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HSMS-280B-TR1G Datasheet(PDF) 3 Page - AVAGO TECHNOLOGIES LIMITED |
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HSMS-280B-TR1G Datasheet(HTML) 3 Page - AVAGO TECHNOLOGIES LIMITED |
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3 / 10 page  3 Quad Capacitance Capacitance of Schottky diode quads is measured using an HP4271 LCR meter. This instrument effectively isolates individual diode branches from the others, allowing accurate capacitance measurement of each branch or each diode. The conditions are: 20 mV R.M.S. voltage at 1 MHz. Avago defines this measurement as “CM”, and it is equivalent to the capacitance of the diode by itself. The equivalent diagonal and adjacent capacitances can then be calculated by the formulas given below. In a quad, the diagonal capacitance is the capacitance between points A and B as shown in the figure below. The diagonal capacitance is calculated using the follow- ing formula C1 x C2 C3 x C4 CDIAGONAL = _______ + _______ C1 + C2 C3 + C4 C1 C2 C4 C3 A B C The equivalent adjacent capacitance is the capacitance between points A and C in the figure below. This capaci- tance is calculated using the following formula 1 CADJACENT = C1 + ____________ 1 1 1 –– + –– + –– C2 C3 C4 This information does not apply to cross-over quad diodes. SPICE Parameters Parameter Units HSMS-280x BV V75 CJ0 pF 1.6 EG eV 0.69 IBV A E-5 IS A 3.00E-08 N 1.08 RS Ω30 PB V 0.65 PT 2 M 0.5 Cj Rj RS Rj = 8.33 X 10 -5 nT Ib + Is where Ib = externally applied bias current in amps Is = saturation current (see table of SPICE parameters) T = temperature, K n = ideality factor (see table of SPICE parameters) Note: To effectively model the packaged HSMS-280x product, please refer to Application Note AN1124. RS = series resistance (see Table of SPICE parameters) C j = junction capacitance (see Table of SPICE parameters) Linear Equivalent Circuit, Diode Chip |
Similar Part No. - HSMS-280B-TR1G |
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Similar Description - HSMS-280B-TR1G |
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