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参数资料
| 型号： | PRF21BE471QB5RA |
| 厂商： | Murata Electronics North America |
| 文件页数： | 68/105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： | * |
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! 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.
PTGL Series Speci?cations and Test Methods
R90E.pdf
Mar.4,2014
Item
Continuous Operating
Temperature
Resistance Value
(at 25°C)
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
Rating Value
-10 to +60 °C
Satisfies ratings
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.
=
Δ R/R25 < ±15%
Δ R/R25 < =±20%
Δ R/R25 < =±20%
Method of Examination
The temperature range with maximum voltage applied to the
POSISTOR r .
Resistance value is measured by applying voltage under
1.5Vdc (by a direct current of less than 10mA) at 25°C.
But it must be measured after maximum voltage is applied for
180 seconds and then is left for 2 hours at 25°C.
As for 16V series, measurement probes should be connected
on the lead wire at the point within 2mm from the below side of
the forming.
Resistance should be measured by 4 wiring method.
We apply AC voltage 120% (16V Series: 110%) that of the
maximum voltage to POSISTOR r by raising voltage gradually
for 180±5 seconds at 25°C. (A protective resistor is to be
connected in series, and the inrush current through
POSISTOR r must be limited below max. rated value.)
The load is gradually applied to each terminal of POSISTOR r
until the force of the following table in the axial direction with
fixing POSISTOR r 's body itself and this load is being kept for
10 seconds.
Lead Diameter
Force
?0.60mm max.
4.90N
?0.65mm min.
9.80N
POSISTOR r is held so that it is perpendicular to the lead wire
with the following lead hanging in the axial direction of the lead
wire. The lead wire is slowly bent to 90° and returned. Then it is
slowly bent in the opposite direction and returned to original
state.
Lead Diameter
Force
?0.60mm max.
2.45N
?0.65mm min.
4.90N
The Lead wire of POSISTOR r is soaked in an Isopropyl Alcohol
(JIS K 8839) or ethanol (JIS K 8101) solution (about 25wt%) of
colophony (JIS K 5902) for 5 to 10 sec. And, each lead wire is
soaked in molten solder (JIS Z 3282 H60A) at 235±5°C from
the bottom to a point of 2.0 to 2.5mm for 2±0.5 sec.
The lead wire of POSISTOR r is soaked in molten solder (JIS Z
3282 H60A) at 350±10°C from the bottom to a point of 2.0 to
2.5mm for 3.5±0.5 sec. After the device is being left at room
temperature (25°C) for 24±4 hours, the resistance is measured.
POSISTOR r is set in an environmental chamber at 40±2°C
and 90 to 95% humidity for 500±4 hours. After the device is left
at room temperature (25°C) for one hour, the resistance
measurement is performed.
POSISTOR r is set in an environmental chamber at 60±3°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
1000±10 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 POSISTOR r must be limited below
max. rated value.)
66
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