Philips KTY81-252, KTY81-251, KTY81-250, KTY81-221, KTY81-210 Datasheet
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DISCRETE SEMICONDUCTORS
DATA SH EET
ook, halfpage
M3D053
KTY81-2 series
Silicon temperature sensors
Product specification
Supersedes data of 1996 Dec 06
File under Discrete Semiconductors, SC17
1998 Mar 26
Philips Semiconductors Product specification
Silicon temperature sensors KTY81-2 series
DESCRIPTION
The temperature sensors in the KTY81-2 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.
MARKING
TYPE NUMBER CODE
KTY81-210 210
KTY81-220 220
KTY81-221 221
KTY81-222 222
KTY81-250 250
KTY81-251 251
KTY81-252 252
QUICK REFERENCE DATA
PINNING
PIN DESCRIPTION
1 electrical contact
2 electrical contact
3 not to be connected to a potential
handbook, halfpage
3
Fig.1 Simplified outline (SOD70).
1
2
MBH739
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
R
25
sensor resistance T
amb
=25°C; I
cont
=1mA
KTY81-210 1980 2020 Ω
KTY81-220 1960 2040 Ω
KTY81-221 1960 2000 Ω
KTY81-222 2000 2040 Ω
KTY81-250 1900 2100 Ω
KTY81-251 1900 2000 Ω
KTY81-252 2000 2100 Ω
T
amb
ambient operating
−55 +150 °C
temperature
1998 Mar 26 2
Philips Semiconductors Product specification
Silicon temperature sensors KTY81-2 series
LIMITING VALUES
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
I
cont
T
amb
CHARACTERISTICS
=25°C, in liquid, unless otherwise specified.
T
amb
SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT
R
25
TC temperature coefficient − 0.79 − %/K
R
100/R25
R
−55/R25
τ thermal time constant; note 1 in still air − 30 − s
continuous sensor current in free air; T
in free air; T
=25°C − 10 mA
amb
= 150 °C − 2mA
amb
ambient operating temperature −55 +150 °C
sensor resistance I
cont
=1mA
KTY81-210 1980 − 2020 Ω
KTY81-220 1960 − 2040 Ω
KTY81-221 1960 − 2000 Ω
KTY81-222 2000 − 2040 Ω
KTY81-250 1900 − 2100 Ω
KTY81-251 1900 − 2000 Ω
KTY81-252 2000 − 2100 Ω
resistance ratio T
resistance ratio T
= 100 °C and 25 °C 1.676 1.696 1.716
amb
= −55 °C and 25 °C 0.480 0.490 0.500
amb
in still liquid; note 2 − 5 − s
in flowing liquid; note 2 − 3 − s
rated temperature range −55 − +150 °C
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 72.4 °C is the thermal time constant.
2. Inert liquid, e.g. FC43 manufactured by the 3M company.
1998 Mar 26 3
Philips Semiconductors Product specification
Silicon temperature sensors KTY81-2 series
Table 1 Ambient temperature, corresponding resistance, temperature coefficient and maximum expected temperature
error for KTY81-210 and KTY81-220
I
= 1 mA.
cont
AMBIENT
TEMPERATURE
(°C) (°F) (%/K)
−55 −67 0.99 951 980 1009 ±3.02 941 980 1019 ±4.02
−50 −58 0.98 1000 1030 1059 ±2.92 990 1030 1070 ±3.94
−40 −40 0.96 1105 1135 1165 ±2.74 1094 1135 1176 ±3.78
−30 −22 0.93 1218 1247 1277 ±2.55 1205 1247 1289 ±3.62
−20 −4 0.91 1338 1367 1396 ±2.35 1325 1367 1410 ±3.45
−10 14 0.88 1467 1495 1523 ±2.14 1452 1495 1538 ±3.27
0 32 0.85 1603 1630 1656 ±1.91 1587 1630 1673 ±3.08
10 50 0.83 1748 1772 1797 ±1.67 1730 1772 1814 ±2.88
20 68 0.80 1901 1922 1944 ±1.41 1881 1922 1963 ±2.66
25 77 0.79 1980 2000 2020 ±1.27 1960 2000 2040 ±2.54
30 86 0.78 2057 2080 2102 ±1.39 2036 2080 2123 ±2.68
40 104 0.75 2217 2245 2272 ±1.64 2194 2245 2295 ±2.97
50 122 0.73 2383 2417 2451 ±1.91 2359 2417 2475 ±3.28
60 140 0.71 2557 2597 2637 ±2.19 2531 2597 2663 ±3.61
70 158 0.69 2737 2785 2832 ±2.49 2709 2785 2860 ±3.94
80 176 0.67 2924 2980 3035 ±2.8 2894 2980 3065 ±4.3
90 194 0.65 3118 3182 3246 ±3.12 3086 3182 3278 ±4.66
100 212 0.63 3318 3392 3466 ±3.46 3284 3392 3500 ±5.05
110 230 0.59 3523 3607 3691 ±3.93 3487 3607 3728 ±5.61
120 248 0.53 3722 3817 3912 ±4.7 3683 3817 3950 ±6.59
125 257 0.49 3815 3915 4016 ±5.26 3775 3915 4055 ±7.31
130 266 0.44 3901 4008 4114 ±6 3861 4008 4154 ±8.27
140 284 0.33 4049 4166 4283 ±8.45 4008 4166 4325 ±11.46
150 302 0.20 4153 4280 4407 ±14.63 4110 4280 4450 ±19.56
TEMP.
