Characteristics according to din43760, Zni1000 – Diodes ZNI1000 User Manual

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ZNI1000

Issue 5 - June 2007

www.zetex.com

Characteristics according to DIN43760

Resistance at a given temperature

R(T) = R0 x (1 + A x T + B x T

+ C x T

+ D x T

)

Formula for temperature at a given resistance

coefficients:

A = -412.6

B = 140.41

C = 0.00764

D = -6.25 x 10

-17

E = -1.25 x 10

-24

Self heating

For accurate temperature measurement it's recommended to choose a small current in order to
avoid self heating of the resistor. The temperature failure caused by the measurement current can
be calculated with:

⌬T = P/EK

where P = I² * R is the heat power caused by the measurement current and EK is the self heating
coefficient.

The self heating coefficient for the Ni1000-SOT is:

EK = (1.7 ± 0.3) mW/K (Air: 23°C; no air flow).

Resistance at 0°C

6.650 x 10

-6

Temperature in °C

2.805 x 10

-11

5.485 x 10

-3

-2.000 x 10

-17

T R

( )