, supporting both linear and saturated-mode operation.

The device uses an exposed-collector SOT89 package with R_θJL = 6.0°C/W to maximize power handling under automotive ambient conditions (-55°C to +150°C), and features <900ppm Br/Cl and <1000ppm Sb for halogen/antimony-free compliance.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	-60 V - Withstands 60V reverse emitter-collector voltage in blocking state, suitable for 48V automotive systems.
I_C (cont.)	-3 A - Supports sustained 3A load current without derating on 40mm×40mm PCB, enabling compact high-power switches.
V_CE(sat)	-0.08 V (typ.) @ -1A/-100mA - Minimizes conduction loss and heat generation in high-duty-cycle applications.
f_T	100–145 MHz - Enables reliable operation up to ~50 MHz switching in PWM-controlled power stages.
R_θJL	6.0 °C/W - Low junction-to-lead thermal resistance allows direct thermal coupling to PCB copper, improving reliability.
AEC-Q101	Qualified - Meets stress-test requirements for automotive-grade reliability including temperature cycling and HTRB.

Pinout & Package

Package: SOT89 - Surface-mount plastic package with exposed collector pad for enhanced thermal dissipation; 0.052 g mass; UL 94V-0 rated molding compound.

Pin/Terminal	Circuit Role	Design Meaning
Emitter (E)	Current source terminal	Connected to higher potential rail; carries full load current into the transistor.
Collector (C)	Current sink terminal / Thermal path	Exposed metal pad soldered to PCB copper; primary heat extraction path (R_θJL = 6.0°C/W).
Base (B)	Control input	Receives negative drive current to turn on; requires -100mA for full saturation at -1A I_C.

Key Features

Feature	Design Value
Low V_CE(sat)	0.08 V typ. at -1A ensures ≤80 mW conduction loss, reducing heatsink requirements in space-constrained modules.
AEC-Q101 qualification	Validated for automotive use per stress tests including HTGB, HTRB, and temperature cycling-no additional qualification needed for Tier-1 programs.
SOT89 thermal design	Exposed collector pad enables direct thermal transfer to PCB, achieving 2× higher power dissipation vs. standard SOT23 at same footprint.
Complementary pairing	Designed as PNP counterpart to DXT651Q (NPN), simplifying dual-transistor gate driver and half-bridge layout.

Applications

Engine Control Unit (ECU) Fuel Injector Driver

Automotive HVAC Blower Motor Control

Use Scenario: Switching 12V/2A fuel injector solenoids in closed-loop timing-critical cycles.

IC Role / Device Role / Timing Role: High-side PNP switch providing fast turn-on/turn-off (t_on/t_off ≤ 45/200 ns) with minimal voltage drop during injection pulses.

Use Value: 0.08V V_CE(sat) preserves supply headroom for precise current regulation and reduces coil self-heating.

Use Scenario: Controlling brushed DC blower motors in climate control systems with PWM duty cycles up to 95%.

IC Role / Device Role / Timing Role: High-side power switch handling 3A continuous current and 6A surge during motor stall events.

Use Value: -60V V_CEO withstands load-dump transients; AEC-Q101 rating ensures 15-year field reliability in under-hood environments.

Body Control Module (BCM) Window Lift Driver

48V Mild Hybrid Auxiliary Power Switch

Use Scenario: Driving reversible window lift motors with bidirectional current flow via H-bridge configuration.

IC Role / Device Role / Timing Role: Complementary PNP element paired with DXT651Q in half-bridge topology for direction control and regenerative braking.

Use Value: Matched h_FE and V_CE(sat) characteristics between DXT751Q/DXT651Q minimize shoot-through risk and improve current balance.

Use Scenario: Isolating auxiliary 48V subsystems (e.g., active suspension sensors) from main battery during fault conditions.

IC Role / Device Role / Timing Role: High-reliability power switch activated by microcontroller GPIO, rated for 48V nominal and 60V max system voltage.

