3.6.6Thermistor Resistance

The resistance of the thermistor at the operating temperature TX (°C) is determined using the following equation (7).

Equation (7):

1 1

RX=R25 ⋅ EXP

B ⋅

−

273+TX 298

RX: Resistance at operating temperature Tx (°C)

R25: 30 kΩ ± 5% (25°C)

B:3950 K ± 2 %

TX: Operating temperature (°C)

EXP (A) : The Ath power of natural logarithm e (2.71828)

[Rating]

Operating temperature range: -40 °C to +125 °C

’Resistanceï ’ l i‚ ‹ƒ(kΩj)

100

10

1

0

10

20

30

40

50

60

70

80

90

100

‰“· x i Ž j°

Temperature ( C)

Figure 3-14 Thermistor Resistance vs. Temperature

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