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

Diodes Incorporated DZT651-13

Name: DZT651-13
Brand: Diodes Incorporated
SKU: DZT651-13
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: DZT651-13

Manufacturer:: Diodes Incorporated

Category:: Single Bipolar Transistors

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

Datasheet:: DZT651-13.pdf

Description:: TRANS NPN 60V 3A SOT-223-3

Quantity:: RFQ Add To RFQ list

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Inventory:8,798

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Product details

Overview

DZT651-13 from Diodes Incorporated is a low V_CE(SAT) NPN bipolar junction transistor in SOT-223 package, rated for 60 V V_CEO, 3 A continuous collector current, and 0.23 V typical V_CE(SAT) at I_C = 3 A / I_B = 300 mA. It serves as a medium-power switching device in DC-DC converters, motor drivers, and load-switching circuits.

For engineers reviewing the DZT651-13 datasheet, DZT651-13 pinout, DZT651-13 application, or DZT651-13 equivalent, key selection criteria include verified V_CE(SAT) performance at high I_C, thermal resistance (R_θJA = 125 °C/W on FR-4), h_FE stability across temperature (−55 to +150 °C), and RoHS-compliant lead-free plating.

Technical Context

The DZT651-13 uses epitaxial planar die construction to achieve low saturation voltage and stable gain over wide temperature range. Its complementary PNP counterpart is DZT751, enabling push-pull configurations.

Designed for surface-mount automated assembly, it supports high-current switching with validated 6 A peak pulse capability and 140–200 MHz f_T at V_CE = 5 V, I_C = 100 mA - confirming suitability for medium-frequency switching applications up to ~10 MHz.

Key Specifications

Parameter	Value and Actual Design Meaning
V_CEO	60 V - Maximum safe collector-emitter voltage under open-base conditions; defines blocking capability in switch-off state.
I_C (continuous)	3 A - Continuous DC collector current rating at T_A = 25 °C; determines steady-state power handling in linear or switching modes.
V_CE(SAT)	0.23 V (typ) @ I_C = 3 A, I_B = 300 mA - Confirmed low conduction loss enabling <1 W dissipation at full load, critical for thermal management.
h_FE	120–200 @ I_C = 50–1000 mA - Stable DC current gain across operating range supports predictable base drive design.
f_T	140–200 MHz - Verified small-signal bandwidth ensures reliable operation in PWM control feedback paths and medium-speed switching.
R_θJA	125 °C/W - Thermal resistance on standard FR-4 PCB per AP02001 layout; enables derating calculation for ambient temperatures up to 100 °C.
T_J Range	−55 to +150 °C - Extended junction temperature range supports industrial and automotive under-hood environments.

Pinout & Package

Package: SOT-223 - Surface-mount plastic package with exposed thermal pad (pin 4), rated for 0.115 g weight and UL 94V-0 flammability. Moisture sensitivity level 1 per J-STD-020C.

Pin/Terminal	Circuit Role	Design Meaning
1 (Emitter)	E	Current return path; electrically connected to tab/thermal pad for enhanced heat transfer to PCB copper.
2 (Collector)	C	Main current-carrying terminal; tied to internal die collector region and external heatsink via pin 4.
3 (Base)	B	Control input; requires 300 mA drive for full saturation at 3 A collector current.
4 (Collector / Tab)	C (common with pin 2)	Exposed metal tab serving as secondary collector connection and primary thermal interface to PCB.

Key Features

Feature	Design Value
Low V_CE(SAT)	0.23 V typ at 3 A - Reduces conduction losses by >40% vs. standard NPN transistors, improving efficiency in 12 V/24 V power stages.
Epitaxial planar die	Enables tight parameter distribution and stable h_FE across −55 to +150 °C - simplifies thermal compensation in industrial controls.
SOT-223 thermal pad	Pin 4 provides direct thermal path to PCB copper - achieves 125 °C/W R_θJA without external heatsink in space-constrained designs.
Lead-free & RoHS	Matte tin annealed over copper leadframe - ensures solderability per MIL-STD-202 and eliminates Pb-related reliability concerns in long-life systems.
Complementary pairing	DZT751 available - enables matched NPN/PNP pairs for H-bridge, totem-pole, and differential amplifier topologies.

Applications

DC-DC Converter Switch

Brushed DC Motor Driver

Use Scenario: High-efficiency buck converter output stage operating at 200 kHz with 12 V input and 5 V/2 A output.

IC Role / Device Role / Timing Role: Main power switch controlling energy transfer to output inductor; driven by PWM controller with 300 mA base current.

Use Value: 0.23 V V_CE(SAT) limits conduction loss to ≤0.69 W at full load, reducing thermal stress and enabling compact PCB layout.

Use Scenario: Bidirectional 24 V brushed motor control in industrial actuator with 3 A stall current.

