DISCRETE SEMICONDUCTORS DATA SHEET book, halfpage M3D302 BZA420A Quadruple ESD transient voltage suppressor Product specification Supersedes data of 1998 Oct 30 1999 May 20 Philips Semiconductors Product specification Quadruple ESD transient voltage suppressor FEATURES BZA420A PINNING * ESD rating >8 kV, according to IEC1000-4-2 PIN DESCRIPTION * SOT457 surface mount package 1 cathode 1 * Common anode configuration 2 common * Non-clamping range -0.5 to 20 V 3 cathode 2 * Maximum reverse peak power dissipation: 19.6 W at tp = 1 ms 4 cathode 3 * Maximum clamping voltage at peak pulse current: 28 V at IZSM = 0.7 A. 5 common 6 cathode 4 APPLICATIONS handbook, halfpage 6 * Computers and peripherals 5 4 1 * Audio and video equipment 3 2 * Communication systems 4 5 * Medical equipment. 6 1 2 3 Top view DESCRIPTION Monolithic transient voltage suppressor diode in a six lead SOT457 (SC-74) package for 4-bit wide ESD transient suppression at 20 V level. MAM357 Marking code: Z0. Fig.1 Simplified outline (SOT457) and symbol. LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT Per diode IZ working current Ts = 60 C; note 1 - note 2 mA IF continuous forward current Ts = 60 C - 100 mA IFSM non-repetitive peak forward current tp = 1 ms; square pulse - 3.75 A IZSM non-repetitive peak reverse current tp = 1 ms; square pulse; see Fig.2 - 0.7 A Ptot total power dissipation Ts = 60 C; see Fig.3 - 720 mW PZSM non repetitive peak reverse power square pulse; tp = 1 ms; see Fig.4 dissipation - 19.6 W Tstg storage temperature -65 +150 C Tj junction temperature -65 +150 C Notes 1. Ts is the temperature at the soldering point of the anode pin. 2. DC working current limited by Ptot max. 1999 May 20 2 Philips Semiconductors Product specification Quadruple ESD transient voltage suppressor BZA420A THERMAL CHARACTERISTICS SYMBOL Rth j-s PARAMETER CONDITIONS thermal resistance from junction to soldering point VALUE UNIT 125 K/W MAX. UNIT one or more diodes loaded ELECTRICAL CHARACTERISTICS Tj = 25 C unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN. TYP. Per diode VZ working voltage IZ = 1 mA 19 20 21 V VF forward voltage IF = 200 mA - - 1.3 V VZSM non-repetitive peak reverse voltage IZSM = 0.7 A; tp = 1 ms - - 28 V IR reverse current VR = 15 V - - 100 nA rdif differential resistance IZ = 1 mA - - 125 SZ temperature coefficient of working voltage IZ = 5 mA - 16.2 - mV/K Cd diode capacitance see Fig.5 - - 48 pF VR = 15 V; f = 1 MHz - - 14 pF VR = 0; f = 1 MHz 1999 May 20 3 Philips Semiconductors Product specification Quadruple ESD transient voltage suppressor BZA420A MDA197 10 MDA198 1000 Ptot handbook, halfpage handbook, halfpage (mW) 800 IZSM (A) 600 1 400 200 10-1 10-1 1 0 10 tp (ms) 0 50 100 150 Ts (oC) 200 All diodes loaded. Fig.2 Maximum non-repetitive peak reverse current as a function of pulse time. Fig.3 Power derating curve. MDA199 102 handbook, halfpage MDA200 50 Cd handbook, halfpage (pF) 40 PZSM (W) 30 10 20 10 1 10-1 1 tp (ms) 0 10 0 PZSM = VZSM x IZSM. VZSM is the non-repetitive peak reverse voltage at IZSM. Fig.4 10 VR (V) 15 Tj = 25 C; f = 1 MHz. Maximum non-repetitive peak reverse power dissipation as a function of pulse duration (square pulse). 