Help: Identifying a component on the SMPS PCB

• Help: Identifying a component on the SMPS PCB
  Posted by electrovanga on 25 Oct, 2023 07:22
• Hello fellows,
  I would like to know what this component is on the SMPS PCB. It looks like inductor but I am not sure.
  After Full bridge rectifier, these components are coming.

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• #1 Reply
  Posted by Roehrenonkel on 25 Oct, 2023 08:25
• Hi,
   
  Melf-resistors.
  
  Good luck
  
• #2 Reply
  Posted by electrovanga on 25 Oct, 2023 11:24
• Quote from: Roehrenonkel on 25 Oct, 2023 08:25

  Hi,
   
  Melf-resistors.
  
  Good luck
  
  

  Hello,
  Thanks for your support. What purpose are they used? When not normal resistors? What is the difference? Could you help me shortly, please?
• #3 Reply
  Posted by wraper on 25 Oct, 2023 11:48
• They are normal resistors, MELF is package type.
• #4 Reply
  Posted by Psi on 25 Oct, 2023 11:51
• They were popular for a while, before being mostly replaced with the package type we use now to reduce cost.
  
  You can still get them though, for some obscure things.
  They perform better for long term stability, moisture resistance and reliability.
  
  The color codes are the same as normal through hole resistors, afaik