Infineon Technologies BB640E6327HTSA1

Overview

BB640E6327HTSA1 from Infineon Technologies is a silicon hyperabrupt junction varactor diode in SOD323 package, rated for 30 V reverse voltage, with capacitance range 2.8–76 pF at 1 MHz (VR = 1–28 V), capacitance ratio CT1/CT28 ≥ 19.5, and series resistance ≤ 1.15 Ω at CT = 12 pF / 100 MHz - used in VHF TV and VTR tuner LC resonant circuits for precise frequency tuning.

For engineers reviewing the BB640E6327HTSA1 datasheet, BB640E6327HTSA1 pinout, BB640E6327HTSA1 application, or BB640E6327HTSA1 equivalent, key selection criteria include tunable capacitance range, VR rating, temperature coefficient of capacitance, series resistance at RF frequencies, and SOD323 thermal and mounting compatibility in compact tuner modules.

Technical Context

This hyperabrupt junction varactor exhibits a nonlinear C–V curve optimized for wide-tuning-range VHF oscillators and filters. Its capacitance varies from 76 pF at 1 V to 2.8 pF at 28 V reverse bias, delivering CT1/CT28 ≥ 19.5 and CT2/CT25 ≥ 15 - enabling high linearity in frequency vs. tuning voltage response.

Designed for operation from –55 °C to +150 °C, it maintains low leakage (IR ≤ 200 nA at 30 V / 85 °C) and stable RF performance up to 100 MHz, with temperature coefficient of capacitance (TCc) specified across VR and temperature to support stable VCO design in consumer tuner applications.

Key Specifications

Pinout & Package

SOD323 surface-mount plastic package (2-pin, cathode-banded); dimensions: 1.7 mm × 1.25 mm × 0.95 mm; JEDEC MO-203AA compliant; RoHS-compliant, lead-free termination.

Key Features

Applications

Equivalent & Alternatives

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

Compared with BBY52-02W and SMV1232-011, BB640E6327HTSA1 offers the widest capacitance span and highest CT ratio - critical for single-varactor VHF coverage - while maintaining lower rS and tighter ΔCT/CT tolerance for production consistency in tuner modules.

Availability

BB640E6327HTSA1 is available at Aetrix Electronics and suitable for VHF TV tuners, VTR channel selectors, and portable FM radio receivers requiring stable component supply, tight capacitance matching, and high-temperature reliability.

Supply support for BB640E6327HTSA1 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 quality certification to ISO/TS 16949 and IECQ QC 080000.

The BB640 belongs to Infineon's RF varactor diode product line, engineered specifically for high-linearity, wide-tuning-range VHF/UHF frequency synthesis in cost-sensitive consumer tuner applications.

FAQ

What is the maximum reverse voltage rating for BB640E6327HTSA1?

The absolute maximum reverse voltage rating is 30 V DC at TA = 25 °C, with a peak reverse voltage of 35 V under R ≥ 5 kΩ conditions. Exceeding 30 V continuously risks irreversible junction breakdown; derating is recommended above 85 °C per the datasheet's temperature coefficient curves.

How does capacitance matching (ΔCT/CT ≤ 2.5%) benefit production tuner designs?

This specification ensures unit-to-unit capacitance variation stays within ±2.5% at identical bias points (e.g., VR = 1 V and 28 V), directly reducing calibration time and yield loss in high-volume VHF tuner assembly - particularly critical for automated alignment of oscillator center frequency and bandwidth.

Can BB640E6327HTSA1 be used in UHF applications above 300 MHz?

While its capacitance is characterized up to 100 MHz, the SOD323 package parasitics and rising rS above that frequency limit effective Q-factor and tuning linearity beyond ~250 MHz. For dedicated UHF designs, Infineon's SMV1232 series offers optimized performance above 400 MHz.

Is BB640E6327HTSA1 compatible with lead-free reflow profiles?

Yes - it is RoHS-compliant and qualified for standard lead-free reflow (J-STD-020D, peak 260 °C, 10 s max). The SOD323 package withstands thermal cycling without delamination, and the die attach and wire bond meet IPC-A-610 Class 2 requirements for consumer electronics.