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参数资料
| 型号： | PTGL13AR0R8H2B71B0 |
| 厂商： | Murata Electronics North America |
| 文件页数： | 8/105页 |
| 文件大小： | 0K |
| 描述： | THERMISTOR |
| 标准包装： | 100 |
| 系列： | Posistor® |
| 在 25°C 时的电阻（欧姆）： | * |
| 电阻公差： | ±25% |
| 工作温度： | -10°C ~ 60°C |
| 功率 - 最大： | 2.4W |
| 安装类型： | 通孔 |
| 封装/外壳： | 圆盘形， 13.5mm 直径 x 4.0mm W |
| 包装： | 散装 |
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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.
Basic Characteristics of POSISTOR r
Technical Terms
1. Protective Threshold Current
R90E.pdf
Mar.4,2014
of POSISTOR r
The maximum current value is called the "Protective
Threshold Current" for Voltage vs. Current characteristics
(static).
Load Curve of Circuit and Voltage - Current Characteristics
a Load curve in normal state
(normal current)
When smaller than the protective threshold current flows
in POSISTOR r , it reaches its stability (as shown in figure
on right) at the intersection (A) of the load curve (a) and
voltage-current characteristics of POSISTOR r (c). And
Vp
b
b Load curve in abnormal state
(abnormal current)
c Voltage-current characteristics
of POSISTOR r
POSISTOR r works as a normal fixed resistor.
However, when larger than protective threshold current
E
R L
c
flows, it stabilizes at the intersection (B) with the load
curve (b).
I =
E - Vp
R L
I
a
A
B
2. Protective Threshold Current Range
Voltage (log)
E
Protective threshold current varies depending on the
ambient temperature, resistance value, temperature
characteristics and shape. (see Figure on right) The
maximum value of trip current and the minimum value of
the hold current are in the range of ambient temperature
Protective Threshold Current Range
1000
800
Trip Curren t
-10 to +60°C.
That is, when a current is smaller than the hold current,
POSISTOR r works only as a fixed resistor. When larger
than the trip current flows, however, POSISTOR r
protects the circuit from overload.
600
400
200
0
Protective Threshold Current
Hold Current
-20 0 20 40 60
Ambient Temperature (°C)
3. Operating Time
A period starting from the voltage input to the moment
current itself sharply attenuates is called "Operating
Time." Conventionally, operation time (t 0 ) is determined
to be the period until inrush current (I 0 ) decreases to a
Operating Current
I 0
level one half the original inrush current (I 0 /2).
I 0
Operating Time
2
t 0
Time (sec.)
6
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