alternative to a buk 453

SgtWookie

Joined Jul 17, 2007
22,230
The BUK 453 is not rated for 100A; it is rated for 100V Vds.
An IRF530 would be an equivalent replacement.
If you are only going to be using it for a 1A current sink, use an IRF510.

However, you must use a 10V supply, not an 8V supply as shown. (8v wasn't correct for the BUK 453, either.) If you want to use an 8v supply, use an IRL510, which is a logic-level power MOSFET.
 

Wendy

Joined Mar 24, 2008
23,415
You can also get a digital style MOSFETs, that uses smaller voltages on the gate. I don't have any part numbers to recommend, but I went with my local source (Tanner's) and asked.
 

Thread Starter

markosillypig

Joined Jul 21, 2008
188
just another quick one
i have made the circuit board today and now when it comes to assembling it i can not figure out what L1 is on the scamatic and where does J15 connect to
picture included

could anyone help please
 

Attachments

Last edited:

beenthere

Joined Apr 20, 2004
15,819
L1 is a 22 microhenry hash filter. It tries to keep high frequency noise out of the Vcc feed to the microcontroller. Double check the proper pin for the Vcc voltage input.
 
Top