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参数资料
| 型号： | PWC2010-100KJI |
| 英文描述： | RESISTOR SMD 100K |
| 中文描述： | 电阻贴片10万 |
| 文件页数： | 2/6页 |
| 文件大小： | 295K |
| 代理商： | PWC2010-100KJI |
Applications
Size
0805
1206
2010
2512
Power @70°C
0.125W
0.33W
0.75W
1.5W
Resistance range
1R0 to 10M
Tolerance
0.5, 1, 2, 5%
LEV
150V
200V
400V
500V
TCR
<10R:200ppm/°C
≥
10R:100ppm/°C
Operating temperature
-55 to +155°C
Values
E96 preferred other values to special order
Pulse capability
See following pages
Line
Welwyn
Resistor
Over
Voltage
Protection
Welwyn
Resistor
Input
Lightning Surge
Power
Supply
Circuit
Output
Applications vary from line protection for telecommunications
to surge withstanding resistors for use in circuit breakers.
Details of a typical telecomm and power supply application are
given below.
Telephone lines can be subjected to a large range of voltage
disturbances, many of which can damage switching equipment.
This has led to the need for circuit protection against both high
voltage transients, usually of short duration caused by lighting
strikes and overloads of longer duration, due to direct
connection to mains power lines.
These two faults are separated into primary and secondary
protection. Primary protection handles the high voltage
transients, and is usually located within the exchange.
Secondary protection is usually built into the equipment to be
protected, and deals with both current and voltage limiting.
Voltage limiting prevents damage to the equipment and shock
hazards, and current limiting prevents damage to wiring.
A typical application circuit is shown in fig 1 where the resistors
are designed for ring signal sending through a solid state relay.
The resistors are protected from lightning surge by Over-voltage
Protection in the system and the resistors are required to
withstand pulses of 15 Watts for 1 second and 75 Watts for
0.1 second, repeated 60 times. Test requirements for telecomms
applications are laid down by the International
Telecommunications Union (ITU) and Bell Communications
Research (Bellcore).
Fig 2 shows a typical power supply or battery charger circuit. In
this application the resistor is required to withstand a small
inrush surge, and also a lightning strike surge. The lightning
strike is usually simulated by applying either a 1.2/50μs or
10/700μs pulse shape, the number of pulses and pulse intervals
being specified by the customer or the relevant standard. Typical
standards to be met are Cenelec EN50082-1 and EN50082-2
which are part of the European EMC directives.
To determine the suitability of a PWC series chip resistors for
your application refer to the pulse withstanding data as given
below. Graphs have been produced to show the PWC
performance under single and continuous pulse, maximum
pulse voltage for single and continuous pulses and lighting
surge performance using both 1.2/50μs and 10/700μs pulse
shapes.
Fig 1
Fig 2
2
相关PDF资料 |
PDF描述 |
|---|---|
| PWC2010-100RJI | RESISTOR SMD 100R |
| PWC2010-10KJI | RESISTOR SMD 10K |
| PWC2010-4K7JI | RESISTOR SMD 4K7 |
| PWC2010-680RJI | RESISTOR SMD 680R |
| PWC2010-68KJI | RESISTOR SMD 68K |
相关代理商/技术参数 |
参数描述 |
|---|---|
| PWC2010-100KJI | 制造商:TT Electronics / Welwyn 功能描述:RESISTOR 2010 100K |
| PWC2010-100RF | 制造商:TT Electronics / Welwyn 功能描述:RESISTOR 2010 1% 100R 制造商:TT Electronics / Welwyn 功能描述:RESISTOR, 2010, 1%, 100R |
| PWC2010-100RJI | 功能描述:厚膜电阻器 - SMD 0.75watt 100 ohm 5% RoHS:否 制造商:Bourns 电阻:1.5 Ohms 容差:1 % 功率额定值:25 W 电压额定值:250 V 外壳代码 - in: 外壳代码 - mm: 端接类型:SMD/SMT 温度系数:100 PPM / C 系列:PWR163 工作温度范围:- 55 C to + 155 C 封装:Tube |
| PWC2010-100RJI | 制造商:TT Electronics / Welwyn 功能描述:RESISTOR 2010 100R |
| PWC2010-100R-JT | 功能描述:厚膜电阻器 - SMD 100 OHM 1/2W 5% RoHS:否 制造商:Bourns 电阻:1.5 Ohms 容差:1 % 功率额定值:25 W 电压额定值:250 V 外壳代码 - in: 外壳代码 - mm: 端接类型:SMD/SMT 温度系数:100 PPM / C 系列:PWR163 工作温度范围:- 55 C to + 155 C 封装:Tube |
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