1N826

• 1N821-1,1N823-1,1N825-1,1N827-1 AND 1N829-1 AVAILABLE IN JAN, JANTX, JANTXV AND JANS PER MIL-PRF-19500/159 • TEMPERATURE COMPENSATED ZENER REFERENCE DIODES • METALLURGICALLY BONDED • DOUBLE PLUG CONSTRUCTION 1N821 thru 1N829A and 1N821-1 thru 1N829-1 MAXIMUM RATINGS Operating Temperature: -65°C to +175°C 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 = 2µA @ 25°C & VR = 3 Vdc ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise speci½ed. JEDEC TYPE NUMBER ZENER VOLTAGE vz @ I ZT ZENER TEST CURRENT I ZT MAXIMUM ZENER IMPEDANCE (Note 1) Z ZT VOLTAGE TEMPERATURE STABILITY ³V ZT -55° to +100° (Note 2) EFFECTIVE TEMPERATURE COEFFICIENT FIGURE 1 % / °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 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 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 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 DESIGN DATA CASE: Hermetically sealed glass case. DO – 35 outline. LEAD MATERIAL: Copper clad steel. LEAD FINISH: Tin / Lead POLARITY: Diode to be operated with the banded (cathode) end positive. MOUNTING POSITION: Any. † Double Anode: Electrical Speci½cations 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. The maximum allowable change observed over the entire temperature range i.e., the diode voltage will not exceed the speci½ed mV at any discrete temperature between the established limits, per JEDEC standard No. 5. NOTE 2 6 L AKE STREET, LAWRENCE, MASSACHUSETTS 01841 PHONE (978) 620-2600 FAX (978) 689-0803 WEBSITE: http://www.microsemi.com 15 1N821 thru INCLUDING -1 VERSIONS 1N829A 500 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 FIGURE 2 POWER DERATING CURVE 1 5 6 7 8 9 10 OPERATING CURRENT lZT (mA) FIGURE 3 ZENER IMPEDANCE VS. OPERATING CURRENT CHANGE IN TEMPERATURE COEFFICIENT ( %/°C) +.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) FIGURE 4 TYPICAL CHANGE OF TEMPERATURE COEFFICIENT WITH CHANGE IN OPERATING CURRENT 16