STK035N4S8AG - 40V N-Channel Power MOSFET | STMicroelectronics
N.º da peça: STK035N4S8AG ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $1.25 | $1,25 |
| 10 | $1.12 | $11,20 |
| 100 | $0.98 | $98,00 |
| 500 | $0.85 | $425,00 |
| 1.000 | $0.72 | $720,00 |
STK035N4S8AG Visão geral
A Power MOSFET is a type of field-effect transistor optimized for switching and amplification of power. It operates by controlling the flow of current between the drain and source terminals through an electric field applied at the gate. Power MOSFETs are essential components in power electronics, serving as switches in power supplies, motor drives, and battery management systems. They are part of the broader category of discrete semiconductors, which also includes diodes, thyristors, and IGBTs. The STK035N4S8AG leverages ST's advanced strip layout technology to achieve low on-resistance and fast switching, reducing power losses and improving system efficiency.
Key features of the STK035N4S8AG include a very low on-resistance (RDS(on)) of 4.5 mOhm at 10V gate drive, which minimizes conduction losses. The device also offers a wide gate drive range from 4.5V to 10V, allowing compatibility with both 5V and 12V logic levels. Its fast switching speed, with a typical rise time of 15ns and fall time of 20ns, enables high-frequency operation up to several hundred kHz. The MOSFET is AEC-Q101 qualified, ensuring reliability for automotive applications, and is RoHS compliant.
Technically, the STK035N4S8AG uses a planar stripe geometry that optimizes the trade-off between on-resistance and gate charge. The device has a total gate charge (Qg) of 30nC, which reduces the drive power required and improves switching efficiency. The PowerFLAT 5x6 package features an exposed pad that enhances thermal dissipation, with a junction-to-case thermal resistance of 1.2 C/W. This allows the MOSFET to handle high power dissipation without exceeding the maximum junction temperature of 175C.
Typical applications include automotive body control modules, DC-DC converters, motor control, and load switching. In automotive systems, the AEC-Q101 qualification ensures reliable operation under harsh conditions, such as temperature extremes and vibration. In industrial applications, the low on-resistance and fast switching reduce energy losses, improving overall system efficiency.
When designing with the STK035N4S8AG, ensure proper gate drive voltage to fully enhance the channel and minimize on-resistance. The gate-source voltage should not exceed the absolute maximum rating of 20V. Additionally, adequate PCB copper area and thermal vias are recommended to dissipate heat effectively, especially in high-current applications.
Alternativas drop-in para STK035N4S8AG — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
STL140N4LLF5
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
STL120N4LLF5
✅ Drop-In ⚠️ Especificações não verificadas📋 Alternativa de referência (fora do catálogo)
STK035N4S8AG Classificações máximas e características elétricas
| Polarity | N-Channel |
| Drain-Source Voltage (VDS) | 40 V |
| Continuous Drain Current (ID) | 35 A |
| On-Resistance (RDS(on)) | 4.5 mOhm @ VGS=10V |
| Gate-Source Voltage (VGS) | ±20 V |
| Total Gate Charge (Qg) | 30 nC |
| Tempo de subida | 15 ns |
| Tempo de descida | 20 ns |
| Power Dissipation (PD) | 100 W |
| Faixa de temperatura de operação | -55C to +175C |
| Encapsulamento | PowerFLAT 5x6 |
| Tipo de montagem | Surface Mount |
| AEC-Q101 Qualified | Yes |
| RoHS Compliant | Yes |
| Thermal Resistance (Junction-to-Case) | 1.2 C/W |
Configuração de pinos do STK035N4S8AG
| Pino 1 | G — Gate |
| Pino 2 | S — Source |
| Pino 3 | S — Source |
| Pino 4 | D — Drain |
| Pino 5 | D — Drain |
| Pino 6 | D — Drain |
| Pino 7 | D — Drain |
| Pino 8 | D — Drain |
Área de Operação Segura
Aplicações típicas
STK035N4S8AG é adequado para 6 aplicaçãos: Automotive Body Control Module, DC-DC Converter, Motor Control, Load Switching, Battery Management System, Power Supply Unit.
Automotive Body Control Module
The STK035N4S8AG is ideal for automotive body control modules due to its AEC-Q101 qualification and low on-resistance. It can switch loads such as lights, motors, and solenoids efficiently. In a typical body control module, the MOSFET is used as a high-side or low-side switch, controlled by a microcontroller. The low RDS(on) minimizes power dissipation, reducing heat generation in the module. The fast switching speed allows for PWM control of loads, enabling dimming or speed control. The PowerFLAT 5x6 package's exposed pad aids in thermal management, ensuring reliable operation in the engine compartment's high-temperature environment.
