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1N4003 PN Junction Diode Data
Key data for the 1N4003 diode including key electrical parameters, performance, features, outline, package type and many other key datasheet details.
The 1N4003 is one of the diodes in the 1N400x series and it offers a reverse voltage capability of 200V. These diodes have been available for many years and are still current devices, being manufactured by many companies, and being stocked by many main-line component distributors.
The 1N4003 and the other diodes in the series are described as being a general purpose rectifier with a low forward voltage drop, low leakage current and high forward surge capability.
Key details and performance parameters for the 1N4003 rectifier diode.
| 1N4003 diode datasheet parameters & data |
|
|---|---|
| Parameters | Details |
| Diode type | General purpose rectifier |
| Package type | DO41 |
| Repetitive peak reverse voltage, VRRM | 200 |
| Working peak reverse voltage, VRWM | |
| DC blocking voltage, VR | 200 |
| RMS reverse voltage, VR(RMS) | 140 |
| Forward continuous current, IF | 1A |
| Average rectified current, IF | 1A |
| Non-repetitive forward surge current, IFSM | 45A tp 1ms square wave |
| Power dissipation, PTOT | |
| Junction temperature (°C) | 150 |
| Forward voltage VF | 1.1 @ 1A |
| Breakdown voltage VBR | |
| Reverse leakage IR | 5µA |
| Diode capacitance CD | 15pF (4V 1 MHz) |
| Reverse recovery time | |
Outline & pinout:
Explanation of major diode parameters
| Parameter | Explanation |
|---|---|
| Repetitive peak reverse voltage, VRRM | This is the maximum value of the short period peak reverse voltage that can be sustained. |
| Working peak reverse voltage, VRWM | This is the maximum value of the continuous reverse voltage that can be applied to the diode. |
| DC blocking voltage, VR | This is the maximum reverse DC voltage that should be applied across the diode. |
| RMS reverse voltage, VR(RMS) | As many AC waveforms are quoted in RMS, this is the maximum reverse voltage that can be sustained where the voltage is expressed in terms of its RMS value. |
| Forward continuous current, IF | This is the maximum forward current that can be sustained by the diode. |
| Average rectified current, IF | This is the maximum average current value that can be handled by the diode. The parameter often states the load as this will affect the operation of the diode. |
| Non-repetitive forward surge current, IFSM | This is the maximum surge current that can be handled - it should only be present for a short time. |
| Parameter | Explanation |
|---|---|
| Power dissipation, PTOT | The maximum power dissipation that can be sustained within the device. |
| Junction temperature (°C) | This is the maximum temperature of the PN junction that can be sustained. Remember that the junction temperature can be much higher than the ambient temperature of the equipment. |
| Forward voltage VF | This parameter gives the forward voltage drop for a particular current passed through the diode. |
| Breakdown voltage VBR | This is the minimum voltage at which the diode may breakdown. If the current is not limited it will lead to the destruction of the device. |
| Leakage current IR | This is the current that flows under stated conditions when the diode is reverse biassed. |
| Diode capacitance CD | The diode capacitance, CD may also be referred to as the junction capacitance, CJ. All diodes have a certain capacitance across the PN junction. The value will be stated for a given reverse voltage. |
| Reverse recovery time | If a diode is initially driven in forward bias, and the polarity suddenly switches to reverse bias, the diode will still remain conducting for some time. The reverse recovery time is the time required for conduction to settle into the reverse bias state. |
These are the main operational amplifier parameters that have been included in our list. There are others, but these help quantify the main elements of the performance of the regulator, but are normally deemed to be less important.
Please note, that the data given is the best estimate we can give within a tabulated summary of this nature. Parameters also vary between manufacturers. Electronics Notes cannot accept any responsibility for errors, inaccuracies, etc, although we do endevaour to ensure the data is as accurate as possible.
Notes and supplementary information
• Availability & sources
The 1N4003 is available from a number of stockists and electronic component distributors many of which are given in the table below.
1N4003 Component Distributor, Stock and Pricing
• Understanding reverse voltage
It is very important to understand the reverse voltage ratings for rectifier diodes as it is important not to exceed their maximum reverse voltage.
Take the case of the simple half wave rectifier. Here the incoming waveform reaches a peak which is 1.414 times or √2 times that of the RMS input waveform.
However the load is likely to have a smoothing capacitor and this will adopt the peak value of the rectified waveform, which is again 1.414 times that of the incoming waveform.
Although there will be some discharge of the capacitor, it is always best to assume this peak value.
This means that the diode will not only have a reverse voltage arising from the blocking of the incoming waveform, but aso that of the voltage from charge held by the circuit.
In other words the whole reverse voltage will be twice 1.414 times or 2.828 times the RMS value of the incoming waveform, i.e. almost three times the value.
This is a really important factor as it is very easy to exceed the value for the reverse voltage.
Similar reasoning can be used for other forms of full wave rectifier including the bridge rectifier.
Written by Ian Poole .
Experienced electronics engineer and author.
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