DISCRETE SEMICONDUCTORS DATA SHEET M3D051 BB909A; BB909B VHF variable capacitance diodes Product specification Supersedes data of April 1992 File under Discrete Semiconductors, SC01 1996 May 03 Philips Semiconductors Product specification VHF variable capacitance diodes BB909A; BB909B FEATURES • Excellent linearity • Matched to 2.5% handbook, halfpage k • Hermetically sealed leaded glass SOD68 (DO-34) package a MAM234 • C28: 2.9 pF; ratio: 13.5 • Low series resistance. Cathode side indicated by a green band on a black body (BB909A and BB909B). Additional red band (BB909A only). APPLICATIONS Fig.1 Simplified outline (SOD68; DO-34) and symbol. • Electronic tuning in VHF television tuners, band B up to 460 MHz • VCO. LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). DESCRIPTION SYMBOL PARAMETER MIN. MAX. UNIT The BB909A, BB909B are variable capacitance diodes, fabricated in planar technology, and encapsulated in hermetically sealed leaded glass SOD68 (DO-34) packages. VR continuous reverse voltage − 30 V IF continuous forward current − 20 mA Tstg storage temperature −55 +150 °C Tj operating junction temperature −55 +100 °C ELECTRICAL CHARACTERISTICS Tj = 25 °C; unless otherwise specified. SYMBOL IR PARAMETER reverse current CONDITIONS MAX. UNIT − − 10 nA VR = 28 V; Tj = 85 °C; see Fig.3 − − 200 nA − − 0.9 Ω VR = 1 V; f = 1 MHz 31 − − pF VR = 3 V; f = 1 MHz − 23 − pF VR = 28 V; f = 1 MHz diode series resistance f = 100 MHz; note 1 Cd diode capacitance see Figs 2 and 4 BB909B TYP. VR = 28 V; see Fig.3 rs BB909A MIN. 2.6 − 3 pF VR = 1 V; f = 1 MHz 33.5 − − pF VR = 3 V; f = 1 MHz − 25 − pF VR = 28 V; f = 1 MHz 2.8 − 3.2 pF C d ( 1V ) -------------------C d ( 28V ) capacitance ratio f = 1 MHz 12 − 15 ∆C d ---------Cd capacitance matching VR = 1 to 28 V − − 2.5 Note 1. VR is the value at which Cd = 30 pF. 1996 May 03 2 % Philips Semiconductors Product specification VHF variable capacitance diodes BB909A; BB909B GRAPHICAL DATA MBE873 50 handbook, full pagewidth Cd (pF) 40 30 20 10 0 10 −1 1 10 10 2 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 TC d (K−1) IR (nA) 10 4 102 10 MLC815 10 3 handbook, halfpage 0 50 o T j ( C) 10 5 10 1 100 1 10 VR (V) Tj = 0 to 85 °C. Fig.4 Fig.3 Reverse current as a function of junction temperature; maximum values. 1996 May 03 3 Temperature coefficient of diode capacitance as a function of reverse voltage; typical values. 102 Philips Semiconductors Product specification VHF variable capacitance diodes BB909A; BB909B PACKAGE OUTLINE (1) (2) 0.55 max 1.6 max 25.4 min 3.04 max 25.4 min MBC040 Dimensions in mm. (1) Cathode side indicated by a green band on a black body (BB909A and BB909B). (2) Additional red band (BB909A only). Fig.5 SOD68 (DO-34). 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. 1996 May 03 4