Temperature Compensated
Zener Reference Diode Series
1N821UR thru 1N829AUR & 1N821UR-1 thru 1N829UR-1
Features
•
•
1N821UR-1, 1N823UR-1, 1N825UR-1, 1N827UR-1 and 1N829UR-1
and A versions available in JAN, JANTX, JANTXV, JANS
Metallurgically Bonded, Double Plug Construction
Maximum Ratings
Operating & Storage Temperature: -65°C to +175°C
DC Power Dissipation: 500mW @ +50°C
Power Derating: 4 mW / °C above +50°C
REVERSE LEAKAGE CURRENT
lR = 2 μA @ 25°C & VR = 3 Vdc
Electrical Specifications @ +25 ºC (Unless Otherwise Specified)
JEDEC
TYPE
Number
(Note1)
1N821UR
1N821AUR
1N823UR
1N823AUR
1N825UR
1N825AUR
1N826UR
1N827UR
1N827AUR
1N828UR
1N829UR
1N829AUR
Normal
Zener
Voltage
Vz @ IZT
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
6.2—6.9
5.9—6.5
5.9—6.5
6.2—6.9
5.9—6.5
5.9—6.5
Zener
Test
Current
IZT
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
Maximum Zener
Impedance
(Note 1)
ZZT
Ohms
15
10
15
10
15
10
15
15
10
15
15
10
Voltage Temperature
Stability
3V
ZT
-55° to +100°C
(Note 2)
mV
96
96
48
48
19
19
20
9
9
10
5
5
%/°C
0.01
0.01
0.005
0.005
0.002
0.002
0.002
0.001
0.001
0.001
0.0005
0.0005
Effective
Temperature
Coefficient
NOTE 1:
NOTE 2:
Zener impedance is derived by superimposing on lZT A 60Hz rms a.c. current equal to 10% of lZT.
The maximum allowable change observed over the entire temperature range i.e., the diode voltage will not exceed the
specified mV at any discrete temperature between the established limits, per JEDEC standard No. 5.
Outline Drawing
D
LEADED DESIGN DATA
CASE: DO – 213AA, Hermetically sealed glass case.
(MELF, SOD-80, LL34)
G
F
G1
LEAD FINISH: Tin / Lead
POLARITY: Cathode end is banded.
S
MOUNTING POSITION: Any.
MOUNTING SURFACE SELECTION: The Axial Coefficient of Expansion
(COE) Of this Device is Approximately +6 PPM/°C. The COE of the
Mounting Surface System Should Be Selected To Provide A Suitable
Match With This Device.
Revision Date: 2/5/2013
1
1N821UR thru 1N829AUR, 1N821UR-1 thru 1N829AUR-1
Graphs
CHANGE IN TEMPERATURE COEFFICIENT ( %/°C)
500
+.0010
+.0005
0
-.0005
-.0010
Pd, Rated Power
Dissipation (mW)
600
500
400
300
200
100
0
25
50
100
150
175
ZENER IMPEDANCE ZZT (OHMS)
100
50
10
5
TL, Lead temperature (C°) 3/8” from body
5.5
6.0
6.5
7.0
7.5
8.0
8.5
9.0
9.5
POWER DERATING CURVE
1
5
6
7
8
9
10
OPERATING CURRENT lZT (mA)
OPERATING CURRENT lZT (mA)
TYPICAL CHANGE OF TEMPERATURE
COEFFICIENT WITH CHANGE IN
OPERATING CURRENT
ZENER IMPEDANCE
VS.
OPERATING CURRENT
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Aeroflex / Metelics, Inc. reserves the right to make changes to any products and services
herein at any time without notice. Consult Aeroflex or an authorized sales representative to
verify that the information in this data sheet is current before using this product. Aeroflex
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Revision Date: 2/5/2013
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