Overview
The BB202 is a low-voltage variable capacitance diode manufactured by NXP USA Inc. This diode is fabricated using MBK441 planar technology and is encapsulated in an ultra-small SMD plastic package, specifically the SOD523 package. The BB202 is designed to provide a very steep C/V curve, making it suitable for applications requiring precise capacitance control.
The device features a very low series resistance and is marked with a bar indicating the cathode. It operates within a temperature range of -55°C to 85°C, both for storage and junction temperature, ensuring reliability in various environmental conditions.
Key Specifications
| Parameter | Min. | Typ. | Max. | Unit |
|---|---|---|---|---|
| VR (Continuous Reverse Voltage) | - | - | 6 | V |
| IF (Continuous Forward Current) | - | - | 10 | mA |
| Tstg (Storage Temperature) | -55 | - | 85 | °C |
| Tj (Operating Junction Temperature) | -55 | - | 85 | °C |
| IR (Reverse Current) at VR = 6 V, Tj = 25 °C | - | - | 10 nA | - |
| IR (Reverse Current) at VR = 6 V, Tj = 85 °C | - | - | 100 nA | - |
| rs (Diode Series Resistance) at f = 100 MHz, C = 30 pF | 0.35 | 0.6 | - | Ω |
| Cd (Diode Capacitance) at VR = 0.2 V, f = 1 MHz | 28.2 | - | 33.5 | pF |
| Cd (Diode Capacitance) at VR = 2.3 V, f = 1 MHz | 7.2 | - | 11.2 | pF |
| C0.2 to C2.3 Ratio | 2.5 | - | - | - |
Key Features
- Very steep C/V curve, with C0.2: 30.5 pF and C2.3: 9.5 pF.
- Ultra small SMD plastic package (SOD523).
- Very low series resistance (rs = 0.35 to 0.6 Ω at f = 100 MHz, C = 30 pF).
- High capacitance ratio (C0.2 to C2.3 ratio: min. 2.5).
- Operating temperature range: -55°C to 85°C (Tj).
- RoHS compliant and lead-free.
Applications
- Electronic tuning in FM radio.
- Voltage Controlled Oscillators (VCO).
Q & A
- What is the BB202 variable capacitance diode used for?
The BB202 is used for electronic tuning in FM radio and in Voltage Controlled Oscillators (VCO).
- What is the package type of the BB202 diode?
The BB202 diode is encapsulated in an ultra small SMD plastic package, specifically the SOD523 package.
- What are the key electrical characteristics of the BB202 diode?
The BB202 diode has a continuous reverse voltage of up to 6V, continuous forward current of up to 10mA, and a very low series resistance. It also has a high capacitance ratio with C0.2: 30.5 pF and C2.3: 9.5 pF).
- What is the operating temperature range of the BB202 diode?
The operating temperature range of the BB202 diode is from -55°C to 85°C (Tj)).
- Is the BB202 diode RoHS compliant?
Yes, the BB202 diode is RoHS compliant and lead-free).
- What is the typical reverse current of the BB202 diode at 25°C?
The typical reverse current of the BB202 diode at VR = 6 V and Tj = 25 °C is 10 nA).
- What is the maximum reverse current of the BB202 diode at 85°C?
The maximum reverse current of the BB202 diode at VR = 6 V and Tj = 85 °C is 100 nA).
- What is the series resistance of the BB202 diode?
The series resistance of the BB202 diode is between 0.35 to 0.6 Ω at f = 100 MHz, C = 30 pF).
- How does the capacitance of the BB202 diode change with voltage?
The capacitance of the BB202 diode changes significantly with voltage, with a capacitance ratio of at least 2.5 between C0.2 and C2.3).
- Where can I find detailed specifications and datasheets for the BB202 diode?
Detailed specifications and datasheets for the BB202 diode can be found on the NXP Semiconductors website and through authorized distributors like Digi-Key and X-On Electronics).
