DIGITRON SEMICONDUCTORS
1N821 – 1N829A
DO-35 CASE
MAXIMUM RATINGS
1N821 – 1N829A
Operating and storage temperature
DC power dissipation
Derating solder temperatures
-65° to +175°C
500mW @ 25°C
4 mW/°C above 25°C
TEMPERATURE COMPENSATED
ZENER REFERENCE DIODE
6.2 & 6.55 Volt
ELECTRICAL CHARACTERISTICS
Part number
Zener
voltage
V
Z
@ l
ZT
VOLTS
1N821
1N821A
1N822†
1N823
1N823A
1N824†
1N825
1N825A
1N826
1N827
1N827A
1N828
1N829
1N829A
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
Maximum zener
impedance
(Note 3 and 4)
Z
ZT
(Note 1 and 4)
Zener test
current
l
ZT
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
Voltage
temperature
stability
(ΔV
ZT
MAX)
-55°C to +100°C
(Note 3 and 4)
Effective temperature
coefficient
α
VZ
%/°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
OHMS
15
10
15
15
10
15
15
10
15
15
10
15
15
10
mV
96
96
96
48
48
48
19
19
20
9
9
10
5
5
†
Double Anode; electrical specifications apply under both bias polarities.
NOTES:
1.
When ordering devices with tighter tolerances than specified, use a nominal VZ voltage of 6.2 V.
2.
Measured by superimposing 0.75mA ac rms on 7.5mA 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 any discrete temperature between the established limits.
4.
Voltage measurements to be performed 15 seconds after application of DC current.
MECHANICAL CHARACTERISTICS
CASE:
MARKING:
POLARITY:
Hermetically sealed glass, DO-35
Body painted, alpha numeric
Cathode Band
Inches
Min
BD
BL
LD
LL
-
-
0.018
1.000
Max
0.080
0.175
0.022
-
Min
-
-
0.457
25.400
Dimensions
Millimeters
Max
2.030
4.440
0.559
-
144 Market Street
Kenilworth NJ 07033 USA
phone +1.908.245-7200
fax +1.908.245-0555
sales@digitroncorp.com
www.digitroncorp.com
Rev. 20120802
DIGITRON SEMICONDUCTORS
Power derating curve
Typical change of temperature coefficient with change in operating current
Typical change of zener voltage with change in operating current
This curve 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. This curve can also be used to estimate total voltage regulation under conditions of both
varying temperature and current.
Available Non-RoHS (standard) or RoHS compliant (add PBF suffix).
Available as “HR” (high reliability) screened per MIL-PRF-19500, JANTX level. Add “HR” suffix to base part number.
144 Market Street
Kenilworth NJ 07033 USA
phone +1.908.245-7200
fax +1.908.245-0555
sales@digitroncorp.com
www.digitroncorp.com
Rev. 20120802
Embedded System
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