HI. Can I use an RFB03 to replace a KBU4g in an existing power supply? Just run short wires from RFB03 to existing solder pads for KBU4G in power supply board? If I can, what diodes can I use (MUR3040)? Thanks in advance.
MUR3040 won't fit, the wrong pinning. You can use a TO220 2-pin diode or a TO218/247 3-pin diode.
Thanks. Another question: what is the difference between the RFB02 and the RFB03?
Gold on pads
No groundplane under the heatsinks