BB149A,115

BB149A UHF variable capacitance diode Rev. 4 5 September 2011 Product data sheet 1. Product profile 1.1 General description The BB149A is a variable capacitance diode, fabricated in planar technology and encapsulated in the SOD323 very small SMD plastic package. The excellent matching performance is achieved by gliding matching and a Direct Matching Assembly (DMA) procedure. 1.2 Features and benefits Excellent linearity Excellent matching to 2 % DMA Very small SMD plastic package C : 2.1 pF C to C ratio: 9 d(28V) d(1V) d(28V) Low series resistance. 1.3 Applications Electronic tuning in UHF television tuners 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. 3. Ordering information Table 2. Ordering information Type number Package Name Description Version BB149A SC-76 plastic surface mounted package 2 leads SOD323BB149A NXP Semiconductors UHF variable capacitance diode 4. Marking Table 3. Marking Type number Marking code BB149A PL 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 V peak reverse voltage in series with a -35 V RM 10 k resistor 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 V =30V R R see Figure 2 -- 10 nA T =85 C see Figure 2 -- 200 nA j 1 r diode series f = 470 MHz - 0.6 0.75 s resistance C diode f = 1 MHz see Figure 1 and 3 d capacitance V = 1 V 18.22 - 21.26 pF R V = 28 V 1.951 2.1 2.225 pF R capacitance ratio f = 1 MHz - 1.27 - C d1V ---------------- C d2V capacitance ratio f = 1 MHz 8.45 9 10.9 C d1V ------------------ C d28V capacitance ratio f = 1 MHz - 1.05 - C d25V ------------------ C d28V capacitance V =1Vto28V in a -- 2 % R C d ---------- matching sequence of 10 diodes C d (gliding) 1 V is the value at which C =9pF R d BB149A All information provided in this document is subject to legal disclaimers. NXP B.V. 2011. All rights reserved. Product data sheet Rev. 4 5 September 2011 2 of 8