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Home > Products > Discrete Semiconductor Products > Diodes > Variable Capacitance (Varicaps, Varactors)

Infineon Technologies BBY6605WE6327

Name: BBY6605WE6327
Brand: Infineon Technologies
SKU: BBY6605WE6327
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BBY6605WE6327

Manufacturer:: Infineon Technologies

Category:: Variable Capacitance (Varicaps, Varactors)

Package:: SC-70, SOT-323

Datasheet:: BBY6605WE6327.pdf

Description:: VARIABLE CAPACITANCE DIODE

Quantity:: RFQ Add To RFQ list

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Inventory:9,746

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Product details

Overview

BBY6605WE6327 from Infineon Technologies is a hyperabrupt silicon tuning diode in SOT-323 package, configured as common cathode single diode, with 12 V reverse voltage rating, 66–71.5 pF capacitance at 1 V, and 0.25 Ω typical series resistance at 470 MHz - designed for low-voltage VCO tuning in mobile communication transceivers.

For engineers reviewing the BBY6605WE6327 datasheet, BBY6605WE6327 pinout, BBY6605WE6327 application, or BBY6605WE6327 equivalent, key selection criteria include capacitance ratio (≥5:1), low TCc (<1200 ppm/°C), tight C_1V spread (±1.5 pF), RoHS-compliant SC79/SOT-323 footprint compatibility, and AEC-Q101 qualification for automotive RF modules.

Technical Context

This diode implements a hyperabrupt junction profile to achieve high capacitance ratio (C_1V/C_4.5V ≥ 5) and near-linear C–V slope over 1–4.5 V tuning range. Its low r_S (0.25 Ω typ.) and high Q enable stable oscillator phase noise performance in 800–2500 MHz bands.

Capacitance groups are factory-binned (01: 66–69 pF; 02: 68.5–71.5 pF at 1 V), marked on reel but not orderable by group. Temperature coefficient of capacitance ranges from 0 to 1200 ppm/°C depending on bias, critical for temperature-stable VCO calibration.

Key Specifications

Parameter	Value and Actual Design Meaning
Reverse Voltage (V_R)	12 V - sets maximum tuning voltage headroom for VCO designs without breakdown risk
Capacitance at 1 V (C_T)	66–71.5 pF - defines low-end VCO frequency limit and tank impedance scaling
Capacitance Ratio (C_1V/C_4.5V)	≥5 - enables wide tuning bandwidth (>10% fractional) in compact LC tanks
Series Resistance (r_S)	0.25 Ω typ. at 470 MHz - directly limits Q-factor and phase noise degradation in resonant circuits
Capacitance Tempco (TC_C)	0–1200 ppm/°C - determines required compensation range in temperature-compensated VCOs
Reverse Current (I_R)	≤20 nA at 10 V, 25°C - ensures minimal leakage-induced tuning drift in battery-powered devices
Package	SOT-323 - 2.1 × 1.25 mm footprint compatible with high-density RF PCB layouts

Pinout & Package

SOT-323 package: 3-terminal surface-mount outline with common cathode configuration; terminals are Anode (Pin 1), Cathode (Pin 2), and Cathode (Pin 3). Pin 1 is marked by dot or bevelled edge; Pins 2 and 3 are internally shorted as shared cathode node.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1	Anode	RF signal injection point; reverse-biased during tuning; connects to VCO varactor node
Pin 2	Cathode	DC ground reference and RF return path; tied to system ground plane
Pin 3	Cathode	Redundant cathode terminal for lower inductance grounding and thermal dissipation

Key Features

Feature	Design Value
Hyperabrupt junction profile	Enables >10% fractional tuning bandwidth in sub-3 GHz VCOs without external compensation
Tight C_1V binning (±1.5 pF)	Reduces production calibration time and improves yield in mass-produced RF front-ends
AEC-Q101 qualified	Validated for automotive infotainment and telematics VCOs operating from −40°C to +125°C ambient
Pb-free RoHS-compliant	Meets EU Directive 2011/65/EU and IPC-J-STD-020 moisture sensitivity level 1 (MSL1)

Applications

Mobile Handset VCOs

Automotive Telematics Transceivers

Use Scenario: Tuning element in 1.8–2.2 GHz GSM/UMTS/LTE local oscillator circuits.

IC Role / Device Role / Timing Role: Voltage-controlled capacitor setting instantaneous oscillation frequency via analog tuning voltage.

Use Value: 66–71.5 pF C_1V and 5:1 ratio enable 150 MHz tuning span with <−110 dBc/Hz phase noise at 100 kHz offset.

Use Scenario: Frequency-agile VCO in 77 GHz radar IF synthesis and 5.9 GHz DSRC/WAVE transceivers.

IC Role / Device Role / Timing Role: High-Q varactor supporting fast hop-settling and low spurious emission in FMCW chirp generation.

Use Value: 0.25 Ω r_S and <1200 ppm/°C TC_C maintain EVM <2.5% across −40°C to +105°C operating range.

Portable Wi-Fi 6E Access Points

Industrial IoT Wireless Gateways

Use Scenario: Dual-band (2.4/5/6 GHz) synthesizer tuning in compact M.2 form factor AP modules.

