BB148

BB148 VHF variable capacitance diode Rev. 6 2 September 2011 Product data sheet 1. Product profile 1.1 General description The BB148 is a variable capacitance diode, fabricated in planar technology, and encapsulated in the SOD323 (SC-76) very small SMD plastic package. The excellent matching performance is achieved by gliding matching and a Direct Matching Assembly (DMA) 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. 1.2 Features and benefits Excellent linearity Excellent matching to 1 % DMA Very small SMD plastic package C : 2.6 pF C to C ratio: 15 d(28V) d(1V) d(28V) Low series resistance. 1.3 Applications Electronic tuning in VHF television tuners, band B up to 460 MHz Voltage Controlled Oscillators (VCO). 2. Pinning information Table 1. Pinning 1 Pin Description Simplified outline Symbol 1 cathode 1 2 2 anode sym008 1 The marking bar indicates the cathode.BB148 NXP Semiconductors VHF variable capacitance diode 3. Ordering information Table 2. Ordering information Type number Package Name Description Version BB148 SC-76 plastic surface mounted package 2 leads SOD323 4. Marking Table 3. Marking Type number Marking code BB148 P8 5. Limiting values Table 4. Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134). Symbol Parameter Conditions Min Max Unit V reverse voltage - 30 V R I forward current - 20 mA F T storage temperature 55 +150 C stg T junction temperature 55 +125 C j 6. Characteristics Table 5. Characteristics T = 25 C unless otherwise specified. j Symbol Parameter Conditions Min Typ Max Unit I reverse current see Figure 2 R V =30V - - 10 nA R V =30V T =85 C - - 200 nA R j r diode series f=100MHz C =12pF - - 0.9 s d resistance C diode f = 1 MHz see Figure 1 and 3 d capacitance V = 1 V 36.8 - 41.8 pF R V = 28 V 2.4 2.6 2.75 pF R capacitance f = 1 MHz 14.5 15 - C d1V ------------------ ratio C d28V capacitance V = 0.5 V to 28 V in a -- 2 % R C d ---------- matching sequence of 10 diodes C d (gliding) BB148 All information provided in this document is subject to legal disclaimers. NXP B.V. 2011. All rights reserved. Product data sheet Rev. 6 2 September 2011 2 of 8