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
C
1 k
to 1 M
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 M
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
1. Dependent upon R
25
-tolerance, the dot IV is coloured as follows:
a) for R
25
5%, dot IV is coloured gold;
b) for R
25
10%, dot IV is coloured silver.
2. R
25
-values, temperature coefficients, catalog numbers and coding.
3. The thermisters have a 12-digit catalog number starting with 2322 633 2. The subsequent 4 digits indicate the resistance value and tolerance.
R
25
(k
)
B
25/85
-VALUE
TC
(%/K)
CATALOG NUMBER
2322 633 2....
COLOUR CODE
(see Component outline Drawing and note 1)
R
25
5%
R
25
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
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