#####   
 ##  ##  
 ##      
 ##      
 ##      
         

         
         
  ####   
 ##  ##  
 ##      
 ##  ##  
  ####   
         

     ### 
  #####  
 ##  ##  
 ##  ##  
 ##  ##  
 ##  ##  
  ### ## 
         

         
         
 ##  ##  
  ####   
   ##    
  ####   
 ##  ##  
         

_________
\__   __/
   ) (   
   | |   
   | |   
   | |   
   | |   
   )_(   
         

IMPORTANT: enter the case-INsensitive alphabetic (no numbers) code AND WRITE SOME SHORT summary of changes (below) if you are saving changes. (not required for previewing changes). Wiki-spamming is not tolerated, will be removed, so it does NOT even show up in history. Spammers go away now.


Visit Preferences to set your user name
Summary of change:
This page is about diodes, mainly for developers. (flyback and small current diodes as well). ---- '''low voltage power flyback''': 50V, 1A diode/SMB * S2x eg. S2M (see below) ---- '''high voltage flyback''' SMB footprint transient suppression diode (we use 6.8V and 20V). We also use a big throughole (18V or 22V) transient suppression diode for the 14V supply-in, but that's another story. ---- '''simple small cheap diode for railing''' used for protecting other devices. 30V, 500mA dioda/SOD80C 20V, 10mA dioda/SOD110: * LL4148 common for upto 50V-75mA used at many places since v3.1. ---- '''the generic S2x family''' For normal (not schottky, not fast, not zener) SMD diodes there is a family supported by all manufacturers (Fagor, General Semiconductor, On) * first char is S * second is current-limit (roughly 1, 2, 3A ) and packaging 1: SMA, 2: SMB, 3: SMC. * third is voltage (A: 50V, B: 100V, D: 200V, G: 400V, J: 600V, K: 800V, M: 1000V) We often use S2M, which is 2A-1000V or S2J (2A-600V) (note: 2A is often 1,5A, and 3 is only 2,5A...) ---- See also: * GenBoard/PowerSwitcher * GenBoard/PowerSwitcher/IGBT * GenBoard/PowerSwitcher/FET * GenBoard/PowerSwitcher/Diode
Optional: Add document to category:
Wiki formatting: * is Bullet list ** Bullet list subentry ... '''Bold''', ---- is horizontal ruler, <code> preformatted text... </code> See wiki editing HELP for tables and other formatting tips and tricks.