PRF18BD471QB1RB Murata, PRF18BD471QB1RB Datasheet - Page 71

• Manufacturer Part Number: PRF18BD471QB1RB
• Description: PTC THERMISTOR
• Manufacturer: Murata
• Series: PRF18r
• Type: PTCr

Specifications of PRF18BD471QB1RB

• Thermistor Type: PTC
• Resistance: 470ohm
• Thermistor Tolerance: ± 50%
• Operating Temperature Range: -20°C To +110°C
• Operating Voltage Range: 32VDC
• Thermistor Case Style: 0603
• No. Of Pins: 2
• Length/height, External: 1.6mm
• Tolerance: 50 %
• Termination Style: SMD/SMT
• Current Rating: 0.1 mAmp
• Dimensions: 0.80 mm W x 1.60 mm L
• Voltage: 32 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

10
!Note
!Note
70
1
No.
for Temperature Sensor Lead Type Specifications and Test Methods
1
2
3
4
5
6
7
8
Specifications and Test Methods
Resistance Value
Withstanding Voltage
Tensile Strength of
Lead Wire Terminal
Bending Strength of
Lead Wire Terminal
Solderability
Terminal Durability of
Soldering
Humidity Test
Load Cycle Test at
High Temperature
• 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 approve our product specifications or transact the approval sheet for product specifications before ordering.
Please read rating and !CAUTION (for storage, operating, rating, soldering, mounting and handling) in this PDF catalog to prevent smoking and/or burning, etc.
This catalog has only typical specifications. Therefore, you are requested to approve our product specifications or to transact the approval sheet for product specifications before ordering.
Item
Satisfies specification
No problem
No damage
Lead wire does not come off
Solder is applied around the lead wire covering
3/4 or more of the circumference without gap in
the axial-direction.
∆R/R25VT15%
∆R/R25VT20%
∆R/R25VT20%
Rating Value
Test circuit
PTH
S.W
Rs
Resistance value is measured by applying voltage under 1.5Vdc
(by a direct current of less than 10mA) in a silicone oil vessel.
We apply AC voltage 120% that of the maximum voltage to
POSISTORr by raising voltage gradually for 180T5 seconds at
25°C. (A protective resistor is to be connected in series, and the
inrush current through POSISTORr must be limited below max.
rated value.)
The load is gradually applied to each terminal of POSISTORr
until the force of the following table in the axial-direction with
fixing POSISTORr's body itself and this load is kept for 10
seconds.
POSISTORr is held so that it is perpendicular to the lead wire
with the following load hanging in the axial direction of the lead
wire. The lead wire is slowly bent toward 90° and returned; then it
is slowly bent in the opposite direction and returned to original
state. (Above mentioned procedure is done slowly with one
cycle.)
The lead wire of POSISTORr is soaked in a Isopropyl Alcohol
(JIS K 8839) or ethanol (JIS K 8101) solution (about 25wt%) of
colophony (JIS K 5902) for 5-10 sec. And, each lead wire is
soaked in molten solder (JIS Z 3282 H60A) at 235T5°C from the
bottom to a point of 2.0-2.5mm for 2T0.5 sec.
The lead wire of POSISTORr is soaked in molten solder (JIS Z
3282 H60A) at 350T10°C from the bottom to a point of 2.0-2.5
mm for 3.5T0.5 sec. And, after the device is left at room
temperature (25°C) for 24T4 hours, the resistance is measured.
POSISTORr is set in an environmental chamber at 40T2°C and
90-95% humidity for 500T4 hours.
And after the device is left at room temperature (25°C) for one
hour, the resistance measurement is performed.
POSISTORr is set in an environmental chamber at 85T3°C with
maximum voltage applied for 1.5 hours and then is left without
voltage applied for 0.5 hours.
This cycle is repeated for 1000T10 hours, and after the device is
left at room temperature (25°C) for one hour, the resistance
measurement is performed.
(A protective resistor is to be connected in series and the inrush
current through POSISTORr must be limited below max. rated
value.)
Series
PTFM
Series
PTFM
PTFL
PTFL
Method of Examination
Force
4.90N
9.80N
Force
2.45N
4.90N
R90E7.pdf 05.3.30