TCZM4728A TAK_CHEONG | Alldatasheet
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Technical content
1 Watt LL-41 Hermetically
Sealed Glass Zener Voltage Regulators Absolute Maximum Ratings TA = 25°C unless otherwise noted Parameter Value Units Storage Temperature Range -65 to +200 °C Maximum Junction Operating Temperature +175 °C Total Device Dissipation 1.0 Watt Thermal Resistance Junction to Ambient 170 °C / W These ratings are limiting values above which the serviceability of the diode may be impaired. Specification Features: Zener Voltage Range 3.3 to 56 Volts LL-41 MELF Package (JEDEC DO-213AB) Surface Mount Devices (SMD) Hermetically Sealed Glass Compression Bonded Construction All External Surfaces Are Corrosion Resistant And Terminals Are Readily Solderable RoHS Compliant Matte Tin (Sn) Lead Finish Color band Indicates Negative Polarity Electrical Characteristics TA = 25°C unless otherwise noted Device Type VZ @ IZT (Volts) Nominal IZT (mA) ZZT @ IZT (Ω) Max IZK (mA) ZZK @ IZK (Ω) Max IR @ VR (µA) Max VR (Volts) TCZM4728A 3.3 76 10 1 400 100 1 TCZM4729A 3.6 69 10 1 400 100 1 TCZM4730A 3.9 64 9 1 400 50 1 TCZM4731A 4.3 58 9 1 400 10 1 TCZM4732A 4.7 53 8 1 500 10 1 TCZM4733A 5.1 49 7 1 550 10 1 TCZM4734A 5.6 45 5 1 600 10 2 TCZM4735A 6.2 41 2 1 700 10 3 TCZM4736A 6.8 37 3.5 1 700 10 4 TCZM4737A 7.5 34 4 0.5 700 10 5 TCZM4738A 8.2 31 4.5 0.5 700 10 6 TCZM4739A 9.1 28 5 0.5 700 10 7 TCZM4740A 10 25 7 0.25 700 10 7.6 TCZM4741A 11 23 8 0.25 700 5 8.4 TCZM4742A 12 21 9 0.25 700 5 9.1 TCZM4743A 13 19 10 0.25 700 5 9.9 TCZM4744A 15 17 14 0.25 700 5 11.4 TCZM4745A 16 15.5 16 0.25 700 5 12.2 TCZM4746A 18 14 20 0.25 700 5 13.7 Cathode Anode ELECTRICAL SYMBOL TCZM4728A through TCZM4758A SURFACE MOUNT LL-41 DEVICE MARKING DIAGRAM Cathode Band Color: Blue
Electrical Characteristics TA = 25°C unless otherwise noted Device Type VZ @ IZT (Volts) Nominal IZT (mA) ZZT @ IZT (Ω) Max IZK (mA) ZZK @ IZK (Ω) Max IR @ VR (µA) Max VR (Volts) TCZM4747A 20 12.5 22 0.25 750 5 15.2 TCZM4748A 22 11.5 23 0.25 750 5 16.7 TCZM4749A 24 10.5 25 0.25 750 5 18.2 TCZM4750A 27 9.5 35 0.25 750 5 20.6 TCZM4751A 30 8.5 40 0.25 1000 5 22.8 TCZM4752A 33 7.5 45 0.25 1000 5 25.1 TCZM4753A 36 7 50 0.25 1000 5 27.4 TCZM4754A 39 6.5 60 0.25 1000 5 29.7 TCZM4755A 43 6 70 0.25 1500 5 32.7 TCZM4756A 47 5.5 80 0.25 1500 5 35.8 TCZM4757A 51 5 95 0.25 1500 5 38.8 TCZM4758A 56 4.5 110 0.25 2000 5 42.6 VF Forward Voltage = 1.2 V Maximum @ IF = 200 mA for all types Notes: 1. The device numbers listed have a standard tolerance on the nominal zener voltage of ±5%. 2. For detailed information on price, availability and delivery of nominal zener voltages between the voltages shown and tighte r voltage tolerances, contact your nearest Tak Cheong’s representative. 3. The zener impedance is derived from the 60-cycle ac voltage, which results when an ac current having an rms value equal to 10% of the dc zener current (IZT or IZK) is superimposed to IZT or IZK.
A 4.80 5.20 0.189 0.205 B 2.39 2.66 0.094 0.105 C 0.41 0.55 0.016 0.022 Notes: 1. All dimensions are within DO-213AB JEDEC standard. 2. LL-41 MELF polarity denoted by cathode band. B C A This datasheet presents technical data of Tak Cheong’s Zener Diodes. Complete specifications for the individual devices are provided in the form of datasheets. A comprehensive Selector Guide is included to simplify the task of choosing the best set of components required for a specific application. For additional information, please visit our website http://www.takcheong.com. Although information in this datasheet has been carefully checked, no re sponsibility for the inaccuracies can be assumed by Tak Cheong. Please consult your nearest Tak Cheong’s sales office for further assistance. Tak Cheong reserves the right to make changes without further notice to any products herein to further improve reliability, function or design, cost and productivity. and are registered trademarks of Tak Cheong Electronics (Holdings) Co., Ltd. TAK CHEONG