KTY81-1SERIES_3
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DATA SHEET
Product specification
Supersedes data of 1998 Mar 26
2000 Aug 25
DISCRETE SEMICONDUCTORS
KTY81-1 seriesSilicon temperature sensors
book, halfpage
M3D239
2000 Aug 25
2
Philips Semiconductors
Product specification
Silicon temperature sensors
KTY81-1 series
DESCRIPTION
The temperature sensors in the KTY81-1 series have a
positive temperature coefficient of resistance and are
suitable for use in measurement and control systems. The
sensors are encapsulated in the SOD70 leaded plastic
package.
Tolerances of 0.5% or other special selections are
available on request.
PINNING
PIN
DESCRIPTION
1
electrical contact
2
electrical contact
3
not to be connected to a potential
Fig.1 Simplified outline (SOD70).
handbook, halfpage
MBH739
2
3
1
MARKING
TYPE NUMBER
CODE
KTY81-110
110
KTY81-120
120
KTY81-121
121
KTY81-122
122
KTY81-150
150
KTY81-151
151
KTY81-152
152
QUICK REFERENCE DATA
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
R25
sensor resistance
Tamb = 25 °C; Icont = 1 mA
KTY81-110
990
1010
Ω
KTY81-120
980
1020
Ω
KTY81-121
980
1000
Ω
KTY81-122
1000
1020
Ω
KTY81-150
950
1050
Ω
KTY81-151
950
1000
Ω
KTY81-152
1000
1050
Ω
Tamb
ambient operating
temperature
−55
+150
°C
2000 Aug 25
3
Philips Semiconductors
Product specification
Silicon temperature sensors
KTY81-1 series
LIMITING VALUESIn accordance with the Absolute Maximum Rating System (IEC 60134).
CHARACTERISTICSTamb = 25 °C, in liquid, unless otherwise specified.
Notes
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 47.4
°C is the thermal time constant.
2. Inert liquid, e.g. FC43 manufactured by the 3M company.
SYMBOL
PARAMETER
CONDITIONS
MIN.
MAX.
UNIT
Icont
continuous sensor current
in free air; Tamb = 25 °C
−
10
mA
in free air; Tamb = 150 °C
−
2
mA
Tamb
ambient operating temperature
−55
+150
°C
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP.
MAX.
UNIT
R25
sensor resistance
Icont = 1 mA
KTY81-110
990
−
1010
Ω
KTY81-120
980
−
1020
Ω
KTY81-121
980
−
1000
Ω
KTY81-122
1000
−
1020
Ω
KTY81-150
950
−
1050
Ω
KTY81-151
950
−
1000
Ω
KTY81-152
1000
−
1050
Ω
TC
temperature coefficient
−
0.79
−
%/K
R100/R25
resistance ratio
Tamb = 100 °C and 25 °C 1.676
1.696
1.716
R−55/R25
resistance ratio
Tamb = −55 °C and 25 °C 0.480
0.490
0.500
τ
thermal time constant; note 1
in still air
−
30
−
s
in still liquid; note 2
−
5
−
s
in flowing liquid; note 2
−