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: -65C to +175C DC Power Dissipation: 500mW @ +50C Power Derating: 4 mW / C above +50C REVERSE LEAKAGE CURRENT lR = 2 A @ 25C & VR = 3 Vdc Electrical Specifications @ +25 C (Unless Otherwise Specified) TYPE Voltage Current (Note 1) Voltage Temperature Stability 3V ZT Number Vz @ IZT IZT ZZT -55 to +100C (Note1) Volts mA Ohms (Note 2) mV %/C 1N821UR 1N821AUR 1N822UR 1N823UR 1N823AUR 1N824UR 1N825UR 1N825AUR 1N826UR 1N827UR 1N827AUR 1N828UR 1N829UR 1N829AUR 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 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 15 10 15 15 10 15 15 10 15 15 10 15 15 10 96 96 96 48 48 48 19 19 20 9 9 10 5 5 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 Normal Zener Zener Test Maximum Zener Impedance Effective Temperature Coefficient 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 D CASE: DO - 213AA, Hermetically sealed glass case. (MELF, SOD-80, LL34) LEAD FINISH: Tin / Lead G F G1 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: 2/2/2009 New Product 1 1N821UR thru 1N829AUR, 1N821UR-1 thru 1N829AUR-1 CHANGE IN TEMPERATURE COEFFICIENT ( %/C) Graphs 600 500 400 300 200 100 0 25 50 100 150 175 TL, Lead temperature (C) 3/8" from body ZENER IMPEDANCE ZZT (OHMS) Pd, Rated Power Dissipation (mW) 500 100 50 10 5 +.0010 +.0005 0 -.0005 -.0010 5.5 6.0 6.5 7.0 7.5 8.0 8.5 9.0 9.5 OPERATING CURRENT lZT (mA) POWER DERATING CURVE 1 5 6 7 8 9 TYPICAL CHANGE OF TEMPERATURE COEFFICIENT WITH CHANGE IN OPERATING CURRENT 10 OPERATING CURRENT lZT (mA) ZENER IMPEDANCE VS. OPERATING CURRENT Aeroflex / Metelics, Inc. 975 Stewart Drive, Sunnyvale, CA 94085 Tel: (408) 737-8181 Fax: (408) 733-7645 ISO 9001: 2008 certified companies 54 Grenier Field Road, Londonderry, NH 03053 Tel: (603) 641-3800 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 www.aeroflex.com/metelics metelics-sales@aeroflex.com 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. Revision Date: 2/2/2010 Our passion for performance is defined by three attributes represented by these three icons: solution-minded, performance-driven and customer-focused.