1999 May 20 5 Fig.5 4 Diode capacitance as a function of reverse voltage; typical values. Philips Semiconductors Product specification Quadruple ESD transient voltage suppressor handbook, full pagewidth ESD TESTER RZ 450 RG 223/U 50 coax CZ BZA420A DIGITIZING OSCILLOSCOPE 10x ATTENUATOR 50 note 1 Note 1: attenuator is only used for open socket high voltage measurements IEC 1000-4-2 network CZ = 150 pF; RZ = 330 1/4 BZA420A vertical scale = 100 V/Div horizontal scale = 50 ns/Div vertical scale = 10 V/Div horizontal scale = 50 ns/Div GND GND unclamped +1 kV ESD voltage waveform (IEC 1000-4-2 network) clamped +1 kV ESD voltage waveform (IEC 1000-4-2 network) GND GND vertical scale = 100 V/Div horizontal scale = 50 ns/Div unclamped -1 kV ESD voltage waveform (IEC 1000-4-2 network) vertical scale = 10 V/Div horizontal scale = 50 ns/Div clamped -1 kV ESD voltage waveform (IEC 1000-4-2 network) Fig.6 ESD clamping test set-up and waveforms. 1999 May 20 5 MBK386 Philips Semiconductors Product specification Quadruple ESD transient voltage suppressor BZA420A APPLICATION INFORMATION Typical common anode application A quadruple transient suppressor in a SOT457 package makes it possible to protect four separate lines using only one package. Two simplified examples are shown in Figs 7 and 8. handbook, full pagewidth keyboard, terminal, printer, etc. A B C D I/O FUNCTIONAL DECODER BZA420A GND MGK456 Fig.7 Computer interface protection. VDD handbook, full pagewidth VGG address bus RAM I/O ROM data bus CPU CLOCK control bus BZA420A GND MGK457 Fig.8 Microprocessor protection. 1999 May 20 6 Philips Semiconductors Product specification Quadruple ESD transient voltage suppressor Device placement and printed-circuit board layout Circuit board layout is of extreme importance in the suppression of transients. The clamping voltage of the BZA420A is determined by the peak transient current and the rate of rise of that current (di/dt). Since parasitic inductances can further add to the clamping voltage (V = L di/dt) the series conductor lengths on the printed-circuit board should be kept to a minimum. This includes the lead length of the suppression element. In addition to minimizing conductor length the following printed-circuit board layout guidelines are recommended: 1. Place the suppression element close to the input terminals or connectors 2. Keep parallel signal paths to a minimum 3. Avoid running protection conductors in parallel with unprotected conductors 4. Minimize all printed-circuit board loop areas including power and ground loops 5. Minimize the length of the transient return path to ground 6. Avoid using shared transient return paths to a common ground point. 1999 May 20 7 BZA420A Philips Semiconductors Product specification Quadruple ESD transient voltage suppressor BZA420A PACKAGE OUTLINE Plastic surface mounted package; 6 leads SOT457 D E B y A HE 6 X v M A 4 5 Q pin 1 index A A1 1 2 bp e c 3 Lp w M B detail X 0 1 2 mm scale DIMENSIONS (mm are the original dimensions) UNIT A A1 bp c D E e HE Lp Q v w y mm 1.1 0.9 0.1 0.013 0.40 0.25 0.26 0.10 3.1 2.7 1.7 1.3 0.95 3.0 2.5 0.6 0.2 0.33 0.23 0.2 0.2 0.1 OUTLINE VERSION SOT457 1999 May 20 REFERENCES