1N4148TR: Small Signal Diode, 100V, 300mA, DO-35 Package

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The 1N4148TR is a small signal diode designed for general-purpose signal applications. This diode features a maximum repetitive reverse voltage of 100V and a forward current of up to 300mA, making it suitable for a wide range of low-power applications. The diode is encapsulated in a DO-35 package, which is known for its compact size and reliability.

Key characteristics of the 1N4148TR include its fast switching capabilities and low forward voltage drop. These features make it an ideal choice for high-speed switching applications. The diode's small package size and low power dissipation allow for its use in space-constrained designs, while its high reverse voltage rating provides a good margin for overvoltage protection.

• Maximum Repetitive Reverse Voltage (VRRM): 100V
• DC Forward Current (IF): 300mA
• Recurrent Peak Forward Current (Ifrm): 400mA
• Non-repetitive Peak Forward Surge Current (IFSM): 1A (Pulse Width = 1.0s), 4A (Pulse Width = 1.0μs)
• Operating Junction Temperature Range (TJ): -55 to +175°C
• Power Dissipation (PD): 500mW
• Thermal Resistance, Junction-to-Ambient (RθJA): 300°C/W
• Forward Voltage (VF) at IF = 10mA: 1.0V
• Reverse Leakage (IR) at VR = 20V: 0.025μA
• Total Capacitance (CT) at VR = 0, f = 1.0MHz: 4.0pF
• Reverse Recovery Time (trr) at IF = 10mA, VR = 6.0V: 4.0ns

• High-speed switching applications
• Signal processing
• Voltage clamping
• Protection circuits

Small signal diodes are semiconductor devices that permit current flow in one direction only, making them essential components in various electronic circuits for rectification, switching, and signal modulation. These diodes are characterized by their low power and small size, making them suitable for high-frequency and low-current applications.

When selecting a small signal diode, important parameters to consider include the maximum reverse voltage, forward current capacity, switching speed, and package type. The choice of diode depends on the specific requirements of the application, such as the need for fast switching speeds, low forward voltage drop, or high reverse voltage protection.

The 1N4148TR, a widely used small signal diode, exemplifies the balance between performance and size, offering fast switching speeds and a compact package. Its ability to handle moderate voltages and currents makes it versatile for a range of applications, from signal processing to protection circuits.

In summary, small signal diodes like the 1N4148TR play a crucial role in modern electronics, providing efficient and reliable solutions for signal control and protection in compact and low-power circuits. Understanding the key specifications and applications of these diodes can help engineers select the right component for their designs.