STL35N75LF3 - 35V N-Channel Power MOSFET | STMicroelectronics
MPN： STL35N75LF3 ✓ 啟用中STL35N75LF3 概覽
A Power MOSFET is a type of field-effect transistor used for switching and amplifying electronic signals 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, DC-DC converters, motor drivers, and battery protection circuits, where efficient switching and low power dissipation are critical.
Key features of the STL35N75LF3 include a low gate charge (Qg) for reduced switching losses, a low thermal resistance for effective heat dissipation, and a wide operating temperature range. The device is RoHS compliant and lead-free, meeting modern environmental standards. Its PowerFLAT 5x6 package offers a compact footprint with excellent thermal performance, enabling high-density PCB designs.
The STL35N75LF3 utilizes STMicroelectronics' advanced strip-layout technology, which minimizes on-resistance and parasitic capacitances. This results in improved efficiency and reduced electromagnetic interference (EMI) in high-frequency switching applications. The device also features an integrated gate-source ESD protection, enhancing its robustness in harsh operating environments.
Typical applications include DC-DC converters, load switches, motor control, and battery management systems. In DC-DC converters, the low RDS(on) and fast switching reduce power losses, improving overall converter efficiency. In motor control, the high current capability and thermal performance ensure reliable operation under continuous load conditions.
When designing with the STL35N75LF3, ensure proper gate drive voltage to fully enhance the channel and minimize conduction losses. Adequate PCB copper area and thermal vias are recommended to dissipate heat effectively, especially in high-current applications. The device's low gate charge allows for direct driving from microcontrollers or gate driver ICs, simplifying the design.
直接替換替代品，適用於 STL35N75LF3 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： STL35N75LF3 （相同外形與佔位） — 差異在於 Mounting Type.
STL35N75LF3AG
✅ 直接替換 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STL35N75LF3
✅ 直接替換聯絡詢價
查看資料表 →IPD35N03S4L-30
⚡ 相同封裝 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
NVMFS5C450N
⚡ 相同封裝 ⚠️ 規格未經驗證📋 參考替代品（不在目錄中）
STL35N75LF3 最大額定值與電氣特性
| Polarity | N-Channel |
| Drain-Source Voltage (VDS) | 35 V |
| Continuous Drain Current (ID) | 35 A |
| 工作溫度範圍 | -55°C to +150°C |
| 封裝 | PowerFLAT 5x6 |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
| Lead-Free | Yes |
| ESD Protection | Integrated |
| Technology | Strip-layout |
STL35N75LF3 腳位配置
| 腳位 1 | G — Gate |
| 腳位 2 | S — Source |
| 腳位 3 | D — Drain |
| 腳位 4 | D — Drain |
| 腳位 5 | D — Drain |
| 腳位 6 | D — Drain |
| 腳位 7 | S — Source |
| 腳位 8 | S — Source |
安全工作區
典型應用
STL35N75LF3 適用於 6 應用s: DC-DC Converters, Motor Control, Battery Management Systems, Load Switches, Power Supply Units, Automotive Electronics.
DC-DC Converters
The STL35N75LF3 is ideal for DC-DC converter output stages due to its low on-resistance and fast switching. In a synchronous buck converter, it serves as the high-side or low-side switch, minimizing conduction and switching losses. Its 35V VDS rating supports 24V input systems, and the 35A current capability handles high output currents. The PowerFLAT 5x6 package's low thermal resistance allows efficient heat dissipation, enabling high power density designs. Compared to older MOSFETs, the strip-layout technology reduces parasitic capacitance, improving switching performance at high frequencies.
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Motor Control
In motor control applications, the STL35N75LF3 handles the high currents required for driving DC motors and brushless DC motors. Its 35A continuous drain current and low RDS(on) ensure efficient power delivery, reducing heat generation. The fast switching capability allows for PWM control at high frequencies, improving motor speed regulation. The device's robust thermal performance ensures reliable operation under continuous load. The integrated ESD protection enhances durability in industrial environments where electrostatic discharge is a concern.
