Fax : 86-755-86229508
Address: The 3rd Industry Zone, Yanchuan, Songgang, Baoan District, Shenzhen, Guangdong, China
3.Pakheng resistors company, with high performance and excellent service, can output SQO 4W 120ohm Through Hole Porcelain Shell Cement Wire Wound Resistor 5 Resistance Tolerance 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.
1、 Good heat-durability, low temperature coefficient, low noise, high load power, high insulating capacity.
2、 Operating ambient temperature: -55℃~+275℃
3、 Resistance tolerance:±1%、±2%、±5%、±10%
4、 With the extended resistance range and high-temperature rating, the resistors can be specified for operation in harsh environments. The SQ series in BRX wirewound resistors feature a resistance range from 0.1Ω to 390Ω, while the SQ series power film resistors in HRX have a resistance range of 100Ω to 100KΩ.
Specification and Dimension:
Rate Power Derating Curved：
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
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
Package of SQO type cement resistors:
Pakheng: Yes, normally we could offer the sample for free charge but do not pay the cost of freight.
Pakheng: Generally it is 1-2 working days if the goods are in stock. Or it is 7-10 days if the goods are not in stock, it is according to quantity.
Pakheng: Of course, customized packing accepted!! But it may bring some cost, it depends on the qty and the packing.
Pakheng: Full 100% payment before delivery.
Pakheng: Order will be arranged exactly as requested, we will doubly check the packing and qty before delivering out also we will take you photos if required or necessary.
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 SQO 4W 120ohm Through Hole Porcelain Shell Cement Wire Wound Resistor 5 Resistance Tolerance 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.