1N821 thru 1N829A-1 DO-35
6.2 & 6.55 Volt Temperature Compensated
Zener Reference Diodes
SCOTTSDALE DIVISION
DESCRIPTION
The popular 1N821 thru 1N829A series of Zero-TC Reference Diodes
provides a selection of both 6.2 V and 6.55 V nominal voltages and
temperature coefficients to as low as 0.0005%/
o
C for minimal voltage
change with temperature when operated at 7.5 mA. These glass axial-
leaded DO-35 reference diodes are optionally available with an internal-
metallurgical-bond by adding a “-1” suffix. This type of bonded Zener
package construction is also available in JAN, JANTX, and JANTXV
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
MICROSEMI’s
website:
http://www.microsemi.com
APPEARANCE
WWW .
Microsemi
.C
OM
DO-35
(DO-204AH)
FEATURES
•
•
•
•
JEDEC registered 1N821 thru 1N829 series
Internal metallurgical bond option available by adding
a “-1” suffix
Reference voltage selection of 6.2 V & 6.55 V +/-5%
with further tight tolerance options at lower voltage
1N821, 823, 825, 827 and 829 also have
qualification to MIL-PRF-19500/159 by adding the
JAN, JANTX, or JANTXV prefixes to part numbers a
well as the “-1” suffix; e.g. JANTX1N829-1, etc.
Military surface mount equivalents also available in
DO-213AA by adding UR-1 suffix and the JAN,
JANTX, and JANTXV prefix, e.g. JANTX1N829UR-1
(see separate data sheet)
Also available in DO-7 package including military
qualifications up to JANS (see separate data sheet)
JANS equivalent available in DO-35 via SCD
APPLICATIONS / BENEFITS
•
Provides minimal voltage changes over a broad
temperature range
•
For instrumentation and other circuit designs
requiring a stable voltage reference
•
Maximum temperature coefficient selections available
from 0.01%/ºC to 0.0005%/ºC
•
Tight reference voltage tolerances available with
center nominal value of 6.15 V by adding designated
tolerance such as 1%, 2%, 3%, etc. after the part
number for identification
e.g. 1N827-2%, 1N829A-1-1%, 1N829-1-1%, etc.
•
Flexible axial-lead mounting terminals
•
Nonsensitive to ESD per MIL-STD-750 Method 1020
•
Typical low capacitance of 100 pF or less
•
•
•
MAXIMUM RATINGS
•
•
•
Operating Temperatures: -65
o
C to +175
o
C
Storage Temperatures: -65
o
C to +175
o
C
DC Power Dissipation: 500 mW @ T
L
= 25
o
C and
maximum current I
ZM
of 70 mA. NOTE: For
optimum voltage-temperature stability, I
Z
= 7.5 mA
(less than 50 mW in dissipated power)
Solder Temperatures: 260
o
C for 10 s (max)
•
•
•
•
MECHANICAL AND PACKAGING
CASE: Hermetically sealed glass case. DO-35
(DO-204AH) package
TERMINALS: Leads, tin-lead plated solderable per
MIL-STD-750, Method 2026
MARKING: Part number and cathode band (except
double anode 1N822 and 1N824)
POLARITY: Reference diode to be operated with
the banded end positive with respect to the
opposite end
TAPE & REEL option: Standard per EIA-296 (add
“TR” suffix to part number)
WEIGHT: 0.2 grams.
See package dimensions on last page
•
1N821, A, -1 thru
hru
1N829A-1 DO-35
1N829A-1 DO-35
•
•
•
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 1
1N821 thru 1N829A-1 DO-35
6.2 & 6.55 Volt Temperature Compensated
Zener Reference Diodes
SCOTTSDALE DIVISION
WWW .
Microsemi
.C
OM
*ELECTRICAL CHARACTERISTICS @ 25
o
C, unless otherwise specified
MAXIMUM
ZENER
IMPEDANCE
(Note 2)
Z
ZT
@ I
ZT
MAXIMUM
REVERSE
CURRENT
I
R
@ 3 V
VOLTAGE
TEMPERATURE
STABILITY
(∆V
ZT
MAX)
o
o
-55 C to +100 C
(Note 3 and 4)
JEDEC
TYPE NUMBER
(Note 1 & 5)
ZENER
VOLTAGE
(Note 1 and 4)
V
Z
@ I
ZT
ZENER
TEST
CURRENT
I
ZT
EFFECTIVE
TEMPERATURE
COEFFICIENT
α
VZ
o
1N821
1N821A
1N822†
1N823
1N823A
1N824†
1N825
1N825A
1N826
1N827
1N827A
1N828
1N829
1N829A
VOLTS
5.9 – 6.5
5.9 – 6.5
5.9 – 6.5
5.9 – 6.5
5.9 – 6.5
5.9 – 6.5
5.9 – 6.5
5.9 – 6.5
6.2 – 6.9
5.9 – 6.5
5.9 – 6.5
6.2 – 6.9
5.9 – 6.5
5.9 – 6.5
mA
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
7.5
OHMS
15
10
15
15
10
15
15
10
15
15
10
15
15
10
µA
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
2.0
mV
96
96
96
48
48
48
19
19
20
9
9
10
5
5
%/ C
0.01
0.01
0.01
0.005
0.005
0.005
0.002
0.002
0.002
0.001
0.001
0.001
0.0005
0.0005
*JEDEC Registered Data.
†Double Anode; electrical specifications apply under both bias polarities.
NOTES:
1.
2.
3.
4.
5.
Add a “-1” suffix for internal metallurgical bond. When ordering devices with tighter tolerances than specified for the V
Z
voltage nominal of 6.15 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.
o
Zener impedance is measured by superimposing 0.75 mA ac rms on 7.5 mA dc @ 25 C.
The maximum allowable change observed over the entire temperature range i.e., the diode voltage will not exceed the
specified mV change at any discrete temperature between the established limits.
Voltage measurements to be performed 15 seconds after application of dc current.
1N821, 1N823, 1N825, 1N827, and 1N829 also have qualification to MIL-PRF-19500/159 by adding the JAN,
JANTX, or
JANTXV prefix to part numbers as well as the “-1” suffix; e.g. JANTX1N827-1, JANTXV1N829-1, etc.
1N821, A, -1 thru
1N829A-1 DO-35
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 2
1N821 thru 1N829A-1 DO-35
6.2 & 6.55 Volt Temperature Compensated
Zener Reference Diodes
SCOTTSDALE DIVISION
GRAPHS
Change in temperature coefficient (%/ C)
Change in temperature coefficient (mV/ C)
o
WWW .
Microsemi
.C
OM
o
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%/
o
C. To obtain the
typical Temperature Coefficient limits for this same diode operated at a current of
6.0mA, the new TC limits (%/
o
C) 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%.
o
C. The algebraic sum of +/-0.005%
o
C and –
0.0006%/
o
C gives the new estimated limits of +0.0044%/oC and -0.0056%/oC.
I
Z
– Operating Current (mA)
∆
V
Z
– Change in Zener Voltage (mV)
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.
I
Z
– Operating Current (mA)
DIMENSIONS
1N821, A, -1 thru
hru
1N829A-1 DO-35
1N829A-1 DO-35
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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