• AVAILABLE IN JAN, JANTX, PER MIL-PRF-19500/406 1N6485 THRU 1N6491 AND 1N4460 AND 1N4461 JANTXV, AND JANS • 1.5 WATT ZENER DIODES • NON CAVITY CONSTRUCTION • METALLURGICALLY BONDED 0.060/0.085 MAXIMUM RATINGS 1.52/2.16 Operating Temperature: -65°C to +175°C Storage Temperature: -65°C to +200°C Power Dissapation: 1.5W @ TA=+25°C Power Derating: 10mW/°C above TA=+25°C Forward Voltage: 1.0 V dc @ IF=200mA dc 1.5 V dc @ IF=1A dc POLARITY BAND (CATHODE) 0.125/0.160 3.18/4.06 0.800 20.32 0.028/0.032 0.71/0.81 ELECTRICAL CHARACTERISTICS @ 25°C, unless otherwise specified TYPE ZENER TEST DYNAMIC KNEE TEST REVERSE TEST MAXIMUM VZ (REG) MAXIMUM VOLTAGE CURRENT IMPEDENCE IMPEDENCE CURRENT CURRENT VOLTAGE CURRENT V VZ SURGE ±5% IZT (MAX.) (MAX.) IZK (MAX.) VR IZM VZ ZZT@IZT ZZK@IZT IR@VR µA VOLTS mA OHMS OHMS mA VOLTS MA VOLTS AMPS FIGURE 1 1N6485 1N6486 1N6487 1N6488 3.3 3.6 3.9 4.3 76.0 69.0 64.0 58.0 10 10 9 9 400 400 400 400 1.0 1.0 1.0 1.0 50 50 35 5.0 1.0 1.0 1.0 1.0 433 397 366 332 .90 .80 .75 .70 4.2 3.9 3.6 3.3 DESIGN DATA 1N6489 1N6490 1N6491 1N4460 1N4461 4.7 5.1 5.6 6.2 6.8 53.0 49.0 45.0 40.0 37.0 8 7 5 4 2.5 500 500 600 200 200 1.0 1.0 1.0 1.0 1.0 4.0 1.0 0.5 10.0 5.0 1.0 1.0 2.0 3.72 4.08 304 280 255 230 210 .60 .50 .40 .35 .30 3.0 2.7 2.5 2.3 2.1 CASE: Hermetically sealed, Glass “A” Body per MIL-PRF- 19500/406 D-5A NOTE: Zener voltage is measured with the device junction in thermal equilibrium at an ambient temperature of 25°C ± 3°C. LEAD MATERIAL: Copper clad steel LEAD FINISH: Tin / Lead THERMAL RESISTANCE: (ROJL): 42 °C/W maximum at L = .375 THERMAL IMPEDANCE: (ZOJX): 4.5 °C/W maximum POLARITY: Diode to be operated with the banded (cathode) end positive. MOUNTING POSITION: Any 6 LAKE STREET, LAWRENCE, MASSACHUSETTS 01841 PHONE (978) 620-2600 FAX (781) 689-0803 WEBSITE: http://www.microsemi.com 71 1N6485 1N6491 thru and 1N4460 and 1N4461 Pd. Power Dissipation (WATTS) FIGURE 2 1.5 1.0 O.5 0 25 50 75 100 125 150 TA, AMBIENT TEMPERATURE (°C) 175 POWER DERATING CURVE 1000 500 400 300 3.3 VOLT ZENER IMPEDANCE ZZT (OHMS) 200 100 5.1 VOLT 50 40 30 20 10 5 4 6.2 VOLT 3 2 1 .1 .2 .5 1 2 5 10 20 50 100 OPERATING CURRENT IZT (mA) FIGURE 3 ZENER IMPEDANCE VS. OPERATING CURRENT 72