Description
Product Overview
The BOJACK IRLB8721 MOSFET is a high‑performance N‑Channel power transistor designed for demanding electronic applications. Built on a robust TO‑220 package, it combines a 30 V drain‑source voltage rating with a continuous drain current of 62 A, delivering up to 65 W of power dissipation. This combination of voltage and current capability makes the device suitable for a wide range of industrial and hobbyist projects where efficiency and reliability are essential.
Manufactured by BOJACK, a reputable supplier of semiconductor components, the IRLB8721 series adheres to strict quality standards. The transistor’s low on‑resistance reduces conduction losses, while its fast switching speed enables precise control in high‑frequency circuits. The leaded package simplifies soldering onto printed circuit boards, and the component’s thermal resistance allows effective heat‑dissipation when paired with appropriate heat‑sinking solutions.
Each pack contains ten identical units, providing a cost‑effective solution for batch production or prototyping. The part number BJ‑MOS‑8721 identifies the specific variant, and the device is listed under ASIN B083WMH7CD for easy reference on major e‑commerce platforms. With a weight of just 2.39 ounces and compact dimensions of 2.8 × 2 × 0.6 inches, the MOSFET integrates smoothly into dense board layouts without sacrificing performance.
Key electrical specifications include a maximum drain‑source voltage (VDS) of 30 V, a peak drain current (ID) of 62 A, and a total power rating of 65 W. The transistor also features a gate threshold voltage ranging from 1.0 V to 2.5 V, ensuring reliable turn‑on at low drive levels. These parameters are complemented by a typical on‑resistance (RDS(on)) of 4.5 mΩ at a gate voltage of 10 V, providing excellent efficiency for power conversion tasks.
The IRLB8721’s design emphasizes durability and long‑term stability. It is rated for operation across a temperature range of –55 °C to 150 °C, allowing use in harsh environments. The component’s lead‑frame construction offers mechanical strength, while the silicon die is protected by a passivation layer that guards against moisture and contaminants. Together, these features deliver a reliable switching element for power supplies, motor drivers, LED arrays, and other high‑current applications.
Reliability testing for the IRLB8721 includes high‑temperature operating life (HTOL) and power cycling assessments, confirming that the MOSFET can endure prolonged stress without performance degradation. The device complies with RoHS and REACH guidelines, ensuring it meets environmental standards for lead‑free manufacturing and safe disposal.
The MOSFET’s electrical characteristics are documented in a comprehensive datasheet that provides detailed transfer curves, capacitance values, and safe operating area (SOA) graphs. Designers can use this data to model the component accurately in simulation tools such as SPICE, enabling precise prediction of circuit behavior before hardware prototyping.
The ten‑unit packaging is designed for both protection and convenience. Each MOSFET is individually sealed in an anti‑static bag to prevent electrostatic discharge during handling, and the bulk box includes a clear label with part number, voltage, and current ratings for quick identification. This packaging approach reduces the risk of damage during transport and simplifies inventory management for large‑scale assemblers.
Environmental compliance is a key consideration for modern manufacturers. The IRLB8721 is RoHS‑compliant, free from hazardous substances such as lead, mercury, and cadmium, and meets the IEC 60950 safety standard for electronic equipment. These certifications facilitate easier market entry across regions with strict environmental regulations.
Usage
In motor control systems, the IRLB8721 can handle the high surge currents required to start and brake DC motors. Its low on‑resistance minimizes voltage drop, reducing heat generation and improving overall efficiency. Engineers often pair the MOSFET with gate driver ICs to achieve fast rise and fall times, which translates into smoother motor operation and lower acoustic noise.
For LED lighting installations, the transistor’s ability to switch large currents at modest voltages makes it ideal for driving high‑brightness LED arrays. The device’s fast switching reduces flicker, while its thermal characteristics allow multiple LEDs to be powered from a single MOSFET without overheating. Designers can implement current‑limiting resistors or constant‑current drivers alongside the IRLB8721 to achieve precise illumination control.
Switching power supplies, such as buck or boost converters, benefit from the IRLB8721’s high current handling and low conduction losses. The MOSFET’s fast transition times enable higher switching frequencies, which in turn reduces the size of inductors and capacitors required in the circuit. This compactness is valuable in portable electronics, automotive applications, and aerospace equipment where space and weight are at a premium.
The component is also suitable for hobbyist projects involving Arduino or Raspberry Pi platforms, where users need a reliable switch for controlling relays, solenoids, or other actuators. Its TO‑220 form factor can be easily mounted on heat‑sink brackets, and the leaded pins simplify breadboard prototyping. By providing a robust switching element, the IRLB8721 helps hobbyists move from experimental setups to more permanent, production‑grade designs.
In renewable energy systems, such as solar inverter modules, the IRLB8721 can serve as the primary switch for converting photovoltaic DC power into AC output. Its high current rating supports the parallel connection of multiple solar strings, while its fast switching reduces harmonic distortion, contributing to higher overall system efficiency.
When integrated into battery management circuits, the MOSFET provides efficient charge‑discharge control for lithium‑ion packs. Its low on‑resistance minimizes energy loss during high‑current charging, and the device’s robust thermal performance helps maintain safe operating temperatures, extending battery lifespan.
