Can anyone please help me to find what SMD component this is?
It is connected to 24 VDC on one side side (positive) and the other side to negative.
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Sign up to join this communityCan anyone please help me to find what SMD component this is?
It is connected to 24 VDC on one side side (positive) and the other side to negative.
Marking DFM
could be a SMLJ33CA (Micro commercial components corp) from a google search.
Looking up SMLJ33CA at www.littelfuse.com under Competitor Cross Reference, several candidates are shown. Looking through them, of course the last one shows a match. Marking DFM
is Littelfuse model SMDJ33CA-HR.
This is a 33 Volt TVS or Transient Voltage Suppressor. These are like Zener diodes, in that once a certain threshold voltage is reached, they start to conduct. The net effect is that they clamp a voltage surge and prevent it from getting much higher.
These are commonly used on the power inputs of devices to prevent damage from over-voltage stress.