BB179 NXP

BB179 UHF variable capacitance diode Rev. 3 5 September 2011 Product data sheet 1. Product profile 1.1 General description The BB179 is a planar technology variable capacitance diode, in a SOD523 (SC-79) ultra small plastic SMD 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 Ultra small plastic SMD 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 2 anode 1 2 sym008 1 The marking bar indicates the cathode. 3. Ordering information Table 2. Ordering information Type number Package Name Description Version BB179 SC-79 plastic surface mounted package 2 leads SOD523BB179 NXP Semiconductors UHF variable capacitance diode 4. Marking Table 3. Marking Type number Marking code BB179 9 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 see Figure 2 R V =30V - - 10 nA R V =30V T =85 C - - 200 nA R j 1 r diode series f=470MHz - 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 f=1MHz - 1.27 - C d1V ---------------- ratio C d2V capacitance f = 1 MHz 8.45 9 10.9 C d1V ------------------ ratio C d28V capacitance f=1MHz - 1.05 - C d25V ------------------ ratio C d28V capacitance V = 1 V to 28 V in a -- 2 % R C d ---------- matching sequence of 10 diodes C d (gliding) 1 V is the value at which C = 9 pF R d BB179 All information provided in this document is subject to legal disclaimers. NXP B.V. 2011. All rights reserved. Product data sheet Rev. 3 5 September 2011 2 of 8