Electronics World Cover,TOC,and list of posted Popular Electronics articles QST Radio & TV News Radio-Craft Radio-Electronics Short Wave Craft Wireless World About RF Cafe RF Cafe Homepage RF Cafe in Morse Code Google Search of RF Cafe website Sitemap Electronics Equations Mathematics Equations Equations physics Manufacturers & distributors Engineer Jobs Twitter LinkedIn Crosswords Engineering Humor Kirt's Cogitations Engineering Event Calendar RF Engineering Quizzes AN/MPN-14 Radar 5CCG Notable Quotes App Notes Calculators Education Magazines Software,T-Shirts,Coffee Mugs Articles - submitted by RF Cafe visitors Simulators Technical Writings RF Cafe Archives Test Notes Wireless System Designer RF Stencils for Visio Shapes for Word Search RF Cafe Sitemap Advertising Facebook RF Cafe Forums Thank you for visiting RF Cafe!

High Speed Diode - RF Cafe Forums

The original RF Cafe Forums were shut down in late 2012 due to maintenance issues. Original posts:

Amateur Radio | Antennas | Circuits & Components | Systems | Test & Measurement


antenna_ant
Post subject: High speed diode Posted: Mon Aug 22, 2005 3:59 pm
Hi,

I am looking for a diode or a rectifier IC that works at frequencies in the range of 3mhz to 50mhz.
The regular 1N4001 are not at all useful and are designed to work in the hertz range ( around 50hz).


thanx.


Top

Guest
Post subject: DiodePosted: Mon Aug 22, 2005 8:07 pm
Hi!

Try a 1N914, 1N3600, or 1N4148 if you just need an ordinary signal diode.

That said, do you need something special, like a 1 Amp current rating or a 100 PIV or greater rating?

Good Luck!


Top

antenna_ant
Post subject: re: diodePosted: Mon Aug 22, 2005 8:16 pm
I don't need the 1A diode. Just high speed for now.
Do you know if the rectification is good. I used 1N4001 to rectify a 3mhz signal, it just cannot do it. There is no rectification at that frequency, the input appears across the output with some voltage drop.

I really need a diode, that does not allow -ve part of the signal thru. Not even that little spike when signal crosses zero to -ve area.


Top

Guest
Post subject: Diode selectionPosted: Tue Aug 23, 2005 7:37 pm
Every PN junction diode has a Trr specification - "Time for Reverse Recovery", which represents the time necessary to remove carriers from the junction area. If you want zero, or as little as possible, you're pushed toward Schottky Barrier diodes.

Unfortunately, the junction capacitance of Schottky Barrier diodes is higher than that of PN junction diodes - and that may be an issue for you as well.

That said, I've had good luck with Agilent (HP) SBD's such as the 1N5712 in that frequency range.

Good Luck!



Posted  11/12/2012

RF Cafe Software

   Wireless System Designer - RF Cafe
Wireless System Designer

RF & EE Symbols Word
RF Stencils for Visio
Calculator Workbook
RF Workbench
Smith Chartâ„¢ for Visio
Smith Chartâ„¢ for Excel

About RF Cafe

Kirt Blattenberger - RF Cafe WebmasterCopyright
1996 - 2022
Webmaster:
Kirt Blattenberger,
 BSEE - KB3UON

RF Cafe began life in 1996 as "RF Tools" in an AOL screen name web space totaling 2 MB. Its primary purpose was to provide me with ready access to commonly needed formulas and reference material while performing my work as an RF system and circuit design engineer. The Internet was still largely an unknown entity at the time and not much was available in the form of WYSIWYG ...

All trademarks, copyrights, patents, and other rights of ownership to images and text used on the RF Cafe website are hereby acknowledged.

My Hobby Website:
 AirplanesAndRockets.com

Try Using SEARCH
to Find What You Need. 
There are 1,000s of Pages Indexed on RF Cafe !

height-line