IEC JEDEC EIAJ SC-74 8 EUROPEAN PROJECTION ISSUE DATE 97-02-28 Philips Semiconductors Product specification Quadruple ESD transient voltage suppressor BZA420A DEFINITIONS Data Sheet Status Objective specification This data sheet contains target or goal specifications for product development. Preliminary specification This data sheet contains preliminary data; supplementary data may be published later. Product specification This data sheet contains final product specifications. Limiting values Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the specification is not implied. Exposure to limiting values for extended periods may affect device reliability. Application information Where application information is given, it is advisory and does not form part of the specification. LIFE SUPPORT APPLICATIONS These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such improper use or sale. 1999 May 20 9 Philips Semiconductors Product specification Quadruple ESD transient voltage suppressor NOTES 1999 May 20 10 BZA420A Philips Semiconductors Product specification Quadruple ESD transient voltage suppressor NOTES 1999 May 20 11 BZA420A Philips Semiconductors - a worldwide company Argentina: see South America Australia: 34 Waterloo Road, NORTH RYDE, NSW 2113, Tel. +61 2 9805 4455, Fax. +61 2 9805 4466 Austria: Computerstr. 6, A-1101 WIEN, P.O. Box 213, Tel. +43 1 60 101 1248, Fax. +43 1 60 101 1210 Belarus: Hotel Minsk Business Center, Bld. 3, r. 1211, Volodarski Str. 6, 220050 MINSK, Tel. +375 172 20 0733, Fax. +375 172 20 0773 Belgium: see The Netherlands Brazil: see South America Bulgaria: Philips Bulgaria Ltd., Energoproject, 15th floor, 51 James Bourchier Blvd., 1407 SOFIA, Tel. +359 2 68 9211, Fax. +359 2 68 9102 Canada: PHILIPS SEMICONDUCTORS/COMPONENTS, Tel. +1 800 234 7381, Fax. +1 800 943 0087 China/Hong Kong: 501 Hong Kong Industrial Technology Centre, 72 Tat Chee Avenue, Kowloon Tong, HONG KONG, Tel. +852 2319 7888, Fax. +852 2319 7700 Colombia: see South America Czech Republic: see Austria Denmark: Sydhavnsgade 23, 1780 COPENHAGEN V, Tel. +45 33 29 3333, Fax. +45 33 29 3905 Finland: Sinikalliontie 3, FIN-02630 ESPOO, Tel. +358 9 615 800, Fax. +358 9 6158 0920 France: 51 Rue Carnot, BP317, 92156 SURESNES Cedex, Tel. +33 1 4099 6161, Fax. +33 1 4099 6427 Germany: Hammerbrookstrae 69, D-20097 HAMBURG, Tel. +49 40 2353 60, Fax. +49 40 2353 6300 Hungary: see Austria India: Philips INDIA Ltd, Band Box Building, 2nd floor, 254-D, Dr. Annie Besant Road, Worli, MUMBAI 400 025, Tel. +91 22 493 8541, Fax. +91 22 493 0966 Indonesia: PT Philips Development Corporation, Semiconductors Division, Gedung Philips, Jl. Buncit Raya Kav.99-100, JAKARTA 12510, Tel. +62 21 794 0040 ext. 2501, Fax. +62 21 794 0080 Ireland: Newstead, Clonskeagh, DUBLIN 14, Tel. +353 1 7640 000, Fax. +353 1 7640 200 Israel: RAPAC Electronics, 7 Kehilat Saloniki St, PO Box 18053, TEL AVIV 61180, Tel. +972 3 645 0444, Fax. +972 3 649 1007 Italy: PHILIPS SEMICONDUCTORS, Piazza IV Novembre 3, 20124 MILANO, Tel. +39 02 67 52 2531, Fax. +39 02 67 52 2557 Japan: Philips Bldg 13-37, Kohnan 2-chome, Minato-ku, TOKYO 108-8507, Tel. +81 3 3740 5130, Fax. +81 3 3740 5077 Korea: Philips