Resistance to sulphur-bearing gas (AS version only): ASTM-B-809
Voltage proof
Volts
Note: A 0.01 Ohm addition to be added to the performance of all resistors <10 Ohms.
ΔR%
ΔR%
ΔR%
ΔR%
ΔR%
1
1
1
0.25
0.25
0.25
500
ΔR%
ΔR%
Maximum
1
0.1
Zero at 155°C
0.1
0.2
0.25
0.05
0.05
0.05
Typical
0.25
0.02
Pulse Performance Data
Pulse Performance Data
Lightning Surge
Lightning surge resistors are tested in accordance with IEC 60 115-1 using both 1.2/50µs and 10/700µs pulse shapes. 10 pulses are applied. The limit of
acceptance is a shift in resistance of less than 1% from the initial value.
2512
2010
1206
0805
0603
Lightning Surge
Lightning surge resistors are tested in
accordance with IEC 60 115-1 using
both 1.2/50µs and 10/700µs pulse shapes.
10 pulses are applied. The limit of
acceptance is a shift in resistance of less
than 1% from the initial value.
2512
2010
1206
0805
0603
General Note
TT Electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
The single impulse graph is the result of 50 impulses of rectangular shape applied at one minute intervals. The limit of acceptance was a shift in
resistance of less than 1% from the initial value.
2512
2010
1206
0805
0603
Continuous Load Due to Repetitive Pulses
The continuous load graph was obtained by applying repetitive rectangular pulses where the pulse period was adjusted so that the average
power dissipated in the resistor was equal to its rated power at 70°C. Again the limit of acceptance was a shift in resistance of less than 1% from the
initial value
2512
2010
1206
0805
0603
General Note
TT Electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.
中风发生时，一切都是以秒来计算的。延误治疗可能导致大脑重大损伤。伦敦大学医学院的一位博士Alistair McEwan已经获得行为医学研究所(Action Medical Research)的同意，为急救人员开发一种无线诊断系统来减少时间延误。感谢抗血栓药物，一些病人在病情发作的三个小时之内可以完全恢复。但出血也会导致中风。医生在治疗之前需要确定发病原因，因为不适当的服用抗血栓药物会加重损害。...[详细]
在全球半导体产业因景气不佳而纷传并购、整合之际，两大IT巨头三星、IBM日前却双双宣布，将强化半导体产业投资。 三星电子本周一宣布，已向韩国证券交易所提交一份申请文件，打算2008年投下10.5亿美元，用于升级内存芯片生产线、改进技术工艺，从而提高产能并降低成本。无独有偶。本周二IBM公司宣布，未来3年将投资10亿美元，用于扩充位于纽约州 East Fishkill 的半导体工厂，以消...[详细]
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