COEFF.
KTY81-210 KTY81-220
RESISTANCE
(Ω)
MIN. TYP. MAX. MIN. TYP. MAX.
TEMP.
ERROR
(K)
RESISTANCE
(Ω)
TEMP.
ERROR
(K)
1998 Mar 26 4
Philips Semiconductors Product specification
Silicon temperature sensors KTY81-2 series
Table 2 Ambient temperature, corresponding resistance, temperature coefficient and maximum expected temperature
error for KTY81-221 and KTY81-222
I
= 1 mA.
cont
AMBIENT
TEMPERATURE
(°C) (°F) (%/K)
−55 −67 0.99 941 970 999 ±3.02 960 990 1020 ±3.02
−50 −58 0.98 990 1019 1049 ±2.92 1010 1040 1070 ±2.92
−40 −40 0.96 1094 1123 1153 ±2.74 1116 1146 1176 ±2.74
−30 −22 0.93 1205 1235 1264 ±2.55 1230 1260 1290 ±2.55
−20 −4 0.91 1325 1354 1382 ±2.35 1352 1381 1410 ±2.35
−10 14 0.88 1452 1480 1508 ±2.14 1481 1510 1538 ±2.14
0 32 0.85 1587 1613 1640 ±1.91 1619 1646 1673 ±1.91
10 50 0.83 1730 1754 1779 ±1.67 1765 1790 1815 ±1.67
20 68 0.80 1882 1903 1924 ±1.41 1920 1941 1963 ±1.41
25 77 0.79 1960 1980 2000 ±1.27 2000 2020 2040 ±1.27
30 86 0.78 2037 2059 2081 ±1.39 2078 2100 2123 ±1.39
40 104 0.75 2195 2222 2250 ±1.64 2239 2267 2295 ±1.64
50 122 0.73 2360 2393 2426 ±1.91 2407 2441 2475 ±1.91
60 140 0.71 2531 2571 2611 ±2.19 2582 2623 2664 ±2.19
70 158 0.69 2710 2757 2804 ±2.49 2764 2812 2860 ±2.49
80 176 0.67 2895 2950 3005 ±2.8 2953 3009 3065 ±2.8
90 194 0.65 3086 3150 3214 ±3.12 3149 3214 3279 ±3.12
100 212 0.63 3285 3358 3431 ±3.46 3351 3426 3501 ±3.46
110 230 0.59 3488 3571 3655 ±3.93 3558 3643 3728 ±3.93
120 248 0.53 3684 3779 3873 ±4.7 3759 3855 3951 ±4.7
125 257 0.49 3776 3876 3976 ±5.26 3853 3955 4056 ±5.26
130 266 0.44 3862 3967 4073 ±6 3940 4048 4155 ±6
140 284 0.33 4009 4125 4241 ±8.45 4090 4208 4326 ±8.45
150 302 0.20 4112 4237 4363 ±14.63 4195 4323 4451 ±14.63
TEMP.
COEFF.
KTY81-221 KTY81-222
RESISTANCE
(Ω)
MIN. TYP. MAX. MIN. TYP. MAX.
TEMP.
ERROR
(K)
RESISTANCE
(Ω)
TEMP.
ERROR
(K)
1998 Mar 26 5
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