2322 640 10...

Vishay BCcomponents

NTC Thermistors, Special Accuracy



Document Number: 29046 For technical questions contact: nlr.europe@vishay.com www.vishay.com
Revision: 10-Oct-03 89

FEATURES

•

Excellent accuracy between 25

°

C and 85

°

C

•

High stability over a long life.

APPLICATIONS

•

Temperature sensing and control.

DESCRIPTION

These thermistors have a negative temperature coefficient.
The device consists of a chip with two tin-plated copper
leads. It is grey lacquered and not insulated. These
thermistors are very accurate (±0.5 °C) over a trajectory
from 25

°

C to 85

°

C.

PACKAGING

The thermistors are packed in cardboard boxes, each box
contains 500 units.

QUICK REFERENCE DATA

Notes

1. For values of nominal resistance value and tolerance at
intermediate temperatures; see resistance values tables.
2. Response time in silicone oil MS 200/50. 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 at 25

°

C; note 1 4.7 to 100 k

Ω

Temperature measurement accuracy
(between 25

°

C and 85

°

C)

±

0.5

°

C
Climatic category 40/125/56
Maximum dissipation 250 mW
Dissipation factor

δ

(for information only) 7 mW/K
Response time (for information only); note 2 1.2 s
Thermal time constant

τ

(for information only) 11 s
Operating temperature range:
at zero dissipation (continuously)

−

40 to +125

°

C
at maximum dissipation 0 to +55

°

C
Mass

≈

0.22 g

ELECTRICAL DATA AND ORDERING INFORMATION

R

25

(ohms)
dR

25

/R

25

(%)
R

85

(ohms)
dR

85

/R

85

(%)
B

25

/

85

(K)
dB/B
(%)
CATALOG NUMBER
2322 640 .....

4700 2.19 503.1 1.58 3977 0.75 10472
10000 2.19 1070 1.58 3977 0.75 10103
47000 2.23 4721 1.64 4090 1.5 10473
100000 2.29 9496 1.72 4190 1.5 10104

MARKING

Grey lacquered body.

MOUNTING

By soldering in any position.