SMD Zener Diode SMD Diodes Specialist CZRA4728-G Thru CZRA4753-G Voltage: 3.3 to 36 Volts Power: 1.0 Watts RoHS Device Features SMA -For surface mounted applications. -1.0W Power Dissipation. 0.185(4.8) 0.173(4.4) 0.012(0.3) Typ. -Ideally suited for automated assembly processes. 0.110(2.8) 0.094(2.4) -Pb free product. Mechanical data -Case: SMA, Molded plastic. -Terminals: Solder Plated,solderable per MIL-STD-202,method 208. 0.165(4.2) 0.150(3.8) -Polarity: Cathode band. 0.067(1.7) 0.060(1.5) -Mounting position: Any. 0.040(1.0) Typ. 0.040(1.0) Typ. -Weight: 0.05 gram(approx.). Dimensions in inches and (millimeter) Maximum Rating And Electrical Characteristics o (T A =25 C, unless otherwise noted) Parameter Maximum power dissipation (Note 1) Operating junction and storage temperature range Symbol Value PD 1 T J , T STG -55 to +150 Unit W O C REV:B QW-BZ004 Page 1 SMD Zener Diode SMD Diodes Specialist O ELECTRICAL CHARACTERISTICS(T A = 25 C) Maximum Zener Impedance ZZT @ ZZK @ IZK IZT IZK (mA) (ohms) (ohms) Part Number Marking Code Nominal Zener Voltage VZ@IZT (V) Test Current IZT(mA) CZRA4728-G Z3V3 3.3 76 10 400 CZRA4729-G Z3V6 3.6 69 10 CZRA4730-G Z3V9 3.9 64 CZRA4731-G Z4V3 4.3 CZRA4732-G Z4V7 CZRA4733-G Leakage Current Surge Current @ TA=25OC IR Max. (uA) VR (V) 1 100 1 1380 400 1 100 1 1260 9 400 1 50 1 1190 58 9 400 1 10 1 1070 4.7 53 8 500 1 10 1 970 Z5V1 5.1 49 7 550 1 10 1 890 CZRA4734-G Z5V6 5.6 45 5 600 1 10 2 810 CZRA4735-G Z6V2 6.2 41 2 700 1 10 3 730 CZRA4736-G Z6V8 6.8 37 3.5 700 1 10 4 660 CZRA4737-G Z7V5 7.5 34 4 700 0.5 10 5 605 CZRA4738-G Z8V2 8.2 31 4.5 700 0.5 10 6 550 CZRA4739-G Z9V1 9.1 28 5 700 0.5 10 7 500 CZRA4740-G Z10 10 25 7 700 0.25 10 7.6 454 CZRA4741-G Z11 11 23 8 700 0.25 5 8.4 414 CZRA4742-G Z12 12 21 9 700 0.25 5 9.1 380 CZRA4743-G Z13 13 19 10 700 0.25 5 9.9 344 CZRA4744-G Z15 15 17 14 700 0.25 5 11.4 304 CZRA4745-G Z16 16 15.5 16 700 0.25 5 12.2 285 CZRA4746-G Z18 18 14 20 750 0.25 5 13.7 250 CZRA4747-G Z20 20 12.5 22 750 0.25 5 15.2 225 CZRA4748-G Z22 22 11.5 23 750 0.25 5 16.7 205 CZRA4749-G Z24 24 10.5 25 750 0.25 5 18.2 190 CZRA4750-G Z27 27 9.5 35 750 0.25 5 20.6 170 CZRA4751-G Z30 30 8.5 40 1000 0.25 5 22.8 150 CZRA4752-G Z33 33 7.5 45 1000 0.25 5 25.1 135 CZRA4753-G Z36 36 7 50 1000 0.25 5 27.4 125 REV:B QW-BZ004 Page 2 SMD Zener Diode SMD Diodes Specialist RATING AND CHARACTERISTIC CURVES (CZRA4728-G Thru CZRA4753-G) FIG 1B. Range for Units 12 to 100 Volts FIG 1A. Range for Units to 12 Volts 100 Temperature Coefficient (mV/OC) Temperature Coefficient (mV/ C) 12 O 10 8 6 4 2 Range 0 -2 V Z @I ZT 10 V Z @I ZT -4 2 3 4 5 6 7 8 9 10 11 Range 1 10 12 50 100 VZ, Zener Voltage (V) VZ, Zener Voltage (V) 175 6 Temperature Coefficient (mV/ C) 150 V Z @I ZT T A =25 OC O θJL, Junction to lead thermal (OC/W) FIG 2. Temperature Coefficients (-55OC to +150OC temperature change;90%of the units are in the ranges indicated.) 125 100 75 50 25 0 4 20mA 2 1mA -2 Note: Below 3V and above 8V changes in Zener Voltage do not affect temperature -4 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0 3 FIG 3. Typical Thermal Resistance V.S. Lead 5 6 8 7 FIG 4. Effect of Zener Current 400 C, Capacitance (pF) 1000 I Z=1mA 100 4 VZ, Zener Voltage (V) L, Lead length to heat sink (Inches) Dynamic impedance (ohms) 0.01mA 0 I Z=5mA I Z=20mA 10 T J =25 OC I Z (ms)=0.1I Z (do) f=60H Z 1 1 10 100 VZ, Zener Voltage (V) 0V bias 100 1V bias 10 50% of breakdown bias 4 1 10 100 VZ, Zener Voltage (V) FIG 5. Power Temperature Derating Curve PD, Maximum dissipatioin (W) 1.25 1.00 0.75 0.50 0.25 0 0 40 80 120 160 200 TL, Lead temperature (OC) REV:B QW-BZ004 Page 2