NCP18XM221E03RB Murata, NCP18XM221E03RB Datasheet - Page 8
![Thermistors - NTC 220 OHM](/photos/16/24/162463/nthcp03_sml.jpg)
NCP18XM221E03RB
Manufacturer Part Number
NCP18XM221E03RB
Description
Thermistors - NTC 220 OHM
Manufacturer
Murata
Type
NTCr
Series
NCPr
Datasheet
1.NCP15WF104J03RC.pdf
(47 pages)
Specifications of NCP18XM221E03RB
Resistance
220 Ohms
Tolerance
3 %
Termination Style
SMD/SMT
Operating Temperature Range
- 40 C to + 125 C
Lead Spacing
0.6 mm
Power Rating
100 mW
Package / Case
0603
Current Rating
2.1 mAmps
Dimensions
0.8 mm W x 1.6 mm L x 0.8 mm H
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
NCP18XM221E03RB
Manufacturer:
MURATA
Quantity:
240 000
!Note
• This PDF catalog is downloaded from the website of Murata Manufacturing co., ltd. Therefore, it’s specifications are subject to change or our products in it may be discontinued without advance notice. Please check with our
• This PDF catalog has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.
sales representatives or product engineers before ordering.
!Note
!Basic Characteristics
1. Zero-power Resistance of Thermistor: R
2. B-Constant
3. Thermal Dissipation Constant
4. Thermal Time Constant
!Performance
Please inquire about test conditions and ratings.
6
Resistance
B-Constant
Thermal Dissipation
Constant
Rated Electric Power
Permissive Operating Current
R=R
R: Resistance in ambient temperature T (K)
(K: absolute temperature)
R
B: B-Constant of Thermistor
as (1) formula
B=Rn (R/R
When electric power P (mW) is spent in ambient
temperature T
there is a formula as follows
P=C (T
C: Thermal dissipation constant (mW/ C)
Thermal dissipation constant is varied with dimensions,
measurement conditions, etc.
Period in which Thermistor's temperature will change
63.2% of its temperature difference from ambient
temperature T
0
• Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
• This catalog has only typical specifications because there is no space for detailed specifications. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.
: Resistance in ambient temperature T
0
expB (1/T-1/T
2
-T
Item
1
) ..................(3)
0
) / (1/T-1/T
1
0
and thermistor temperature rises T
( C) to T
0
) ..............(1)
0
)
1
( C).
Measured by zero-power in specified ambient temperature.
Calculated between two specified ambient temperatures by next formula.
T and T
Shows necessary electric power that Thermistor's temperature rises 1˚C by self heating.
It is calculated by next formula (mW/˚C).
Shows the required electric power that causes Thermistor's temperature to rise to a specified temperature by self heating,
at ambient temperature of 25 C.
It is possible to keep Thermistor's temperature rising max. 1˚C.
............(2)
B =
C =
0
Rn (R/R
1/TY1/T
is absolute temperature (K).
TYT
P
0
0
0
0
)
(K)
2
,
Resistance vs. Temperature
Thermal Time Constant
Condition
T
T
1
0
10
10
10
10
1
2
1
1
2
20
X
0
20
Temperature (˚C)
Basic Characteristics
Time
40
60
63.2%
80
100
120
B=3450
B=3900
B=4100
R44E.pdf
11.2.21