Datasheet

KTY82_SER_4 © NXP B.V. 2008. All rights reserved.
Product data sheet Rev. 04 — 14 January 2008 4 of 17
NXP Semiconductors
KTY82 series
Silicon temperature sensors
6. Characteristics
[1] The thermal time constant is the time taken for the sensor to reach 63.2 % of the total temperature difference. For example, if a sensor
with a temperature of 25 °C is moved to an environment with an ambient temperature of 100 °C, the time for the sensor to reach a
temperature of 72.4 °C is the thermal time constant.
Table 6. Characteristics
T
amb
=25 ° C; in liquid; unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
R
25
sensor resistance I
sen(cont)
=1mA
KTY82/110 990 - 1010 Ω
KTY82/120 980 - 1020 Ω
KTY82/121 980 - 1000 Ω
KTY82/122 1000 - 1020 Ω
KTY82/150 950 - 1050 Ω
KTY82/151 950 - 1000 Ω
KTY82/210 1980 - 2020 Ω
KTY82/220 1960 - 2040 Ω
KTY82/221 1960 - 2000 Ω
KTY82/222 2000 - 2040 Ω
KTY82/250 1900 - 2100 Ω
KTY82/251 1900 - 2000 Ω
KTY82/252 2000 - 2100 Ω
TC temperature coefficient - 0.79 - %/K
R
100
/R
25
resistance ratio T
amb
= 100 °C and 25 °C 1.676 1.696 1.716
R
−55
/R
25
resistance ratio T
amb
= −55 °C and 25 °C 0.480 0.490 0.500
∆R
25
drift of sensor resistance at
25 °C
10000 h continuous
operation; T
amb
= 150 °C
KTY82/1 series - 1.6 - Ω
KTY82/2 series - 3.2 - Ω
τ
th
thermal time constant in still air
[1]
-7-s
in still liquid
[1]
-1-s
in flowing liquid
[1]
- 0.5 - s