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BB178

NXP
Part Number BB178
Manufacturer NXP
Description VHF variable capacitance diode
Published Jul 12, 2020
Detailed Description BB178 VHF variable capacitance diode Rev. 3 — 5 September 2011 Product data sheet 1. Product profile 1.1 General desc...
Datasheet PDF File BB178 PDF File

BB178
BB178

Overview
BB178 VHF variable capacitance diode Rev.
3 — 5 September 2011 Product data sheet 1.
Product profile 1.
1 General description The BB178 is a planar technology variable capacitance diode, in a SOD523 (SC-79) ultra small 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  Ultra small plastic SMD package  Cd(28V): 2.
6 pF; Cd(1V) to Cd(28V) ratio: 15  Very 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.
Pin 1 2 Pinning Description cathode anode [1] The marking bar indicates the cathode.
3.
Ordering information Simplified outline[1] Symbol 1 2 sym008 Table 2.
Ordering information Type number Package Name Description BB178 SC-79 plastic surface mounted package; 2 leads Version SOD523 NXP Semiconductors BB178 VHF variable capacitance diode 4.
Marking Table 3.
Marking Type number BB178 Marking code 8 5.
Limiting values Table 4.
Limiting values In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol Parameter Conditions Min VR reverse voltage - VRM peak reverse voltage in series with a - 10 k resistor IF forward current - Tstg storage temperature 55 Tj junction temperature 55 Max Unit 32 V 35 V 20 mA +150 C +125 C 6.
Characteristics Table 5.
Characteristics Tj = 25 C unless otherwise specified.
Symbol Parameter Conditions IR reverse current see Figure 2 VR = 30 V VR = 30 V; Tj = 85 C rs diode series f = 100 MHz resistance Cd diode f = 1 MHz; see Figure 1 capacitance and Figure 3 C-----d----1---V---- Cd2V VR = 1 V VR = 28 V capacitance ratio f = 1 MHz C-----d----1---V------ capacitance ratio f = 1 MHz C d  28 V  C-----d----2---5---V--- capacitance ratio f = 1 MHz C d  28 V ...


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