KTY81_SER_5

© NXP B.V. 2008. All rights reserved.

Product data sheet

Rev. 05 — 25 April 2008

3 of 15

NXP Semiconductors

KTY81 series

Silicon temperature sensors

5.

Limiting values

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 5.

Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134).

Symbol

Parameter

Conditions

Min

Max

Unit

continuous sensor current

-

10

mA

2

mA

ambient temperature

−55

+150

°C

Table 6.

Characteristics

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

sensor resistance

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

KTY81/210

1980

-

2020

Ω

KTY81/220

1960

-

2040

Ω

KTY81/221

1960

-

2000

Ω

KTY81/222

2000

-

2040

Ω

KTY81/250

1900

-

2100

Ω

TC

temperature coefficient

-

0.79

-

%/K

resistance ratio

1.676

1.696

1.716

resistance ratio

0.480

0.490

0.500

drift of sensor resistance at

25

°C

10000 h continuous

KTY81/1 series

-

1.6

-

Ω

KTY81/2 series

-

3.2

-

Ω

thermal time constant

in still air

[1] -30

-

s

in still liquid

[1] -5

-s

in flowing liquid

[1] -3

-s