IC Role / Device Role / Timing Role: Low-voltage (1–4.5 V) tuning diode enabling single-supply VCO design with minimal DAC overhead.

Use Value: Low 12 V V_R rating allows use with 3.3 V LDOs; SOT-323 footprint saves >0.8 mm² vs. SOT-23 in multi-VCO layouts.

Use Scenario: LoRaWAN and NB-IoT base station reference oscillators requiring long-term stability.

IC Role / Device Role / Timing Role: Temperature-compensated varactor in oven-controlled crystal oscillator (OCXO) auxiliary tuning loop.

Use Value: Tight C_1V spread (±1.5 pF) reduces calibration lookup table size by 60% versus standard abrupt junction diodes.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BBY65-02W	C_1V = 42–45 pF; r_S = 0.35 Ω typ.; SOT-23 package	Lower capacitance suits higher-frequency VCOs (>2.5 GHz); larger footprint increases parasitic inductance	Select when targeting 3–6 GHz bands and board space permits SOT-23
SMV2023-011LF	C_1V = 52 pF; C_1V/C_4.5V = 4.2; r_S = 0.3 Ω; SC-79 package	Lower ratio limits tuning bandwidth; SC-79 offers better thermal coupling than SOT-323	Prefer for cost-sensitive consumer modules where ±5% frequency tolerance is acceptable

Compared with BBY6605WE6327, BBY65-02W trades capacitance for higher-frequency suitability and larger package, while SMV2023-011LF sacrifices ratio and spread control for lower unit cost - making BBY6605WE6327 optimal for precision 1.8–2.4 GHz automotive and industrial VCOs.

Availability

BBY6605WE6327 is available at Aetrix Electronics and suitable for mobile handset VCOs, automotive telematics transceivers, and portable Wi-Fi 6E access points requiring stable component supply across extended temperature and lifecycle requirements.

Supply support for BBY6605WE6327 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 R&D and wafer fabrication facilities.

BBY6605WE6327 belongs to Infineon's BBY66 hyperabrupt tuning diode product line, engineered specifically for low-voltage, high-Q VCO applications in mobile and automotive wireless systems.

FAQ

What is the marking code for BBY6605WE6327 on the SOT-323 package?

The device is laser-marked with "O1s" or "O2s" on the top surface, indicating capacitance group 01 (66–69 pF) or 02 (68.5–71.5 pF) at 1 V. The cathode is identified by a bevelled edge adjacent to Pin 1, per Infineon's SOT-323 marking layout specification.

Does BBY6605WE6327 require derating above 25°C ambient?

Yes - maximum reverse voltage remains 12 V up to +125°C, but reverse current increases to 200 nA at 65°C and 10 µA at 125°C. For stable VCO operation above 85°C, thermal design must ensure junction temperature stays ≤125°C using PCB copper pour under Pin 2/3.

Can BBY6605WE6327 be used in zero-bias (0 V) tuning configurations?

No - the diode requires minimum 1 V reverse bias to operate within its specified capacitance range. At 0 V, junction depletion is incomplete, causing nonlinear C–V behavior and increased loss; recommended tuning range is 1–4.5 V for monotonic, predictable response.

Is tape-and-reel packaging standardized for BBY6327?

Yes - supplied in 180 mm reels containing 3,000 units at 2 mm pitch, compliant with EIA-481-D standards. Reel orientation follows Infineon's SOT-323 carrier tape spec: component cavity depth 0.65 mm, pocket pitch 2.0 mm, and cover tape peel strength 0.3–0.7 N/15 mm.

BBY6605WE6327 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: SC-70, SOT-323

Packaging:: Bulk

Product Status:: Active

Capacitance @ Vr, F:: 13.5pF @ 4.5V, 1MHz

Capacitance Ratio:: 5.41

Capacitance Ratio Condition:: C1/C4.5

Voltage - Peak Reverse (Max):: 12 V

Diode Type:: 1 Pair Common Cathode

Q @ Vr, F:: -

Operating Temperature:: -55°C ~ 150°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-323

BBY6605WE6327 FAQ

1.How can I place an order for BBY6605WE6327 through Aetrix?

Please submit a Request for Quotation (RFQ) for BBY6605WE6327 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.

2.Are the price and stock information for BBY6605WE6327 reliable?

The price and inventory of BBY6605WE6327 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BBY6605WE6327 is usually 5 days.

3.What payment methods are accepted for BBY6605WE6327?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BBY6605WE6327 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BBY6605WE6327?

BBY6605WE6327 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BBY6605WE6327 order is processed, you will receive an email with the shipment details and tracking number.

Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.

5.How can I obtain technical support or documentation for BBY6605WE6327?

For technical support, including BBY6605WE6327 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BBY6605WE6327 requirements.

6.How does Aetrix verify that BBY6605WE6327 is sourced from the original manufacturer or authorized distributors?

All BBY6605WE6327 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that BBY6605WE6327 meets industry standards.

7.What is the process for return or replacement of BBY6605WE6327?

All BBY6605WE6327 units undergo pre-shipment inspection (PSI). If there is an issue with BBY6605WE6327, returns or replacements are accepted under the following conditions:

1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.

2.The issue is reported within 90 days of delivery.

3.The BBY6605WE6327 part is unused and in its original packaging.

Return procedure for BBY6605WE6327:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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