BS107 N-Channel Enhancement Mode MOSFET

Overview

The BS107 is a silicon N-channel enhancement mode vertical DMOS FET designed for low-power switching applications. This MOSFET offers excellent performance in low-voltage, low-current circuits with its high input impedance and fast switching speeds. The BS107 is particularly well-suited for interfacing directly with CMOS and TTL logic circuits due to its low threshold voltage requirements.

With its compact design and reliable performance characteristics, the BS107 serves as an ideal solution for a wide range of general-purpose switching applications in consumer electronics, industrial controls, and telecommunications equipment.

Key Features

• N-channel enhancement mode design
• Low threshold voltage for direct CMOS/TTL interface
• High input impedance
• Fast switching speeds
• Low gate drive power requirements
• Excellent thermal stability
• Compact and space-efficient package options
• RoHS compliant versions available

Applications

The BS107 finds use in a variety of electronic applications including:

• Low-power switching circuits
• Signal routing and multiplexing
• CMOS/TTL logic interface circuits
• Relay and solenoid drivers
• Small motor control
• Battery-powered devices
• Consumer electronics
• Industrial control systems
• Telecommunications equipment
• Automotive electronics (non-critical systems)

Electrical Characteristics

(All values typical at 25°C unless otherwise specified)

Absolute Maximum Ratings

• Drain-Source Voltage (V_DS): 200V
• Gate-Source Voltage (V_GS): ±20V
• Continuous Drain Current (I_D): 0.1A
• Pulsed Drain Current (I_DM): 0.3A
• Total Power Dissipation (P_tot): 0.5W
• Operating Junction Temperature Range: -55°C to +150°C
• Storage Temperature Range: -55°C to +150°C

Static Characteristics

• Threshold Voltage (V_GS(th)): 1-2.5V (V_DS=V_GS, I_D=250µA)
• Drain-Source On-State Resistance (R_DS(on)): 30Ω max (V_GS=10V, I_D=50mA)
• Forward Transconductance (g_fs): 30mS min (V_DS=10V, I_D=50mA)
• Gate-Source Leakage Current (I_GSS): ±100nA max (V_GS=±20V)
• Drain-Source Leakage Current (I_DSS): 1µA max (V_DS=200V, V_GS=0V)

Dynamic Characteristics

• Input Capacitance (C_iss): 15pF typical (V_DS=25V, V_GS=0V, f=1MHz)
• Output Capacitance (C_oss): 5pF typical
• Reverse Transfer Capacitance (C_rss): 3pF typical
• Turn-On Delay Time (t_d(on)): 10ns typical (V_DD=50V, I_D=50mA, R_G=25Ω)
• Turn-Off Delay Time (t_d(off)): 25ns typical
• Rise Time (t_r): 15ns typical
• Fall Time (t_f): 20ns typical

Package Information

The BS107 is available in several industry-standard packages:

TO-92 Package

• Package Type: Molded plastic, through-hole
• Dimensions: 4.7mm x 3.7mm x 4.9mm (typical)
• Lead Spacing: 2.54mm (0.1 inch)
• Weight: Approximately 0.13 grams
• Termination: Tin-plated leads
• Moisture Sensitivity Level (MSL): MSL 1 (unlimited floor life)

SOT-23 Package

• Package Type: Surface mount
• Dimensions: 2.9mm x 1.3mm x 0.95mm (typical)
• Lead Pitch: 0.95mm
• Weight: Approximately 0.008 grams
• Termination: Matte tin finish
• Moisture Sensitivity Level (MSL): MSL 1 (unlimited floor life)

Thermal Characteristics

• Thermal Resistance, Junction-to-Ambient (R_θJA): 357°C/W (TO-92 package)
• Thermal Resistance, Junction-to-Case (R_θJC): 83.3°C/W (TO-92 package)

Handling and Mounting Considerations

When working with the BS107 MOSFET, observe the following precautions:

• Use proper ESD protection when handling devices
• Avoid applying voltages beyond absolute maximum ratings
• For TO-92 package: Bend leads no closer than 3mm from package body
• For SOT-23 package: Follow recommended reflow profile for soldering
• Ensure proper heat dissipation in high ambient temperature applications
• Do not exceed maximum junction temperature rating

Reliability and Qualification

The BS107 MOSFET meets or exceeds the following reliability standards:

• JEDEC JESD22-A104 Temperature Cycling
• JESD22-A101 Steady State Temperature Humidity Bias Life Test
• JESD22-A105 High Temperature Storage Life
• RoHS compliance (for designated versions)

Ordering Information

The BS107 is available in various packaging options:

• BS107-T: TO-92 package, bulk packaging (1000 pieces per bag)
• BS107-TR: TO-92 package, tape and reel (2000 pieces per reel)
• BS107-S: SOT-23 package, bulk packaging (3000 pieces per bag)
• BS107-SR: SOT-23 package, tape and reel (3000 pieces per reel)
• BS107-LF: Lead-free version, TO-92 package