The light touch switch should not only be durable in cold weather, but also cold and high temperature resistance. These problems have been solved for you during the test. What is the specific test link? This will also be announced to you, which is divided into five steps below for your detailed understanding.
The welding resistance, cold resistance, temperature resistance and humidity resistance of light touch switch are mainly tested.
1. Welding resistance test:
1. Weldability test:
Method: The welding feet were soaked into the tin pool about 2 mm deep, and the test temperature was about 230 5 C. The holding time was 3 0.5 seconds.
Result: More than 80% of the welded feet will be covered with tin.
2. Welding resistance test:
Method: The temperature of solder in the furnace is controlled at 260. 5 5 and the holding time of over-furnace soldering is 5. 1 seconds (base plate).
When hand welding, the temperature is controlled at 350 +30, and the time is 3 +0.5 seconds, but the abnormal pressure can not be exerted on the welding foot.
Result: The switch has no distortion and can satisfy the electrical performance. The result of applying abnormal pressure is invalid.
2. Cold resistance test:
Method: Place it in the temperature environment of minus 20 (+3 C) for 4 days, then put it in the normal environment, and test it after 30 minutes.
Result: Contact resistance and insulation resistance were all within the standard range, and there was no sign that the performance of the switch was damaged.
3. High temperature resistance test:
Method: The product will be stored for 2 - 3 minutes at 280 30 C, and the handle and resistance will be tested after heat dissipation.
Result: Resistance, springback of acrylic force, shape, etc. showed no signs of damage. Switch performance remains intact
4. Humidity test:
Method: Place it in 40 2 90 - 95% RH environment for 4 days, then put it in normal environment, and test it 30 minutes later.
Result: Contact resistance and insulation resistance were within the standard range, and there was no sign that the performance of the switch was damaged.
V. Temperature Alternating Test
In different temperature environments, the test was carried out after five cycles and then placed in normal environment for 30 minutes.
These are the five steps to test the switch before it leaves the factory. Please understand in detail and realize the quality of our switch.
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