ECA 186-2E-1978 Passive Electronic Component Parts Test Methods for Method 2 Moisture Resistance (Cycling).pdf

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1、f EIA 18b-2E 78 W 3234b00 0028582 L W -. .- L, 3 a w a I ANSI/EIA RS-186-E-78 Approved October 27,1978 EIA STANDARD I (o 00 VI a STANDARD TEST METHODS FOR PASSIVE ELECTRONIC COMPONENT BARTS i RSm186.2E EIA 186-2E 78 m 3234600 0028586 9 m RS-186-2E Page 3 e 2.6 2.7 3, 3.1 3.2 3.3 3.4 3.5 3.6 Controll

2、ed Conditions - In order to insure the temperature and humidity are controlled within the Emits of the specification the instrumentation accuracy should be I1“C on temperature and 41% RH on moisture. The water utilized to produce the atmosphere should be conditioned bj an agpropriate method to assur

3、e consistently pure water with a pH value between 6.0 and 7.2 at 23 C (73 P). Final Measurements (to be taken per Paragraph 2.7.1 unless otherwise specified). 2.7.1 2.7.2 2.7.3 After Humidity - After the final cycle measurements shall be made within a period of 1 to 2 hours after removal from the hu

4、midity chamber. During the final measurements, the specimens shall not be subjected to any means of artificial drying. At High Humidity - If measurements at high humidity are specified in the individual specifica- tion, upon completion of Step 6 (Figure 1) of the final cycle, the specimens shall be

5、maintained at a temperature of 25 +2“C(77 k3.6“F) and a relative humidity of 90 to 95% for a period of 1% to 3% hours, after which the measurements specified shall be made in the chamber. After Drying-Period - If measurements after a drying period are specified then following Step 6 of the final cyc

6、le the specimens shall be conditioned at a temperature of 25 +2“C(77 k3.6“F) and a relative humidity of 50 +5% for a period of twenty-four hours, after which the measure- ments specified in the individual specification shall be made. SUMMARY The following details shall be specified in the individual

7、 specification: Mounting, if additional mounting requirements are necessary. Initial measurements (2.2). Polarization and load. 3.3.1 3.3.2 Exposure duration, number of cycles (2.5) if other than 10 cycles. Details of any low-temperature or vibration subcycling, if applicable (2.3). Final measurements (2.7). Magnitude and points of application of polarizing voltage, if applicable (2.4). Magnitude of loading voltage, if applicable (2.4).