Kingtronics Blog

Kingtronics produce and sell Diode Rectifier M7, one of our best seller with competitive price and excellent lead time support: regular stock or 2-4 weeks!
In the market, Diode M7 also be called in different way: S1M, SMA, GS1M, SMD 1N4007.

following are our product data, welcome share with us your inquiry for further best quotation. :)
M7 (SMD 1N4007)  DO-214AC  T&R     SPQ: 5kpcs/Reel
Product video: https://www.youtube.com/watch?v=m3-DJONbqvU

* RoHS and Reach Certification
* Reverse voltage 50 to 1000 Volts; forward current -1.0 Ampere
* The plastic package carries Underwriters Laboratory   Flammability Classification 94V-0
* Low reverse leakage
* Built-in strain relief, ideal for automated placement
* High forward surge current capability
* High temperature soldering guaranteed: 250℃/10 seconds at   terminals

 A Zener Diode is a special type of rectifying diode that permits current to flow in the forward direction as normal, but will also allow it to flow in the reverse direction when the voltage is above a certain value – the breakdown voltage known as the Zener voltage.

Surge arresters are designed to protect electrical equipment from damaging effects of spikes and transients caused by lightning, utility switching, isolation arcing, electrical motor cycling, or any other sudden change in electrical power flow on incoming AC power lines. 

And these devices also provide ideal protection for outdoor lighting and pole lamps, panel boards, workshops, refrigeration systems, electric motors and controls, heat pumps and air conditioning equipment, and many other electrical devices. 
More information about our products: http://www.kingtronics.com/surge-arresters/

Gas-filled surge arresters operate on the gas-physical principle of the highly effective arc discharge. Electrically, surge arresters act as voltage-dependent switches. As soon as the voltage applied to the arrester exceeds the spark-over voltage, an arc is formed in the hermetically sealed discharge region within nanoseconds. The high surge current handling capability and the arc voltage, which is almost independend of the current, short-circuit the overvoltage. When the discharge has died down, the arrester extinguishes and the internal resistance immediately returns to values of several 100 MΩ.

The surge arrester thus meets almost perfectly all requirements made on a protective element. It reliably limits the overvoltage to permissible values, and – under normal operating conditions – the high insulation resistance and the low capacitance contribute to the fact that an arrester has virtually no impact on the system to be protected.

Gas-filled surge arresters are classical components for protecting the installations of the telecommunications. It is essential that IT and telecommunications systems -with their high-grade but sensitive electronic circuits – be protected by arresters. They are thus fitted at the input of the power supply system together with varistors and at the connection points to telecommunication lines. They have become equally indispensable for protecting base stations in mobile telephone systems as well as extensive cable television (CATV) networks with their repeaters and distribution systems.

These protective components are also indispensable in other sectors:

• In AC power transmission systems, they are often used with current-limiting varistors
• In customer premises equipment such as DSL modems,WLAN routers, TV sets and cable modems
• In air-conditioning equipment

The integral black-box concept offers graduated protection by combining arresters with varistors, PTC thermistors, diodes and inductors to create an ideal solution for many applications.