How to set/sweep individual device temperature?

You should probably also ask this question in the LT-Spice discussion group at

Good luck.

Regards,

Tom Gootee

Anton,

Here's the idea on the netlist level:

• D1 a 0 D temp={t} I1 0 a 1m D2 b 0 D I2 0 b 1m .step param t -55 125 5 .op .model D D .end

The temperature of diode instance D1 is swept from -55 to 125 degrees in 5 degree increments. Diode D2 is there to illustrate that the rest of the circuit is not temp swept in this.

To do this on the schematic level, control right click on the diode body and add "temp={t}" to one of the empty attribute fields after the diode model name which is simply "D". Below is a schematic that shows that.

--Mike

--- temp.asc --- Version 4 SHEET 1 880 680 WIRE -16 192 -16 160 WIRE -16 320 -16 272 WIRE 112 160 -16 160 WIRE 112 208 112 160 WIRE 112 320 112 272 WIRE 256 192 256 160 WIRE 256 320 256 272 WIRE 384 160 256 160 WIRE 384 208 384 160 WIRE 384 320 384 272 FLAG 112 320 0 FLAG -16 320 0 FLAG 384 320 0 FLAG 256 320 0 SYMBOL diode 96 208 R0 WINDOW 123 24 100 Left 0 SYMATTR InstName D1 SYMATTR Value 1N4148 SYMATTR Value2 temp={T} SYMBOL current -16 272 M180 WINDOW 0 24 88 Left 0 WINDOW 3 24 0 Left 0 SYMATTR InstName I1 SYMATTR Value 1m SYMBOL diode 368 208 R0 SYMATTR InstName D2 SYMATTR Value 1N4148 SYMBOL current 256 272 M180 WINDOW 0 24 88 Left 0 WINDOW 3 24 0 Left 0 SYMATTR InstName I2 SYMATTR Value 1m TEXT 112 392 Left 0 !.step param t -55 125 5 TEXT 112 424 Left 0 !.op