Document Number: 29064

For technical questions contact: nlr.europe@vishay.com

www.vishay.com

Revision: 08-May-03

1

NTC Thermistors, Glass Encapsulated Miniature Bead

2322 633 2....

Vishay BCc

QUICK REFERENCE DATA

Note

1. Response time in silicone oil MS200/50. This is the time needed

for the sensor to reach 63.2% of the total temperature difference

when subjected to a temperature change from 25 °C in air to

85 °C in oil.

PARAMETER

VALUE

Resistance value at 25 °C1 kΩ to 1 MΩ

Tolerance on R25-value

±5%; ±10%

B25/85-value

2075 to 4100 K

Tolerance on B25/85-value

±5%

Maximum dissipation at 55 °C

60 mW

Response time; note 1

≈6 s

Operating temperature range:

at zero dissipation

−55 to +200 °C

at maximum dissipation

0 to 55 °C

Dielectric withstanding voltage (RMS)

between terminals and glass envelope

min. 1500 V

Insulation resistance between

terminals and glass envelope at 100 V

(DC)

min. 100 MΩ

Mass

≈0.1 g

MARKING

The thermistors are marked with four coloured dots on the

glass envelope; see Component Outline drawing and

Electrical Data and Ordering Information table.

MOUNTING

By soldering in any position.

PACKAGING

The thermistors are packed in cardboard boxes; the smallest

packaging quantity is 100 units.

FEATURES

• Small diameter

• Quick response to changes in temperature

• Very high long term stability

• High temperature operation

• Resistant to agressive environments

APPLICATIONS

Temperature measurement.

Bead thermistor with negative temperature coefficient, in a

glass envelope with two tinned durnet (CuNiFe) wires. The

device is non-flammable.

ELECTRICAL DATA AND ORDERING INFORMATION

Note

3. The thermisters have a 12-digit catalog number starting with 2322 633 2. The subsequent 4 digits indicate the resistance value and tolerance.

(kΩ

Ω

Ω

Ω)

TC

(%/K)

CATALOG NUMBER

2322 633 2....

COLOUR CODE

(see Component outline Drawing and note 1)

±

±5%

±

±10%

I

II

III

1

2075 K ±5%

−2.3

3102

2102

brown

black

red

2.2

2285 K ±5%

−2.6

3222

2222

red

red

red

4.7

2485 K ±5%

−2.8

3472

2472

yellow

violet

red

10

3750 K ±5%

−4.2

3103

2103

brown

black

orange

22

3560 K ±5%

−4.0

3223

2223

red

red

orange

47

3750 K ±5%

−4.2

3473

2473

yellow

violet

orange

100

3900 K ±5%

−4.4

3104

2104

brown

black

yellow

220

3860 K ±5%

−4.3

3224

2224

red

red

yellow

470

3950 K ±5%

−4.5

3474

2474

yellow

violet

yellow

1000

4100 K ±5%

−4.6

3105

2105

brown

black

green