The BB181 is a variable capacitance diode produced by NXP Semiconductors. It is fabricated in planar technology and encapsulated in the SOD523 (SC-79) ultra small plastic SMD package. Its features include excellent linearity, a small package size, and a capacitance range of 1pF to 14pF. This product can be used in satellite tuners for electronic tuning, tunable coupling, and voltage-controlled oscillators (VCO).
The BB181 is a planar‑technology variable capacitance diode intended for electronic tuning in satellite tuners, tunable coupling and voltage‑controlled oscillators. It offers excellent linearity and is supplied in the ultra‑small SOD523 (SC‑79) surface‑mount package.
The data sheet provides pinning details, ordering codes, limiting temperature values, capacitance ranges, reverse‑current limits and series resistance. Package dimensions are 0.65 mm × 0.34 mm × 0.17 mm. For full specifications and legal notices see the sections below.
| Capacitance range at 0.5 V | 8 – 17 pF |
|---|---|
| Capacitance range at 28 V | 0.7 – 1.055 pF |
| Reverse current (30 V) | 10 nA |
| Diode series resistance (470 MHz, 9 pF) | 3 Ω |
| Capacitance ratio (0.5 V to 28 V) | 12 – 16 |
| Package dimensions (mm) | 0.65 × 0.34 × 0.17 |
The BB181 is supplied in an ultra‑small SOD523 (SC‑79) surface‑mount package.
At 0.5 V the capacitance is 8 – 17 pF, and at 28 V it is 0.7 – 1.055 pF.
The reverse current is limited to 10 nA at a reverse voltage of 30 V.