PRF21BE471QB2RA Murata, PRF21BE471QB2RA Datasheet - Page 70

• Manufacturer Part Number: PRF21BE471QB2RA
• Description: Thermistors - PTC 470 OHM 32V
• Manufacturer: Murata
• Type: PTCr
• Series: PRF21r

Specifications of PRF21BE471QB2RA

• Resistance: 470 Ohms
• Tolerance: 5 %
• Termination Style: SMD/SMT
• Operating Temperature Range: - 20 C to + 110 C
• Current Rating: 0.1 mAmp
• Dimensions: 1.25 mm W x 2 mm L
• Voltage: 140 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

11
!Note
This chip PTC Thermistor is a reflow soldering SMD type
for overheat sensing for power transistors, power
diodes and power ICs in hybrid circuits.
1. SMD type is helpful for miniaturizing circuits
2. Excellent thermal response due to small size
3. Solid-state construction provides excellent resistance
4. Contactless operation provides noiseless operation.
68
Chip Type 0603 (1608) Size
PRF18AS471QB5RB
PRF18AR471QB5RB
PRF18BA471QB5RB
PRF18BB471QB5RB
PRF18BC471QB5RB
PRF18BD471QB5RB
PRF18BE471QB5RB
PRF18BF471QB5RB
PRF18BG471QB5RB
This series is applied to flow/reflow soldering.
This series is recognized by UL.
Chip Type 0805 (2012) Size
PRF21AS471QB5RA
PRF21AR471QB5RA
PRF21BA471QB5RA
PRF21BB471QB5RA
PRF21BC471QB5RA
PRF21BD471QB5RA
PRF21BE471QB5RA
This series is applied to flow/reflow soldering.
This series is recognized by UL.
POSISTORr for Circuit Protection
Overheat Sensing Chip Type
Features
because of its small size and light weight.
to mechanical vibration and impact resistance.
• 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 review our product specifications or consult the approval sheet for product specifications before ordering.
Part Number
Part Number
Sensing Temperature
Sensing Temperature
(at 4.7k ohm)
(at 4.7k ohm)
145 5 C
135 5 C
125 5 C
115 5 C
105 5 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
95 5 C
85 5 C
( C)
( C)
Sensing Temperature
(at 47k ohm)
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
( C)
-
(V)
32
32
32
32
32
32
32
Maximum
Voltage
(V)
32
32
32
32
32
32
32
32
32
Resistance
470 50%
470 50%
470 50%
470 50%
470 50%
470 50%
470 50%
(at 25 C)
(ohm)
Resistance
Part Number
PRF18_RB
PRF21_RA
470 50%
470 50%
470 50%
470 50%
470 50%
470 50%
470 50%
470 50%
470 50%
(at 25 C)
(ohm)
e
1.6 0.15
2.0 0.2
L
g
L
Dimensions (mm)
0.8 0.15
1.25 0.2
Temperature Range
Temperature Range
W
e
-20 to 160
-20 to 150
-20 to 140
-20 to 130
-20 to 120
-20 to 110
-20 to 100
Operating
0.8 0.15
0.9 0.2
-20 to 160
-20 to 160
-20 to 150
-20 to 140
-20 to 130
-20 to 120
-20 to 110
-20 to 100
Operating
-20 to 90
T
( C)
( C)
W
0.1 to 0.6
0.2 min.
e
0.5 min.
g
-
Apr.25,2011
R90E.pdf