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Document Number: 29064
Revision: 08-May-03
For technical questions contact: nlr.europe@vishay.com
www.vishay.com
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
85
°
C in oil.
°
C in air to
PARAMETER
Resistance value at 25
Tolerance on R25-value
B25/85-value
Tolerance on B25/85-value
Maximum dissipation at 55
Response time; note 1
Operating temperature range:
at zero dissipation
at maximum dissipation
Dielectric withstanding voltage (RMS)
between terminals and glass envelope
Insulation resistance between
terminals and glass envelope at 100 V
(DC)
Mass
VALUE
1 k
to 1 M
±
5%;
2075 to 4100 K
±
5%
60 mW
≈
6 s
°
C
±
10%
°
C
55 to +200
0 to 55
min. 1500 V
°
C
°
C
min. 100 M
≈
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
a) for R
25
b) for R
25
R
25
-values, temperature coefficients, catalog numbers and coding.
The thermisters have a 12-digit catalog number starting with 2322 633 2. The subsequent 4 digits indicate the resistance value and tolerance.
25
-tolerance, the dot IV is coloured as follows:
5%, dot IV is coloured gold;
±
10%, dot IV is coloured silver.
±
2.
3.
R
(k
25
)
B
25/85
-VALUE
TC
(%/K)
CATALOG NUMBER
2322 633 2....
±
5%
3102
3222
3472
3103
3223
3473
3104
3224
3474
3105
COLOUR CODE
(see Component outline Drawing and note 1)
I
II
brown
black
red
red
yellow
violet
brown
black
red
red
yellow
violet
brown
black
red
red
yellow
violet
brown
black
R
25
R
25
2102
2222
2472
2103
2223
2473
2104
2224
2474
2105
±
10%
III
red
red
red
1
2075 K
2285 K
2485 K
3750 K
3560 K
3750 K
3900 K
3860 K
3950 K
4100 K
±
±
±
±
±
±
±
±
±
±
5%
5%
5%
5%
5%
5%
5%
5%
5%
5%
2.3
2.6
2.8
4.2
4.0
4.2
4.4
4.3
4.5
4.6
2.2
4.7
10
22
47
100
220
470
1000
orange
orange
orange
yellow
yellow
yellow
green