project

specification

Resistance range

1 Ω ～10M Ω

Resistance tolerance

Minimum ±1%

Temperature Coefficient of Resistance

1Ω≤R<100Ω

1MΩ<R≤10MΩ

±500PPM /℃

100 Ω≤R≤1MΩ

±250PPM /℃

Abrasion resistance

≥ 1 million times

To 600 times / carried out at a rate of abrasion resistance test ( a round trip meter 1 times ) , 200 after the index products to meet the requirements million times

Insulation resistance

1000MΩ

Apply a 100V DC voltage between the substrate and the electrode , and test the insulation resistance value after 1 minute of electrification

Solderability

Weldable area is greater than 95%

Dip the product into the inactive flux for about 2s , then remove the excess flux, immerse the product into the solder bath to a depth of 10mm , the solder bath temperature is 240℃±5℃ , the immersion time is 3s ±1 s , and the resistor is cleaned with solvent Flux residues on the film , observed under a magnifying glass of 10 times

Resistance to welding heat

No visible damage

△R≤±(1%R+0.05Ω)

Immerse the component into the solder tank to a depth of 10mm , the temperature in the solder tank is 270℃±5℃ , the immersion time is 10s ±1 s , and place it at room temperature for 1 to 2 hours. Clean the excess flux with a solvent, and then measure the resistance value

Rapid temperature change

No visible damage

△R≤±(1%R+0.05Ω)

Normal temperature (2 to 3 minutes ) -55°C±3°C for 30 minutes                125°C±3°C for 30 minutes Normal temperature (2 to 3 minutes ) , after 5 consecutive cycles from low temperature to high temperature , the component recovers for more than 1 hour under standard atmospheric conditions , Within 2 hours, measure the resistance value

Steady state damp heat

No visible damage

△R≤±(3%R+0.1Ω)

The component is maintained for 1000 hours in a humid heat test box with a temperature of 40℃±2℃ and a humidity of 90% to 95%

Solvent resistance

No visible damage

Dissolving solution: trichloroethylene, immersed in 10H±1H

Storage conditions

  Temperature: 5℃ ～35℃ , relative humidity: 45% ～70%RH

  Avoid storing in corrosive gas environment