Epoxy coated temp sensor
- Rating
| 3-1) Rated zero-power resistance |
R25 : 10kΩ ±1% (at 25℃) |
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| 3-2) B value. |
B25/50: 3,950K ±1% |
*The B value is calculated using the zero-power resistance values
measured at 25 ℃and 50℃. |
| 3-3) Dissipation factor. |
:Approx.3.7 mW/℃(in air) |
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| 3-4) Thermal time constant. |
:Approx. 10.0 s (in air) |
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| 3-5) Maximum power rating. |
: 3.5 mW (at 25℃) |
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| 3-6) Category temperature range |
: -30 ~ 105 ℃ |
(=Operating temperature range) |
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- Insulationresistance
Insulation resistance shall be more than 100 MΩ which is measured at
DC500V between film area and terminals.
5) Climatic tes
5-1) Dry Heat
After the test samples were exposed in air at 90 ±2 ℃ for 1,000 hours, the change ratio of the rated zero-power resistance shall be within ±1% of the initial value.
5-2) Damp heat
After the test samples were exposed in the humidity of 95% at 40 ±2℃ for 1,000 hours, the change ratio of the rated zero-power resistance shall be within ±1% of the initial value.
5-3) Cold
After the test samples were exposed in air at –55 ±3℃ for 1,000 hours, the change ratio of the rated zero-power resistance shall be within ±1% of the initial value.
5-4) Loading
After DC 1mA current was applied to the test samples in the temperature of 40 ±2℃ and the humidity of 95% for 1,000 hours, the change ratio of the rated zero-power resistance shall be within ±2% of the initial value.
5-5) Change of temperature
One cycle of the change of temperature shall be carried out in the order of the following conditions.
.Room ambient temperature.( Initial value)
.At –25 ±3℃, for 30 minutes.
.Room ambient temperature, for 3 minutes.
.At + 90 ±2℃, for 30 minutes.
.Room ambient temperature, for 3 minutes.
After the 100 cycles of this process, the change ratio of the rated
zero-power resistance shall be within ±1% of the initial value.
6) Mechanical characteristics
6-1) Resistance to soldering heat
The terminals shall be dipped in to a soldering bath having a temperature of 260 ±5℃ to a point 2.0 mm from the body and then be held there for 5 ±1s, the change ratio of the rated zero-power resistance shall be within ±1% of the initial value.
6-2) Solderability
After dipping the terminal to a depth in a soldering bath of 235 ±5℃ for 2 ±0.5s .Approximately 90% of terminals should be covered with solder uniformly.
6-3) Free fall
After three times fall to a maple board from 0.75 m high, there shall be no visible damage and the change ratio of the rated zero-power resistance shall be within ±1% of the initial value.
6-4) Robustness of terminations
After 1N loading weight for 10 ±1s was applied to the wire terminations, there shall be no visible damage and the change ratio of the rated zero-power resistance shall be within ±1% of the initial
value.
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