sorry don't know the SOT package numbers, did look but not found
Perhaps voltage regulator or bucky controllers BJSQ
5 pin , size of body area, 2.8 x 1.5mmsame physical type but top code JAPL
JB
1G (number one not I) 4 pin on perhaps a pass transistor, size of body 4.3x 2.4mm
-- You can\'t have a sense of humor, if you have no sense!
The BJSQ is ohmic and heating up loading down the 9V battery. 4 actual pins
0V, 9V, an output that should be about 1.5V less than an external reference voltage of 5V applied to the fourth pin. If no info found I will try an LM317 and a couple of resistors to set at 3.5V .ElectronDepot website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.