MIL-PRF-19500P
APPENDIX B
TRAPATT................................................. Trapped plasma avalanche transit time diode
TRB .......................................................... Technical review board
UHF.......................................................... Ultra high frequency
VMOS ...................................................... V-Groove metal oxide semiconductor
B.3.2 Symbols. Previous symbols are in parentheses.
F ............................................................... Spot noise figure (NF)
F ............................................................... Average NF
RθJAM .............................................Thermal resistance junction to adhesive mount
RθJSP ..............................................Thermal resistance surface mount junction to solder point
RθJX ........................................................ Thermal resistance (θ)
RθCA........................................................ Thermal resistance, case to ambient
RθJA ........................................................ Thermal resistance, junction to ambient (θJ-A)
RθJC ........................................................ Thermal resistance, junction to case (θJ-C)
RθJEC ...................................................... Thermal resistance, junction to end cap
RθJL......................................................... Thermal resistance, junction to lead
RθJR ........................................................ Thermal resistance, junction to reference
TA ............................................................ Ambient or free air temperature
TC ............................................................ Case temperature
TEC ........................................................... End cap temperature
TJ ............................................................. Junction temperature
TL ............................................................. Lead temperature
Top ........................................................... Operating temperature
TSTG ....................................................... Storage temperature
td .............................................................. Delay time
tf ............................................................... Fall time
toff ............................................................ Turn off time
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