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Power tool speed switch

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Market price
range of working temperature:
Substrate material:
96% AL2O3 ceramic substrate
Conductor material:
Resistance material:
Product description
Table Parameter

Product introduction:

Ceramic thick film circuit boards specially designed for various automobile and motorcycle igniters. These products are suitable for various automobile and motorcycle ignition systems. They are ideal ceramic circuit boards for electronic igniter control modules. They have good reliability and longevity. It has the advantages of long, stable use, convenient installation and welding.



1. Reliable performance, stable input and output characteristics, high precision, low TCR, etc.

2. Provide a stable basic circuit for motors with strict voltage regulation characteristics, with an accuracy of 0.5%

3. It has excellent heat dissipation performance and is suitable for use in the harsh environment of 14 ~ 28V model generators

4. Long service life, good consistency, can be used for various types of imported and domestic generator regulators

5. Good solderability and solder resistance, suitable for high-speed SMT patch processes such as reflow soldering

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Resistance range

0.2Ω 10M Ω

Resistance tolerance

Minimum ±0.5%


Temperature Coefficient of Resistance



±500PPM /℃

100 Ω≤R≤1MΩ

±250PPM /℃

Insulation resistance


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






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


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



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


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


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