Recomendado
DC-DC Converter
In DC-DC converters, the STK035N4S8AG serves as a synchronous rectifier or main switch. Its low on-resistance (4.5 mOhm) reduces conduction losses, while the low gate charge (30nC) enables high-frequency operation, shrinking the size of magnetic components. The MOSFET's fast switching speed minimizes switching losses, improving overall converter efficiency. In a typical buck converter, the STK035N4S8AG is used in the high-side position, with a complementary low-side MOSFET. The device's thermal resistance of 1.2 C/W allows it to dissipate heat effectively, even in compact designs. The wide operating temperature range ensures reliable operation in industrial environments.
Recomendado
Motor Control
The STK035N4S8AG is well-suited for motor control applications, such as brushless DC (BLDC) motor drives. Its high current rating (35A) and low on-resistance enable efficient power delivery to the motor windings. The fast switching speed allows for high-frequency PWM, reducing audible noise and improving control precision. In a typical BLDC motor controller, three half-bridges are used, each with a high-side and low-side MOSFET. The STK035N4S8AG can be used in both positions, providing a compact and efficient solution. The AEC-Q101 qualification makes it suitable for automotive applications like electric power steering and cooling fans.
Recomendado
Load Switching
The STK035N4S8AG is an excellent choice for general load switching in industrial and consumer applications. Its low on-resistance ensures minimal voltage drop across the switch, reducing power loss. The device can handle inrush currents and short-circuit conditions due to its robust design. In a typical load switch circuit, the MOSFET is controlled by a logic signal, with a pull-down resistor to ensure it is off by default. The PowerFLAT 5x6 package's small footprint saves board space, while the exposed pad aids in heat dissipation. The wide input voltage range makes it compatible with various supply rails.
Recomendado
Battery Management System
In battery management systems (BMS), the STK035N4S8AG is used for cell balancing and protection. Its low on-resistance minimizes energy loss during balancing, improving system efficiency. The high current rating allows it to handle the high currents during charging and discharging. The AEC-Q101 qualification ensures reliability in automotive battery packs. In a typical BMS, the MOSFET is used in series with each cell to enable balancing, controlled by a battery management IC. The device's fast switching speed enables precise control, while the thermal performance ensures safe operation under high current conditions.
Recomendado
Power Supply Unit
The STK035N4S8AG is used in power supply units (PSUs) for servers, telecom, and industrial equipment. Its low on-resistance and fast switching speed improve efficiency, reducing energy consumption and heat generation. The device can operate at high frequencies, allowing for smaller transformers and inductors, reducing the overall size of the PSU. In a typical switch-mode power supply, the MOSFET is used in the primary side as a switch, with a PWM controller. The PowerFLAT 5x6 package's thermal performance ensures reliable operation even at high power levels. The wide operating temperature range makes it suitable for harsh environments.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para STK035N4S8AG — comparação, orientação de projeto e informações de conformidade.
Guia de seleção
Comparação com alternativas
| Parâmetro | Este produto | STL140N4LLF5 | STL120N4LLF5 | IPB035N04N | NTMFS4833N |
|---|---|---|---|---|---|
| Package | PowerFLAT 5x6 | PowerFLAT 5x6 | PowerFLAT 5x6 | D2PAK | SO-8FL |
| Brand | STMicroelectronics | STMicroelectronics | STMicroelectronics | Infineon | onsemi |
| Drain-Source Voltage (VDS) | 40 V | 40 V | 40 V | 40 V | 30 V |
| Continuous Drain Current (ID) | 35 A | 40 A | 30 A | 35 A | 30 A |
| On-Resistance (RDS(on)) | 4.5 mOhm | 5.5 mOhm | 6.5 mOhm | 3.5 mOhm | 5.0 mOhm |
| Total Gate Charge (Qg) | 30 nC | 35 nC | 28 nC | 25 nC | 32 nC |
| AEC-Q101 Qualified | Yes | Yes | Yes | Yes | No |
| Price (1pc) | $1.25 | $1.30 | $1.10 | $1.40 | $1.20 |
Principais diferenciais
- Lower on-resistance than STL140N4LLF5 (vs STL140N4LLF5)
- AEC-Q101 qualified (vs NTMFS4833N)
- Same package as STL140N4LLF5 (vs IPB035N04N)
Notas de projeto
The STK035N4S8AG has a junction-to-case thermal resistance of 1.2 C/W. For high-current applications, ensure adequate PCB copper area and thermal vias to dissipate heat. At 35A and 4.5 mOhm, power dissipation is approximately 5.5W, which can be managed with proper thermal design.
Place the gate driver as close to the MOSFET as possible to minimize gate loop inductance. Use a gate resistor (e.g., 10 ohm) to control switching speed and reduce EMI. Ensure the source connection is low-inductance to avoid voltage spikes during switching.
Do not exceed the maximum gate-source voltage of ±20V. Use a zener diode or TVS for gate protection if the drive voltage can spike. Also, ensure the drain-source voltage does not exceed 40V, especially during inductive switching, to avoid avalanche breakdown.
Informações de conformidade
AEC-Q101 qualified per STMicroelectronics datasheet. RoHS compliant.