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1N3345B bảng dữ liệu(PDF) 3 Page - Microsemi Corporation |
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1N3345B bảng dữ liệu(HTML) 3 Page - Microsemi Corporation |
3 / 3 page 50 WATT ZENER DIODES Microsemi Scottsdale Division 8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503 Page 3 Copyright 2003 11-12-2003 REV A SCOTTSD A L E DIVISION 1N3305 thru 1N3350B and 1N4549B thru 1N4556B See further notes on following page See further notes on following page NOTES: 1. When using JEDEC numbers an R suffix should be used to signify reversed polarity. The suffixes A and B indicate tolerances NOTES: 1. When using JEDEC numbers an R suffix should be used to signify reversed polarity. The suffixes A and B indicate tolerances of 10% and 5% respectively. No suffix or just R denotes +/-20% tolerance. Example: 1N3319RB is a REVERSED polarity, of 10% and 5% respectively. No suffix or just R denotes +/-20% tolerance. Example: 1N3319RB is a REVERSED polarity, 20 volt unit having a +/-5% tolerance on Zener Voltage. 20 volt unit having a +/-5% tolerance on Zener Voltage. 2. Zener Voltage ( VZ) is measured with junction in thermal equilibrium with 30 oC stud temperature. 2. Zener Voltage ( VZ) is measured with junction in thermal equilibrium with 30 oC stud temperature. 3. The Zener impedance is derived from the 60 cycle ac voltage, which results when an ac current having an rms value equal to 10% of the dc zener current (IZT or IZK) is superimposed on IZT or IZK. Zener impedance is measured at 2 points to ensure a sharp knee on the breakdown curve and to eliminate unstable units. A curve showing the variation of zener impedance vs. zener current for three representative types is shown in Figure 2. Also see Microsemi MicroNote 202. 3. The Zener impedance is derived from the 60 cycle ac voltage, which results when an ac current having an rms value equal to 10% of the dc zener current (IZT or IZK) is superimposed on IZT or IZK. Zener impedance is measured at 2 points to ensure a sharp knee on the breakdown curve and to eliminate unstable units. A curve showing the variation of zener impedance vs. zener current for three representative types is shown in Figure 2. Also see Microsemi MicroNote 202. OUTLINE AND CIRCUIT Stud Temperature oC FIGURE 1 Power Derating Curve FIGURE 2 Typical Zener Impedance vs. Zener Current PACKAGE DIMENSIONS All Dimensions in: INCH mm |
Số phần tương tự - 1N3345B |
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Mô tả tương tự - 1N3345B |
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