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SB540 5A Schottky Diode Data
Highlight data for the SB540 5A 40V leaded Schottky diode which includes electrical parameters, performance, features, outline, package type and many other key datasheet details.
The SB540 is one of a series of high current (5A) Schottky diodes providing a low forward voltage drop, a high surge capacity, fast switching and good high frequency operation.
The diode silicon structure includes a guard ring to reduce the risk of unwanted reverse breakdown.
Key details and performance parameters for the SB540 Schottky diode.
| SB540 diode datasheet parameters & data |
|
|---|---|
| Parameters | Details |
| Diode type | 5A 50V Schottky diode |
| Package type | DO201 |
| Repetitive peak reverse voltage, VRRM | 40V |
| Working peak reverse voltage, VRWM | 40V |
| DC blocking voltage, VR | 40V |
| RMS reverse voltage, VR(RMS) | 28V |
| Forward continuous current, IF | 5A |
| Non-repetitive forward surge current, IFSM | 220A for 8.5 ms |
| Power dissipation, PTOT | |
| Junction temperature (°C) | 150 |
| Forward voltage VF | 0.48V @ 5A @ 25°C |
| Reverse leakage IR | 0.5mA @ 25°C |
| Diode capacitance CD | |
| 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 SB540 is available from a number of stockists and electronic component distributors many of which are given in the table below.
SB540 Component Distributor, Stock and Pricing
• Further details
The SB540 is one of a series of leaded Schottky diodes, SB520 - SB560 with a 5A continuous current, IF capability. The diodes have a reverse voltage, VR ranging from 20V up to 60V as indicated by the last two figures in the part number.
The good current capability, combined with the fast switching and good high frequency operation opens this device to being used in a variety of circuits of various types.
The devices is intended for use in low voltage high frequency inverters, freewheeling, dc-to-dc converters, and polarity protection applications.
The SB540 is one of the lower voltage capability diodes, but it can still be used for a wide variety of circuits and applications. Care, must be taken, though, not to exceed the maximum 40V reverse voltage rating.
Written by Ian Poole .
Experienced electronics engineer and author.
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