Datasheet

11
8. Test Report
8.1 Experimental purposes
1) Thermal performance of Grove – Solid State Relay（S208T02）
2) Limit load current of Grove – SSR
3) Measures to improve the limit load current
8.2 Experimental Principle
By recording SSR chip temperature at different current and different time points, analysis the data and draw
conclusions.
Figure 1 is screenshot from S208T02 datasheet, we can see that at different heat sink and different
temperature, SSR’s current is different.
There needs a temperature sensor to get the temperature of the chip. I use DS18B20 whose detection range
is -25-125℃ to meet the requirements.
Figure 2 shows the experimental equipment and installation plans, the temperature sensor is tied to the
right side of the heat sink, to make the temperature that 18b20 detects as close as possible to the heat sink
temperature, smear between the sensor and the heat sink thermal plastic. Between the heat sink and SSR
coated thermal plastic. Therefore, the temperature of the 18b20 is equal to the temperature of SSR.
8.3 Experimental data
Table1: time vesus temperature