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| Philips Semiconductors Product specification Damper diode fast, high-voltage FEATURES * Low forward volt drop * Low Forward recovery voltage * Fast switching * Soft recovery characteristic * High thermal cycling performance * Isolated mounting tab BY479X-1700 SYMBOL QUICK REFERENCE DATA VR = 1700 V VF 1.2 V Vfr 19 V IFWM = 10 A IFRM 100 A tfr 300 ns k 1 a 2 GENERAL DESCRIPTION Glass-passivated double diffused rectifier diode featuring fast forward recovery and low forward recovery voltage. The device is intended for use in multi-sync monitor deflection circuits up to 64kHz. The device is designed to withstand transient reverse voltages up to 1700V. The BY479X series is supplied in the conventional leaded SOD113 package. PINNING PIN 1 2 tab DESCRIPTION cathode anode isolated SOD113 case 1 2 LIMITING VALUES Limiting values in accordance with the Absolute Maximum System (IEC 134). SYMBOL VRSM VRRM VRWM IFWM IFRM IFSM PARAMETER Peak non-repetitive reverse voltage during flash-over of picture tube Peak repetitive reverse voltage Crest working reverse voltage Peak working forward current1 Peak repetitive forward current Peak non-repetitive forward current Storage temperature Operating junction temperature CONDITIONS MIN. t = 3.5 s; f = 64kHz f = 64kHz; Ths 126 C t = 100 s t = 10 ms t = 8.3 ms sinusoidal; Tj = 150 C prior to surge; with reapplied VRWM(max) -40 MAX. 1700 1700 1300 10 100 100 110 150 150 UNIT V V V A A A A C C Tstg Tj 1 Including worst case forward recovery losses, see fig:5. September 1998 1 Rev 1.200 Philips Semiconductors Product specification Damper diode fast, high-voltage ISOLATION LIMITING VALUE & CHARACTERISTIC Ths = 25 C unless otherwise specified SYMBOL Visol PARAMETER R.M.S. isolation voltage from both terminals to external heatsink CONDITIONS f = 50-60 Hz; sinusoidal waveform; R.H. 65% ; clean and dustfree MIN. - BY479X-1700 TYP. MAX. 2500 UNIT V Cisol Capacitance from both terminals f = 1 MHz to external heatsink - 10 - pF THERMAL RESISTANCES SYMBOL Rth j-hs Rth j-a PARAMETER Thermal resistance junction to heatsink Thermal resistance junction to ambient CONDITIONS with heatsink compound without heatsink compound in free air MIN. TYP. 55 MAX. 4.8 5.9 UNIT K/W K/W K/W STATIC CHARACTERISTICS Tj = 25 C unless otherwise stated SYMBOL VF IR PARAMETER Forward voltage Reverse current CONDITIONS IF = 6.5 A IF = 6.5 A; Tj = 125 C VR = VRWMmax VR = VRWMmax; Tj = 125 C MIN. TYP. 0.95 0.85 MAX. 1.3 1.2 0.25 1.0 UNIT V V mA mA DYNAMIC CHARACTERISTICS Tj = 25 C unless otherwise stated SYMBOL Vfr tfr trr Qs PARAMETER Forward recovery voltage Forward recovery time Reverse recovery time Reverse recovery charge CONDITIONS IF = 6.5 A; dIF/dt = 50 A/s IF = 6.5 A; dIF/dt = 50 A/s; VF = 5 V IF = 6.5 A; dIF/dt = 50 A/s; VF = 2 V IF = 1 A; -dIF/dt = 50 A/s; VR 30 V IF = 2 A; -dIF/dt = 20 A/s; VR 30 V MIN. TYP. 12 200 400 250 2.0 MAX. 19 300 350 3.0 UNIT V ns ns ns C September 1998 2 Rev 1.200 Philips Semiconductors Product specification Damper diode fast, high-voltage BY479X-1700 I F 100 Maximum pulse width / us V BY479X-1700 VRRM 10% tfr VF V VF 5V / 2V time fr 1 10 pulse width tp time period T time 10 100 line frequency / kHz Fig.1. Definition of Vfr and tfr Fig.4. Maximum allowable pulse width tp versus line frequency; Basic horizontal deflection circuit. I dI F dt F 6 5 Ptot / W IF IFWM BY479X Ths / C 121.2 trr time 4 3 2 ton time 130.8 f = 64 kHz 140.4 Qs 25% 100% 1 I R 0 0 2 4 IFWM / A 6 8 150 10 Fig.2. Definition of trr and Qs Fig.5. Total dissipation Ptot = f(IFWM); including forward recovery losses; Basic horizontal deflection circuit. VCC 30 IF / A Tj = 125 C Tj = 25 C BY459 20 Line output transformer LY 10 typ max Cf deflection transistor D1 Cs 0 0 0.5 1 VF / V 1.5 2 Fig.3. Basic horizontal deflection circuit. Fig.6. Typical and maximum forward characteristic IF = f(VF); parameter Tj September 1998 3 Rev 1.200 Philips Semiconductors Product specification Damper diode fast, high-voltage BY479X-1700 30 Vfr / V max BY479 10 Transient thermal impedance, Zth j-hs (K/W) 1 20 typ 0.1 10 0.01 P D tp D= tp T t 0 0 50 100 dIF/dt (A/us) 150 200 0.001 1us T 10us 100us 1ms 10ms 100ms 1s pulse width, tp (s) BY459F 10s Fig.7. Typical and maximum Vfr = f(dIF/dt); IF = 6.5A; Tj = 25C Fig.9. Transient thermal impedance Zth = f(tp) 2 trr / us IF = 10 A 5A BY459 1.5 2A 1A 1 0.5 0 1 10 -dIF/dt (A/us) 100 Fig.8. Maximum reverse recovery time trr = f(dIF/dt); parameter Tj; VR30V September 1998 4 Rev 1.200 Philips Semiconductors Product specification Damper diode fast, high-voltage MECHANICAL DATA Dimensions in mm Net Mass: 2 g 3.2 3.0 10.3 max BY479X-1700 4.6 max 2.9 max Recesses (2x) 2.5 0.8 max. depth 2.8 6.4 15.8 19 max. max. seating plane 15.8 max 3 max. not tinned 3 2.5 13.5 min. 1 0.4 M 2 1.0 (2x) 0.6 2.54 5.08 0.5 2.5 0.9 0.7 Fig.10. SOD113; The seating plane is electrically isolated from all terminals. Notes 1. Refer to mounting instructions for F-pack envelopes. 2. Epoxy meets UL94 V0 at 1/8". September 1998 5 Rev 1.200 Philips Semiconductors Product specification Damper diode fast, high-voltage DEFINITIONS Data sheet status Objective specification Product specification Limiting values BY479X-1700 This data sheet contains target or goal specifications for product development. This data sheet contains final product specifications. Preliminary specification This data sheet contains preliminary data; supplementary data may be published later. Limiting values are given 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 this 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. (c) Philips Electronics N.V. 1998 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, it 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. LIFE SUPPORT APPLICATIONS These products are not designed for use in life support appliances, devices or systems where malfunction of these products can be reasonably 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. September 1998 6 Rev 1.200 |
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