PRF21BB471QB5RA Murata, PRF21BB471QB5RA Datasheet - Page 23
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PRF21BB471QB5RA
Manufacturer Part Number
PRF21BB471QB5RA
Description
Thermistors - PTC 470 Ohm 50% 32volts
Manufacturer
Murata
Type
PTCr
Datasheet
1.PRF21BB471QB5RA.pdf
(100 pages)
Specifications of PRF21BB471QB5RA
Resistance
470 Ohms
Tolerance
50 %
Termination Style
SMD/SMT
Operating Temperature Range
- 20 C to + 130 C
Dimensions
1.25 mm W x 2 mm L x 0.9 mm H
Voltage
32 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PRF21BB471QB5RA
Manufacturer:
MURATA
Quantity:
240 000
!Note
No.
10 Humidity Test
11 Temperature Cycling
12
(*) The resistance measurement after the test.
Above mentioned soldering in "4. Adhesive Strength" and "5. Vibration" is done under the following conditions at our site.
1
2
3
4
5
6
7
8
9
PRG21BC Series
After leaving for 24 hours or more in 25 2 C, it measures by 4 wire measuring methods using the direct-current terminal current of 10mA or less (0.1 or
less Vdcs).
#Glass-Epoxy PC board
#Standard land dimension
#Standard solder paste
#Standard solder profile
Above conditions are mentioned in Notice.
Operating Temp.
Resistance Value (at 25 C)
Withstanding Voltage
Adhesive Strength
Vibration
Solderability
Solder-heatability
High Temperature Test
Low Temperature Test
High Temperature
Load Test
• 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.
Item
-10 to 60 C
The resistance value should be within the specified
tolerance.
Without damage
There is no sign of exfoliation on electrode.
Normal appearance
Resistance change: not to exceed 20% (*)
Min. 75% electrode is covered with new solder.
Resistance change: not to exceed 20% (*)
Normal appearance
Resistance change: not to exceed 20% (*)
Normal appearance
Resistance change: not to exceed 20% (*)
Rating Value
Chip Type Specifications and Test Methods
Temperature range with maximum voltage applied to PTC.
After leaving for 24 hrs. or more in 25 C, it measures by 4 wire
measuring methods using the direct-current terminal current of
10mA or less (0.1 or less Vdcs).
We apply 120% of the maximum operating voltage to PTC by
raising gradually for 180 5 secs. at 25 C. (A protective resistor
is to be connected in series, and the inrush current through
PTC must be limited below maximum rated value.)
EIAJ ET-7403 term 9
Soldered PTC to PCB and add a force of 5.0N in the direction
as shown below.
JIS C 5102 term 8.2
Vibrate for 2 hrs. in each of 3 mutually perpendicular planes for
a total of 6 hrs.
JIS C 5102 term 8.4
60 3 C leave for 1000 10 hrs.
-10 3 C leave for 1000 10 hrs.
60 2 C, 90-95%RH leave for 500 4 hrs.
JIS C 5102 term 9.3
Times: 5 cycles
60 3 C (in air), PTC is applied maximum operating voltage for
1.5 hrs. on and 0.5 hrs. off. This cycle is repeated for 500 10 hrs.
Soldered PTC to PCB
Vibration: A 10-55-10Hz (1 min.)
Width: 1.5mm
Solder: Sn 63%/Pb 37% (or 60/40%)
Solder temp: 230 5 C
Soaking time: 3 0.5 secs.
Soaking position: Until a whole electrode is soaked.
Solder: Sn 63%/Pb 37% (or 60/40%)
Flax: Solder paste containing less than 0.2wt% of chlorine.
Preheating: 150 5 C 3 mins.
Peak temp.: 260 5 C 10 5 secs. (reflow)
PCB: Glass Epoxy PCB (JIS C 6484)
Step
1
2
3
4
Room temp.
Room temp.
Temp. ( C)
+85 +3, -0
-20 +0, -3
Method of Examination
PTC
F
Time (min.)
10-15
10-15
30
30
Glass Epoxy PCB
F=5.0N
F
21
Apr.25,2011
R90E.pdf
1