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参数资料
型号： PRF21BE471QB5RA
厂商： Murata Electronics North America
文件页数： 73/105页
文件大小： 0K
描述： THERMISTOR
标准包装： 4,000
系列： PRF18/21
在 25°C 时的电阻（欧姆）： 470
电阻公差： ±50%
工作温度： -20°C ~ 100°C
安装类型： PCB，表面贴装
封装/外壳： 芯片
供应商设备封装： *
包装： *

! 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 speci?cations. Therefore, please approve our product speci?cations or transact the approval sheet for product speci?cations before ordering.
POSISTOR r for Circuit Protection
Overheat Sensing Chip Type
R90E.pdf
Mar.4,2014
This chip PTC Thermistor is a re?ow 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
e
g
L
e
W
because of its small size and light weight.
2. Excellent thermal response due to small size
Part Number
Dimensions (mm)
L W T e g
3. Solid-state construction provides excellent resistance
to mechanical vibration and impact resistance.
4. Contactless operation provides noiseless operation.
Chip Type 0603 (1608) Size
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.
Sensing Temperature
Sensing Temperature
Maximum
Resistance
Operating
Part Number
PRF18AS471QB5RB
PRF18AR471QB5RB
PRF18BA471QB5RB
PRF18BB471QB5RB
PRF18BC471QB5RB
PRF18BD471QB5RB
PRF18BE471QB5RB
PRF18BF471QB5RB
PRF18BG471QB5RB
(at 4.7k ohm)
(°C)
145 ±5°C
135 ±5°C
125 ±5°C
115 ±5°C
105 ±5°C
95 ±5°C
85 ±5°C
75 ±5°C
65 ±5°C
(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
Voltage
(V)
32
32
32
32
32
32
32
32
32
(at 25°C)
(ohm)
470 ±50%
470 ±50%
470 ±50%
470 ±50%
470 ±50%
470 ±50%
470 ±50%
470 ±50%
470 ±50%
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
This series is applied to ?ow/re?ow soldering.
This series is recognized by UL.
Chip Type 0805 (2012) Size
Sensing Temperature
Maximum
Resistance
Operating
Part Number
PRF21AS471QB5RA
PRF21AR471QB5RA
PRF21BA471QB5RA
PRF21BB471QB5RA
PRF21BC471QB5RA
PRF21BD471QB5RA
(at 4.7k ohm)
(°C)
145 ±5°C
135 ±5°C
125 ±5°C
115 ±5°C
105 ±5°C
95 ±5°C
Voltage
(V)
32
32
32
32
32
32
(at 25°C)
(ohm)
470 ±50%
470 ±50%
470 ±50%
470 ±50%
470 ±50%
470 ±50%
Temperature Range
(°C)
-20 to 160
-20 to 150
-20 to 140
-20 to 130
-20 to 120
-20 to 110
PRF21BE471QB5RA
85 ±5°C
32
470 ±50%
-20 to 100
13
This series is applied to ?ow/re?ow soldering.
This series is recognized by UL.
71
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