参数资料
型号: PRF21BE471QB5RA
厂商: Murata Electronics North America
文件页数: 12/105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: *
! 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.
Application Notes
c Overcurrent Protection for Communication Facility
POSISTOR r Lead type: PTGL series
1. Applications
POSISTOR r is an efficient device to protect a telephone
line interface (SLIC: Subscriber-Loop-Interface-Circuit)
against AC line contact.
(1) Landline telephones or FAX machines
(2) Telephone interface of STB, VoIP equipment
(3) Any other equipment of communication facility having
a phone line interface
Replacement idea for a current fuse.
R90E.pdf
Mar.4,2014
Ring
Ring
POSISTOR r
SLIC
Tip
2. Benefits
(1) Automatic reset from protective trip up to 265V AC
line contact
(2) Compatible with the 600V over voltage test by
UL60950
(3) High resistance to the lighting surge (*A surge
absorber is still required to protect SLIC)
3. Recommended part numbers
Choose an appropriate part number based on the hold
current and on the resistance value required to the
operation current of SLIC.
Tip
SLIC
Part Number
Max. Max.
Voltage Current
(V) (A)
Hold Current
(at +60 °C)
(mA)
Trip Current
(at -10 °C)
(mA)
Resistance
(at +25 °C)
(ohm)
Body
Diameter
(mm)
Thickness
(mm)
Lead Lead
Space Diameter
(mm) (mm)
More
Details
PTGL07BB220N0B52A0
PTGL09AR390N0B52A0
PTGL09AR250H8B52B0
250
250
265
0.5
0.6
1.0
90
100
118
300
280
330
22 ±30%
39 ±30%
25 ±25%
8.0
10.0
10.0
6.0
6.0
6.0
5.0
5.0
5.0
0.6
0.6
0.6
page 56
page 56
page 57
Please ask for details.
10
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