These fuel figures for the F-35A from 2012 may be outdated - may give clues however...
AIR FORCE INSTRUCTION 11-2F-35A, VOLUME 3; 7 JUNE 2012 Flying Operations,
F-35A OPERATIONS PROCEDURES page 22
“...
3.20. Fuel Requirements.
"...3.20.3. Normal Recovery Fuel. The fuel on initial or at the final approach fix at the base of intended landing or alternate, if required. Fuel quantity will be as established locally or
2,500 pounds, whichever is higher.
3.20.4. Declare the following when it becomes apparent that an aircraft may land at the intended destination or alternate, if required, with:
3.20.4.1. Minimum Fuel. 1,800 pounds or less. This is based on 20 minutes reserve at 10,000 feet MSL flying max endurance airspeed (fulfilling AFI 11-202V3 fuel reserve requirements); and,
3.20.4.2. Emergency Fuel. 1,200 pounds or less.
http://www.bits.de/NRANEU/others/END...-35av3(12).pdf