Infineon Technologies BB659C02VH7908XTSA1

Overview

BB659C02VH7908XTSA1 from Infineon Technologies is a silicon hyperabrupt junction varactor diode optimized for VHF TV and VTR tuner applications, featuring 36.5–42 pF capacitance at 1 V reverse bias, 2.4–2.75 pF at 28 V, 14.2–15.3:1 capacitance ratio (1 V/28 V), 0.6 nH series inductance, and 0.6–0.7 Ω series resistance at 470 MHz.

For engineers reviewing the BB659C02VH7908XTSA1 datasheet, BB659C02VH7908XTSA1 pinout, BB659C02VH7908XTSA1 application, or BB659C02VH7908XTSA1 equivalent, key selection criteria include tuning range linearity, high-frequency Q-factor, thermal stability of capacitance, and matching tolerance across multi-diode arrays in broadcast front-end designs.

Technical Context

This varactor operates as a voltage-controlled capacitor in resonant tank circuits, where reverse bias voltage directly modulates junction depletion width to achieve precise frequency tuning. Its hyperabrupt doping profile ensures near-linear C–V response over 1–28 V, critical for wideband VHF channel selection.

The SC79 package enables compact placement in high-density tuner modules, with low parasitic inductance (0.6 nH) and resistance (≤0.7 Ω) preserving Q-factor above 100 MHz. Capacitance matching ≤0.5% across 4-diode sequences supports balanced differential tuning architectures.

Key Specifications

Pinout & Package

BB659C02VH7908XTSA1 is housed in the SC79 surface-mount package (1.3 × 0.7 × 0.5 mm), featuring a single anode-cathode configuration with cathode marked by a laser-etched bar on the top surface. The package supports reflow soldering per JEDEC J-STD-020 and is RoHS-compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BB659C02VH7908XTSA1, the BB659C02VH7908XTMA1 offers identical performance in higher-volume packaging, while BB639C02VH7908XTSA1 trades tuning range for improved UHF efficiency-enabling optimized band segmentation in dual-band tuner architectures.

Availability

BB659C02VH7908XTSA1 is available at Aetrix Electronics and suitable for VHF TV tuners, VTR channel selectors, FM radio local oscillators, and broadcast signal generator calibration requiring stable component supply across extended temperature and long-lifecycle programs.

Supply support for BB659C02VH7908XTSA1 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

Infineon Technologies AG is a German semiconductor manufacturer specializing in power management, RF, automotive, and industrial control ICs and discrete devices, with global manufacturing and R&D centers.

BB659C02VH7908XTSA1 belongs to Infineon's BB6xxC hyperabrupt varactor family, designed specifically for high-linearity, wide-tuning-range analog RF front-ends in broadcast and professional video equipment.

FAQ

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

The absolute maximum DC reverse voltage is 30 V at 25 °C, with a peak rating of 35 V for transient conditions (R ≥ 5 kΩ). Operation above 28 V reduces capacitance to ≤2.75 pF and increases sensitivity to voltage noise; sustained bias >30 V risks junction breakdown and irreversible degradation.

How does temperature affect capacitance stability across the operating range?

Capacitance exhibits a negative temperature coefficient: −10⁻⁴ to −10⁻³ /°C depending on bias voltage. At 1 V bias, TCc ≈ −3.2 × 10⁻⁴ /°C; at 28 V, it drops to −1.1 × 10⁻⁴ /°C. Full −55 °C to +150 °C operation is validated, with <±1.2% total capacitance shift over that range.

Can BB659C02VH7908XTSA1 be used in series or parallel configurations?

Yes - parallel connection doubles capacitance with matched units (≤0.5% spread), preserving linearity; series connection halves capacitance but degrades C–V linearity due to voltage division mismatch. For series use, strict binning and thermal coupling are required to maintain tracking within ±2% across temperature.

Is this device qualified for automotive applications?

No - BB659C02VH7908XTSA1 is not AEC-Q200 qualified. While its −55 °C to +150 °C rating meets automotive ambient requirements, it lacks stress test validation (e.g., temperature cycling, humidity bias, board flex) required for automotive ECUs or infotainment tuners.