# BB 145 - Low-Voltage Variable Capacitance Diode

## Features

· Ultra-small plastic SMD package
· Capacitance (C4): 3 pF; Ratio: 2.1
· Low series resistance

## Applications

· Voltage Controlled Oscillators (VCO)

## Description

· Planar technology variable capacitance diode in SOD523 (SC-79) package

## Electrical Characteristics (Tj = 25°C unless specified)

· Reverse Current (IR):
- V R = 6 V: ≤ 10 nA (at 25°C)
- V R = 6 V, Tj = 85°C: ≤ 200 nA
· Diode Series Resistance (rs):
- f = 470 MHz, V R = 1 V: ≤ 0.6 Ω
· Diode Capacitance (Cd):
- V R = 1 V, f = 1 MHz: 6.4 - 7.4 pF
- V R = 4 V, f = 1 MHz: 2.75 - 3.25 pF
· Capacitance Ratio:
- f = 1 MHz: 2 (typical)

## Limiting Values

· Reverse Voltage (VR): -6 V
· Peak Reverse Voltage (VRM): -8 V (with 10 kΩ resistor)
· Forward Current (IF): -20 mA
· Storage Temperature (Tstg): -55°C to +150°C
· Junction Temperature (Tj): -55°C to +150°C

## Marking Code

· U