Infineon Technologies BB 565-02V E7902

Overview

BB 565-02V E7902 from NXP Semiconductors is a silicon hyperabrupt junction varactor diode optimized for UHF-TV tuner applications, featuring 1.8 pF capacitance at 28 V, 10:1 capacitance ratio (VR = 1 V / 28 V), and 0.6 Ω series resistance at 470 MHz. It is housed in an SC79 (SOD-523) package with cathode marking and RoHS-compliant Pb-free construction.

For engineers reviewing the BB 565-02V E7902 datasheet, BB 565-02V E7902 pinout, BB 565-02V E7902 application, or BB 565-02V E7902 equivalent, this device supports precise voltage-controlled tuning in high-frequency front-end circuits where low parasitic inductance (0.6 nH), tight capacitance matching (±0.7% across 4-diode sequence), and wide temperature operation (−55 °C to +150 °C) are critical.

Technical Context

This varactor operates as a voltage-dependent capacitor in resonant tank circuits, where reverse bias voltage directly modulates junction depletion width and thus capacitance. Its hyperabrupt doping profile delivers near-linear C–V slope in the 1–28 V range, enabling stable frequency pulling in UHF tuners.

The SC79 package minimizes parasitic inductance (0.6 nH) and resistance (0.6 Ω), while AEC-Q101 qualification confirms robustness for automotive tuner modules. Capacitance matching is guaranteed via "in-line" assembly of four diodes per batch, ensuring ≤0.7% ∆CT/CT variation under 1–28 V sweep.

Key Specifications

Pinout & Package

SC79 (SOD-523) surface-mount package: 1.2 mm × 0.8 mm × 0.55 mm body, cathode marked by laser etch on top surface, single-anode/single-cathode configuration. Low-profile design minimizes board-level parasitics in RF layouts.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar varactor diode applications.

Compared with BB 565-02V E7902, BBY58-02W offers greater tuning range at VHF but introduces 0.3 nH higher package inductance, while SMV1232-011 matches SC79 form factor but sacrifices 0.2 Ω in series resistance-directly impacting VCO phase noise in high-performance UHF systems.

Availability

BB 565-02V E7902 is available at Aetrix Electronics and suitable for UHF TV tuners, automotive digital radio receivers, and ISM-band wireless sensor nodes requiring stable component supply, tight capacitance matching, and AEC-Q101 reliability assurance.

Supply support for BB 565-02V E7902 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor leader focused on secure connectivity solutions for automotive, industrial, and IoT applications, with headquarters in Eindhoven, Netherlands.

The BB-series varactors belong to NXP's RF discrete portfolio, engineered specifically for high-linearity, low-loss voltage-controlled tuning in broadcast and digital radio front-ends where capacitance stability and matching are system-critical.

FAQ

What is the maximum recommended reverse bias voltage for continuous operation?

The absolute maximum DC reverse voltage is 30 V at TA = 25 °C, with a peak rating of 35 V. Operation above 30 V risks irreversible junction breakdown. Derating is required above 85 °C ambient: VR(max) decreases linearly to 24 V at 150 °C per the manufacturer's thermal derating curve.

Does BB 565-02V E7902 require external matching components in a VCO design?

No external matching is required for basic functionality, but practical VCO designs always include series inductors and shunt resistors to control Q, tuning sensitivity, and harmonic suppression. The diode's 0.6 nH package inductance must be included in total tank inductance calculations during layout.

How is capacitance matching verified across production lots?

Matching is validated using automated RF test fixtures that measure CT across 1–28 V at 1 MHz on four consecutive devices from each wafer lot. Results are logged in AEC-Q101 test reports, with pass criteria set at ∆CT/CT ≤ ±0.7% for BB565/-02V per the "in-line" assembly specification.

Can BB 565-02V E7902 be used in DC-coupled tuning circuits?

Yes, but only if the DC bias network blocks RF leakage paths. The diode's 0.6 Ω series resistance and 0.6 nH inductance form a low-pass impedance that attenuates RF above ~300 MHz when DC-coupled. For best UHF performance, AC coupling via a series capacitor (≥100 pF) is strongly recommended.