1、JEDEC STANDARD Conditions for Measurement of Diode Static Parameters JESD32O-A (Revision of EIA-320) DECEMBER 1992 (Reaffirmed: APRIL 1999, APRIL 2002) JEDEC SOLID STATE TECHNOLOGY ASSOCIATION NOTICE JEDEC standards and publications contain material that has been prepared, reviewed, and approved thr
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9、 license agreement. For informatioq contact: JEDEC Solid State Technology Association 2500 Wilson Boulevard Arlingtq Virginia 2220 1 - 3 8 34 or call (703) 907-7559 EIA-3 2 O -A Page 1 CONDITIONS FOR MEASUREMENT OF DIODE BTATIC PARAMETERS (From Standards Proposal No. 2720-A, formulated under the cog
10、nizance of JC-22.4 Subcommittee on Signal and Regulator Diodes) 1. PURPOSE When measuring a temperature-sensitive static parameter under conditions such that the product of the applied voltage and current at the test point produces a power dissipation level that will cause significant heating of the
11、 junction, the measured result may be subject to errors due to thermal or transient effects. In order to avoid such errors, the measurement should be made under defined conditions. 2. STEADY STATE de MEASUREMENTS When making measurements under conditions of steady state dc, a condition of thermal eq
12、uilibrium may be considered to have been achieved if halving the time between the application of power and the taking of the reading causes no error in the indicated results within the required accuracy of measurement. For these purposes very long pulses or step functions may be considered as steady
13、 state dc. When appropriate, the mounting conditions (TL or T,) or the thermal resistance (reference point to ambient RK, or R,) shall be specified. 3. PULSE MEASUREMENTS When a measurement is made under pulse conditions, the point of measurement after the start of the pulse shall be chosen such tha
14、t it is long enough to avoid electrical transient effects, and short enough to avoid heating effects. This can be ensured if halving the minimum selected time, or doubling the maximum selected time, will not produce errors beyond the defined accuracy of the measurement. The pulse measurement may be intended to correlate to a steady state dc measurement, provided that a correlation has been established.
