T, M, C

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Vishay Dale

Revision: 08-Apr-2021

3

Document Number: 33003

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TOLERANCES AVAILABLE FOR TYPE T, M, AND C THERMISTORS

DESCRIPTION OF THERMISTOR TOLERANCES

The many applications of thermistors have mandated the need for two basic tolerance schemes for these products - curve

tracking and point match thermistors. An example of the resistance tolerance at various temperatures for the two different

tolerancing methods is described in the following graph:

Fig. 1

CURVE TRACKING TOLERANCE

Thermistors are calibrated at the high temperature of the curve track range and then final tested at the low temperature of

the curve track range. This ensures that the thermistor will meet the specified temperature accuracy at every temperature

within

the desired temperature range. Several temperature ranges are available and the accuracy of the thermistor may be

± 0.2 °C, ± 0.5 °C, and ± 1.0 °C. The curve tracking temperature ranges and their code designators are shown in figure 1 and

“Standard Electrical Specifications for Curve Tracking Thermistors” table.

To specify, add the appropriate suffix from the following table to the part number.

Example: 01M1002SFB3 = curve 1, 10 k

Ω at +25 °C, curve tracking to ± 0.5 °C from 0 °C to +70 °C

STANDARD ELECTRICAL SPECIFICATIONS FOR CURVE TRACKING THERMISTORS

TEMPERATURE

RANGE FOR

SPECIFIED

ACCURACY

0 °C to +70 °C

0 °C to +100 °C

25 °C to +90 °C

0 °C to +50 °C

ACCURACY

± 1 °C

± 0.5 °C

± 0.2 °C

± 1 °C

± 0.5 °C

± 1 °C

± 0.5 °C

± 0.2 °C

± 1 °C

± 0.5 °C

± 0.2 °C

PART NO. SUFFIX

- A3

- B3

- C3

- A4

- B4

- A5

- B5

- C5

- A8

- B8

- C8

01

XXX

XX

XXX

XX

X

08

XXX

XX

XXX

XX

X

09

XXX

XX

XXX

XX

X

TEMPERATURE (°C)

± 5 % POINT MATCH CURVE

± 1 °C CURVE TRACK CURVE

25 °C

10

9

8

7

6

5

4

3

2

1

0

A5

A4

A8

A3