The thick film resistor product has the characteristics of small volume, power capacity, high density, shock shock and good heat dissipation performance.
■ Feature
Small size, low profile , 300w high power resistor.
Attaching a large air-cooled heat sink or water-cooling will be necessary.
Rated power is 300W (single resistor).
M4 screw mount, wire leads, very low series inductance.
Higher density packing, vibration-proof and perfect heat dissipation possible.
■ Application
Snubber resistors for electric power system, aviation instrument, power supplies, gate resistors, pulse generators, high frequency amplifiers, dumping resistance of theater audio equipment of dividing network of loud speaker systems, etc.
■ Order Information
LPR300-1RJ，TB
■ Drawing and Dimensions
■ Specifications and Performances
| Items | LPR300 | Test Conditions |
| RatingPower | 300 Watts | At flange temperature -55 to + 25 deg C |
| ResistanceRange NominalResistance | 0.1 ohm to 51 Kohm Single Any value | |
| TCR | +/-100 ppm/C(A) | For -55 to +155 deg C, typical, over 1.0 ohm |
| Tolerance | +/-5.0%(J) | +/- 1% (F) is available optionally |
| OperationTemp.Range | -55 - +155 deg C | |
| Max.AppliedVoltage | E=P.R | |
| WithstandingVoltage | 2000 V AC | 60 seconds. Between terminals and flange. |
| LoadLife | +/-1.0 % | 25 deg C, 90 min. ON, 30min.OFF, 1000 hours. |
| Humidity | +/-1.0 % | 40 deg C, 90 to 95% RH, DC0.1W, 1000 hours. |
| TemperatureCycle | +/-1.0 % | -55C, 30min., +155C 30min., 20 cycles. (-55deg C,30min., +120C, 30min., 20cycles.) |
| ShortTimeOverload | +/-0.25 % | Rating watt×1.5, 2.5 seconds, with heat sink. |
| InsulationResistance | Over 1000 Meg ohm | Between terminals and flange. |
| Vibration | +/-0.25 % | IEC60068-2-6, and specification is sin-wave sweep wave form, 10Hz-55Hz, 10cycles, amplitude 0.75mm, 45minutes. direction x-y z. |
| Weight | 20 grams |
Materials:
Flange: Ni plated copper plate.
Substrate: High grade Al2O3 ceramics substrate.
Resistor: Thick film resistor.
Terminals: Silicone insulated wire.
Surface electrical insulation: Glass coating.
Note:
When water cool heat sink is used, actually keeping flange at less than 25 deg C is difficult. When flange temperature is over 25 deg C, rating will be decreased as shown asderating curve.
In short pulse application, peak power will be restricted under 300W.
If you are interested in our products and want to know more details,please leave a message here,we will reply you as soon as we can.
Tel: 0086-519-83976620
WhatsApp: +86-13806118535
Email: liujindong@nfdq.cn
No. 6, Xinxin Intelligent Industrial Park，Changzhou, Jiangsu
Changzhou Southern Electronic Element Factory Co., Ltd. is located in the city of Changzhou, which has a long history in Jiangsu Province. It is situated in the most active economic area in Yangtze River Delta Centre. The transport is very convenient. Expressway, Fast railways run though it. And it only takes one and half hours to reach Shanghai or Nanjing city. Airplane from here is through to major cities in China.
Changzhou Southern Electronic Element Factory Co., Ltd. was founded in 1989. After several years' development and effort, it has invested and opened up three subsidiary companies, in Yancheng city, Huai'an city in Jiangsu Province, and Lang'xi City in Anhui Province respectively.
