• AVAILABLE IN JAN, JANTX, JANTXV AND PER MIL-PRF-19500/406 1N6485US THRU 1N6491US AND 1N4460US AND 1N4461US JANS • 1.5 WATT ZENER DIODES • NON CAVITY CONSTRUCTION • METALLURGICALLY BONDED MAXIMUM RATINGS 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: 1.0V dc @ IF=200mA dc 1.5 V dc @ IF=1A dc 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 (NOM.) IZT (MAX.) (MAX.) IZK (MAX.) VR IZM ±5% ZZT@IZT ZZK@IZT IR@VR µA VOLTS mA OHMS OHMS mA VOLTS MA VOLTS AMPS 1N6485US 1N6486US 1N6487US 1N6488US 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 1N6489US 1N6490US 1N6491US 1N4460US 1N4461US 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 DIM D F G S MILLIMETERS MIN MAX 2.31 2.62 0.48 0.71 4.28 5.08 0.08MIN. INCHES MIN MAX 0.091 0.103 0.019 0.028 0.168 0.200 0.003MIN. FIGURE 1 DESIGN DATA CASE: D-5A, hermetically sealed glass case, per MIL-PRF- 19500/406 LEAD FINISH: Tin / Lead THERMAL RESISTANCE: (ROJEC): 20 °C/W maximum at L = 0 THERMAL IMPEDANCE: (ZOJX): 4.5 °C/W maximum POLARITY: Diode to be operated with the banded (cathode) end positive. MOUNTING SURFACE SELECTION: The Axial Coefficient of Expansion (COE) of this device is approximately + 4PPM / °C. The COE of the Mounting Surface System should be selected to provide a suitable match with this device. 6 LAKE STREET, LAWRENCE, MASSACHUSETTS 01841 PHONE (978) 620-2600 FAX (781) 689-0803 WEBSITE: http://www.microsemi.com 153 1N6485US 1N6491US and 1N4460US and 1N4461US thru 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 154