• 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
sales representatives or product engineers before ordering.
• 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.
R90E.pdf
07.3.19
POSISTORr
for Circuit Protection
Murata
Manufacturing Co., Ltd.
Cat.No.R90E-9
!Note
• This PDF catalog is downloadedand
!CAUTION
(forMurata 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
!Note
• Please read rating from the website of storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
sales representatives or product engineers before ordering.
• 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.
• 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.
R90E.pdf
07.3.19
CONTENTS
Part Numbering
Basic Characteristics of POSISTORr
Selection Guide
Application Matrix
Application Notes
1
POSISTORr and "POSISTOR" in this catalog are
the trademarks of Murata Manufacturing Co., Ltd.
1
2
4
6
7
8
12
17
19
22
27
30
37
43
50
58
60
61
62
63
64
66
67
68
69
70
74
75
79
80
Recycled Paper
2
3
4
For Overcurrent Protection Chip Type
Chip Type Specifications and Test Methods
5
2
3
4
5
6
7
8
For Overcurrent Protection Narrow Current Band 30V Series
For Overcurrent Protection Narrow Current Band 51/60V Series
For Overcurrent Protection Narrow Current Band 140V Series
For Overcurrent Protection 24/30/32V Series
For Overcurrent Protection 56/80V Series
For Overcurrent Protection 125/140V Series
For Overcurrent Protection 250/265V Series
6
7
8
PTGL Series Narrow Current Band Specifications and Test Methods
PTGL Series Specifications and Test Methods
9
10
For Overheat Sensing Chip Type
For Overheat Sensing Chip Type Tight-tolerance Type
9
10
For Overheat Sensing Chip Type (Reference Data)
Chip Type (Ref. Only)
Chip Tight Tolerance Type (Ref. Only)
Chip Type Specifications and Test Methods (PRF15 Series)
Chip Type Specifications and Test Methods (PRF18/21 Series)
Chip Tight Tolerance Type Specifications and Test Methods
11
For Overheat Sensing Lead Type
For Temperature Sensor Lead Type Specifications and Test Methods
11
!Caution/Notice
PRG/PRF Series Package
Lead Type PTGL Series Package
!Note
• This PDF catalog is downloadedand
!CAUTION
(forMurata 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
!Note
• Please read rating from the website of storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
sales representatives or product engineers before ordering.
• 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.
• 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.
R90E.pdf
07.3.19
o
Part Numbering
PTC Thermistors (POSISTORr) for Circuit Protection
(Part Number)
qProduct
ID
Product ID
PR
wSeries
Code
G
eDimensions
(LgW)
Code
18
21
rTemperature
Characteristics
Code
BB
BC
Temperature Characteristics
Curie Point 100°C
Curie Point 90°C
iPackaging
Code
RA
RB
RK
Packaging
Embossed Taping (4mm Pitch) (4000 pcs.)
Paper Taping (4mm Pitch) (4000 pcs.)
Embossed Taping (4mm Pitch) (3000 pcs.)
Dimensions (LgW)
1.60g0.80mm
2.00g1.25mm
Series
for Overcurrent Protection
PTC Thermistors Chip Type
PR
q
G
18
BB
r
470
t
M
y
B1
u
RB
i
tResistance
Expressed by three-digit alphanumerics. The unit is ohm (Ω). The
first and second figures are significant digits, and the third figure
expresses the number of zeros which follow the two figures. If
there is a decimal point, it is expressed by the capital letter "R". In
this case, all figures are significant digits.
Ex.)
Code
470
471
yResistance
Tolerance
Code
M
Q
uIndividual
Specifications
Code
B1
Individual Specifications
Structure, others
Resistance Tolerance
±20%
Special Tolerance
Resistance
47Ω
470Ω
w e
PTC Thermistors (POSISTORr) for Overheat Sensing Chip Type
(Part Number)
qProduct
ID
Product ID
PR
wSeries
Code
F
eDimensions
(LgW)
Code
15
18
21
rTemperature
Characteristics
Code
AR
AS
BA
BB
BC
BD
BE
BF
BG
Temperature Characteristics
Curie Point 120°C
Curie Point 130°C
Curie Point 110°C
Curie Point 100°C
Curie Point 90°C
Curie Point 80°C
Curie Point 70°C
Curie Point 60°C
Curie Point 50°C
iPackaging
Code
RA
RB
RC
Packaging
Embossed Taping (4mm Pitch) (4000 pcs.)
Paper Taping (4mm Pitch) (4000 pcs.)
Paper Taping (2mm Pitch) (10000 pcs.)
