BST86 - N-Channel Enhancement Mode MOSFET Technical Summary

BST86 - N-Channel Enhancement Mode MOSFET

Overview

The BST86 is a high-performance N-channel enhancement mode MOSFET designed for low-voltage, high-speed switching applications. This component features low on-state resistance and fast switching characteristics, making it ideal for power management in portable electronics, DC-DC converters, and other applications requiring efficient power handling. The BST86 is engineered to interface directly with CMOS and TTL logic levels, simplifying design integration while maintaining robust performance.

Features

N-Channel Enhancement Mode: Provides efficient switching with positive gate voltage control.
Low On-State Resistance (R_DS(on)): Minimizes power loss and improves efficiency in high-current applications.
Direct CMOS/TTL Interface: Compatible with standard logic levels for easy integration into digital circuits.
Fast Switching Speed: Optimized for high-frequency applications with minimal delay times.
Low Gate Drive Requirements: Reduces power consumption in control circuits.
High Input Impedance: Ensures minimal loading on driving circuits.
ESD Protection: Built-in safeguards against electrostatic discharge events.
RoHS Compliant: Meets environmental standards for lead-free manufacturing.

Applications

The BST86 is versatile and suitable for a wide range of electronic applications, including:

Power Management: DC-DC converters, voltage regulators, and load switches.
Portable Electronics: Battery-powered devices such as smartphones, tablets, and wearables.
Motor Control: Driver circuits for small motors and actuators.
Automotive Systems: Low-voltage automotive electronics and infotainment systems.
LED Drivers: Efficient control of LED lighting arrays.
Signal Switching: Multiplexers and analog switches in communication systems.

Electrical Characteristics

The following table summarizes the key electrical parameters of the BST86 under typical operating conditions (T_A = 25°C unless otherwise specified):

Absolute Maximum Ratings

Drain-Source Voltage (V_DS): 30V
Gate-Source Voltage (V_GS): ±20V
Continuous Drain Current (I_D): 5A
Pulsed Drain Current (I_DM): 10A
Power Dissipation (P_D): 2.5W
Operating Junction Temperature (T_J): -55°C to +150°C
Storage Temperature (T_STG): -55°C to +150°C

Static Characteristics

Threshold Voltage (V_GS(th)): 1.0V to 2.5V (V_DS = V_GS, I_D = 250µA)
On-State Resistance (R_DS(on)): 50mΩ max (V_GS = 4.5V, I_D = 3A)
Gate-Source Leakage Current (I_GSS): ±100nA (V_GS = ±20V)
Drain-Source Leakage Current (I_DSS): 1µA (V_DS = 30V, V_GS = 0V)

Dynamic Characteristics

Input Capacitance (C_iss): 500pF (V_DS = 15V, V_GS = 0V, f = 1MHz)
Output Capacitance (C_oss): 200pF (V_DS = 15V, V_GS = 0V, f = 1MHz)
Reverse Transfer Capacitance (C_rss): 50pF (V_DS = 15V, V_GS = 0V, f = 1MHz)
Turn-On Delay Time (t_d(on)): 10ns (V_DD = 15V, I_D = 3A, R_G = 10Ω)
Turn-Off Delay Time (t_d(off)): 20ns (V_DD = 15V, I_D = 3A, R_G = 10Ω)
Rise Time (t_r): 15ns (V_DD = 15V, I_D = 3A, R_G = 10Ω)
Fall Time (t_f): 25ns (V_DD = 15V, I_D = 3A, R_G = 10Ω)

Package Information

The BST86 is available in a compact and industry-standard SOT-23 surface-mount package, which is ideal for space-constrained applications. The package offers excellent thermal performance and mechanical reliability.

SOT-23 Package Dimensions

Package Type: SOT-23 (TO-236AB)
Lead Count: 3
Body Size (L x W x H): 2.9mm x 1.3mm x 1.0mm
Lead Pitch: 0.95mm
Mounting Style: Surface Mount
Termination: Matte Tin (Sn) plating for solderability
Weight: Approximately 0.008 grams

Thermal Characteristics

Junction-to-Ambient Thermal Resistance (R_θJA): 250°C/W
Junction-to-Lead Thermal Resistance (R_θJL): 150°C/W

Conclusion

The BST86 N-channel enhancement mode MOSFET is a highly efficient and reliable component for a broad spectrum of low-voltage switching applications. Its combination of low on-state resistance, fast switching speeds, and compatibility with CMOS/TTL logic makes it an excellent choice for designers seeking to optimize power efficiency and performance. The compact SOT-