DISCRETE SEMICONDUCTORS DATA SHEET M3D176. 1N4148; 1N4448 High-speed diodes May 25. Product specification Supersedes data of 1996 Sep 03

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1 DISCRETE SEMICONDUCTORS DATA SHEET M3D176 Supersedes data of 1996 Sep May 25

2 FEATURES Hermetically sealed leaded glass SOD27 (DO-35) package High switching speed: max. 4 ns General application Continuous reverse voltage: max. 75 V Repetitive peak reverse voltage: max. 75 V Repetitive peak forward current: max. 450 ma. APPLICATIONS High-speed switching. DESCRIPTION The 1N4148 and 1N4448 are high-speed switching diodes fabricated in planar technology, and encapsulated in hermetically sealed leaded glass SOD27 (DO-35) packages. handbook, halfpage k The diodes are type branded. MAM246 Fig.1 Simplified outline (SOD27; DO-35) and symbol. a LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT V RRM repetitive peak reverse voltage 75 V V R continuous reverse voltage 75 V I F continuous forward current see Fig.2; note ma I FRM repetitive peak forward current 450 ma I FSM non-repetitive peak forward current square wave; T j =25 C prior to surge; see Fig.4 t=1µs 4 A t=1ms 1 A t=1s 0.5 A P tot total power dissipation T amb =25 C; note mw T stg storage temperature C T j junction temperature 200 C Note 1. Device mounted on an FR4 printed circuit-board; lead length 10 mm May 25 2

3 ELECTRICAL CHARACTERISTICS T j =25 C unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT V F forward voltage see Fig.3 1N4148 I F =10mA 1 V 1N4448 I F = 5 ma V I F = 100 ma 1 V I R reverse current V R = 20 V; see Fig.5 25 na V R = 20 V; T j = 150 C; see Fig.5 50 µa I R reverse current; 1N4448 V R = 20 V; T j = 100 C; see Fig.5 3 µa C d diode capacitance f = 1 MHz; V R = 0; see Fig.6 4 pf t rr reverse recovery time when switched from I F = 10 ma to I R = 60 ma; R L = 100 Ω; measured at I R = 1 ma; see Fig.7 4 ns V fr forward recovery voltage when switched from I F =50mA; t r =20 ns; see Fig V THERMAL CHARACTERISTICS SYMBOL PARAMETER CONDITIONS VALUE UNIT R th j-tp thermal resistance from junction to tie-point lead length 10 mm 240 K/W R th j-a thermal resistance from junction to ambient lead length 10 mm; note K/W Note 1. Device mounted on a printed circuit-board without metallization pad May 25 3

4 GRAPHICAL DATA 300 handbook, halfpage MBG handbook, halfpage MBG464 I F (ma) I F (ma) (1) (2) (3) Fig T 200 amb ( o C) Device mounted on an FR4 printed-circuit board; lead length 10 mm. Maximum permissible continuous forward current as a function of ambient temperature. Fig V 2 F (V) (1) T j = 175 C; typical values. (2) T j =25 C; typical values. (3) T j =25 C; maximum values. Forward current as a function of forward voltage handbook, full pagewidth MBG704 I FSM (A) t p (µs) 10 4 Based on square wave currents. T j =25 C prior to surge. Fig.4 Maximum permissible non-repetitive peak forward current as a function of pulse duration May 25 4

5 10 3 handbook, halfpage I R (µa) 10 2 MGD handbook, halfpage C d (pf) 1.0 MGD (1) (2) T j ( o C) V R (V) (1) V R = 75 V; typical values. (2) V R = 20 V; typical values. f = 1 MHz; T j =25 C. Fig.5 Reverse current as a function of junction temperature. Fig.6 Diode capacitance as a function of reverse voltage; typical values May 25 5

6 handbook, full pagewidth R S = 50 Ω I F D.U.T. SAMPLING OSCILLOSCOPE tr 10% t p t I F t rr t V = V R I F x R S R i = 50 Ω MGA881 V R 90% (1) input signal output signal (1) I R = 1 ma. Fig.7 Reverse recovery voltage test circuit and waveforms. I 1 k Ω 450 Ω I 90% V R = 50 S Ω D.U.T. OSCILLOSCOPE R i = 50 Ω V fr 10% MGA882 t r t p t t input signal output signal Fig.8 Forward recovery voltage test circuit and waveforms May 25 6

7 PACKAGE OUTLINE Hermetically sealed glass package; axial leaded; 2 leads SOD27 (1) b D L G 1 L DIMENSIONS (mm are the original dimensions) UNIT b max. D max. G 1 max. L min mm scale mm Note 1. The marking band indicates the cathode. OUTLINE VERSION REFERENCES IEC JEDEC EIAJ EUROPEAN PROJECTION ISSUE DATE SOD27 A24 DO-35 SC DEFINITIONS Data Sheet Status Objective specification Preliminary specification This data sheet contains target or goal specifications for product development. This data sheet contains preliminary data; supplementary data may be published later. 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 May 25 7

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