ZS4728A Thru ZS4753A Surface Mount Zener Diodes SURFACE MOUNT P b Lead(Pb)-Free ZENER DIODES 1.0 WATTS Features *1W Power Dissipation *For Surface Mounted Applications *Low zener Impedance *Low Regulation Factor *Zener Breakdown Voltage Range 3.3V to 36V Mechanical Data *Case : SMA-1 *Terminals : Solderable per MIL-STD-202,Method 208 *Polarity : Color Band Denotes Cathode *Marking : Marking Code(See Table on Page 2) *Mounting Position : Any *Weight : 0.05 grams SMA-1 SMA-1 Outline Dimension B unit:mm C SMA-1 Dim A B C E H J A E J H WEITRON http://www.weitron.com.tw H 1/3 Min Max 2.40 2.80 4.40 4.80 0.30 0.30 3.80 4.20 1.00 1.00 1.50 1.70 03-May-05 ZS4728A Thru ZS4753A Maximum Ratings (TA=25 C Unless Otherwise Noted) Symbol Characteristics Value Unit Power Dissipation TL=55 C PD 1.0 W Maximun junction Temperature Tj 150 TSTG -55 to +150 C C Storage Temperature Range ELECTRICAL CHARACTERISTICS (T A =25 C Unless Otherwise Noted VF=1.2V MAX, IF = 200mA for all types) Device ZS4728A ZS4729A ZS4730A ZS4731A ZS4732A ZS4733A ZS4734A ZS4735A ZS4736A ZS4737A ZS4738A ZS4739A ZS4740A ZS4741A ZS4742A ZS4743A ZS4744A ZS4745A ZS4746A ZS4747A ZS4748A ZS4749A ZS4750A ZS4751A ZS4752A ZS4753A Device Marking Z3V3 Z3V6 Z3V9 Z4V3 Z4V7 Z5V1 Z5V6 Z6V2 Z6V8 Z7V5 Z8V2 Z9V1 Z10 Z11 Z12 Z13 Z15 Z16 Z18 Z20 Z22 Z24 Z27 Z30 Z33 Z36 Zener Voltage VZ(Nom)@IZT Zener Impedance ZZT@IZT Leakage Current Surge Current IR@VR ZZK@IZK I RM @TA =25ºC Volts mA Ω Ω mA µA Volts mA 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 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 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 NOTE: 1. Based on dc-Measurement at Thermal Equilibrium. 2. Surge current is a non-repetitive, 8.3ms pulse width square wave or equivalent sine-wave superimposed on IZT per JEDEC method 3. SUFFIX “A” FOR ± 5% WEITRON http: // www.weitron.com.tw 2/3 03-May-05 ZS4728A Thru ZS4753A θ VZ, TEMPERATURE COEFFICIENT ( mV/℃ ) θ VZ, TEMPERATURE COEFFICIENT ( mV/℃ ) Typical Characteristics +12 +10 +8 +6 +4 +2 0 VZ＠IZT RANGE -2 -4 2 3 4 5 6 7 8 9 10 11 12 100 70 50 30 20 10 7 5 3 2 VZ＠IZT RANGE 1 10 20 30 50 70 100 VZ, ZENER VOLTAGE (VOLTS) VZ, ZENER VOLTAGE (VOLTS) FiG.1 Range for Units to 12 Volts FiG.2 Range for Units to 12 to 36 Volts 150 125 100 75 50 25 0 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 θ VZ, TEMPERATURE COEFFICIENT ( mV/℃ ) θ JL, JUMCTION TO LEAD THERMAL 175 +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 L, LEAD LENGTH TO HEAT SINK (INCHES) 1000 700 500 100 70 50 20 20mA 10 7 5 2 1 3 5 7 10 20 30 8 VZ V.S. θJL 0VBIAS 50 70 100 0VBIAS 50 20 10 8 50% OF BREAKDOWNBIAS 1 VZ, ZENER CURRENT (mA) FIG.5 Typical Thermal 7 100 4 2 6 400 300 200 5mA 1 5 FIG.4 Temperature Coefficients Tj=25℃ Iz(ms)=0.1Iz(do) f=60hz Iz=1mA 200 Lead V.S. θJL C, CAPACITANCE (PF) ZZDYNAMIC IMPEDANCE (OHNS) FIG.3 Temperature Coefficients 4 VZ, ZENER VOLTAGE (VOLTS) 2 5 10 20 50 100 VZ, NOMINAL VZ (VOLTS) FIG.6 Effect of Zener Current Resistance V.S. Lead PD ,MAXIMUM DISSIPATION (WATTS) 1.25 1.0 0.75 0.5 0.25 0 20 40 60 80 100 120 140 160 TL, LEAD TEMPERATURE (OC) 180 200 FIG.7 Power Temperature Derating Curve WEITRON http://www.weitron.com.tw 3/3 03-May-05