LS4148/LS4448 Vishay Semiconductors Small Signal Fast Switching Diodes Features • Silicon Epitaxial Planar Diodes • Electrical data identical with the devices e2 1N4148 and 1N4448 respectively • Quadro Melf package • Lead (Pb)-free component • Component in accordance to RoHS 2002/95/EC and WEEE 2002/96/EC 9612009 Applications • Extremely fast switches Mechanical Data Case: QuadroMELF Glass case (SOD80) Weight: approx. 34 mg Cathode Band Color: Black Packaging Codes/Options: GS18/10 k per 13" reel (8 mm tape), 10 k/box GS08/2.5 k per 7" reel (8 mm tape), 12.5 k/box Parts Table Part Type differentiation Ordering code Type Marking Remarks LS4148 VF = max. 1000 mV at IF = 50 mA LS4148-GS18 or LS4148-GS08 - Tape and Reel LS4448 VF = max. 1000 mV at IF = 100 mA LS4448-GS18 or LS4448-GS08 - Tape and Reel Absolute Maximum Ratings Tamb = 25 °C, unless otherwise specified Parameter Test condition Repetitive peak reverse voltage Reverse voltage Peak forward surge current tp = 1 µs Repetitive peak forward current Forward continuous current Average forward current VR = 0 Power dissipation Symbol Value Unit VRRM 100 V VR 75 V IFSM 2 A IFRM 500 mA IF 300 mA IFAV 150 mA Ptot 500 mW Symbol Value Unit RthJA 500 K/W Tj 175 °C Tstg - 65 to + 175 °C Thermal Characteristics Tamb = 25 °C, unless otherwise specified Parameter Thermal resistance junction to ambient air Junction temperature Storage temperature range Document Number 85561 Rev. 1.8, 04-May-07 Test condition on PC board 50 mm x 50 mm x 1.6mm www.vishay.com 1 LS4148/LS4448 Vishay Semiconductors Electrical Characteristics Tamb = 25 °C, unless otherwise specified Parameter Test condition Part Symbol Min LS4448 VF 620 Max Unit 720 IF = 50 mA LS4148 VF mV IF = 100 mA LS4448 VF 860 1000 mV 930 1000 mV IR 25 nA VR = 20 V, Tj = 150 °C IR 50 µA VR = 75 V IR 5 µA IF = 5 mA Forward voltage VR = 20 V Reverse current V(BR) Breakdown voltage IR = 100 µA, tp/T = 0.01, tp = 0.3 ms Diode capacitance VR = 0, f = 1 MHz, VHF = 50 mV CD Rectification efficiency VHF = 2 V, f = 100 MHz ηr Reverse recovery time IF = IR = 10 mA, iR = 1 mA IF = 10 mA, VR = 6 V, iR = 0.1 x IR, RL = 100 Ω Typ. 100 V 4 pF trr 8 ns trr 4 ns 45 % Typical Characteristics Tamb = 25 °C, unless otherwise specified 1000 1000 IR- Reverse Current (nA) IF - Forward Current (mA) LS4148 100 Scattering Limit 10 1 Tj = 25 °C 0.1 0 0.4 0.8 1.2 1.6 1 1 100 Figure 3. Reverse Current vs. Reverse Voltage 3.0 1000 CD - Diode Capacitance (pF) LS4448 IF - Forward Current (mA) 10 VR- Reverse Voltage (V) 94 9098 Figure 1. Forward Current vs. Forward Voltage 100 Scattering Limit 10 1 Tj = 25 °C 0 16642 0.4 0.8 1.2 1.6 2.0 1.5 1.0 0.5 0.1 2.0 VF - Forward Voltage (V) Figure 2. Forward Current vs. Forward Voltage www.vishay.com f = 1 MHz Tj = 25 °C 2.5 0 0.1 2 Scattering Limit 10 2.0 VF - Forward Voltage (V) 16640 Tj = 25 °C 100 94 9099 1 100 10 VR - Reverse Voltage (V) Figure 4. Diode Capacitance vs. Reverse Voltage Document Number 85561 Rev. 1.8, 04-May-07 LS4148/LS4448 Vishay Semiconductors Package Dimensions in millimeters (inches): Quadro MELF SOD80 96 12071 Document Number 85561 Rev. 1.8, 04-May-07 www.vishay.com 3 LS4148/LS4448 Vishay Semiconductors Ozone Depleting Substances Policy Statement It is the policy of Vishay Semiconductor GmbH to 1. Meet all present and future national and international statutory requirements. 2. Regularly and continuously improve the performance of our products, processes, distribution and operating systems with respect to their impact on the health and safety of our employees and the public, as well as their impact on the environment. It is particular concern to control or eliminate releases of those substances into the atmosphere which are known as ozone depleting substances (ODSs). The Montreal Protocol (1987) and its London Amendments (1990) intend to severely restrict the use of ODSs and forbid their use within the next ten years. Various national and international initiatives are pressing for an earlier ban on these substances. Vishay Semiconductor GmbH has been able to use its policy of continuous improvements to eliminate the use of ODSs listed in the following documents. 1. Annex A, B and list of transitional substances of the Montreal Protocol and the London Amendments respectively 2. Class I and II ozone depleting substances in the Clean Air Act Amendments of 1990 by the Environmental Protection Agency (EPA) in the USA 3. Council Decision 88/540/EEC and 91/690/EEC Annex A, B and C (transitional substances) respectively. Vishay Semiconductor GmbH can certify that our semiconductors are not manufactured with ozone depleting substances and do not contain such substances. We reserve the right to make changes to improve technical design and may do so without further notice. Parameters can vary in different applications. All operating parameters must be validated for each customer application by the customer. Should the buyer use Vishay Semiconductors products for any unintended or unauthorized application, the buyer shall indemnify Vishay Semiconductors against all claims, costs, damages, and expenses, arising out of, directly or indirectly, any claim of personal damage, injury or death associated with such unintended or unauthorized use. Vishay Semiconductor GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany www.vishay.com 4 Document Number 85561 Rev. 1.8, 04-May-07 Legal Disclaimer Notice Vishay Disclaimer All product specifications and data are subject to change without notice. Vishay Intertechnology, Inc., its affiliates, agents, and employees, and all persons acting on its or their behalf (collectively, “Vishay”), disclaim any and all liability for any errors, inaccuracies or incompleteness contained herein or in any other disclosure relating to any product. Vishay disclaims any and all liability arising out of the use or application of any product described herein or of any information provided herein to the maximum extent permitted by law. The product specifications do not expand or otherwise modify Vishay’s terms and conditions of purchase, including but not limited to the warranty expressed therein, which apply to these products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document or by any conduct of Vishay. The products shown herein are not designed for use in medical, life-saving, or life-sustaining applications unless otherwise expressly indicated. Customers using or selling Vishay products not expressly indicated for use in such applications do so entirely at their own risk and agree to fully indemnify Vishay for any damages arising or resulting from such use or sale. Please contact authorized Vishay personnel to obtain written terms and conditions regarding products designed for such applications. Product names and markings noted herein may be trademarks of their respective owners. Document Number: 91000 Revision: 18-Jul-08 www.vishay.com 1