1N4148 Diode | Datasheet | Signal Diode | Specifications Diotec Semiconductor

1N4148 diode and its analogues

1N4148 Diode Pinout

1n4148 Picture

1N4148 diode is mainly used for fast switching, known as high-speed switching diode.1N4148 diode allows only unidirectional flow of current, the maximum reverse withstand voltage value of 100V, the maximum current-carrying capacity of 200mA, can withstand peak currents up to 1A/ms, in the forward current of 10mA, the fast recovery time of only 4ns.Due to its excellent performance and low price, it has been Due to its excellent performance and low price, it is widely used in various industries of electronic circuits.

Two modes of operation:

Forward bias: conducts to allow current to flow; reverse cut-off: acts as an open switch, acting as a break in the circuit.

Pin configuration of 1N4148 diode

Anode: current inflow pin
Cathode: current outflow pin
How to judge the anode and cathode: package is DO-35 physical look at the ring-shaped side is the cathode, the other side is the anode; patch type of physical objects have a vertical line is the cathode; in the drawing of the schematic diagram is still a vertical line is the cathode.