1、JEDEC STANDARD List of Preferred Values for Use on Various Types of Small Signal and Regulator Diodes JESD482-A (Revision of EIA-482) AUGUST 1984 (Reaffirmed: APRIL 1999, APRIL 2002) JEDEC SOLID STATE TECHNOLOGY ASSOCIATION NOTICE JEDEC standards and publications contain material that has been prepa
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9、er of copies through entering int a 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 RS-482-A “ Th i LIST OF PREFERRED VALUES FOR USE ON VARIOUS TYPES OF SMALL SIGNAL AND REGULATOR DIOD
10、ES Standard contains the major technical contents of Inter ti Electro teciin ical Commission Pub1 icat ion #63. If differs from na1 I EC Publication #63 in certain important respects, as given in Appendix A. These differences have been called to the attention of the U.S. Committee of Experts for IEC
11、 Technical Committee 47, and resolution of these differences will be sought in future meetings of TC47.“ RS-482-A Page 1 LIST OF PREFERRED VALUES FOR USE ON VARIOUS TYPES OF SMALL SIGNAL AND REGULATOR DIODES (From Standards Proposal No . 1624, formulated under the cognizance of EIA/JEDEC JC-22.4 Sub
12、committee on Voltage Regulators and Signal Diodes. 1 1.0 INTRODUCTION In the manufacture and application of diodes it is desirable to standardize the nominal values when specifying breakdown voltage for voltage regulator diodes, capacitance for variable capacitor diodes, and peak point current for t
13、unnel diodes. 2.0 SCOPE 2.1 Preferred breakdown voltage values for voltage regulator diodes. 2.2 Preferred values of capacitance for variable capacitor diodes. 2.3. Preferred values of peak point current for tunnel diodes . 3.0 DISCUSSION 3.1 The list shown on page 2 contains preferred nominal value
14、s along with tolerance limits at 5, 10 and 20%. These values should be used as follows: (a) In specification of voltage regulator diode breakdown voltages. (b) As values of capacitance for variable capacitor d i odes. (c) AS values of peak point current for tunnel diodes. 3.2 It should be noted that
15、 the tolerance limits are not in all cases at exactly the 5, 10 or 20% values. These limits have been rounded to avoid gaps in the list of values; as well as to provide for some overlap These values are all considered to be multiplied by 10 where n is a positive or negative integer. Thus, the series
16、 is applicable over all decades. RS-482-A Page 2 Nominal Approx. 5% Values Rounded 10% Values Minimum Maximum Minimum Maximum 1.0 .940 1.060 -90 1.10 1.1 1.040 1.160 1.00 1.20 1.2 1.140 1.270 1*10 1.30 1.3 1.240 1.410 1.15 1.45 1.5 1.38&1 1.580 1.35 l,65 1.6 1.530 1,710 1.45 1.75 1.8 1.680 1,910 1.6
17、0 2.00 2.0 1 . 880 2.120 1.% 2.20 2.2 2.080 2.330 2*0g 2.40 2.4 2.180 2.560 2.15 2.65 2.7 2.510 2.890 2.40 3.00 3.0 3.3 3.6 3.9 4.3 4.7 5.1 5.6 2.800 3-10kI 3.400 3.700 4.000 4.4016 4.800 5.200 3.200 3.500 3.800 4*100 4.600 5.000 5.4pI0 6.000 2.70 3. !J0 3.2 3.50 3.90 4.20 4.60 5.00 3.30 3.60 4.00 4
18、.30 4.70 5.20 5.60 6.20 6.2 5,800 6.600 5.6u 6.8 .8 6.400 7.200 6.10 7.50 7.5 7.000 7.900 6.80 8.20 8.2 7.700 8 . 700 7.40 9.00 9.1 8.500 9.600 8.20 10.00 Rounded 2ff% Valu83 Minimum Maximum -80 1.20 .90 1-30 .95 1.45 1*05 1.55 1.20 1.80 1.30 1.90 1.40 2.20 1.6ff 2.40 1-80 I 6B 1.90 2.90 3,20 2.20 2
19、.40 2.60 2.90 3.1a 3.40 4.10 4.50 3.80 3,6!J 4-0 4.30 4.?0 Ei, 20 5.60 6.10 6.70 5.00 7.4 5.40 8.20 6.00 9.00 9.80 6.60 7.30 10.90 NOTE: i values times inn where n is an integer. s-48 Page 3 APPENDIX A in addition to nominal values provided in IEC Publication #63, RS- 482-A lists the associated mini
20、mum and maximum of each nominal listed for 5%, 10%, and 20% tolerances. All nominals listed for 5% are retained for the 108 and 20% in RC-482-A, whereas IEC #63 deletes select nominals as the tolerances are expanded. It should be noted that the approximated 5% tolerances listed in RS-482-A were copied from existing pro-electron registrations of zener diodes.