House, 260-199 Itaewon-dong, Yongsan-ku, SEOUL, Tel. +82 2 709 1412, Fax. +82 2 709 1415 Malaysia: No. 76 Jalan Universiti, 46200 PETALING JAYA, SELANGOR, Tel. +60 3 750 5214, Fax. +60 3 757 4880 Mexico: 5900 Gateway East, Suite 200, EL PASO, TEXAS 79905, Tel. +9-5 800 234 7381, Fax +9-5 800 943 0087 Middle East: see Italy Netherlands: Postbus 90050, 5600 PB EINDHOVEN, Bldg. VB, Tel. +31 40 27 82785, Fax. +31 40 27 88399 New Zealand: 2 Wagener Place, C.P.O. Box 1041, AUCKLAND, Tel. +64 9 849 4160, Fax. +64 9 849 7811 Norway: Box 1, Manglerud 0612, OSLO, Tel. +47 22 74 8000, Fax. +47 22 74 8341 Pakistan: see Singapore Philippines: Philips Semiconductors Philippines Inc., 106 Valero St. Salcedo Village, P.O. Box 2108 MCC, MAKATI, Metro MANILA, Tel. +63 2 816 6380, Fax. +63 2 817 3474 Poland: Ul. Lukiska 10, PL 04-123 WARSZAWA, Tel. +48 22 612 2831, Fax. +48 22 612 2327 Portugal: see Spain Romania: see Italy Russia: Philips Russia, Ul. Usatcheva 35A, 119048 MOSCOW, Tel. +7 095 755 6918, Fax. +7 095 755 6919 Singapore: Lorong 1, Toa Payoh, SINGAPORE 319762, Tel. +65 350 2538, Fax. +65 251 6500 Slovakia: see Austria Slovenia: see Italy South Africa: S.A. PHILIPS Pty Ltd., 195-215 Main Road Martindale, 2092 JOHANNESBURG, P.O. Box 58088 Newville 2114, Tel. +27 11 471 5401, Fax. +27 11 471 5398 South America: Al. Vicente Pinzon, 173, 6th floor, 04547-130 SAO PAULO, SP, Brazil, Tel. +55 11 821 2333, Fax. +55 11 821 2382 Spain: Balmes 22, 08007 BARCELONA, Tel. +34 93 301 6312, Fax. +34 93 301 4107 Sweden: Kottbygatan 7, Akalla, S-16485 STOCKHOLM, Tel. +46 8 5985 2000, Fax. +46 8 5985 2745 Switzerland: Allmendstrasse 140, CH-8027 ZURICH, Tel. +41 1 488 2741 Fax. +41 1 488 3263 Taiwan: Philips Semiconductors, 6F, No. 96, Chien Kuo N. Rd., Sec. 1, TAIPEI, Taiwan Tel. +886 2 2134 2886, Fax. +886 2 2134 2874 Thailand: PHILIPS ELECTRONICS (THAILAND) Ltd., 209/2 Sanpavuth-Bangna Road Prakanong, BANGKOK 10260, Tel. +66 2 745 4090, Fax. +66 2 398 0793 Turkey: Yukari Dudullu, Org. San. Blg., 2.Cad. Nr. 28 81260 Umraniye, ISTANBUL, Tel. +90 216 522 1500, Fax. +90 216 522 1813 Ukraine: PHILIPS UKRAINE, 4 Patrice Lumumba str., Building B, Floor 7, 252042 KIEV, Tel. +380 44 264 2776, Fax. +380 44 268 0461 United Kingdom: Philips Semiconductors Ltd., 276 Bath Road, Hayes, MIDDLESEX UB3 5BX, Tel. +44 181 730 5000, Fax. +44 181 754 8421 United States: 811 East Arques Avenue, SUNNYVALE, CA 94088-3409, Tel. +1 800 234 7381, Fax. +1 800 943 0087 Uruguay: see South America Vietnam: see Singapore Yugoslavia: PHILIPS, Trg N. Pasica 5/v, 11000 BEOGRAD, Tel. +381 11 62 5344, Fax.+381 11 63 5777 For all other countries apply to: Philips Semiconductors, International Marketing & Sales Communications, Building BE-p, P.O. Box 218, 5600 MD EINDHOVEN, The Netherlands, Fax. +31 40 27 24825 Internet: http://www.semiconductors.philips.com (c) Philips Electronics N.V. 1999 SCA 64 All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner. The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license under patent- or other industrial or intellectual property rights. Printed in The Netherlands 115002/00/03/pp12 Date of release: 1999 May 20 Document order number: 9397 750 05952