High-reliability discrete products
and engineering services since 1977
FEATURES
1N821-1N829A
TEMPERATURE COMPENSATED ZENER
REFERENCE DIODE
Available as “HR” (high reliability) screened per MIL-PRF-19500, JANTX level. Add “HR” suffix to base part number.
Available as non-RoHS (Sn/Pb plating), standard, and as RoHS by adding “-PBF” suffix.
MAXIMUM RATINGS
Operating and storage temperature range
DC power dissipation
Solder temperatures
-65°C to +175°C
500mW @ T
L
= 25°C and maximum current l
ZM
OF 70mA.
For optimum voltage-temperature stability, l
Z
= 7.5mA
(less than 50 mW in dissipated power)
260°C for 10 s (max)
ELECTRICAL CHARACTERISTICS
(T
A
= 25°C unless otherwise specified)
Part number
Zener voltage
(Note 1 and 4)
V
Z
@ l
ZT
VOLTS
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
Maximum zener
impedance
(Note 2)
Z
ZT
@ l
ZT
Maximum
reverse
current
l
R
@ 3V
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
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
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
†
Double Anode; electrical specifications apply under both bias polarities.
NOTES:
1.
Add a “-1” suffix for internal metallurgical bond.
2.
Zener impedance measured by superimposing 0.75 mA 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
discrete temperature between the established limits.
4.
Voltage measurements to be performed 15 seconds after application of dc current.
Rev. 20160114
High-reliability discrete products
and engineering services since 1977
MECHANICAL CHARACTERISTICS
Case
Marking
Polarity
DO-7
Body painted, alpha numeric
Cathode Band
1N821-1N829A
TEMPERATURE COMPENSATED ZENER
REFERENCE DIODE
Rev. 20160114
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