STP85NF55 - 85A, 55V N-Channel Power MOSFET | STMicroelectronics
部品番号: STP85NF55 ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $1.25 | $1.25 |
| 10 | $1.12 | $11.20 |
| 100 | $0.98 | $98.00 |
| 500 | $0.87 | $435.00 |
| 1,000 | $0.79 | $790.00 |
STP85NF55 概要
A Power MOSFET is a type of field-effect transistor optimized for switching and amplification in power electronics. It operates by controlling the flow of current between the drain and source terminals through an electric field generated by the gate voltage. Power MOSFETs are essential components in power management ICs, motor drivers, and switching regulators, where they handle high voltages and currents with low on-resistance and fast switching speeds.
Key features of the STP85NF55 include a low on-resistance (RDS(on)) of at VGS=10V, which minimizes conduction losses, and a fast switching speed that reduces switching losses in high-frequency applications. The device also offers a wide operating temperature range of -55°C to +175°C, ensuring reliability in harsh environments. The TO-220 package allows for easy mounting on heatsinks, enabling efficient thermal management.
The STP85NF55 utilizes STMicroelectronics' advanced PowerMESH™ technology, which provides a robust and reliable structure for high-current handling. The device features a low gate charge (Qg) of , which reduces the drive requirements and improves efficiency in high-frequency switching circuits. The built-in diode offers fast reverse recovery, making it suitable for applications requiring freewheeling diodes.
Typical applications include switch-mode power supplies (SMPS), DC-DC converters, motor control circuits, and automotive systems. The high current rating and low on-resistance make it ideal for battery management systems and power distribution. In motor control, the fast switching speed ensures precise control of motor speed and torque.
When designing with this device, ensure adequate gate drive voltage (typically 10V) to achieve the lowest on-resistance. The TO-220 package requires proper heatsinking to manage power dissipation, especially at high currents. Consider the thermal resistance (RthJA) of to calculate the junction temperature under load.
ドロップイン代替品: STP85NF55 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
クイック比較ツール — 並列比較する代替部品を選択:
STP80NF55
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
STP85NF55-1
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
IRF3205
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
FDP85N06
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
STP85NF55 最大定格＆電気的特性
| Drain-to-Source Voltage (VDS) | 55 V |
| Continuous Drain Current (ID) at 25°C | 85 A |
| Gate-to-Source Voltage (VGS) | ±20 V |
| 動作温度範囲 | -55°C to +175°C |
| パッケージ | TO-220 |
| 実装タイプ | Through Hole |
| RoHS ステータス | Compliant |
STP85NF55 ピン構成
| ピン 1 | Gate — Gate terminal for controlling the MOSFET |
| ピン 2 | Drain — Drain terminal, connected to the load |
| ピン 3 | Source — Source terminal, connected to ground |
安全動作領域
主な用途
STP85NF55 の用途: 6 件s: Switch-Mode Power Supplies (SMPS), DC-DC Converters, Motor Control, Battery Management Systems (BMS), Automotive Systems, Power Distribution.
Switch-Mode Power Supplies (SMPS)
The STP85NF55 is used as a switching element in SMPS due to its high current rating and low on-resistance. In a typical SMPS, the MOSFET switches at high frequency to regulate output voltage. The low RDS(on) minimizes conduction losses, improving efficiency. The fast switching speed reduces switching losses, making it suitable for high-frequency operation. The TO-220 package allows for easy heatsinking, ensuring reliable operation under high power dissipation. Compared to other MOSFETs, the STP85NF55 offers a good balance of current handling and thermal performance, making it ideal for power supplies up to several hundred watts.
おすすめ
DC-DC Converters
In DC-DC converters, the STP85NF55 acts as a high-side or low-side switch. Its high current capability (85A) supports converters with high output current. The low gate charge reduces drive requirements, simplifying the gate driver circuit. The fast switching speed enables high-frequency operation, reducing the size of inductors and capacitors. The wide operating temperature range ensures reliability in industrial environments. The TO-220 package facilitates thermal management, allowing continuous operation at high power levels. The STP85NF55 is particularly suited for buck converters in telecom and server applications where efficiency and reliability are critical.