Use Value: R_θJL = 6.0°C/W enables >1W dissipation without external heatsink-critical for sealed ECU enclosures.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ZXT751MATA	Same SOT89 package, -60V V_CEO, but lower I_C = -2A and higher V_CE(sat) = -0.25V (typ.)	Limited to ≤2A loads; less suitable for 3A continuous automotive actuators	Select when cost sensitivity outweighs current headroom and thermal margin.
MJD751T4G	TO-252 package, -60V V_CEO, -3A I_C, but R_θJA = 62.5°C/W (vs. 6.0°C/W junction-to-lead)	Requires larger PCB area and external heatsink; not drop-in compatible with SOT89 layout	Choose only if legacy TO-252 footprint must be retained and thermal budget permits.

Compared with ZXT751MATA and MJD751T4G, DXT751Q uniquely combines SOT89 footprint, -3A continuous rating, ultra-low 0.08V V_CE(sat), and 6.0°C/W R_θJL-making it optimal for thermally constrained, high-reliability automotive modules where board space and thermal management are critical.

Availability

DXT751Q is available at Aetrix Electronics and suitable for engine control units, body control modules, and HVAC motor drives requiring stable component supply across automotive production lifecycles.

Supply support for DXT751Q 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, specializing in high-reliability components for automotive, industrial, and computing markets.

The DXT751Q belongs to Diodes' AEC-Q101-qualified power transistor product line, developed specifically for high-current, low-saturation switching in under-hood automotive electronics.

FAQ

What is the maximum allowable junction temperature for DXT751Q?

The DXT751Q has an operating junction temperature range of -55°C to +150°C. Its absolute maximum T_J is +150°C, validated under AEC-Q101 stress testing. Derating begins above +25°C ambient, with full 1W power dissipation permitted only up to +75°C ambient on a 40mm×40mm PCB per datasheet Note 7.

Is DXT751Q suitable for switching inductive loads like solenoids?

Yes-DXT751Q is explicitly designed for automotive inductive loads. Its -60V V_CEO rating and -6A I_CM peak pulse current safely absorb flyback energy from solenoids and motors. External flyback diode is still required, but the transistor's ruggedness supports repeated switching at 100+ Hz without degradation.

How does the SOT89 package affect thermal performance compared to SOT23?

The SOT89 package features an exposed collector pad that provides a direct thermal path to PCB copper, achieving R_θJL = 6.0°C/W-over 5× better than typical SOT23 R_θJA. This allows DXT751Q to dissipate 2W continuously on adequate copper, whereas SOT23 variants would require derating to ≤0.3W at +70°C ambient.

Can DXT751Q be used in parallel configurations for higher current?

No-DXT751Q is not characterized or recommended for paralleling. Its h_FE variation (70–300) and V_CE(sat) mismatch across units can cause current imbalance and thermal runaway. For >3A applications, use a single higher-rated device or redesign with forced-air cooling and individual current sensing.

DXT751Q-13 Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Series:: -

Package/Case:: TO-243AA

Packaging:: Tape & Reel (TR)

Product Status:: Active

Transistor Type:: PNP

Current - Collector (Ic) (Max):: 3 A

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

Vce Saturation (Max) @ Ib, Ic:: 600mV @ 300mA, 3A

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

DC Current Gain (hFE) (Min) @ Ic, Vce:: 100 @ 500mA, 2V

Power - Max:: 1 W

Frequency - Transition:: 100MHz

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

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-89-3

DXT751Q-13 FAQ

1.How can I place an order for DXT751Q-13 through Aetrix?

Please submit a Request for Quotation (RFQ) for DXT751Q-13 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 DXT751Q-13 reliable?

The price and inventory of DXT751Q-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DXT751Q-13 is usually 5 days.

3.What payment methods are accepted for DXT751Q-13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DXT751Q-13 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DXT751Q-13?

DXT751Q-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DXT751Q-13 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 DXT751Q-13?

For technical support, including DXT751Q-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DXT751Q-13 requirements.

6.How does Aetrix verify that DXT751Q-13 is sourced from the original manufacturer or authorized distributors?

All DXT751Q-13 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 DXT751Q-13 meets industry standards.

7.What is the process for return or replacement of DXT751Q-13?

All DXT751Q-13 units undergo pre-shipment inspection (PSI). If there is an issue with DXT751Q-13, 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 DXT751Q-13 part is unused and in its original packaging.

Return procedure for DXT751Q-13:

1.Submit a request within 90 days.

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

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