Z ibo Seno Electronic Engineering Co., Ltd. DL4728A - DL4764A 1.0W ZENER DIODE Features · · · · 1.0 Watt Power Dissipation 3.3V - 100V Nominal Zener Voltage LL-41 / MELF Standard VZ Tolerance is 5% Lead Free Finish, RoHS Compliant Mechanical Data · · Case: LL-41 / MELF · · Moisture Sensitivity: Level 1 per J-STD-020C · · · Polarity: Cathode Band Case Material: Glass. UL Flammability Classification Rating 94V-0 Terminals: Finish ¾ Sn96.5Ag3.5. Solderable per MIL-STD-202, Method 208 Marking: Type Number Weight: 0.25 grams (approximate) Maximum Ratings @ TA = 25°C unless otherwise specified Characteristic Symbol Value Unit IZ Pd / VZ mA Pd 1.0 6.67 W mW/°C RqJA 170 °C/W Zener Current (see Table page 2) Power Dissipation Derate Above 50°C (Note 1) Thermal Resistance - Junction to Ambient Air Forward Voltage @ IF = 200 mA Operating and Storage Temperature Range Note: VF 1.2 V Tj, TSTG -65 to + 175 °C 1. Valid provided that leads are kept at TL @ 50°C with lead length = 9.5mm (3/8”) from case. 2. EC Directive 2002/95/EC (RoHS) revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied where applicable, see EU Directive Annex Notes 5 and 7. DL4728A - DL4764A 1 of 3 www.senocn.com Alldatasheet Z ibo Seno Electronic Engineering Co., Ltd. DL4728A - DL4764A Electrical Characteristics Type Number @ TA = 25°C unless otherwise specified Nominal Zener Voltage (Note 3) Test Current Maximum Zener Impedance (Note 4) VZ @ IZT IZT ZZT @ IZT Maximum Reverse Leakage Current ZZK @ IZK IZK IR Max Surge Current 8.3ms @ VR IZS Temperature Coefficient @ IZT (V) (mA) (W) (W) (mA) (µA) (V) (mA) %/°C DL4728A 3.3 76 10 400 1.0 100 1.0 1380 -0.08 to -0.05 DL4729A 3.6 69 10 400 1.0 100 1.0 1260 -0.08 to -0.05 DL4730A 3.9 64 9.0 400 1.0 50 1.0 1190 -0.07 to -0.02 DL4731A 4.3 58 9.0 400 1.0 10 1.0 1070 -0.07 to -0.01 DL4732A 4.7 53 8.0 500 1.0 10 1.0 970 -0.03 to +0.04 DL4733A 5.1 49 7.0 550 1.0 10 1.0 890 -0.01 to +0.04 DL4734A 5.6 45 5.0 600 1.0 10 2.0 810 0 to +0.045 DL4735A 6.2 41 2.0 700 1.0 10 3.0 730 +0.01 to +0.055 DL4736A 6.8 37 3.5 700 1.0 10 4.0 660 +0.015 to +0.06 DL4737A 7.5 34 4.0 700 0.5 10 5.0 605 +0.02 to +0.065 DL4738A 8.2 31 4.5 700 0.5 10 6.0 550 0.03 to 0.07 DL4739A 9.1 28 5.0 700 0.5 10 7.0 500 0.035 to 0.075 DL4740A 10 25 7.0 700 0.25 10 7.6 454 0.04 to 0.08 DL4741A 11 23 8.0 700 0.25 5.0 8.4 414 0.045 to 0.08 DL4742A 12 21 9.0 700 0.25 5.0 9.1 380 0.045 to 0.085 DL4743A 13 19 10 700 0.25 5.0 9.9 344 0.05 to 0.085 DL4744A 15 17 14 700 0.25 5.0 11.4 304 0.055 to 0.09 DL4745A 16 15.5 16 700 0.25 5.0 12.2 285 0.055 to 0.09 DL4746A 18 14 20 750 0.25 5.0 13.7 250 0.06 to 0.09 DL4747A 20 12.5 22 750 0.25 5.0 15.2 225 0.06 to 0.09 DL4748A 22 11.5 23 750 0.25 5.0 16.7 205 0.06 to 0.095 DL4749A 24 10.5 25 750 0.25 5.0 18.2 190 0.06 to 0.095 DL4750A 27 9.5 35 750 0.25 5.0 20.6 170 0.06 to 0.095 DL4751A 30 8.5 40 1000 0.25 5.0 22.8 150 0.06 to 0.095 DL4752A 33 7.5 45 1000 0.25 5.0 25.1 135 0.06 to 0.095 DL4753A 36 7.0 50 1000 0.25 5.0 27.4 125 0.06 to 0.095 DL4754A 39 6.5 60 1000 0.25 5.0 29.7 115 0.06 to 0.095 DL4755A 43 6.0 70 1500 0.25 5.0 32.7 110 0.06 to 0.095 DL4756A 47 5.5 80 1500 0.25 5.0 35.8 95 0.06 to 0.095 DL4757A 51 5.0 95 1500 0.25 5.0 38.8 90 0.06 to 0.095 DL4758A 56 4.5 110 2000 0.25 5.0 42.6 80 0.06 to 0.095 DL4759A 62 4.0 125 2000 0.25 5.0 47.1 70 0.06 to 0.095 DL4760A 68 3.7 150 2000 0.25 5.0 51.7 65 0.06 to 0.095 DL4761A 75 3.3 175 2000 0.25 5.0 56.0 60 0.06 to 0.095 DL4762A 82 3.0 200 3000 0.25 5.0 62.2 55 0.06 to 0.095 DL4763A 91 2.8 250 3000 0.25 5.0 69.2 50 0.06 to 0.095 DL4764A 100 2.5 350 3000 0.25 5.0 76.0 45 0.06 to 0.095 Notes: 3. Measured under thermal equilibrium and dc (IZT) test conditions. 4. The Zener impedance is derived from the 60 Hz ac voltage which results when an ac current having an rms value equal to 10% of the Zener current (IZT or IZK) is superimposed on IZT or IZK. Zener impedance is measured at two points to insure a sharp knee on the breakdown curve and to eliminate unstable units. DL4728A - DL4764A 2 of 3 www.senocn.com Alldatasheet Z ibo Seno Electronic Engineering Co., Ltd. Pd, TOTAL POWER DISSIPATION (W) DL4728A - DL4764A 1.0 250 0.8 200 0.6 150 0.4 100 0.2 50 0 0 40 80 120 160 200 0 5 30 15 25 20 10 l, Lead Length (mm) Fig. 2 Typical Thermal Resistance vs. Lead Length 0 TA, AMBIENT TEMPERATURE ( C) Fig.1 Power Dissipation vs Ambient Temperature 1000 1000 f = 1MHz TA = 25C Cj, DIODE CAPACITANCE (pF) IZ = 1mA 2mA 100 100 VR = 0V 5mA 10mA VR = 2V VR = 5V VR = 20V 10 20mA VR = 30V 10 1 1 0 10 20 30 40 50 60 VZ, ZENER VOLTAGE (V) Fig.3, Junction Capacitance vs Zener Voltage DL4728A - DL4761A 3 of 3 1 10 100 VZ, ZENER VOLTAGE (V) Fig. 4 Typical Zener Impedance vs. Zener Voltage www.senocn.com Alldatasheet