DISCRETE SEMICONDUCTORS DATA SHEET alfpage M3D152 BB212 AM variable capacitance double diode Product specification Supersedes data of April 1992 File under Discrete Semiconductors, SC01 1996 May 03 Philips Semiconductors Product specification AM variable capacitance double diode FEATURES BB212 PINNING • Leaded plastic package PIN • C8: 19 pF; ratio: 29. APPLICATIONS DESCRIPTION 1 anode (a1) 2 common cathode 3 anode (a2) • Electronic tuning in AM radio applications • VCO. handbook, halfpage 1 2 3 DESCRIPTION 1 The BB212 is a variable capacitance double diode with a common cathode, fabricated in planar technology, and encapsulated in the TO-92 variant leaded plastic package. 3 2 MAM223 Fig.1 Simplified outline (TO-92 variant) and symbol. LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134). SYMBOL PARAMETER MIN. MAX. UNIT Per diode VR continuous reverse voltage − 12 V IF continuous forward current − 100 mA Tstg storage temperature −55 +100 °C Tj operating junction temperature −55 +85 °C 1996 May 03 2 Philips Semiconductors Product specification AM variable capacitance double diode BB212 ELECTRICAL CHARACTERISTICS Tj = 25 °C; unless otherwise specified. SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT VR = 10 V; see Fig.3 − − 50 nA VR = 10 V; Tj = 85 °C; see Fig.3 − − 300 nA 2.5 Ω Per diode IR reverse current rs diode series resistance f = 500 MHz; note 1 Cd diode capacitance see Figs 2 and 4 C d ( 0.5V ) ---------------------C d ( 8V ) capacitance ratio VR = 0.5 V; f = 1 MHz 500 − 620 pF VR = 3 V; f = 1 MHz 140 − 280 pF VR = 5.5 V; f = 1 MHz 40 − 90 pF VR = 8 V; f = 1 MHz − − 22 pF 22.5 − − f = 1 MHz Note 1. VR is the value at which Cd = 500 pF. MATCHING PROPERTIES ADDITIONAL TOLERANCE (see Fig.5) The capacitance of the two diodes in their common package may differ within certain limits. The total, relative capacitance difference between the two diodes in one package may be found in Fig.5. The anode a1 or a2 with the higher capacitance at VR = 3 V, is identified by a white dot. In the range of VR = 0.5 V to 8 V the following additional tolerances are valid. S = S < 2% for VR = 0.5 to 3 V S < 4% for VR = 3 to 5.5 V S < 6% for VR = 5.5 to 8 V. BASIC TOLERANCE The relative deviation of the capacitance value at VR = 0.5 V is maximum 3.5%. C1 is the capacitance of a1 when a1 > a2. C1 is the capacitance of a2 when a2 > a1. C 1 ( 0.5V ) – C 2 ( 0.5 V ) k = -------------------------------------------------------------- = <3.5% C 2 ( 0.5 V ) 1996 May 03 C1 C ------- V R – ------1- 0.5 V C2 C2 3 Philips Semiconductors Product specification AM variable capacitance double diode BB212 GRAPHICAL DATA MGC814 750 handbook, full pagewidth Cd (pF) 500 250 0 10−1 1 10 VR (V) f = 1 MHz. Fig.2 Diode capacitance as a function of reverse voltage; typical values. MGC809 10 3 handbook, halfpage MLC815 10 3 handbook, halfpage IR (nA) TC d (K−1) 10 4 102 10 0 20 40 60 80 10 5 10 1 100 o Tj ( C) Fig.4 Fig.3 Reverse current as a function of junction temperature; maximum values. 1996 May 03 4 1 10 VR (V) 102 Temperature coefficient of diode capacitance as a function of reverse voltage; typical values. Philips Semiconductors Product specification AM variable capacitance double diode MGC811 20 handbook, halfpage S (%) 16 12 8 4 0 0 2 4 6 8 10 VR (V) Fig.5 1996 May 03 Capacitance matching as a function of reverse voltage; typical values. 5 BB212 Philips Semiconductors Product specification AM variable capacitance double diode BB212 PACKAGE OUTLINE handbook, full pagewidth 0.40 min 4.2 max 5.2 max 1.6 12.7 min 0.48 0.40 1 4.8 max 2.54 2 3 0.66 0.56 2.0 max (1) MBC014 - 1 Dimensions in mm. (1) Terminal dimensions within this zone are uncontrolled to allow for flow of plastic and terminal irregularities. Fig.6 TO-92 variant. 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 6