PRF18BA471QB5RB Datasheet, PDF (15/104 Pages) Murata Manufacturing Co., Ltd. – POSISTOR for Circuit Protection

!Note • 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. Therefore, please approve our product specifications or transact the approval sheet for product specifications before ordering.
POSISTORr for Circuit Protection
Overcurrent Protection Chip Type
R90E.pdf
Sep.24,2012
1
Overcurrent Protection device with resettable function
suitable for current limiting resistor.
This product is a chip type PTC thermistor for
overcurrent protection that is suitable for the
following.
· Countermeasure for short circuit testing
· Current limiting resistor
c Features
1. Rapid operation to protect the circuit in an
overcurrent condition abnormality such as a
short circuit.
By removing the overcurrent condition, these
products automatically return to the initial
condition and can be used repeatedly.
2. Suitable for countermeasure to short circuit test
in safety standard.
3. Stable resistance after operation due to ceramic
PTC.
4. Similar size (0603 size) is possible due to the
large capacity for electric power.
5. Possible to use these products as current
limiting resistors with overcurrent protection
functions
6. The SMD type's small size and light weight are
helpful in miniaturizing the circuit.
Chip Type 0603(1608) Size
Part Number
PRG18BB471MB1RB
Max.
Voltage
(V)
24
Hold Current
(at +60°C)
(mA)
7
Hold Current
(at +25°C)
(mA)
10
PRG18BB221MB1RB
24
10
14
PRG18BB101MB1RB
24
15
21
PRG18BB470MB1RB
24
20
29
PRG18BB330MB1RB
24
25
36
PRG18BC6R8MM1RB
20
80
120
PRG18BC4R7MM1RB
20
100
155
PRG18BC3R3MM1RB
16
120
180
PRG18BC2R2MM1RB
12
150
220
PRG18BC1R0MM1RB
6
220
330
Maximum Current shows typical capacities of the transformer which can be used.
This series is applied to reflow soldering.
This series is recognized by UL.
Trip Current
(at +25°C)
(mA)
21
29
45
61
71
260
330
400
500
740
e
g
e
L
W
Part Number
Dimensions (mm)
LWT e g
PRG18_RB 1.6±0.15 0.8±0.15 0.8±0.15 0.1 to 0.6 -
PRG21_RA 2.0±0.2 1.25±0.2 0.9±0.2 0.2 min. 0.5 min.
PRG21_RK 2.0±0.2 1.25±0.2 1.25±0.2 0.2 min. 0.5 min.
Trip Current
(at -10°C)
(mA)
25
35
55
75
85
320
400
480
600
850
Max.
Current
(mA)
60
130
300
630
900
3500
5000
6000
6500
7500
Resistance
(at +25°C)
(ohm)
470 ±20%
220 ±20%
100 ±20%
47 ±20%
33 ±20%
6.8 ±20%
4.7 ±20%
3.3 ±20%
2.2 ±20%
1.0 ±20%
13