DISCRETE SEMICONDUCTORS DATA SHEET M3D319 BB145 Low-voltage variable capacitance diode Product specification Supersedes data of 1999 Sep 15 1999 Dec 15 Philips Semiconductors Product specification FEATURES DESCRIPTION • Ultra small plastic SMD package The BB145 is a planar technology variable capacitance diode in a SOD523 (SC-79) package. • C4: 3 pF; ratio: 2.1 • Low series resistance. PINNING APPLICATIONS • Voltage controlled oscillators (VCO). PIN DESCRIPTION 1 cathode 2 anode BB145 handbook, 1 2 columns 2 U Low-voltage variable capacitance diode MBK441 Marking code: U. Orientation of marking code as shown. Cathode side indicated by a bar. Fig.1 Simplified outline (SOD523; SC-79) and symbol. LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT − 6 V − 8 V continuous forward current − 20 mA storage temperature −55 +150 °C operating junction temperature −55 +150 °C VR continuous reverse voltage VRM peak reverse voltage IF Tstg Tj in series with a 10 kΩ resistor ELECTRICAL CHARACTERISTICS Tj = 25 °C unless otherwise specified. SYMBOL PARAMETER IR reverse current rs diode series resistance Cd diode capacitance C d ( 1V ) ---------------C d ( 4V ) capacitance ratio 1999 Dec 15 CONDITIONS MIN. TYP. MAX. UNIT VR = 6 V; see Fig.3 − − 10 VR = 6 V; Tj = 85 °C; see Fig.3 − − 200 nA f = 470 MHz; VR = 1 V − − 0.6 Ω VR = 1 V; f = 1 MHz; see Figs 2 and 4 6.4 − 7.4 pF VR = 4 V; f = 1 MHz; see Figs 2 and 4 2.75 − 3.25 pF 2 − − f = 1 MHz 2 nA Philips Semiconductors Product specification Low-voltage variable capacitance diode BB145 GRAPHICAL DATA MCD782 10 handbook, full pagewidth Cd (pF) 8 6 4 2 0 10−1 1 10 VR (V) f = 1 MHz; Tj = 25 °C. Fig.2 Diode capacitance as a function of reverse voltage; typical values. MLC816 10 3 handbook, halfpage MGS352 10−3 handbook, halfpage TCd IR (K−1) (nA) 102 10 0 50 o T j ( C) 10−4 10−1 100 Fig.4 Fig.3 Reverse current as a function of junction temperature; maximum values. 1999 Dec 15 3 1 VR (V) 10 Temperature coefficient of diode capacitance as a function of reverse voltage; typical values. Philips Semiconductors Product specification Low-voltage variable capacitance diode BB145 PACKAGE OUTLINE Plastic surface mounted package; 2 leads SOD523 A c v M A HE A D 1 E 0 0.5 1 mm scale 2 DIMENSIONS (mm are the original dimensions) bp (1) UNIT A bp c D E HE v mm 0.7 0.5 0.35 0.25 0.2 0.1 1.3 1.1 0.9 0.7 1.7 1.5 0.15 Note 1. The marking bar indicates the cathode. OUTLINE VERSION REFERENCES IEC JEDEC SOD523 EIAJ EUROPEAN PROJECTION SC-79 ISSUE DATE 98-11-25 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 Dec 15 4 Philips Semiconductors Product specification Low-voltage variable capacitance diode NOTES 1999 Dec 15 5 BB145 Philips Semiconductors Product specification Low-voltage variable capacitance diode NOTES 1999 Dec 15 6 BB145 Philips Semiconductors Product specification Low-voltage variable capacitance diode NOTES 1999 Dec 15 7 BB145 Philips Semiconductors – a worldwide company Argentina: see South America Australia: 3 Figtree Drive, HOMEBUSH, NSW 2140, Tel. +61 2 9704 8141, Fax. +61 2 9704 8139 Austria: Computerstr. 6, A-1101 WIEN, P.O. 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