Infineon Technologies BB837E6327

Overview

BB837E6327 from Infineon Technologies is a silicon tuning diode (varactor) designed for satellite TV tuner front-ends, featuring 6.0–7.2 pF capacitance at 1 V reverse bias, 12.7:1 capacitance ratio (1 V/28 V), and 1.5 Ω series resistance at 470 MHz. It operates from –55 °C to +150 °C in SOD323 package and supports high-frequency VCO and RF filter tuning.

For engineers reviewing the BB837E6327 datasheet, BB837E6327 pinout, BB837E6327 application, or BB837E6327 equivalent, key selection criteria include capacitance vs. voltage linearity, low r_S for Q-factor preservation, thermal stability of C_T, and matching tolerance across production lots in SAT tuner PLL loops.

Technical Context

This varactor diode functions as a voltage-controlled capacitor in resonant circuits, where reverse bias voltage directly modulates junction capacitance. Its SCD80-compatible SOD323 package enables high-density RF layout, and the "in-line" matching assembly ensures ≤5% inter-device capacitance deviation across 1–28 V range.

The device exhibits monotonic C_T(V_R) response from 1 V to 28 V at 1 MHz, with normalized capacitance variation ≤±2.5% over –30 °C to +100 °C at fixed bias, and IR ≤200 nA at 30 V/85 °C - critical for low-drift VCO bias networks.

Key Specifications

Pinout & Package

BB837E6327 is housed in an SOD323 (SCD80) surface-mount plastic package with cathode-marked anode-cathode polarity. The package measures 1.7 mm × 0.8 mm × 0.7 mm and features gull-wing leads compatible with standard reflow profiles.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BAT15-02W and BBY52-02W, BB837E6327 uniquely balances mid-range capacitance (6–7 pF), high C-ratio (>12:1), and ultra-low r_S (1.5 Ω), making it optimal for Ku-band SAT tuner VCOs where both tuning range and phase noise performance are constrained.

Availability

BB837E6327 is available at Aetrix Electronics and suitable for satellite LNB modules, digital TV front-ends, and automotive GNSS antenna tuning requiring stable component supply across extended temperature ranges and high-volume production cycles.

Supply support for BB837E6327 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, and automotive ICs, with global manufacturing and R&D centers.

BB837E6327 belongs to Infineon's high-frequency tuning diode product line, engineered specifically for satellite and digital broadcast receiver applications demanding precision C-V linearity and thermal robustness.

FAQ

What is the maximum reverse voltage rating for BB837E6327?

The absolute maximum reverse voltage is 30 V DC at 25 °C, with a peak reverse voltage of 35 V for short-duration pulses (R ≥ 5 kΩ). Exceeding 30 V continuously risks irreversible junction breakdown and capacitance drift, especially above 85 °C where leakage rises significantly.

Does BB837E6327 require special PCB layout considerations?

Yes - its SOD323 package demands minimized cathode trace inductance: keep cathode pad directly connected to solid RF ground plane with multiple vias, limit anode trace length to <1 mm, and avoid routing near noisy digital lines to prevent VCO pulling. Thermal relief on pads should be avoided to ensure mechanical stability during reflow.

How does capacitance matching impact BB837E6327 usage in differential VCOs?

With ≤5% ∆C_T/C_T across matched sequences, BB837E6327 enables precise symmetry in push-pull VCO topologies. This matching reduces even-order harmonics and common-mode phase noise, allowing differential tuning without per-unit calibration - critical for high-volume SAT receiver manufacturing.

Is BB837E6327 RoHS compliant and lead-free?

Yes - BB837E6327 is Pb-free and fully RoHS compliant (2011/65/EU), with matte tin-plated terminations and halogen-free molding compound. The SOD323 package meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1), permitting unlimited floor life at ≤30 °C/60% RH.