Typical Applications

Temperature Rise of LM34 Due to Self-Heating (Thermal Resistance)

Conditions

TO-46,

TO-46,

TO-92,

TO-92,

SO-8

SO-8

No Heat

Sink

Small Heat Fin

(Note 14)

No Heat

Sink

Small Heat Fin

(Note 15)

No Heat

Sink

Small Heat Fin

(Note 15)

Still air

720˚F/W

180˚F/W

324˚F/W

252˚F/W

400˚F/W

200˚F/W

Moving air

180˚F/W

72˚F/W

162˚F/W

126˚F/W

190˚F/W

160˚F/W

Still oil

180˚F/W

72˚F/W

162˚F/W

126˚F/W

Stirred oil

90˚F/W

54˚F/W

81˚F/W

72˚F/W

(Clamped to metal,

(43˚F/W)

(95˚F/W)

infinite heat sink)

Note 14: Wakefield type 201 or 1" disc of 0.020" sheet brass, soldered to case, or similar.

Note 15: TO-92 and SO-8 packages glued and leads soldered to 1" square of 1/16" printed circuit board with 2 oz copper foil, or similar.

DS006685-7

FIGURE 3. LM34 with Decoupling from Capacitive Load

DS006685-8

FIGURE 4. LM34 with R-C Damper

Two-Wire Remote Temperature Sensor

(Grounded Sensor)

DS006685-9

FROM +3˚F TO + 100˚F

Two-Wire Remote Temperature Sensor

(Output Referred to Ground)

DS006685-10

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