1N821(DO35) 查看數據表（PDF） - Microsemi Corporation
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1N821(DO35) Datasheet PDF : 3 Pages
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SCOTTSDALE DIVISION
1N821 thru 1N829A-1 DO-35
6.2 & 6.55 Volt Temperature Compensated
Zener Reference Diodes
GRAPHS
IZ – Operating Current (mA)
FIGURE 2
TYPICAL CHANGE OF TEMPERATURE COEFFICIENT
WITH CHANGE IN OPERATING 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.
IZ – Operating Current (mA)
FIGURE 3
TYPICAL CHANGE OF ZENER VOLTAGE
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.
DIMENSIONS
All dimensions in INCH
mm
Copyright 2003
10-27-2003 REV C
Microsemi
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
Page 3
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