Fax : 86-755-86229508
Address: The 3rd Industry Zone, Yanchuan, Songgang, Baoan District, Shenzhen, Guangdong, China
Pakheng resistors company, with high performance and excellent service, can output BH Type Ceramic Cement Fixed Resistors Wire Wound 5W 680ohm 680RJ Wide Resistance Range High Frequency With DIP Package at factory price. We have professional technical team and advanced production equipment to ensure that the quality of the products and services. We also can supply white rectangular resistors and cement resistors，your enquiry will be warmly welcome.
Cement resistors are made by winding the resistance wires on the alkaliless ceramic cores,then coated with noncorrosive, heat-proof and humidity-proof material. Cement type is the one with special flameproof cement stuffed in the ceramic case.
5. excellent heat resistance, resistance temperature coefficient is small, a linear change.
6. resistance to short time overload, low noise, resistance has not changed year after year.
7. Explosion-proof performance, and play a protective role
8. porcelain rod winding and then welded joints, the system made a precise resistance and extend the life.
Ceramic core : High alumina ceramic is used.
Resistor element :The resistor element shall consist of metal oxide film or Resistance wire
Terminal : Tinned iron cap.
Connection : The lead wire,which is plated with solder,shall be mounted to the caps by welding process.
Lead wire:Soldered or tinned annealed wire.
Silicon cement : Silicon resin is used. Accord with UL-94V-0 Nonflammable specification
Ceramic case : High thermal conductivity
Complete insulation suitable for printed circuit boards,Power supplies ,Voltage dividers ,Motor controllers ,Automotive applications ,Power electronics circuits.
Specification and Dimension:
Rate Power Derating Curved：
Test the resistance value at normal temperature added 100℃,calculate per ℃ resistance value rate.
Short time overload
1~4W:According 5 times rated voltage ,5~10W: According 10 times rated power to account the voltage or max .overload voltage (get the lower)for 5 seconds.
Resistance to soldering heat
Immerge into the 350±10℃ tin stove for 2~3 seconds.
Immerge into the 245±3℃ tin stove for 2~3 seconds.
The area of soldering is over 95%
At -55℃ for 30 min,then at +25℃ for 10~15 min,then at +275℃ for 30 min,then at +25℃ for 10~15min, total 5 cycles.
Load life in humidity
Overload rated voltage or Max. working voltage(get the lower) for 1000 hours (1.5 hours on and half-hours off) at the 40±2℃ and 90~95% relative humidity.
Load life in heat
Overload rated voltage or Max. working voltage(get the lower)m for 1000 hours (1.5 hours on and half-hours off) at the 70±2℃.
Respectively load AC voltage by5,10,16 times rated power for 5 min.
No visible flame
Available Quality Test: short time overload pulse/surge test/high temperature aging test/RoHS test
Available Test Equipment: Withstand Voltage Tester/High Voltage Tester/Resistance Test Table/X-Ray Fluoroscopy
Package of SQO type cement resistors:
1. We will ship the items within 3 working days after the payment confirmed.
2. We can ship to you by UPS/DHL/TNT/EMS/FedEx. Please contact us directly and we will use your preferred ways. For the Countries & Regions where EMS cannot deliver, please choose other shipping ways.
3. We are not responsible for any accidents, delays or other issues caused by the forwarder.
4. Any import fees or charges are on the buyer's account
[Refund & Replacement]
1. We appreciate your business and offer an instant 7 days return policy. (7 days after receiving the items).
2. If the items you purchase from our store are not of perfected quality, that is they don't work electronically to manufacturers specifications, simply return them to us for replacement or refund.
3. If the items are defective, please notify us within 3 days of delivery.
4. Any items must be returned in their original condition to qualify for a refund or replacement.
5. The buyer is responsible for all the shipping cost incurred.
After Sales Service:
We are responsible for all the goods from us. If you have any questions about the goods, you can contact us freely in any time.
As add-valued service, we can help our customers arrange their goods combination shipment or other goods they want from here China. We also can help our customer pay to their many different suppliers here.
Pakheng electronics offers commercial grade ceramic-housed power wirewound and film resistors. For medium to high rated power (1W...50W), SQ resistors provide full electrical insulation mounted in a ceramic case.
Pls do not hesitate to contact us if you are interested in our resistors!PakHeng Electronics is one of the leading bh type ceramic cement fixed resistors wire wound 5w 680ohm 680rj wide resistance range high frequency with dip package manufacturers and suppliers in China, offering the free sample and competitive price. Welcome to wholesale the high quality bulk resistors made in China from us. It if of good performance and high safety.