ARMY MIL-PRF-39009 E-2004 RESISTORS, FIXED, WIRE WOUND, (POWER TYPE, CHASSIS MOUNTED), NONESTABLISHED RELIABILITY, ESTABLISHED RELIABILITY, GENERAL SPECIFICATION FOR
This specification covers the general requirements for onestablished reliability(non-ER), and established reliability(ER), power type, wire wound, fixed resistors which utilize the principal of heat dissipation through a metal mounting surface.