Surge protection 31J Metal Oxide Varistor 90pF For Energy Saving Lamp

HEL K Type Metal Oxide Varistor 7D471K 7mm 470V 1200A 31J 90pF For Energy Saving Lamp

Features Of The Metal Oxide Varistor 7D471K

◆ Small size, large flow capacity and energy tolerance

◆ Epoxy resin insulation encapsulation

◆ Response time: <25ns

◆ Ambient temperature: -40℃～+85℃

◆ Insulation resistance: ≥500MΩ

◆ Varistor voltage temperature coefficient: -0.5%/℃

◆ Chip diameter: 5, 7, 10, 14, 20, 25, 32, 40mm

◆ The allowable deviation of the varistor voltage is: K±10%

Function Of The Metal Oxide Varistor 7D471K

①Overvoltage protection of transistors, ICs, thyristors and semiconductor switching elements and various electronic and electrical equipment
②Surge absorption and overvoltage protection of household appliances
③Industrial electrical surge absorption
④Electrostatic discharge and noise signal cancellation
⑤Surge absorption of relays and solenoid valves
⑥Overvoltage protection of leakage switch
⑦Lightning protection and overvoltage protection of telephone program-controlled switches and communication equipment

Dimension Of The Metal Oxide Varistor 7D471K (mm)

Note: If the foot type is non-linear such as outward bending, usually Hmax=14mm

Electrical Parameters Of The Metal Oxide Varistor 7D471K

Inrush current impulse level Of The Metal Oxide Varistor 7D471K

Remark: the Impluse voltage testing standards(1.2/50μs) with 40 times are only applicable to the products

which with the varistor voltage more than 430V.

Safety certification and corresponding models Of The Metal Oxide Varistor 7D471K

Remark:
CQC (GB/T10193, GB/T10194).
UL1449(VZCA2/UL,VZCA8/C-UL), 105℃, 125℃, 130℃.
VDE (IEC61051-1, -2, -2-2).
CSA (C22.2 No.269.5-17).
Q1 = CQC (GB4943.1, GB8898).
Q2 = VDE (IEC60950-1 Annex.Q).
The above certification specifications may be changed, if necessary, please ask the quality control

department for the latest version.

Derating curve graph and volt-ampere characteristic graph

Maximum surge current imax = f(tr,pulse train)

v/i characteristics

A=Leakage current, B = Protection level for worst-case varistor tolerances

Why choose us - AMPFORT

Dongguan Ampfort Electronics Co., Ltd. is a high-tech enterprise specializing in R&D, manufacturing and sales, committed to becoming a comprehensive supplier of circuit protection components.

We introduced advanced quality system,management systems and high-precision automation equipment from Germany, set up multiple production bases and continue to increase product lines. Our team consist of experienced engineers, passionate business elites, and regularly trained skilled workers, which provides a solid foundation for quality assurance and productivity performance. Moreover, our products have passed safety certifications of many countries and are favored by many consumers by years’ unremitting efforts.

We cooperated with universities and colleges, and will continue to research and develop new products , committed to high-quality circuit protection solutions, and provide global customers with efficient technology, products, and testing support to meet their requirements for rapid development of new products. We are gradually updating from "Made In China" to "Created In China" and to "Intelligent Manufacturing In China", from circuit design to product testing, we will provide you with one-stop service in the field of circuit protection.After years of intensive cultivation, we have maintained a good relationship with our peers and have become distributor of many famous electronic component brands to meet the diverse needs of customers.

The main products include: Thermistors, Varistors, Temperature Sensors, Fuses and corresponding Hardware and Plastic accessories, Inductors, Thermal Protector, Overload/Composite Protectors, Discharge Tubes, Photoresistors and Wiring Harnesses etc. Through the combination of different process devices,Ampfort Electronics can meet customers' individual circuit protection requirements. Our products are widely used in: power adapters, switching power supplies, chargers, transformers, computers, telephones, household appliances, communication products, lighting products, toy products, various instruments and various electronic cables, electrical products, IT, Consumer electronics, automobiles, batteries and other fields.

Choose us, Ampfort will be your loyal and reliable partner for protection circuit products !

Philosophy Survive with integrity and service, and develop with quality and innovation.

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Purpose Serve customers and develop enterprises

Benefit the employees and return to the society

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