おすすめ
Motor Control
The STP85NF55 is used in motor control circuits for driving DC motors, brushless DC motors, and stepper motors. Its high current rating allows it to handle the inrush current of motors. The fast switching speed enables PWM control for precise speed and torque regulation. The low on-resistance minimizes power loss in the motor drive stage. The TO-220 package allows for heatsinking, which is essential for continuous motor operation. In H-bridge configurations, the STP85NF55 can be used as a high-side or low-side switch. Its robustness and thermal performance make it suitable for industrial motor drives and automotive applications.
おすすめ
Battery Management Systems (BMS)
In battery management systems, the STP85NF55 is used for battery protection and charge/discharge control. Its high current rating (85A) supports high-capacity battery packs. The low on-resistance reduces power loss during charging and discharging, improving efficiency. The wide operating temperature range ensures reliable operation in various environments. The TO-220 package allows for heatsinking, which is important for high-current applications. The fast switching speed enables rapid disconnection in fault conditions, protecting the battery from overcurrent and short circuits. The STP85NF55 is suitable for electric vehicles, power tools, and energy storage systems.
おすすめ
Automotive Systems
The STP85NF55 is used in automotive systems such as electronic control units (ECUs), power steering, and lighting. Its high current rating and wide temperature range (-55°C to +175°C) make it suitable for under-hood applications. The low on-resistance minimizes power loss, improving fuel efficiency. The fast switching speed enables efficient PWM control for motors and actuators. The TO-220 package allows for heatsinking, ensuring reliable operation in high-temperature environments. The STP85NF55 is also used in automotive DC-DC converters for powering infotainment systems and sensors. Its robustness and reliability make it a preferred choice for automotive power management.
おすすめ
Power Distribution
The STP85NF55 is used in power distribution systems for load switching and protection. Its high current rating (85A) allows it to handle large loads. The low on-resistance minimizes voltage drop across the switch, ensuring efficient power delivery. The fast switching speed enables rapid response to fault conditions. The TO-220 package allows for heatsinking, which is essential for high-current applications. The wide operating temperature range ensures reliable operation in industrial environments. The STP85NF55 is suitable for use in power distribution units (PDUs), server power supplies, and industrial control systems.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: STP85NF55 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | STP80NF55 | STP85NF55-1 | IRF3205 | FDP85N06 |
|---|---|---|---|---|---|
| Package | TO-220 | TO-220 | TO-220 | TO-220 | TO-220 |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | Infineon | onsemi |
| Drain-to-Source Voltage (VDS) | 55 V | 55 V | 55 V | 55 V | 60 V |
| Continuous Drain Current (ID) at 25°C | 85 A | 80 A | 85 A | 110 A | 85 A |
| Gate-to-Source Voltage (VGS) | ±20 V | ±20 V | ±20 V | ±20 V | ±20 V |
| Operating Temperature Range | -55°C to +175°C | -55°C to +175°C | -55°C to +175°C | -55°C to +175°C | -55°C to +175°C |
| Automotive Grade | No | No | Yes (AEC-Q101) | No | No |
主な差別化要因
- Higher continuous drain current (85A) compared to STP80NF55 （vs STP80NF55)
- Automotive grade variant available (STP85NF55-1) （vs STP85NF55)
- Lower on-resistance compared to IRF3205 （vs IRF3205)
設計ノート
The STP85NF55 in TO-220 package requires adequate heatsinking for high-current operation. At 85A and VDS=10V, power dissipation is significant. Use a heatsink with thermal resistance low enough to keep junction temperature below 175°C. Calculate the required heatsink using the thermal resistance from junction to ambient (RthJA) and the power dissipation.
For through-hole TO-220 package, ensure proper soldering and mechanical support. Use a heatsink with thermal compound for efficient heat transfer. Keep gate drive traces short to minimize inductance and ringing. Place a gate resistor (e.g., 10Ω) to dampen oscillations.
Do not exceed the maximum VDS of 55V or VGS of ±20V. Ensure the gate drive voltage is at least 10V to achieve the lowest on-resistance. Avoid operating in the linear region for extended periods to prevent thermal runaway. Use a freewheeling diode across inductive loads to protect the MOSFET from voltage spikes.
コンプライアンス情報
RoHS compliant per STMicroelectronics product page. AEC-Q101 qualification available on STP85NF55-1 variant.
