Overview
The BB181 is a variable capacitance diode, also known as a varactor diode, fabricated in planar technology and encapsulated in the ultra small plastic SMD package SOD523 (SC-79). This device is designed for applications requiring voltage-controlled capacitance, particularly in the VHF frequency range. The BB181 is characterized by its excellent linearity and small package size, making it suitable for a variety of electronic tuning and voltage-controlled oscillator applications.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Reverse Voltage (VR) | - | - | 30 | V | |
| Forward Current (IF) | - | - | 20 | mA | |
| Storage Temperature (Tstg) | - | -55 | 150 | °C | |
| Junction Temperature (Tj) | - | -55 | 150 | °C | |
| Reverse Current (IR) at VR = 30 V, Tj = 25 °C | - | - | 10 | nA | |
| Reverse Current (IR) at VR = 30 V, Tj = 85 °C | - | - | 200 | nA | |
| Diode Series Resistance (rs) at f = 470 MHz, Cd = 9 pF | - | - | 3 | Ω | |
| Diode Capacitance (Cd) at VR = 0.5 V, f = 1 MHz | 8 | - | 17 | pF | |
| Diode Capacitance (Cd) at VR = 28 V, f = 1 MHz | 0.7 | - | 1.055 | pF | |
| Capacitance Ratio (Cd(0.5V)/Cd(28V)) at f = 1 MHz | 12 | - | 16 | - |
Key Features
- Excellent linearity
- Ultra small plastic SMD package (SOD523/SC-79)
- High capacitance ratio (Cd(0.5V)/Cd(28V)) of up to 16
- Low diode series resistance (rs) of up to 3 Ω at f = 470 MHz
- Wide operating temperature range from -55 °C to 150 °C
Applications
- Electronic tuning in satellite tuners
- Tunable coupling
- Voltage Controlled Oscillators (VCO)
Q & A
- What is the BB181? The BB181 is a variable capacitance diode, also known as a varactor diode, used for voltage-controlled capacitance applications.
- What package type does the BB181 use? The BB181 is encapsulated in the ultra small plastic SMD package SOD523 (SC-79).
- What is the maximum reverse voltage for the BB181? The maximum reverse voltage is 30 V.
- What is the maximum forward current for the BB181? The maximum forward current is 20 mA.
- What is the operating temperature range for the BB181? The operating temperature range is from -55 °C to 150 °C.
- What are some common applications of the BB181? Common applications include electronic tuning in satellite tuners, tunable coupling, and Voltage Controlled Oscillators (VCO).
- What is the capacitance ratio of the BB181? The capacitance ratio (Cd(0.5V)/Cd(28V)) is up to 16.
- What is the typical diode series resistance of the BB181? The typical diode series resistance (rs) is up to 3 Ω at f = 470 MHz.
- Is the BB181 RoHS compliant? Yes, the BB181 is RoHS compliant.
- What is the storage temperature range for the BB181? The storage temperature range is from -55 °C to 150 °C.
