1N4148 Diode
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| 1N4148 Diode |
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| 1N4148 Diode Pinout |
1N4148 Pin Configuration
Pin No.
|
Pin Name
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Description
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1
|
Anode
|
Current always Enters through Anode
|
2
|
Cathode
|
Current always Exits through Cathode
|
1N4148 Diode Characteristics
- Fast switching Diode
- Peak repetitive reverse voltage is 100V
- RMS reverse voltage is 75V
- Peak forward surge current is 2A
- Forward continuous current If 300mA
- Reverse recovery time 8ns
- Available in DO-35 Package
1N4148 Equivalent Diodes
1N914, IN914A, 1N914B, 1N916, 1N916A, 1N916B, 1N4448, 1N4448WS, 1N4448W, 1N4148WS
Description
A diode is a device that allows current flow through only one direction. That is the current should always flow from the Anode to cathode. The cathode terminal can be identified by using a grey bar as shown in the picture above.
For IN4148 Diode, the maximum current carrying capacity is 300mA it can withstand peaks up to 2A. The specialty of this diode is its fast recovery time of 8ns at a forward current of 10mA, hence this diode is used in places where fast switching is involved.
Applications of Diodes
- Can be used to prevent reverse polarity problem
- Protect Power electronic switches that are operating with high switching frequency.
- Half Wave and Full Wave rectifiers
- Used as a protection device
- Current flow regulators
2D representation (DO-35)
A 1N4148 like many diodes doesn't start to conduct until a critical voltage is present. We see this variously quoted as somewhere between 0.5V and for a LED might be 1.2V.
ReplyDeleteI want to know what is the leakage conduction BEFORE that threshold wherever it might be voltage-wise.
What is the Forward leakage (if any) BEFORE conduction begins?