Frontier Electronics Corp. 667 E. COCHRAN STREET, SIMI VALLEY, CA 93065 TEL: (805) 522-9998 FAX: (805) 522-9989 E-mail: [email protected] Web: http://www.frontierusa.com 1WATT MELF ZENER DIODE DL4728A-LFR THRU DL4753A-LFR FEATURES z LOW COST z SMALL SIZE z ROHS SOLDERABLE ENDS .105(2.67) .095(2.41) MECHANICAL DATA z CASE: MELF, DIMENSIONS IN INCHES AND (MILLIMETERS) z TERMINALS: SOLDERABLE PER MIL-STD -202, METHOD 208 z POLARITY: COLOR BAND DENOTES CATHODE z MOUNTING POSITION: ANY z WEIGHT: 0.135 GRAMS .205(5.2) .190(4.8) .022(.60) .018(.46) MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS RATINGS AT 25°C AMBIENT TEMPERATURE UNLESS OTHERWISE SPECIFIED STORAGE AND OPERATING TEMPERATURE RANGE -55 TO + 150°C ELECTRICAL CHARACTERISTICS (TA=25℃ UNLESS OTHERWISE NOTED) VF=1.2V MAX, IF = 200mA FOR ALL TYPES JEDEC TYPE NO NOMINAL ZENER VOLTAGE VZ@ IZT VOLTS 3.3 3.6 3.9 4.3 4.7 5.1 5.6 6.2 6.8 7.5 8.2 9.1 10 11 12 13 15 16 18 20 22 24 27 30 33 36 DL4728A-LF R DL4729A-LF R DL4730A-LF R DL4731A-LF R DL4732A-LF R DL4733A-LF R DL4734A-LF R DL4735A-LF R DL4736A-LF R DL4737A-LF R DL4738A-LF R DL4739A-LF R DL4740A-LF R DL4741A-LF R DL4742A-LF R DL4743A-LF R DL4744A-LF R DL4745A LF NOTE︰SUFFIX "A" FOR ±5﹪ MAXIMUM ZENER IMPEDANCE LEAKAGE CURRENT TEST CURRENT IZT mA ZZT @ IZT OHMS ZZK @ IZK OHMS IZK mA IR μA MAX VR VOLTS 76 69 64 58 53 49 45 41 37 34 31 28 25 23 21 19 17 15.5 14 12.5 11.5 10.5 9.5 8.5 7.5 7.0 10 10 9 9 8 7 5 2 3.5 4 4.5 5 7 8 9 10 14 16 20 22 23 25 35 40 45 50 400 400 400 400 500 550 600 700 700 700 700 700 700 700 700 700 700 700 750 750 750 750 750 1000 1000 1000 1 1 1 1 1 1 1 1 1 0.5 0.5 0.5 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 0.25 100 100 50 10 10 10 10 10 10 10 10 10 10 5 5 5 5 5 5 5 5 5 5 5 5 5 1 1 1 1 1 1 2 3 4 5 6 7 7.6 8.4 9.1 9.9 11.4 12.2 13.7 15.2 16.7 18.2 20.6 22.8 25.1 27.4 DL4728A-LFR THRU DL4753A-LFR SURGE CURRENT @ TA=25℃ Page: 1 IR－mA 1380 1260 1190 1070 970 890 810 730 660 605 550 500 454 414 380 344 304 285 250 225 205 190 170 150 135 125 RATINGS AND CHARACTERISTIC CURVES DL4728A-LFR THRU DL4753A-LFR FIG.1B- Range for Units to 12 to 100 Volts θ VZ, TEMPERATURE COEFFICIENT +10 +8 ( mV/℃) +6 +4 +2 VZ＠IZT RANGE 0 -2 -4 2 3 4 5 6 7 8 9 10 100 70 50 30 20 ( mV/℃) θ VZ, TEMPERATURE COEFFICIENT FIG.1A- Range for Units to 12 Volts +12 10 7 5 3 2 VZ＠IZT RANGE 1 11 12 10 20 30 50 70 100 VZ, ZENER VOLTAGE (VOLTS) VZ, ZENER VOLTAGE (VOLTS) Figure 2. Temperature Coefficients (-55℃to+150℃temperature change;90% of the units are in the ranges indicated.) 125 100 75 50 25 θ 0 0 0.1 0.2 VZ＠IZ V/℃) RESISTANCE (mV/℃/W) 150 ( θ VZ, TEMPERATURE COEFFICIENT +6 JL, JUNCTION TO LEAD THERMAL 175 +4 TA=25℃ +2 20mA 0.01mA 0 1mA -2 NOTE: BELOW 3 VOLTS AND ABOVE 8 VOLTS CHANGES IN ZENER CURRENT DO NOT EFFECT TEMPERATURE COEFFICIENTS -4 3 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 5mA 20mA 10 7 5 100 0VBIAS 50 20 2 10 8 1 4 50%OF BREAKDOWN BIAS 1 1 2 3 5 7 10 20 30 2 5 10 20 50 70 100 VZ, NOMINAL VZ (VOLTS) VZ, ZENER CURRENT (mA) Figure. 7 - Power Temperature Derating Curve 1.25 1.0 0.75 0.5 0.25 0 8 0VBIAS C, CAPACITANCE (PF) 100 70 50 20 7 400 300 200 Tj=25℃ Iz(ms)=0.1Iz(do) f=60hz PD ,MAXIMUM DISSIPATION (WATTS) ZZ DYNAMIC IMPEDANCE (OHMS) 200 6 Figure 4. Effect of Zener Current Figure 3. Typical Thermal Resistance versus Lead Length Iz=1mA 5 VZ, ZENER VOLTAGE (VOLTS) L, LEAD LENGTH TO HEAT SINK (INCHES) 1000 700 500 4 20 40 DL4728A-LFR THRU DL4753A-LFR 60 80 100 120 140 160 TL, LEAD TEMPERATURE (OC) 180 200 Page: 2 50 100