推薦
Battery Management Systems
The STL35N75LF3 is used in battery management systems (BMS) for load switching and protection. Its low on-resistance minimizes power loss during charging and discharging, improving overall system efficiency. The 35V VDS rating is suitable for multi-cell battery packs, and the high current capability supports high-capacity batteries. The device's fast switching enables rapid disconnection in fault conditions, protecting the battery from overcurrent or short circuits. The PowerFLAT 5x6 package's compact size is ideal for space-constrained BMS designs.
推薦
Load Switches
The STL35N75LF3 serves as an efficient load switch in power distribution systems. Its low RDS(on) reduces voltage drop across the switch, ensuring stable power delivery to the load. The device's fast switching allows for quick power-on/off sequences, which is essential for power sequencing in complex systems. The 35A current rating supports high-power loads, and the integrated ESD protection ensures reliability. The compact PowerFLAT 5x6 package enables high-density PCB layouts, making it suitable for portable and industrial devices.
推薦
Power Supply Units
In power supply units (PSUs), the STL35N75LF3 is used in the primary switching stage of AC-DC converters. Its high voltage rating and current capability make it suitable for 24V and 12V output rails. The low on-resistance reduces conduction losses, improving overall efficiency. The fast switching minimizes switching losses, enabling higher switching frequencies and smaller magnetic components. The device's thermal performance ensures reliable operation in enclosed PSU enclosures. The PowerFLAT 5x6 package's low profile is advantageous for slim PSU designs.
推薦
Automotive Electronics
The STL35N75LF3 is used in automotive electronics for applications such as LED lighting, power windows, and engine control units. Its 35V VDS rating is compatible with automotive electrical systems (12V/24V). The high current capability supports loads like motors and solenoids. The device's wide operating temperature range (-55°C to +150°C) ensures reliable operation in harsh automotive environments. For automotive-grade requirements, the STL35N75LF3AG variant is AEC-Q101 qualified, meeting stringent reliability standards.
推薦
推薦產品摘要
工程參考資料，適用於 STL35N75LF3 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | STL35N75LF3AG | IPD35N03S4L-30 | NVMFS5C450N |
|---|---|---|---|---|
| Package | PowerFLAT 5x6 | PowerFLAT 5x6 | PG-TDSON-8 | SO-8FL |
| Brand | STMicroelectronics | STMicroelectronics | Infineon | onsemi |
| VDS (V) | 35 | 35 | 30 | 40 |
| ID (A) | 35 | 35 | 35 | 30 |
| Automotive Grade | No | Yes (AEC-Q101) | No | No |
| ESD Protection | Yes | Yes | No | No |
主要差異化特點
- Integrated ESD protection (對比IPD35N03S4L-30)
- Automotive-grade variant available (對比NVMFS5C450N)
- Higher VDS rating (對比IPD35N03S4L-30)
設計說明
The STL35N75LF3 in PowerFLAT 5x6 package requires adequate PCB copper area for heat dissipation. Use multiple thermal vias under the exposed pad to conduct heat to the ground plane. For continuous operation at high currents, ensure the junction temperature stays below 150°C. Calculate power dissipation using P = I^2 * RDS(on) and verify thermal resistance.
Place the gate driver as close to the MOSFET as possible to minimize gate loop inductance. Use a gate resistor (typically 10Ω) to control switching speed and reduce EMI. Keep the source connection short and direct to the driver ground to avoid parasitic inductance. For high-current paths, use wide copper traces and multiple vias to reduce resistance.
Do not exceed the maximum VDS of 35V, as this can cause avalanche breakdown. Ensure the gate-source voltage is within the absolute maximum rating to prevent gate oxide damage. When paralleling multiple MOSFETs, use separate gate resistors to avoid oscillation. Always consider the effect of temperature on RDS(on), which increases with temperature, leading to higher conduction losses.
合規資訊
RoHS compliant and lead-free per STMicroelectronics. Not AEC-Q100 qualified; use STL35N75LF3AG for automotive.