IC Role / Device Role / Timing Role: Low-side switch in half-H-bridge configuration; toggled at ≤10 kHz with fast turn-on/turn-off (t_on/t_off ≤ 35/230 ns).

Use Value: Validated 6 A peak pulse rating handles motor inrush; 125 °C/W R_θJA allows operation at 85 °C ambient without derating.

Industrial Load Switch

LED Driver Current Regulator

Use Scenario: Programmable 24 V/3 A load switch in PLC I/O module with overtemperature protection.

IC Role / Device Role / Timing Role: Solid-state replacement for mechanical relay; controlled by microcontroller GPIO with base resistor network.

Use Value: 60 V V_CEO withstands inductive kickback; h_FE ≥120 at 1 A ensures robust saturation with minimal MCU drive overhead.

Use Scenario: Constant-current driver for high-brightness LED string (350 mA–2 A) in outdoor signage.

IC Role / Device Role / Timing Role: Linear current regulator in emitter-follower configuration; dissipates variable power based on LED forward voltage variation.

Use Value: Low V_CE(SAT) minimizes dropout voltage, extending dimming range and reducing thermal load on heatsink.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
ZXTN6510F	Higher V_CEO (100 V), lower I_C (2.5 A), SOT-89 package (no thermal tab)	Limited thermal performance in sustained 3 A operation due to higher R_θJA (~180 °C/W)	Select when higher voltage blocking is required and peak current ≤2.5 A.
MJD651T4G	Same V_CEO (60 V), higher I_C (5 A), TO-220 package (requires heatsink)	Through-hole mounting and larger footprint; superior thermal dissipation but incompatible with SMT-only lines	Select when board-level thermal budget exceeds SOT-223 capability and manual assembly is acceptable.

Compared with ZXTN6510F and MJD651T4G, the DZT651-13 uniquely balances 3 A continuous current, ultra-low V_CE(SAT), SMT compatibility, and integrated thermal pad - making it optimal for space-constrained, high-efficiency medium-power switching where automated assembly is mandatory.

Availability

DZT651-13 is available at Aetrix Electronics and suitable for DC-DC converters, brushed DC motor drivers, and industrial load switches requiring stable component supply, RoHS compliance, and SMT manufacturability.

Supply support for DZT651-13 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.

The DZT651-13 belongs to Diodes' general-purpose power transistor product line, engineered specifically for high-reliability, medium-power switching applications in industrial automation, power supplies, and motor control where low saturation voltage and thermal robustness are critical.

FAQ

What is the maximum allowable base current for continuous operation?

The datasheet specifies I_B = 300 mA for full saturation at I_C = 3 A. While peak I_B can reach 600 mA (per I_CM = 6 A), continuous base current must be limited to ≤300 mA to avoid bond wire overheating and ensure 100% duty-cycle reliability per JEDEC guidelines for SOT-223 packages.

Is the thermal pad (pin 4) electrically isolated or connected internally?

Pin 4 is internally connected to the collector (same potential as pin 2), as confirmed by the schematic and top-view pin diagram. It must be soldered to a PCB copper pour tied to the collector net to realize the specified R_θJA = 125 °C/W; floating or grounding the pad degrades thermal performance and may cause failure.

How does V_CE(SAT) vary across temperature?

Figure 4 shows V_CE(SAT) increases by ≤0.05 V from −55 °C to +150 °C at I_C = 3 A. At 150 °C, V_CE(SAT) remains ≤0.28 V - within 22% of room-temperature value - ensuring predictable conduction loss in high-ambient environments.

Can DZT651-13 replace DZT651 in existing designs?

Yes - DZT651-13 is the tape-and-reel packaging variant of DZT651 (same die, same electrical specs, same SOT-223 footprint). The "-13" suffix denotes 2500-unit reel packaging per Diodes' ordering convention; no electrical or mechanical differences exist between the two part numbers.

DZT651-13 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:: NPN

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:: 200MHz

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-223-3

DZT651-13 FAQ

1.How can I place an order for DZT651-13 through Aetrix?

Please submit a Request for Quotation (RFQ) for DZT651-13 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 DZT651-13 reliable?

The price and inventory of DZT651-13 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DZT651-13 is usually 5 days.

3.What payment methods are accepted for DZT651-13?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DZT651-13 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for DZT651-13?

DZT651-13 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your DZT651-13 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 DZT651-13?

For technical support, including DZT651-13 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DZT651-13 requirements.

6.How does Aetrix verify that DZT651-13 is sourced from the original manufacturer or authorized distributors?

All DZT651-13 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 DZT651-13 meets industry standards.

7.What is the process for return or replacement of DZT651-13?

All DZT651-13 units undergo pre-shipment inspection (PSI). If there is an issue with DZT651-13, 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 DZT651-13 part is unused and in its original packaging.

Return procedure for DZT651-13:

1.Submit a request within 90 days.

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

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