1
Revision Date: 2/2/2009
New Product
Temperature Compensated
Zener Reference Diode Series
1N821UR thru 1N829AUR & 1N821UR-1 thru 1N829UR-1
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
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
Normal Zener Maximum Zener Voltage Temperature Effective
JEDEC Zener Test Impedance Stability Temperature
TYPE Voltage Current (Note 1) 3VZT Coefficient
Number Vz@IZT IZT ZZT -55° to +100°C
(Note 2)
(Note1) Volts mA Ohms mV %/°C
1N821UR 5.9—6.5 7.5 15 96 0.01
1N821AUR 5.9—6.5 7.5 10 96 0.01
1N822UR † 5.9—6.5 7.5 15 96 0.01
1N823UR 5.9—6.5 7.5 15 48 0.005
1N823AUR 5.9—6.5 7.5 10 48 0.005
1N824UR † 5.9—6.5 7.5 15 48 0.005
1N825UR 5.9—6.5 7.5 15 19 0.002
1N825AUR 5.9—6.5 7.5 10 19 0.002
1N826UR 6.2—6.9 7.5 15 20 0.002
1N827UR 5.9—6.5 7.5 15 9 0.001
1N827AUR 5.9—6.5 7.5 10 9 0.001
1N828UR 6.2—6.9 7.5 15 10 0.001
1N829UR 5.9—6.5 7.5 15 5 0.0005
1N829AUR 5.9—6.5 7.5 10 5 0.0005
Electrical Specifications @ +25 ºC (Unless Otherwise Specified)
† Double Anode: Electrical Specifications Apply Under Both Bias Polarities.
NOTE 1: Zener impedance is derived by superimposing on lZT A 60Hz rms a.c. current equal to 10% of lZT.
NOTE 2: 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
LEADED DESIGN DATA
CASE: DO – 213AA, Hermetically sealed glass case.
(MELF, SOD-80, LL34)
LEAD FINISH: Tin / Lead
POLARITY: Cathode end is banded.
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.
D
G
G1
F
S
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Revision Date: 2/2/2010
Aeroflex / Metelics, Inc.
975 Stewart Drive, 54 Grenier Field Road,
Sunnyvale, CA 94085 Londonderry, NH 03053
Tel: (408) 737-8181 Tel: (603) 641-3800
Fax: (408) 733-7645 Fax: (603)-641-3500
Sales: 888-641-SEMI (7364)
Hi-Rel Components
9 Hampshire Street,
Lawrence, MA 01840
Tel: (603) 641-3800
Fax: (978) 683-3264
www.aeroflex.com/metelics-hirelcomponents
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
does not assume any responsibility or liability arising out of the application or use of any
product or service described herein, except as expressly agreed to in writing by Aeroflex;
nor does the purchase, lease, or use of a product or service from Aeroflex convey a license
under any patent rights, copyrights, trademark rights, or any other of the intellectual rights
of Aeroflex or of third parties.
Copyright 2010 Aeroflex / Metelics. All rights reserved.
www.aeroflex.com/metelics metelics-sales@aeroflex.com
ISO 9001: 2008 certified companies
1N821UR thru 1N829AUR, 1N821UR-1 thru 1N829AUR-1
25 50 100 150 175
TL, Lead temperature (C°) 3/8” from body
POWER DERATING CURVE
600
500
400
300
200
100
0
Pd, Rated Power
Dissipation (mW)
5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5
OPERATING CURRENT lZT (mA)
TYPICAL CHANGE OF TEMPERATURE
COEFFICIENT WITH CHANGE IN
OPERATING CURRENT
+.0010
+.0005
0
-.0005
-.0010
CHANGE IN TEMPERATURE COEFFICIENT ( %/°C)
5678910
OPERATING CURRENT lZT (mA)
ZENER IMPEDANCE
VS.
OPERATING CURRENT
500
100
50
10
5
1
ZENER IMPEDANCE ZZT (OHMS)
Graphs