PRF18BA471QB5RB Datasheet, PDF (73/104 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
Overheat Sensing Chip Type
R90E.pdf
Sep.24,2012
This chip PTC Thermistor is a reflow soldering SMD type
for overheat sensing for power transistors, power
diodes and power ICs in hybrid circuits.
c Features
1. SMD type is helpful for miniaturizing circuits
because of its small size and light weight.
2. Excellent thermal response due to small size
3. Solid-state construction provides excellent resistance
to mechanical vibration and impact resistance.
4. Contactless operation provides noiseless operation.
e
g
e
L
W
Part Number
Dimensions (mm)
LWT e g
PRF18_RB 1.6±0.15 0.8±0.15 0.8±0.15 0.1 to 0.6 -
PRF21_RA 2.0±0.2 1.25±0.2 0.9±0.2 0.2 min. 0.5 min.
Chip Type 0603 (1608) Size
Part Number
PRF18AS471QB5RB
Sensing Temperature
(at 4.7k ohm)
(°C)
145 ±5°C
PRF18AR471QB5RB
135 ±5°C
PRF18BA471QB5RB
125 ±5°C
PRF18BB471QB5RB
115 ±5°C
PRF18BC471QB5RB
105 ±5°C
PRF18BD471QB5RB
95 ±5°C
PRF18BE471QB5RB
85 ±5°C
PRF18BF471QB5RB
75 ±5°C
PRF18BG471QB5RB
65 ±5°C
This series is applied to flow/reflow soldering.
This series is recognized by UL.
Sensing Temperature
(at 47k ohm)
(°C)
-
150 ±7°C
140 ±7°C
130 ±7°C
120 ±7°C
110 ±7°C
100 ±7°C
90 ±7°C
80 ±7°C
Maximum
Voltage
(V)
32
32
32
32
32
32
32
32
32
Resistance
(at 25°C)
(ohm)
470 ±50%
470 ±50%
470 ±50%
470 ±50%
470 ±50%
470 ±50%
470 ±50%
470 ±50%
470 ±50%
Operating
Temperature Range
(°C)
-20 to 160
-20 to 160
-20 to 150
-20 to 140
-20 to 130
-20 to 120
-20 to 110
-20 to 100
-20 to 90
Chip Type 0805 (2012) Size
Part Number
PRF21AS471QB5RA
Sensing Temperature
(at 4.7k ohm)
(°C)
145 ±5°C
PRF21AR471QB5RA
135 ±5°C
PRF21BA471QB5RA
125 ±5°C
PRF21BB471QB5RA
115 ±5°C
PRF21BC471QB5RA
105 ±5°C
PRF21BD471QB5RA
95 ±5°C
PRF21BE471QB5RA
85 ±5°C
This series is applied to flow/reflow soldering.
This series is recognized by UL.
Maximum
Voltage
(V)
32
32
32
32
32
32
32
Resistance
(at 25°C)
(ohm)
470 ±50%
470 ±50%
470 ±50%
470 ±50%
470 ±50%
470 ±50%
470 ±50%
Operating
Temperature Range
(°C)
-20 to 160
-20 to 150
-20 to 140
-20 to 130
-20 to 120
-20 to 110
-20 to 100
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