MIL-PRF-39007/7G, PERFORMANCE SPECIFICATION, RESISTORS, FIXED, WIRE-WOUND (ACCURATE), NONESTABLISHED RELIABILITY, AND ESTABLISHED RELIABILITY STYLE RBR78 (9 OCT 1997)., This specification covers the performance requirements for style RBR78, nonestablished reliability, established reliability, and space level, power type, wire-wound, fixed resistor. These resistors are available with terminal types “S”(solderable, inductively wound), “N” (solderable, noninductively wound), and “Z” (weldable, noninductively wound).