1N3821A-1 THRU 1N3828A-1 AVAILABLE IN JAN, JANTX AND JANTXV 1N3821A thru 1N3828A and PER MIL-PRF-19500/115 1N3821A-1 thru 1N3828A-1 1 WATT ZENER DIODE DOUBLE PLUG CONSTRUCTION METALLURGICALLY BONDED MAXIMUM RATINGS Operating Temperature: -65C to +175C Storage Temperature: -65C to +175C DC Power Dissipation: 1 watt T = 95C L Power Derating: 12.5 mW / C above T = 95C L Forward Voltage 200mA = 1.2 volts maximum ELECTRICAL CHARACTERISTICS 25C CDI NOMINAL ZENER MAX. DC TYPE ZENER TEST MAXIMUM ZENERIMPEDANCE ZENER MAX. REVERSE NUMBER VOLTAGE CURRENT CURRENT LEAKAGE CURRENT V 1 1 Z 1 Z 1 1 l V Z ZT ZT ZT ZT ZK ZK=1mA ZM R R (NOTE 1) (NOTE 3) (NOTE 2) VOLTS mA OHMS OHMS mA A VOLTS 1N3821 3.3 76 10 400 276 100 1 1N3821A 3.3 76 10 400 276 100 1 FIGURE 1 1N3822 3.6 69 10 400 252 75 1 1N3822A 3.6 69 10 400 252 75 1 DESIGN DATA 1N3823 3.9 64 9 400 238 25 1 1N3823A 3.9 64 9 400 238 25 1 1N3824 4.3 58 9 400 213 5 1 CASE: Hermetically sealed glass 1N3824A 4.3 58 9 400 213 5 1 case, DO41. 1N3825 4.7 53 8 500 194 5 1 1N3825A 4.7 53 8 500 194 5 1 LEAD MATERIAL: Copper clad steel 1N3826 5.1 49 7 550 178 3 1 1N3826A 5.1 49 7 550 178 3 1 LEAD FINISH: Tin / Lead 1N3827 5.6 45 5 600 162 3 2 1N3827A 5.6 45 5 600 162 3 2 1N3828 6.2 41 2 700 146 3 3 THERMAL RESISTANCE: (R ): OJEC 1N3828A 6.2 41 2 700 146 3 3 80 C/W maximum at L = .375 inch THERMAL IMPEDANCE: (Z ): 15 OJX C/W maximum POLARITY: Diode to be operated with NOTE 1 No suffix = + 10% tolerance on nominal Zener voltage, suffix A signifies +5%, suffix C the banded (cathode) end positive. signifies + 2%, suffix D signifies + 1%. NOTE 2 Zener impedance is derived by superimposing on 1 A 60Hz rms a.c. current equal to ZT MOUNTING POSITION: Any. 10% of 1 ZT. NOTE 3 Zener voltage is measured with the device junction in thermal equilibrium at an ambient temperature of 25C + 3C. 6 LAKE STREET, LAWRENCE, MASSACHUSETTS 01841 PHONE (978) 620-2600 FAX (978) 689-0803 WEBSITE: 1N3826A 1N3821A thru 1N3828A and 1N3821A-1 thru 1N3828A-1 FIGURE 2 1000 800 600 400 200 0 0 25 50 75 100 125 150 175 T , Lead temperature (C), 3/8 from body L POWER DERATING CURVE 1000 100 1N3822A 10 1N3829A 1 .1 1.0 10 100 OPERATING CURRENT l (mA) ZT FIGURE 3 ZENER IMPEDANCE VS. OPERATING CURRENT 30 Pd, Rated Power Dissipation (mW) Z , Zener Impedance (OHMS) ZT