DISCRETE SEMICONDUCTORS DATA SHEET alfpage M3D049 BB148 VHF variable capacitance diode Product specification Supersedes data of 1996 May 03 1998 Sep 15 Philips Semiconductors Product specification VHF variable capacitance diode BB148 FEATURES • Excellent linearity • Excellent matching to 1% DMA • Very small plastic SMD package handbook, 4 columns • C28: 2.6 pF; ratio: 15 k a • Low series resistance. MAM130 APPLICATIONS • Electronic tuning in VHF television tuners, band B up to 460 MHz Marking code: P8. Cathode side indicated by a bar. • VCO. Fig.1 Simplified outline (SOD323) and symbol. DESCRIPTION The BB148 is variable capacitance diode, fabricated in planar technology, and encapsulated in the SOD323 very small plastic SMD package. LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL The excellent matching performance is achieved by gliding matching and a direct matching assembly procedure. The diodes are delivered on tape in several matched groups and are also available unmatched upon request. The unmatched type, BB158 has the same specification. PARAMETER MIN. MAX. UNIT VR continuous reverse voltage − 30 V IF continuous forward current − 20 mA Tstg storage temperature −55 +150 °C Tj operating junction temperature −55 +125 °C ELECTRICAL CHARACTERISTICS Tj = 25 °C unless otherwise specified. SYMBOL IR PARAMETER reverse current CONDITIONS 10 nA VR = 30 V; Tj = 85 °C; see Fig.3 − 200 nA − 0.9 Ω diode series resistance f = 100 MHz; note 1 diode capacitance ∆C d ---------Cd capacitance matching VR = 1 V; f = 1 MHz; see Figs 2 and 4 36.8 41.8 pF VR = 28 V; f = 1 MHz; see Figs 2 and 4 2.4 2.75 pF f = 1 MHz 14.5 − VR = 0.5 to 28 V; in a sequence of 4 diodes (gliding) − 1 % VR = 0.5 to 28 V; in a sequence of 20 diodes (gliding) − 2 % Note 1. VR is the value at which Cd = 12 pF. 1998 Sep 15 UNIT − rs capacitance ratio MAX. VR = 30 V; see Fig.3 Cd C d ( 1V ) -------------------C d ( 28V ) MIN. 2 Philips Semiconductors Product specification VHF variable capacitance diode BB148 GRAPHICAL DATA MLC266 50 handbook, full pagewidth Cd (pF) 40 30 20 10 0 10 1 1 10 10 2 V R (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 1998 Sep 15 Reverse current as a function of junction temperature; maximum values. 3 Temperature coefficient of diode capacitance as a function of reverse voltage; typical values. 102 Philips Semiconductors Product specification VHF variable capacitance diode BB148 PACKAGE OUTLINE SOD323 Plastic surface mounted package; 2 leads A A1 , Q c Lp v M A HE A D 1 E bp 2 (1) 0 1 2 mm scale DIMENSIONS (mm are the original dimensions) UNIT A A1 max. bp mm 1.1 0.8 + 0.05 − 0.05 0.40 0.25 c D E HE Lp Q v 0.25 0.10 1.8 1.6 1.35 1.15 2.7 2.3 0.45 0.15 0.25 0.15 0.2 Note 1. The marking bar indicates the cathode. OUTLINE VERSION REFERENCES IEC JEDEC EIAJ SOD323 1998 Sep 15 EUROPEAN PROJECTION ISSUE DATE 98-09-14 4 Philips Semiconductors Product specification VHF variable capacitance diode BB148 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. 1998 Sep 15 5 Philips Semiconductors Product specification VHF variable capacitance diode BB148 NOTES 1998 Sep 15 6 Philips Semiconductors Product specification VHF variable capacitance diode BB148 NOTES 1998 Sep 15 7 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. 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