Dimensions (LgW)
1.00g0.50mm
1.60g0.80mm
2.00g1.25mm
uIndividual
Specifications
Code
B1
Individual Specifications
Structure, others
Series
for Overheat Sensing
yResistance
Tolerance
Code
Q
R
Resistance Tolerance Sensing Temp. Tolerance
Special Tolerance
Special Tolerance
±5°C
±3°C
PTC Thermistors Chip Type
PR
q
F
18
BB
r
471
t
Q
y
B1
u
RB
i
tResistance
Expressed by three figures. The unit is ohm (Ω). The first and
second figures are significant digits, and the third figure
expresses the number of zeros which follow the two figures.
Ex.)
Code
471
Resistance
470Ω
w e
2
!Note
• This PDF catalog is downloadedand
!CAUTION
(forMurata 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
!Note
• Please read rating from the website of storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
sales representatives or product engineers before ordering.
• 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.
• 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.
R90E.pdf
07.3.19
PTC Thermistors (POSISTORr) for Circuit Protection / for Overheat Sensing Lead Type
(Part Number)
qProduct
ID
Product ID
PT
wSeries
Code
FL
FM
GL
eDimensions
Code
04
05
07
09
10
12
13
14
16
18
Dimensions
Nominal Body Diameter 4mm Series
Nominal Body Diameter 5mm Series
Nominal Body Diameter 7mm Series
Nominal Body Diameter 9mm Series
Nominal Body Diameter 10mm Series
Nominal Body Diameter 12mm Series
Nominal Body Diameter 13mm Series
Nominal Body Diameter 14mm Series
Nominal Body Diameter 16mm Series
Nominal Body Diameter 18mm Series
iPackaging
rTemperature
Characteristics
Code
AS
AR
BA
BB
BC
BD
BE
BF
BG
BH
Temperature Characteristics
Curie Point 130°C
Curie Point 120°C
Curie Point 110°C
Curie Point 100°C
Curie Point 90°C
Curie Point 80°C
Curie Point 70°C
Curie Point 60°C
Curie Point 50°C
Curie Point 40°C
Code
A0
B0
Packaging
Ammo Pack
Bulk
uIndividual
Specifications
Code
3P51
Individual Specifications
Lead Type, others
Series
for Overheat Sensing Lead Type
for Overheat Sensing with Lug-terminal
for Circuit Protection Lead Type
PTC Thermistors
PT
q
GL
w
07
e
AR
r
220
t
M
y
3P51 A0
u
i
tResistance
Expressed by three-digit alphanumerics. The unit is ohm (Ω). The
first and second figures are significant digits, and the third figure
expresses the number of zeros which follow the two figures. If
there is a decimal point, it is expressed by the capital letter "R". In
this case, all figures are significant digits.
Ex.)
Code
R22
2R2
220
yResistance
Tolerance
Code
H
K
M
N
Q
Resistance Tolerance
±25%
±10%
±20%
±30%
Special Tolerance
Resistance
0.22Ω
2.2Ω
22Ω
3
!Note
• This PDF catalog is downloadedand
!CAUTION
(forMurata 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
!Note
• Please read rating from the website of storage, operating, rating, soldering, mounting and handling) in this catalog to prevent smoking and/or burning, etc.
sales representatives or product engineers before ordering.
• 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.
• 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.
R90E.pdf
07.3.19
Basic Characteristics of POSISTORr
!Basic
Characteristics
POSISTORr has three main characteristics.
1. Resistance - Temperature Characteristics
Although there is a negligible difference between the
normal and "Curie Point" temperature, POSISTORr
shows almost constant resistance-temperature
characteristics. Yet they have resistance-temperature
characteristics that cause resistance to sharply increase
when the temperature exceeds the Curie Point.
The Curie Point (C.P.) is defined as temperature which
the resistance value is twice the one at 25
°C.
Resistance-Temperature Characteristic
10
Resistance Change Ratio, R/R25˚C
5
10
4
BD BC BB AR
10
3
10
2
10
1
0
50
150
200
C.P. (AR: 120°C)
Temperature (˚C)
100
2. Current - Voltage Characteristics (Static Characteristic)
This shows the relation between applied voltage when
voltage applied to POSISTORr causes balancing of
inner heating and outer thermal dissipation and stabilized
current. This has both a maximum point of current and
中风发生时，一切都是以秒来计算的。延误治疗可能导致大脑重大损伤。伦敦大学医学院的一位博士Alistair McEwan已经获得行为医学研究所(Action Medical Research)的同意，为急救人员开发一种无线诊断系统来减少时间延误。感谢抗血栓药物，一些病人在病情发作的三个小时之内可以完全恢复。但出血也会导致中风。医生在治疗之前需要确定发病原因，因为不适当的服用抗血栓药物会加重损害。...[详细]
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