PRF21BB471QB5RA Murata, PRF21BB471QB5RA Datasheet - Page 78

• Manufacturer Part Number: PRF21BB471QB5RA
• Description: Thermistors - PTC 470 Ohm 50% 32volts
• Manufacturer: Murata
• Type: PTCr

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

11
!Note
76
No.
*: The resistance measurement after the test.
**: Above mentioned soldering is done under the following conditions at our side.
Overheat Sensing Chip Tight Tolerance Type Specifications and Test Methods
1
2
3
4
5
6
7
8
9
PRF15_103R Series
It is measured by applying voltage less than 3VDC after left at 25 2 C for 2 hours.
· Glass-Epoxy PC board
· Standard land dimension
· Standard solder paste
· Standard solder profile
Above conditions are mentioned in Notice.
Resistance Value (at 25 C)
Vibration
Solderability
Solder-heatability
Dry heat resistance
Cold resistance
Humidity Test
Temperature Cycling
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
The resistance value should be within the
specified tolerance.
There is no abnormal appearance after the test.
Resistance change is less than 20%.(*)
Min. 95% electrode is covered with new solder.
Resistance change is less than 20%.(*)
There is no abnormal appearance after the test.
Resistance change is less than 20%.(*)
There is no abnormal appearance after the test.
Resistance change is less than 20%.(*)
Rating value
After applying maximum operating voltage for 3 minutes and
leaving for 2 hours at 25 C, measured by applying voltage of
less than 3VDC.
Soldered PTC to PCB (**)
· Vibration: 10 to 55 to 10Hz (1min.)
· Max. Amplitude: 1.5mm
Vibrate for 2 hours in each of 3 mutually perpendicular plane for
a total of 12hours.
This test condition is according to "JIS C 60068-2-6 (1999)."
· Solder temp.: 230 5 C
· Solder: Sn 63%/Pb 37% (or 60/40%)
· Soaking time: 3 0.5 secs.
· Soaking position: Until a whole electrode is soaked.
This test condition is according to "JIS C 60068-2-58 (2006)."
· Solder temp.: 260 5 C
· Solder: Sn 63%/Pb 37% (or 60/40%)
· Flux: Containing less than 0.2wt% of chlorine.
· Soaking time: 10 1 secs.
· Soaking position: Until a whole electrode is soaked.
· Preheating: 150 5 C 3 mins.
This test condition is according to "JIS C 60068-2-58 (2006)."
· Soldered PTC to PCB. (**)
· +125 3 C leave for 1000+12/-0 hrs.
This test condition is according to "JIS C 60068-2-2 (1995)."
· Soldered PTC to PCB. (**)
· -20 3 C leave for 1000+12/-0 hrs.
· Soldered PTC to PCB. (**)
· +60 3 C, 90 to 95%RH leave for 1000+12/-0 hrs.
· Soldered PTC to PCB. (**)
· Cycles: 5 cycles
· Conditions: See below table
· Soldered PTC to PCB. (**)
· 85 3 C (in air), load max. operating voltage for 1000 12 hrs.
Step
1
2
3
4
Room temp.
Room temp.
Temp. ( C)
+125+3, -0
-20+0, -3
Method of Examination
Time (minute)
10 to 15
10 to 15
30
30
Apr.25,2011
R90E.pdf