Formosa MS ZS4728A THRU ZS4753A . 1WATT SURFACE MOUNT ZENER DIODE FEATURES z LOW COST z SMALL SIZE 0.185(4.8) 0.173(4.4) SMA 0.012(0.3) Typ. 0.110(2.8) 0.094(2.4) MECHANICAL DATA z CASE︰SMA z TERMINALS：SOLDERABLE PER MIL-STD -202, METHOD 208 z POLARITY：COLOR BAND DENOTES CATHODE z MOUNTING POSITION：ANY z WEIGHT：0.05 GRAMS 0.165(4.2) 0.150(3.8) 0.067(1.7) 0.060(1.5) 0.040(1.0) Typ. MAXIMUM RATINGS AND ELECTRICAL CHARACTERISTICS RATINGS AT 25°C AMBIENT TEMPERATURE UNLESS OTHERWISE SPECIFIED STORAGE AND OPERATING TEMPERATURE RANGE -55 TO + 150℃ Dimensions in inches and (millimeters) ELECTRICAL CHARACTERISTICS (TA=25℃ UNLESS OTHERWISE NOTED) VF=1.2V MAX, IF = 200mA FOR ALL TYPES NOMINAL MAXIMUM ZENER IMPEDANCE LEAKAGE CURRENT TEST ZENER JEDEC MARKING CURRENT VOLTAGE IR VR ZZT @ IZT ZZK @ IZK IZK IZT TYPE NO CODE VZ@ IZT OHMS OHMS Ma VOLTS μA MAX Ma VOLTS 1 100 1 400 10 76 3.3 Z3V3 ZS4728A 1 100 1 400 10 69 3.6 Z3V6 ZS4729A 1 50 1 400 9 64 3.9 Z3V9 ZS4730A 1 10 1 400 9 58 4.3 Z4V3 ZS4731A 1 10 1 500 8 53 4.7 Z4V7 ZS4732A 1 10 1 550 7 49 5.1 Z5V1 ZS4733A 2 10 1 600 5 45 5.6 Z5V6 ZS4734A 3 10 1 700 2 41 6.2 Z6V2 ZS4735A 4 10 1 700 3.5 37 6.8 Z6V8 ZS4736A 5 10 0.5 700 4 34 7.5 Z7V5 ZS4737A 6 10 0.5 700 4.5 31 8.2 Z8V2 ZS4738A 7 10 0.5 700 5 28 9.1 Z9V1 ZS4739A 7.6 10 0.25 700 7 25 10 Z10 ZS4740A 8.4 5 0.25 700 8 23 11 Z11 ZS4741A 9.1 5 0.25 700 9 21 12 Z12 ZS4742A 9.9 5 0.25 700 10 19 13 Z13 ZS4743A 11.4 5 0.25 700 14 17 15 Z15 ZS4744A 12.2 5 0.25 700 16 15.5 16 Z16 ZS4745A 13.7 5 0.25 750 20 14 18 Z18 ZS4746A 15.2 5 0.25 750 22 12.5 20 Z20 ZS4747A 16.7 5 0.25 750 23 11.5 22 Z22 ZS4748A 18.2 5 0.25 750 25 10.5 24 Z24 ZS4749A 20.6 5 0.25 750 35 9.5 27 Z27 ZS4750A 22.8 5 0.25 1000 40 8.5 30 Z30 ZS4751A 25.1 5 0.25 1000 45 7.5 33 Z33 ZS4752A 27.4 5 0.25 1000 50 7.0 36 Z36 ZS4753A NOTE︰SUFFIX "A" FOR ±5﹪ 0.040 (1.0) Typ. SURGE CURRENT @ TA=25℃ 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 FIG.1A- Range for Units to 12 Volts θVZ, TEMPERATURE COEFFICIENT ( mV/℃) θVZ, TEMPERATURE COEFFICIENT ( mV/℃) RATINGS AND CHARACTERISTIC CURVES ZS4728A THRU ZS4753A +12 +10 +8 +6 +4 +2 VZ＠IZT RANGE 0 -2 -4 2 3 4 5 6 7 8 9 10 FIG.1B- Range for Units to 12 to 100 100 70 50 30 20 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) θVZ, TEMPERATURE COEFFICIENT ( mV/℃) Figure 2. Temperature Coefficients (-55℃to+150℃temperature change;90% of the units are in the ranges indicated.) 175 θ JL, JUMCTION TO LEAD THERMAL ℃ 150 125 100 75 50 25 0 +6 VZ＠IZ TA=25℃ +4 20mA +2 0.01mA 0 1mA -2 NOTE:BELOW 3 VOLTS AAND ABOCE 8 VOLTS CHANGES IN ZENER CURRENT DO NOT -4 3 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 10 L, LEAD LENGTH TO HEAT SINK (INCHES) 7 8 Figure 4. Effect of Zener Current C, CAPACITANCE (PF) 100 70 50 20 5mA 20mA 10 7 5 2 1 0VBIAS 100 0VBIAS 50 20 10 8 50%OF BREAKDOWNBIAS 4 1 2 3 5 7 10 20 30 50 70 100 1 VZ, ZENER CURRENT (mA) 2 5 1.25 1.0 0.75 0.5 0.25 0 10 20 VZ, NOMINAL VZ (VOLTS) Figure. 7 - Power Temperature Derating Curve PD ,MAXIMUM DISSIPATION (WATTS) ZZDYNAMIC IMPEDANCE (OHNS) 200 6 400 300 200 Tj=25℃ Iz(ms)=0.1Iz(do) f=60hz Iz=1mA 5 VZ, ZENER VOLTAGE (VOLTS) Figure 3. Typical Thermal Resistance versus Lead 1000 700 500 4 20 40 60 80 100 120 140 160 TL, LEAD TEMPERATURE (OC) 180 200 50 100