Overview
The BB181,115 is a VHF (Very High Frequency) variable capacitance diode, also known as a varactor diode, manufactured by NXP Semiconductors. This component is designed for precise capacitance control in high-frequency signal processing applications. It is part of the BB181 series and is packaged in a SOD-523 (SC-79) surface mount device (SMD) case.
The diode is characterized by its ability to vary its capacitance in response to changes in the applied reverse voltage, making it suitable for tuning circuits, voltage-controlled oscillators (VCOs), and other applications requiring dynamic capacitance adjustment.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Capacitance Cd Max @ Vr F | VR = 0.5 V | 8 | - | 17 | pF |
| Capacitance @ VR2 | VR = 28 V | 0.7 | - | 1.055 | pF |
| Capacitance Ratio Min Cvr1/Cvr2 | f = 1 MHz | 12 | - | 16 | - |
| Forward Current If(AV) | - | - | - | 20 | mA |
| Repetitive Reverse Voltage Vrrm Max | - | - | - | 30 | V |
| Operating Temperature Max | - | - | - | 150 | °C |
| Operating Temperature Min | - | - | - | -55 | °C |
| Diode Case Style | - | - | - | SOD-523 (SC-79) | - |
| No. of Pins | - | - | - | 2 Pin | - |
| Termination Type | - | - | - | Surface Mount Device (SMD) | - |
Key Features
- Variable Capacitance: The BB181,115 offers a variable capacitance range from 8 pF to 17 pF at 0.5 V and 0.7 pF to 1.055 pF at 28 V, making it suitable for dynamic capacitance control.
- High Frequency Operation: Designed for very high frequency (VHF) applications, this diode is ideal for tuning circuits and voltage-controlled oscillators (VCOs).
- Compact Packaging: The SOD-523 (SC-79) surface mount package is compact and suitable for modern high-density circuit designs.
- Wide Operating Temperature Range: The diode operates over a temperature range of -55°C to +150°C, ensuring reliability in various environmental conditions.
- Low Reverse Current: The diode has a low reverse current, typically less than 10 nA at 30 V, which is beneficial for low power consumption applications.
Applications
- Tuning Circuits: The variable capacitance of the BB181,115 makes it ideal for use in tuning circuits where dynamic capacitance adjustment is required.
- Voltage-Controlled Oscillators (VCOs): This diode is commonly used in VCOs to control the frequency of oscillation based on an applied voltage.
- RF and Microwave Circuits: The high frequency characteristics of the BB181,115 make it suitable for use in RF and microwave circuits.
- Filter Circuits: It can be used in filter circuits where the capacitance needs to be adjusted dynamically.
- Phase-Locked Loops (PLLs): The diode can be used in PLLs to provide the necessary capacitance for frequency control.
Q & A
- What is the BB181,115 used for?
The BB181,115 is a variable capacitance diode used for precise capacitance control in high-frequency signal processing applications, such as tuning circuits, VCOs, and RF circuits.
- What is the capacitance range of the BB181,115?
The capacitance range is from 8 pF to 17 pF at 0.5 V and from 0.7 pF to 1.055 pF at 28 V.
- What is the maximum forward current of the BB181,115?
The maximum forward current is 20 mA.
- What is the maximum repetitive reverse voltage of the BB181,115?
The maximum repetitive reverse voltage is 30 V.
- What is the operating temperature range of the BB181,115?
The operating temperature range is from -55°C to +150°C.
- Is the BB181,115 RoHS compliant?
According to some sources, the RoHS compliance status of the BB181,115 is unknown or not explicitly stated, but it is listed as lead-free in some distributor information.
- What package type does the BB181,115 come in?
The BB181,115 comes in a SOD-523 (SC-79) surface mount device (SMD) package.
- Where can I find the datasheet for the BB181,115?
The datasheet can be found on the NXP Semiconductors website, as well as on distributor websites such as Digi-Key, Newark Electronics, and IC-Components.
- What are some common applications of the BB181,115?
Common applications include tuning circuits, VCOs, RF and microwave circuits, filter circuits, and phase-locked loops (PLLs).
- How do I check the stock and lead times for the BB181,115?
Stock availability and lead times can be checked on the distributor's comparison pages or by contacting the distributor directly).
