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8.3.3.3 Visual inspection 3：Minimum end solder width of MELF resistors after reflow soldering minimum end solder width of melf resistors after reflow soldering in larger than 50% of the diameter of the resistors or larger than 50% of the width of the solder pad. the wider the solder width the better the solder strongth. the most important of the the requirement of getting wide solder width at the end of melf resistors is the sufficient amount of tin paste on the solder pads. minimum end solder width of melf resistors after reflow soldering in larger than 50% of the diameter of the resistors or larger than 50% of the width of the solder pad. the wider the solder width the better the solder strongth. the most important of the the requirement of getting wide solder width at the end of melf resistors is the sufficient amount of tin paste on the solder pads.

HPC17K0T100 is one kind of ultra-high pulse load ceramic composition resistors and is the perfect replacement of OY2 made by OHMITE. HPC17K0T100 made by Thunder Precision Resistor Co., Ltd. is an even BETTER replacement for OY2 with temperature coefficient lower than 900ppm while OY2 is about 1300+/-300ppm. The high pulse load stability of HPC17K0T100 is extremely perfect that is around 0.2% after 50 pulse of 6000V Lightning surge pulses applied.

Thunder Precision Resistor Co., Ltd. disclosed the process and preparation methods of making a new kind of UHF RF resistors: (1) Take a certain mass of nano silicon carbide with a particle size of 20nm ~ 50nm and disperse it in 95% ethanol with a mass multiple of 5 ~ 8 times, and then add nano alumina with a particle size of 20nm ~ 50nm with a mass of 2 ~ 3 times of nano silicon carbide to fully disperse it; (2) Add silane coupling agent dl602 with 2% ~ 3% mass of nano silicon carbide, fully stir until the system thickens, and then add organic Polyborosilazane iota-9120 with 0.3 ~ 0.5 times mass of nano silicon carbide to fully disperse; (3) in air atmosphere, the mixture of step 2 (step 2) was desiccant and cured by spray drying method, and the modified filler was prepared.

There are many different types of Resistor available which can be used in both electrical and electronic circuits to control the flow of current or to produce a voltage drop in many different ways. But in order to do this the actual resistor needs to have some form of “resistive” or “resistance” value. Resistors are available in a range of different resistance values from fractions of an Ohm ( Ω ) to millions of Ohms.

Thunder Precision Resistor Co., Ltd. applied RoHS and Reach Test to guarantee all materials used in the products as well as the packing materials meet the Restriction of Hazardous Substances and REACH/SVHC requests. Thunder Precision Resistor Co., Ltd. requested all the material suppliers to provide RoHS and REACH/SVHC test reports annually and applied the RoHS and REACH/SVHC tests our selves occasionally to make sure all materials are under control even the packing materials. Thunder Precision Resistor Co., Ltd. makes high precision resistors and special resistors, such as high power precision wire wound resistors up to 150W with temperature coefficient low than 15ppm, high resistance resistors up to 10G Ohm with temperature coefficient of resistance lower than 25ppm/℃, ultra-precision resistors with tolerance up to 0.005% and temperature coefficient lowen than 1ppm/℃, high resistance wire wound resistors with resistance up to 100k Ohm, etc.

​晶圆电阻(melf resistors) 焊接效果目视检查项目与合格判据表 Visual inspection items and qualification criteria of welding effects for melf resistors extracted from IPC-A-610G by Thunder Precision resistor Co., Ltd.

Hackers intercepted Thunder Precision Resistor's users' emails and sent them to us after modifying the email website suffix. All the information we replied to these email was rejected but we didn't received the failure info. Hackers intercepted our replied email and then tampered with the bank information, sent these fake info to our users, resulting in the failure of users' payment for several times. Please pay attention to the mail address you replied to check it is the normal one or different from the normal one. Thunder Precision Resistors will pay attention to those email contain certain importance info such ad bank payment info and the contract info, etc.

分级说明：本文件规定的要求反映了如下三个产品级别：晶圆电阻使用厂家可以根据自己产品的定位选择合格判据的级别 1级：是使用在普通类电子产品中的仪器仪表生产过程中的检验要求； 2级：是使用在有可靠性要求的仪器仪表产品、设备的生产制造过程中的检验要求； 3级：是使用在有较高可靠性要求的仪器仪表产品、设备的生产制造过程中的检验要求

Ceramic composition resistors are 100% non-inductance and chemically inert so they have high reliability to provide a solution for wide range of applications, such as high-voltage and high energy surges, circuit breakers, spark plugs, distributor points, or coil leads to limit spurious high frequency signals from being emitted or carried on transmission lines.

MELF type ceramic resistors HPCM series are high pulse load resistors that are the good choice of ignition resistors of motorcycle and automobile starting system.