1N8211N829A-1
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1N821 thru 1N829A-1 DO-7
6.2 & 6.55 Volt Temperature Compensated
Zener Reference Diodes
SCOTTSDALE DIVISION
DESCRIPTION APPEARANCE
The popular 1N821 thru 1N829 series of Zero-TC Reference Diodes
DO-7
provides a selection of both 6.2 V and 6.55 V nominal voltages and
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temperature coefficients to as low as 0.0005%/ C for minimal voltage
change with temperature when operated at 7.5 mA. These glass axial-
leaded DO-7 reference diodes are also available in JAN, JANTX, JANTXV,
and JANS military qualifications. Microsemi also offers numerous other
Zener Reference Diode products for a variety of other voltages up to 200 V.
IMPORTANT: For the most current data, consult MICROSEMIs website: 1N8211N829A-1
WWW.Microsemi .COM
1N821 thru 1N829A-1 DO-7
6.2 & 6.55 Volt Temperature Compensated
Zener Reference Diodes
SCOTTSDALE DIVISION
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*ELECTRICAL CHARACTERISTICS @ 25 C, unless otherwise specified
VOLTAGE
MAXIMUM
EFFECTIVE
ZENER ZENER TEMPERATURE
MAXIMUM
ZENER
TEMPERATURE
VOLTAGE TEST STABILITY
JEDEC
REVERSE
IMPEDANCE
COEFFICIENT
TYPE NUMBER (Note 1 and 4) CURRENT (V MAX)
ZT
(Note 2) CURRENT
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(Note 1, 5 & 6) V @ I I -55 C to +100 C
Z ZT ZT VZ
Z @ I
ZT ZT I @ 3 V
R
(Note 3 and 4)
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VOLTS mA OHMS A mV %/ C
1N821 5.9 6.5 7.5 15 2.0 96 0.01
1N821A 5.9 6.5 7.5 10 2.0 96 0.01
1N822 5.9 6.5 7.5 15 2.0 96 0.01
1N823 5.9 6.5 7.5 15 2.0 48 0.005
1N823A 5.9 6.5 7.5 10 2.0 48 0.005
1N824 5.9 6.5 7.5 15 2.0 48 0.005
1N825 5.9 6.5 7.5 15 2.0 19 0.002
1N825A 5.9 6.5 7.5 10 2.0 19 0.002
1N826 6.2 6.9 7.5 15 2.0 20 0.002
1N827 5.9 6.5 7.5 15 2.0 9 0.001
1N827A 5.9 6.5 7.5 10 2.0 9 0.001
1N828 6.2 6.9 7.5 15 2.0 10 0.001
1N829 5.9 6.5 7.5 15 2.0 5 0.0005
1N829A 5.9 6.5 7.5 10 2.0 5 0.0005
*JEDEC Registered Data.
Double Anode; electrical specifications apply under both bias polarities.
NOTES:
1. Add a -1 suffix for internal metallurgical bond. When ordering devices with tighter tolerances than specified for the V voltage nominal of
Z
6.35 V, add a hyphened suffix to the part number for desired tolerance, e.g. 1N827-1-2%, 1N829-1-1%, 1N829A-1%, 1N829A-1-1%, etc.
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2. Zener impedance measured by superimposing 0.75 mA ac rms on 7.5 mA dc @ 25 C.
3. The maximum allowable change observed over the entire temperature range i.e., the diode voltage will not exceed the specified mV
change at discrete temperature between the established limits.
4. Voltage measurements to be performed 15 seconds after application of dc current.
5. 1N821, 1N823, 1N825, 1N827, and 1N829 also have qualification to MIL-PRF-19500/159 by adding the JAN, JANTX, JANTXV, or
JANS prefix to part numbers as well as the -1 suffix; e.g. JANTX1N827-1, JANTXV1N829-1, etc.
6. Designate Radiation Hardened devices with RH prefix instead of 1N, e.g. RH829A instead of 1N829A.
GRAPHS
The curve shown in Figure 1 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
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+/-0.005%/ C. To obtain the typical Temperature Coefficient
limits for this same diode operated at a current of 6.0mA, the
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new TC limits (%/ C) can be estimated using the graph in
FIGURE 1.
At a test current of 6.0mA the change in Temperature Coefficient
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(TC) is approximately 0.0006%. C. The algebraic sum of +/-
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0.005% C and 0.0006%/ C gives the estimated limits of
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+0.0044%/ C and -0.0056%/ C.
FIGURE 1
TYPICAL CHANGE OF TEMPERATURE COEFFICIENT
WITH CHANGE IN OPERATING CURRENT.
Copyright 2003
Microsemi
Page 2
10-27-2003 REV C
Scottsdale Division
8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503
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Change in temperature coefficient (%/ C)
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Change in temperature coefficient (mV/ C)