Sensors
Temperature Sensors
NTC Thermistors
AXIAL LEAD GLASS-SEALED TYPE
FEATURES
• The NTCDS series features a glass-sealed construction
identical to that of DHDs (Double Heatsink Diodes). They are
thus highly reliable and resistant to high relative humidity.
• Tight tolerances are maintained in resistance vs. temperature
characteristics.
DIMENSION CODE 3018
ø0.45max.
ø1.8max.
NTCDS Series
• The application of semiconductor mass production techniques
has resulted in considerable size reduction and improved
consistency.
ELECTRICAL CHARACTERISTICS
Nominal
resistance [at 25°C]
∗
1
G
∗
2
502X
∗
3
C 5k
Ω
±X%
NTCDS30183E
NTCDS30183HG103XC
10k
Ω
±X%
NTCDS30183KG203XC
20k
Ω
±X%
NTCDS30183RG503XC
50k
Ω
±X%
NTCDS30183SG104XC
100k
Ω
±X%
NTCDS40203EG502XC
5k
Ω
±X%
NTCDS40203HG103XC
10k
Ω
±X%
NTCDS40203KG203XC
20k
Ω
±X%
NTCDS40203RG503XC
50k
Ω
±X%
NTCDS40203SG104XC
100k
Ω
±X%
Part No.
∗
1
Nominal
3+0, –0.7
26min.
26min.
DIMENSION CODE 4020
ø0.55max.
ø2max.
4+0, –0.4
Constant B
[at +25 to +85°C]
3250K±2%
3400K±2%
3500K±2%
3800K±2%
3850K±2%
3250K±2%
3400K±2%
3500K±2%
3800K±2%
3850K±2%
26min.
26min.
Dimensions in mm
constant B (Resistance temperature characteristics): This code
indicates the value of constant B using a combination of one numeric
character and one alphabetic character.
Constant B
(K)
3000
Alphabetic
code
E
H
K
R
S
Constant B
(K)
201 to 250
351 to 400
451 to 500
751 to 800
801 to 850
CHARACTERISTICS
Type
Operating temperature range
Heat dissipation constant
[in still air]
Thermal time constant
[in still air]
Insulation resistance
[between lead and glass]
NTCDS3018
–40 to +250°C
1mW/°C
10s max.
50M
Ω
min.
[DC.500V]
NTCDS4020
–40 to +250°C
2mW/°C
20s max.
50M
Ω
min.
[DC.500V]
Numeric
code
3
∗
2
Tolerance
∗
3
Nominal
of nominal constant B: ±2%(G)
resistance tolerance X: Select either ±2%(G), ±3%(H), ±5%(J),
or ±10%(K).
Temperature coefficient
The relationship between temperature coefficient
α
and constant B can be
expressed as follows:
B
α
= –
—
×
100(%/°C)
T
2
Example: The temperature coefficient at 20°C with B=3400K can be
calculated at –4%/°C.
B223_NTCDS
980525
Specifications which provide more details for the proper and safe use of the described product are available upon request.
All specifications are subject to change without notice.
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