i * 1.5 WATT ZENER DIODE mm 2302554 0000543 OeT MCI LEADLESS PACKAGE FOR SURFACE MOUNT C D L L6485 DOUBLE PLUG CONSTRUCTION thru METALLURGICALLY BONDED C D L L649 ] COMPENSATED DEVICES INC b3E 6 MAXIMUM RATINGS Operating Temperature: -65C to +175C Storage Temperature: -65C to +200C DC Power Dissipation: 1.5 watts @ 25C Power Derating: 1OmW/PC above 25C Forward Voltage @ 200mA = 1.0 volts maximum G Fmd pete tho ELECTRICAL CHARACTERISTICS @ 25C, unless otherwise specified. oa NOMINAL MAXIMUM MAXIMUM ZENER ZENER ZENER MAXIMUM REVERSE KNEE col VOLTAGE TEST IMPEDANCE LEAKAGE IMPEDANCE TVPE Vz @ Iz7 CURRENT 27 CURRENT 27K @ Ik NO. (Note 1) zr (Note 2) iR@ VR (Note 2) VOLTS mA OHMS uA VOLTS OHMS mA CDLL6485 33 76 10 50 10 400 10 CDLL6486 36 69 10 50 10 400 1.0 CDLL6487 39 64 9 35 10 400 10 CDLL6488 43 58 9 5 10 400 10 CDLL6489 a7 53 8 4 10 500 10 CDLL6490 51 49 7 1 10 500 | 10 FIGURE 1 CDLL6491 56 45 5 05 20 | 600 10 CASE: 00-213AB, Hermetically NOTE 1 The CDI type numbers shown above have a standard tolerance of sealed glass case. (MELF, LL41) + 5% of the nominal Zener voltage. Nominal zener voltage is measured : with the device junction in thermal equilibrium and the temperature of LEAD FINISH: = Tin/Lead the end cap of the case equalling 30C + 2C. . THERMAL RESISTANCE: Junction to NOTE 2 Zener impedance is derived by superimposing on Izt or Izk, a GOHz END CAP = 100 GW maximum rms a.c. current equal to 10% of Izt or Izk. POLARITY: Diode to be operated with the banded (cathode) end positive with respect to the opposite end. WEIGHT: 0.2 grams (Typical) MOUNTING POSITION: = Any. MOUNTING SURFACE SELECTION: The Axial Coefficient Of Expansion (COE) Of this Device is Approx- imately +6PPM/C. The COE of the Mounting Surface System Should Be Selected To Provide A Suitable Match With This Device. we COMPENSATED DEVICES INCORPORATED 166 TREMONT STREET, MELROSE, MASSACHUSETTS 02176 101 PHONE (617) 665-1071 FAX (617) 665-7379 COMPENSATED DEVICES INC b3E D MM 2302554 0000544 Thb MCDI COLL6485 thru COLL6491 FIGURE 2 c 15 S s Oo GB 10 BE ~< BE B 05 oO vo oa. NX 0 25 50 75 100 125 150 175 TA, Ambient temperature (C) POWER DERATING CURVE FIGURE 3 1000 500 400 300 200 100 = 50 40 70 10;-- ZENER IMPEDANCE Zz1 (OHMS) hw ew 1 a a 2 5 1 2 5 10 20 50 10 OPERATING CURRENT Izt (mA) TYPICAL CHANGE OF ZENER IMPEDANCE WITH CHANGE IN OPERATING CURRENT FOR NOMINAL VOLTAGES SHOWN 102