Home > Products > Varistor/Surge protector > high voltage surge protector zinc metal oxide varistor surge arrestor surge absorber 7mm 7D431K electronics components
high voltage surge protector zinc metal oxide varistor surge arrestor surge absorber 7mm 7D431K electronics components
- 2147483647 Piece / Pieces per Month
- SHENZHEN;HONGKONG;GUANGZHOU
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Product Details
Place of Origin: | Guangdong, China | Brand Name: | HEL | Model Number: | 7D431K |
Type: | Varistor | Technology: | Ceramic Composition | Package Type: | Throught Hole |
Resistance: | 430v | Resistance Tolerance: | +/-10% | Rated Power: | 0.25W |
Operating Temperature: | +40-85 |
Product Description
Electronic components- Voltage Dependent Resistor VDR varistor 7D431K
1000PCS/Plastic bag
SPD,VAR275VAC13.9Joule HEL7D431K
Type MYG Varistors are made of semiconductor ceramic materials composed mainly of zinc oxide. They have non-linear resistance that change as a function of applied voltage. It has small size, high current capacity, and high protection level.
PRODUCT:HEL7D431K
Varistor voltage(V1mA):430V/387-473V
Maximum Allowable voltage:275VAC/350VDC
Maximum Clamping voltage:710V
Withstanding Surge Current(8/20us):1200A/1 time
Rated Wattage(W):0.25W
Energy(2ms):18.1J Typical Capacitance:100PF
Dmax=9.00mm; Hmax.=12mm; Lmin=15mm; d0.6+/-0.03mm; A=5mm+/-1mm; Tmax=5.5mm;
Ordering Notes:
1. Ceramic Disc: Zinc Oxide Varistor
2. Material of coating: Epoxy resin
3. Material of Leads: CP wire
4. Lead type: Straight lead
5. Package: Bulk pack
Recongnized Certificate:
Function:
WORKSHOP
Technical Data:
1. Varistors Voltage: The voltage between two terminals with the specified measuring current 1mA DC applied is called V1mA,The measurement shall be made as fast as possible to avoid heat affection.
4.Clamping Voltage:The peak voltage at class current (Standard surge currentwaveform is 8/20μS). The class current is a peak value of current which is1/10 of the maximum peak current for 100 impulses at per minute for 8/20μS.
For the 2mS waveform:J=2*Ip* Vc*10-3 For the 10/1000μS waveform:
J=1391*Ip* Vc*10-6 Where J -- Energy absorbed in joules.
Ip -- Maximum let-through current in amps.Vc-- Measured clamping voltage in volts.
6.MaximumPeak current : The maximum current within the varistors voltage change of ±10% with the standard impulse current (8/20μS) applied one time.
7. Capacitance: Typical value measured at 1Vrms and test frequency of 1kHz.
8.Solderability: After dipping the terminals to a depth of 3.5-0.5 mm from the body in a soldering bath of temperature 235℃±5℃for 2± 0.5seconds, the terminal shall be visually examined.
9.Resistance to Soldering heat: After each lead shall be dipped into a solder bath having a temperature 260℃±5℃,to a point 2.0 to 2.5mm from the body of the unit. Using shielding Board(t=1.5mm) ,be held there for specified time(5D series: 5±1 seconds and other series:10 s ),and then be stored at room temperature and humidity for 1 to 2 hours. The change of V1mA and mechanical damages are examined.
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Contact Us
- Shantou Songhua Electric Firm
- Contact nameJocelyn Lee
- Phone86-754-15767250055
- AddressGaoxin Industrial Shantou,Guangdong
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