1 Watt LL-41 Hermetically Sealed Glass Zener Voltage Regulators Absolute Maximum Ratings SURFACE MOUNT LL-41 TA = 25°C unless otherwise noted Parameter Value Units -65 to +200 °C +175 °C Total Device Dissipation 1.0 Watt Thermal Resistance Junction to Ambient 170 °C / W Storage Temperature Range Maximum Junction Operating Temperature DEVICE MARKING DIAGRAM Cathode Band Color: Blue 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) Cathode Anode Hermetically Sealed Glass Compression Bonded Construction All External Surfaces Are Corrosion Resistant And Terminals Are Readily Solderable ELECTRICAL SYMBOL RoHS Compliant Matte Tin (Sn) Lead Finish Color band Indicates Negative Polarity Electrical Characteristics Device Type ZM4728A ZM4729A ZM4730A ZM4731A ZM4732A ZM4733A ZM4734A ZM4735A ZM4736A ZM4737A ZM4738A ZM4739A ZM4740A ZM4741A ZM4742A ZM4743A ZM4744A ZM4745A ZM4746A VZ @ IZT (Volts) Nominal 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 TA = 25°C unless otherwise noted ZZT @ IZT IZT IZK () (mA) (mA) Max 76 10 1 69 10 1 64 9 1 58 9 1 53 8 1 49 7 1 45 5 1 41 2 1 37 3.5 1 34 4 0.5 31 4.5 0.5 28 5 0.5 25 7 0.25 23 8 0.25 21 9 0.25 19 10 0.25 17 14 0.25 15.5 16 0.25 14 20 0.25 ZZK @ IZK () Max 400 400 400 400 500 550 600 700 700 700 700 700 700 700 700 700 700 700 700 IR @ VR (A) Max 100 100 50 10 10 10 10 10 10 10 10 10 10 5 5 5 5 5 5 VR (Volts) 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 Number: DB-226 Nov, 2010 / A Page 1 ZM4728A through ZM4758A S EM ICOND UCTOR S EM ICOND UCTOR Electrical Characteristics Device Type ZM4747A ZM4748A ZM4749A ZM4750A ZM4751A ZM4752A ZM4753A ZM4754A ZM4755A ZM4756A ZM4757A ZM4758A VZ @ IZT (Volts) Nominal 20 22 24 27 30 33 36 39 43 47 51 56 TA = 25°C unless otherwise noted ZZT @ IZT IZT IZK () (mA) (mA) Max 12.5 22 0.25 11.5 23 0.25 10.5 25 0.25 9.5 35 0.25 8.5 40 0.25 7.5 45 0.25 7 50 0.25 6.5 60 0.25 6 70 0.25 5.5 80 0.25 5 95 0.25 4.5 110 0.25 ZZK @ IZK () Max 750 750 750 750 1000 1000 1000 1000 1500 1500 1500 2000 IR @ VR (A) Max 5 5 5 5 5 5 5 5 5 5 5 5 VR (Volts) 15.2 16.7 18.2 20.6 22.8 25.1 27.4 29.7 32.7 35.8 38.8 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 tighter 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. Number: DB-226 Nov, 2010 / A Page 2 S EM ICOND UCTOR Package Outline Package Case Outline B LL- 41 MELF DIM LL- 41 MELF Millimeters Inches Min Max Min Max 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 A C Notes: 1. 2. All dimensions are within DO-213AB JEDEC standard. LL-41 MELF polarity denoted by cathode band. Number: DB-226 Nov, 2010 / A Page 3 DISC LA IMER NOTIC E NOTICE The information presented in this document is for reference only. Tak Cheong reserves the right to make changes without notice for the specification of the products displayed herein. The product listed herein is designed to be used with ordinary electronic equipment or devices, and not designed to be used with equipment or devices which require high level of reliability and the malfunction of with would directly endanger human life (such as medical instruments, transportation equipment, aerospace machinery, nuclear-reactor controllers, fuel controllers and other safety devices), Tak Cheong Semiconductor Co., Ltd., or anyone on its behalf, assumes no responsibility or liability for any damagers resulting from such improper use of sale. This publication supersedes & replaces all information previously supplied. For additional information, please visit our website http://www.takcheong.com, or consult your nearest Tak Cheong’s sales office for further assistance. Number: DB-111 April 29, 2008 / A