In robotics, precise motor control is essential for accurate positioning and speed regulation. The IRLB8721’s fast switching capability enables pulse‑width modulation (PWM) control loops with high resolution, allowing robotic arms and mobile platforms to achieve smooth acceleration and deceleration profiles while maintaining low thermal footprints.
For industrial automation, the MOSFET can be employed in programmable logic controller (PLC) output modules to switch high‑current loads such as solenoid valves and contactors. Its robust construction tolerates the repetitive on/off cycles typical in automation sequences, and its low gate charge reduces the demand on the PLC’s driver circuitry.
In high‑frequency RF switching applications, the IRLB8721’s low capacitance values contribute to reduced signal distortion, making it a viable option for RF amplifiers and mixers where clean signal integrity is paramount.
Why Choose Us
Choosing BOJACK as your MOSFET supplier ensures access to components that meet rigorous industry standards. Each IRLB8721 unit undergoes comprehensive testing for electrical performance, thermal behavior, and mechanical integrity, guaranteeing that the part functions as specified in every batch.
Our packaging of ten pieces per box streamlines inventory management for manufacturers and reduces per‑unit cost for small‑scale developers. The consistent part numbering and clear labeling eliminate confusion during assembly, while the included datasheet provides detailed pin‑out diagrams, characteristic curves, and recommended operating conditions.
We stand behind the quality of our products with responsive technical support and a straightforward return policy. If a customer encounters any issues related to performance or compatibility, our engineering team is ready to assist with troubleshooting, design recommendations, and replacement options.
In addition to the core product, BOJACK offers a range of complementary components such as gate driver ICs, heat‑sink accessories, and protective diodes, enabling customers to source complete solutions from a single trusted source. This ecosystem approach simplifies design cycles and shortens time‑to‑market for new electronic products.
Our logistics network ensures rapid delivery of the IRLB8721 packs to customers worldwide, with options for expedited shipping and real‑time tracking. This reliability in supply chain management helps manufacturers maintain production schedules and avoid costly downtime.
We continuously update our product line based on customer feedback and emerging market trends, ensuring that the MOSFET offerings remain competitive in terms of performance, cost, and availability. This commitment to innovation reflects our dedication to supporting the evolving needs of the electronics industry.
Our engineering team provides design‑in assistance, offering reference schematics, layout guidelines, and simulation models to accelerate product development. By collaborating closely with customers, we help optimize the MOSFET’s performance within specific applications, ensuring that the final design meets both efficiency targets and cost constraints.
Key Features
- High current capability of 62 A allows the MOSFET to drive demanding loads such as motors and LED arrays without overheating.
- 30 V drain‑source rating provides a safe margin for most low‑voltage power conversion applications, ensuring reliable operation under transient conditions.
- Low on‑resistance of 4.5 mΩ reduces power loss, improving overall efficiency and extending the lifespan of the device in continuous‑run scenarios.
- Robust TO‑220 package with leaded pins facilitates easy soldering and heat‑sink attachment, making it suitable for both prototype and production environments.
- BOJACK’s dedicated after‑sales support offers technical assistance, warranty coverage, and fast replacement, giving customers confidence in long‑term reliability.
FAQ
What is the maximum switching frequency for the IRLB8721 MOSFET?
The IRLB8721 can operate efficiently at switching frequencies up to several hundred kilohertz. The exact maximum frequency depends on the gate‑drive strength, load impedance, and how well the device is thermally managed. In typical DC‑DC converter designs, engineers often select a switching range between 200 kHz and 500 kHz to balance efficiency and component size, while still keeping the MOSFET within its safe operating area. Beyond this range, increased switching losses may require larger gate resistors or additional cooling to maintain reliability.
Do I need a heat sink when using the IRLB8721 in a 30 V, 50 A application?
Yes, at high current levels the MOSFET will generate noticeable heat. Attaching a suitable heat sink that provides a thermal resistance of 1 °C/W or lower, combined with proper airflow, will keep the junction temperature within safe limits. If the device is used in a confined enclosure, consider adding a fan or using a heat‑pipe‑based cooling solution to improve heat removal. Monitoring the temperature with a thermistor or infrared camera during initial testing helps verify that the thermal design meets the MOSFET’s specifications.
Can the IRLB8721 be used in automotive environments?
The transistor’s operating temperature range of –55 °C to 150 °C and its robust construction make it suitable for many automotive applications, provided that the circuit includes appropriate protection against voltage spikes and electromagnetic interference. In automotive environments, it is common to add a TVS diode across the drain and source to clamp transient over‑voltage events, and to place a gate‑resistor to limit dV/dt during rapid switching. Proper PCB layout with short trace lengths and adequate grounding further enhances reliability under harsh conditions.
Is the IRLB8721 compatible with common gate driver ICs?
Yes, the IRLB8721’s gate threshold voltage of 1.0 V to 2.5 V allows it to be driven by standard low‑side driver chips such as the IR2110, MIC4422, or similar devices, ensuring fast and reliable switching. When using a driver, select a gate resistor value that balances switching speed with ringing suppression, and ensure the driver’s supply voltage is compatible with the MOSFET’s maximum gate voltage of 20 V. Adding a small gate‑source capacitor can further improve turn‑on performance in high‑frequency applications.
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