VISHAY 2322 640 5. Technical data
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2322 640 5....
Vishay BCcomponents
NTC Thermistors, Accuracy Line
FEATURES
• Accurate over a wide temperature range (tolerance on
B-value between 2.5% and 0.5%)
• Good stability over a long life
• Excellent price/performance ratio
• Flexible leads
• Low heat conductivity through 0.4 mm diameter Ni-leads
APPLICATIONS
QUICK REFERENCE DATA
PARAMETER VALUE
Resistance value at 25
Tolerance on R
Tolerance on B
Maximum dissipation 100 mW
Dissipation factor
Response time; note 1
Thermal time constant
Operating temperature range at:
zero dissipation (continuously)
zero dissipation (for short
maximum dissipation (100 mW) 0 to +55
Climatic category 40/125/56
Mass
Notes
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.
2. Valid for all types with the exception of 2322 640 5.474.
° C 2 to 470 k Ω
-value
25
-value
25/85
δ
τ
± 5%; ± 3%; ± 2%; ± 1%
± 2.5 to 0.5%
2.2 mW/K
≈ 1.7 s
13 s
− 40 to +125 ° C
≤ 150 ° C
° C
≈ 0.11 g
° C in air to
• Temperature sensing and control.
These thermistors have a negative temperature coefficient.
The device consists of a chip with two tinned nickel leads and
is colour coded.
PACKAGING
The thermistors are packed in cardboard boxes; the smallest
packing quantity is 500 units.
MARKING
The thermistors are marked with coloured bands; see
Dimentions and “Electrical data and ordering information”
MOUNTING
By soldering in any position.
ELECTRICAL DATA AND ORDERING INFORMATION
R
25
(k Ω )
2 3528 K
2.7 3977 K
4.7 3977 K
5 3977 K
10 3977 K
12 3740 K
22 3740 K
47 4090 K
68 4190 K
100 4190 K
470 4570 K
Notes
1. Extended range available on request.
2. Thermistors have a 12-digit catalog number starting with 2322 640 5; the next digit indicates the tolerance and the last 3 digits indicate the
resistance value.
www.vishay.com For technical questions contact: nlr.europe@vishay.com
64 Revision: 15-Jun-04
B
-VALUE
25/85
± 0.5% 3202 6202 4202 5202 orange orange
± 0.75% 3272 6272 4272 5272 red red
± 0.75% 3472 6472 4472 5472 green green
± 0.75% 3502 6502 4502 5502 black white
± 0.75% 3103 6103 4103 5103 blue blue
± 2% 3123 6123 4123
± 2% 3223 6223 4223
± 1.5% 3473 6473 4473
± 1.5% 3683 6683 4683
± 1.5% 3104 6104 4104 5104 brown brown
± 1.5% 3474 6474 4474
R
25
CATALOG NUMBER 2322 640 5.... CODING (see dimensions)
± 5% R
± 3% R
25
± 2% R
25
± 1% I II
25
−
−
−
−
−
yellow yellow
white white
black black
grey grey
violet violet
Document Number: 29048
2322 640 5....
NTC Thermistors, Accuracy Line
DIMENSIONS in millimeters
3.4 max.
6.0 max
2 ± 1.0
2.54
40
±1.5
I
II
LONG TERM STABILITY OF R25 AS A
FUNCTION OF TEST DURATION AT
MAXIMUM TEMPERATURE (150 °C).
0.4
∆R
25
R
25
(%)
0.2
3
max.
I
II
± 0.04
Curves valid for 2.2 to 10 kΩ.
Curve 1: maximum deviation.
1
Curve 2: average deviation.
Curve 3: minimum deviation.
2
Vishay BCcomponents
DERATING AND LONG TERM STABILITY
P
(%)
100
0
LONG TERM STABILITY OF T AS A
FUNCTION OF TEST DURATION AT
MAXIMUM TEMPERATURE (150 °C).
0.05
∆T
(K)
0
05540 85 125
o
T ( C)
amb
Power derating curve.
Curves valid for 2.2 to 10 kΩ.
Curve 1: minimum deviation.
Curve 2: average deviation.
1
Curve 3: maximum deviation.
2
0.05
0.1
3
2
10
3
10
test duration (h)
AT 2 K Ω
25
R
25
4
10
2322 640 .....; see note 1
5.202
0.2
0
2
10
3
10
test duration (h)
3
4
10
RESISTANCE VALUES AT INTERMEDIATE TEMPERATURES WITH R
T
(
oper
° C)
/R
R
T
25
− 40 23.3402 1.65
− 35 17.3347 1.49
− 30 13.0166 1.34
− 25 9.8764 1.19
− 20 7.5682 1.05
− 15 5.8541 0.92
− 10 4.5688 0.79
− 5 3.5961 0.66
0 2.8533 0.54
5 2.2815 0.43
10 1.8376 0.31
15 1.4904 0.21
20 1.2169 0.10
25 1.0000 0.00
30 0.8266 0.10
35 0.6873 0.19
40 0.5746 0.28
45 0.4827 0.37
∆ R DUE TO
B-TOLERANCE
(%)
TC
(%/K)
− 6.06 46684
− 5.84 34672
− 5.62 26035
− 5.42 19754
− 5.23 15138
− 5.05 11709
− 4.87 9138
− 4.71 7193
− 4.55 5707
− 4.40 4563
− 4.26 3675
− 4.12 2981
− 3.99 2434
− 3.87 2000
− 3.75 1653
− 3.63 1375
− 3.53 1149
− 3.42 965.0
Document Number: 29048 For technical questions contact: nlr.europe@vishay.com
www.vishay.com
Revision: 15-Jun-04 65
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