CDLL6485 thru CDLL6491 MAXIMUM RATINGS Operating Temperature: -65C to +175C Storage Temperature: -65C to +175C DC Power Dissipation: 1.5 watts @ 25C Power Derating: 10 mW /C above +25C Forward Voltage @ 200mA = 1.0 volts maximum ELECTRICAL CHARACTERISTICS @ 25C, unless otherwise specified. NOMINAL MAXIMUM MAXIMUM ZENER ZENER ZENER MAXIMUM REVERSE KNEE cor VOLTAGE TEST _ | IMPEDANCE LEAKAGE IMPEDANCE TYPE Vz @1z7 | CURRENT 2zT CURRENT ZzK @ 17K NO. (Note 1) 177 (Note 2) 1p @ VR (Note 2) VOLTS mA OHMS uA VOLTS OHMS mA CDLL6485 3.3 76 10 50 1.0 400 1.0 CDLL6486 36 69 10 50 1.0 400 1.0 CDLL6487 3.9 64 9 35 1.0 400 1.0 CDLL6488 43 58 9 5 1.0 400 1.0 CDLL 6489 47 53 8 5 1.0 500 1.0 CDLL6490 5.1 49 7 1 1.0 500 1.0 CDLL6491 5.6 45 5 0.5 2.0 600 1.0 NOTE 1 The CDI type numbers shown above have a standard tolerance of + 5% of the nominal Zener voltage. Nominal Zener voltage is measured with the device junction in thermal equilibrium at an ambient temperature of 25C + 3C. NOTE 2 Zener impedance is derived by superimposing on Izt or Izk, a 60Hz rms a.c. current equal to 10% of Izt or Izk. 166 TREMONT STREET, MELROSE, MASSACHUSETTS 02176 PHONE (617) 665-1071 FAX (617) 665-7379 WWWSITE: http://www.cdi-diodes.com E-mail: mail @ cdi-diodes.com 115 116 ZENER IMPEDANCE Zzt (OHMS) CDLL6485 thru CDLL6491 Pd. Power Dissipation (WATTS) 1000 500 400 300 200 100 50 40 30 20 10 FIGURE 2 a a N 1.0 oO a 0 25 50 75 100 125 150 8 175 Ta, AMBIENT TEMPERATURE (C) POWER DERATING CURVE 3.3 VOLT 5.1 VOLT 6.2 VOLT 2 5 1 2 5 10 9-20 50 100 OPERATING CURRENT Izr (mA) FIGURE 3 ZENER IMPEDANCE VS. OPERATING CURRENT