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MLL826A Datasheet(PDF) 3 Page - Microsemi Corporation |
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MLL826A Datasheet(HTML) 3 Page - Microsemi Corporation |
3 / 3 page 6.2 & 6.55 Volt Temperature Compensated Surface Mount Zener Reference 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 12-19-2003 REV A SCOTTSD A L E DIVISION 1N821UR thru 1N829AUR-1 (or MLL821 thru MLL829-1) GRAPHS IZ – Operating Current (mA) IZ – Operating Current (mA) FIGURE 2 FIGURE 3 TYPICAL CHANGE OF TEMPERATURE COEFFICIENT TYPICAL CHANGE OF ZENER VOLTAGE WITH CHANGE IN OPERATING CURRENT. WITH CHANGE IN OPERATING CURRENT This curve in Figure 3 illustrates the change of diode voltage arising from the effect of impedance. It is in effect an exploded view of the zener operating region of the I-V characteristic. In conjunction with Figure 2, this curve can be used to estimate total voltage regulation under conditions of both varying temperature and current. The curve shown in Figure 2 is typical of the diode series and greatly simplifies the estimation of the Temperature Coefficient (TC) when the diode is operated at currents other than 7.5mA. EXAMPLE: A diode in this series is operated at a current of 7.5mA and has specified Temperature Coefficient (TC) limits of +/-0.005%/ oC. To obtain the typical Temperature Coefficient limits for this same diode operated at a current of 6.0mA, the new TC limits (%/ oC) can be estimated using the graph in FIGURE 2. At a test current of 6.0mA the change in Temperature Coefficient (TC) is approximately –0.0006%. oC. The algebraic sum of +/-0.005%oC and – 0.0006%/ oC gives the new estimated limits of +0.0044%/oC and -0.0056%/oC. PACKAGE DIMENSIONS INCHES MILLIMETERS DIM MIN MAX MIN MAX A 0.063 0.067 1.60 1.70 B 0.130 0.146 3.30 3.70 C 0.016 0.022 0.41 0.55 PAD LAYOUT INCHES mm A .200 5.08 B .055 1.40 C .080 2.03 |
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