@rohithinthingstech wrote:Could someone help identify the part number and range for the SB1 component on the STM32F407G-DISC1 board? I'm interested in understanding its exact specifications.
As already noted, "SB" is a Solder Bridge:
Just like a Jumper ("JP") it allows a connection to be easily made (closed) or broken (opened) - to allow configuration to a user's requirements.
https://electronics.stackexchange.com/questions/261106/solder-bridge-in-schematics-and-0-resistors
They use these Solder Bridges rather than traditional Jumper links because:
- They are cheaper
- They are smaller
- They are easier for board assembly.
In some cases, rather than just use a "blob" of solder, a zero-ohm resistor (aka "zero-ohm link") will be fitted:
https://en.wikipedia.org/wiki/Zero-ohm_link
Here's an example - where SB53 (at the top) is "closed" with a zero-ohm link, and the others are "open":
Note that, in some cases, the pads of a Solder Bridge may have a track connecting them; eg,
https://www.reddit.com/r/KiCad/comments/p2bg9y/solder_jumper_usage_conceptual_question/
To "break" this kind of bridge, you need to cut that track.
I don't think that ST use this type - but other manufacturers certainly do
#SolderBridge #SB
