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i need power schottky diode

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niks

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what is vrr for diode

i need on High Voltage schottky Power Rectifier
a) Vforward drop (Vf<=0.75)
b) Forware Current (If=<=1A)
c) Reverse Recovery Voltage ( >120V)
d) package (SMD).
 

Roel

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Scottky Power diodes

See the MBRS-series from Fairchild and ONsemi.

Example: MBRS140: 40v reverse voltage, 1 Amp, SMB package

I don't know if they have diodes up to 120Volt. Have a look at it.

Roel
 

layoutdude

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Also have a look ar International Rectifier

www.irf.com

I have used *many* diodes with VRR > 150 V and If > 10 Amps

Your Vf will probably be lower because of your low forward current.

For example p/n 10CTQ150 is right around 0.75 volts @ 1 amp @ 25 C (rated at 0.93 volts @ 10 amps)
 

niks

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need small package

thanx for the reply. but i need small packages . Just now i have STPS1H100A i.e. SMA package. i smaller or slightly bigger package.im very much concern about the area.
regards
~niks~
 

mystery

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you may also look at microsemi products
 

penrico

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There is Diodes from Panjit too, S100 for example.
 

niks

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hi
i checked all the sites but maximum Vrrm = 100V in SMD package. i want SMD (SMA preferably), Vrrm > 120
regards
~niks~
 

penrico

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If you need Vrms>120v and you have 100v, and Vf<0,75v, you can connect serialy two 100v schotkly diodes, you may equalizate boths diodes using resistors.


Diode Resistor Diode Resistor
----|>-----/\/\/\/\------|>-------/\/\/\/\-----

To calculate resistor value, use the maximun current of circuit, remember that schotkly diode is Vf=0,3 to 0,4v.

it help :?:
 

layoutdude

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I think you are asking for too much.

Consider the power in the part is going to be at least 0.75 watts (Vf * If), which is probably too much for a small package like SMA (SMB or SMC more likely, even better to use DPAK).

Best of luck, but I think you are going to have a difficult time locating anything.
 

niks

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yes my design is having critical requirement.
i got one. BAT240A from Infineon.
 

pool_77

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What about to use FET as a diode

pool_77
 

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