d a t a sh eet product speci?cation 1996 sep 20 discrete semiconductors BB146 uhf variable capacitance diode a lfpage m3d049
1996 sep 20 2 philips semiconductors product speci?cation uhf variable capacitance diode BB146 features ultra high ratio excellent matching to 1.6% dma (direct matching assembly) very small plastic smd package c28: 1.9 pf; ratio 20. applications electronic tuning in television tuners with extended uhf range voltage controlled oscillators (vco). description the BB146 is a variable capacitance diode, fabricated in planar technology, and encapsulated in the sod323 very small plastic smd package. the excellent matching performance is achieved by gliding matching and a direct matching assembly procedure. limiting values in accordance with the absolute maximum rating system (iec 134). symbol parameter min. max. unit v r continuous reverse voltage - 30 v i f continuous forward current - 20 ma t stg storage temperature - 55 +150 c t j operating junction temperature - 55 +125 c fig.1 simplified outline (sod323) and symbol. marking code: p6. cathode side indicated by a bar. handbook, 4 columns ka mam130 electrical characteristics t j =25 c; unless otherwise speci?ed. note 1. v r is the value at which c d = 9 pf. symbol parameter conditions min. max. unit i r reverse current v r = 30 v; see fig.3 - 10 na v r = 30 v; t j =85 c; see fig.3 - 200 na r s diode series resistance f = 470 mhz; note 1 - 1.4 w c d diode capacitance v r = 0.5 v; f = 1 mhz; see figs 2 and 4 35 43 pf v r = 28 v; f = 1 mhz; see figs 2 and 4 1.7 2.1 pf capacitance ratio f = 1 mhz 17.5 23 capacitance matching v r = 0.5 to 28 v; in a sequence of 8 diodes (gliding) - 1.6 % c d 0.5v () c d28v () --------------------- - c d d c d ----------
1996 sep 20 3 philips semiconductors product speci?cation uhf variable capacitance diode BB146 graphical data fig.2 diode capacitance as a function of reverse voltage; typical values. f = 1 mhz; t j =25 c . handbook, full pagewidth 0 50 mbh584 10 1 10 20 30 40 10 - 1 10 2 v r (v) c d (pf) fig.3 reverse current as a function of junction temperature; maximum values. handbook, halfpage 100 0 10 mlc816 10 2 10 3 50 i r (na) t ( c) j o t j = 0 to 85 c. fig.4 temperature coefficient of diode capacitance as a function of reverse voltage; typical values. handbook, halfpage mlc815 11010 2 10 3 10 4 10 5 10 1 (k - 1 ) v (v) r d tc
1996 sep 20 4 philips semiconductors product speci?cation uhf variable capacitance diode BB146 package outline definitions 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. data sheet status objective speci?cation this data sheet contains target or goal speci?cations for product development. preliminary speci?cation this data sheet contains preliminary data; supplementary data may be published later. product speci?cation this data sheet contains ?nal product speci?cations. 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 speci?cation 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 speci?cation. dimensions in mm. the marking bar indicates the cathode. fig.5 sod323. handbook, full pagewidth 1.8 1.6 2.7 2.3 0.40 0.25 1.35 1.15 1.00 max 0.25 0.10 mbc672 - 1 0.05 max 0.55 0.40 a 0.2 a m
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