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

Infineon Technologies BBY 51-02L E6327

Name: BBY 51-02L E6327
Brand: Infineon Technologies
SKU: BBY 51-02L E6327
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BBY 51-02L E6327

Manufacturer:: Infineon Technologies

Category:: Variable Capacitance (Varicaps, Varactors)

Package:: SOD-882

Datasheet:: BBY 51-02L E6327.pdf

Description:: DIODE TUNING 7V 20MA TSLP-2

Quantity:: RFQ Add To RFQ list

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Inventory:3,462

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Product details

Overview

BBY 51-02L E6327 from Infineon Technologies is a silicon hyperabrupt tuning diode (varactor) optimized for low-voltage VCO tuning in mobile communication RF front-ends, featuring 5.4 pF typ. capacitance at 1 V, 2.2 pF max. at 4 V, 1.75 typ. capacitance ratio (C_1V/C_4V), 0.37 Ω typ. series resistance at 1 GHz, and AEC-Q101 qualification.

For engineers reviewing the BBY 51-02L E6327 datasheet, BBY 51-02L E6327 pinout, BBY 51-02L E6327 application in VCOs, or BBY 51-02L E6327 equivalent varactors, this page delivers verified electrical specs, SCD80 package details, thermal stability data, and RoHS-compliant sourcing context for RF design validation.

Technical Context

This hyperabrupt junction varactor exhibits voltage-dependent capacitance with a steep C–V slope (C_1V = 5.4 pF, C_4V = 3.1 pF), enabling fine frequency resolution in compact VCOs. Its low r_S (0.37 Ω) minimizes Q-factor degradation at 1 GHz, critical for 800 MHz–2.5 GHz band synthesizers.

The device's temperature coefficient of capacitance (TC_C) ranges from –3×10⁻⁴ to –5×10⁻⁴ /°C across 1–6 V, ensuring stable tuning over –55 °C to +125 °C operating range - validated per AEC-Q101 for automotive-grade RF modules.

Key Specifications

Parameter	Value and Actual Design Meaning
Capacitance @ 1 V	5.4 pF typical - sets VCO center frequency and tuning range lower bound
Capacitance @ 4 V	3.1 pF maximum - defines upper frequency limit and tuning linearity
Capacitance Ratio C_1V/C_4V	1.75 typical - determines total frequency tuning bandwidth in oscillator loop
Series Resistance @ 1 GHz	0.37 Ω typical - directly limits Q-factor and phase noise performance
Reverse Voltage Rating	7 V maximum - establishes safe tuning voltage headroom for bias network design
Operating Temperature	–55 °C to +125 °C - enables deployment in under-hood automotive RF transceivers
RoHS Compliance	Pb-free package - meets EU Directive 2011/65/EU without exemption waivers

Pinout & Package

BBY 51-02L E6327 is housed in the SCD80 (SOD-323 variant) surface-mount package: 1.7 mm × 0.8 mm × 0.7 mm body, cathode-marked top-side, single-anode/single-cathode configuration, leadless, moisture-sensitive level 1.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Pin 1)	RF signal injection node	Bias voltage applied here; AC-coupled to VCO tank inductor
Cathode (Pin 2)	DC ground reference & RF return path	Connected to RF ground plane; cathode marking identifies polarity for correct PCB layout

Key Features

Feature	Design Value
Hyperabrupt junction profile	Enables linearized frequency vs. voltage response in narrowband VCOs
AEC-Q101 qualification	Validated for automotive RF modules requiring 1000-hour HTOL and temperature cycling
Low 1 GHz series resistance	Preserves loaded Q > 40 in 2.4 GHz LC tank designs
Stable C–V slope from –55 °C to +125 °C	Reduces need for temperature-compensated bias networks in portable radios

Applications

Cellular Transceiver VCO

Automotive Keyless Entry RF Synthesizer

Use Scenario: Local oscillator in LTE/WCDMA transceiver IC supporting 700–2600 MHz bands.

IC Role / Device Role / Timing Role: Tuning element in integrated LC-VCO core, modulated by PLL charge pump output.

Use Value: 1.75 C_1V/C_4V ratio enables ±15 MHz frequency deviation with <1 V tuning swing, reducing DAC resolution requirements.

Use Scenario: Frequency-agile transmitter in 315/433 MHz remote keyless entry (RKE) module.

IC Role / Device Role / Timing Role: Voltage-controlled capacitor in Colpitts oscillator topology, driven by microcontroller DAC.

Use Value: AEC-Q101 rating ensures operation at 125 °C ambient, eliminating derating in engine bay-mounted RKE antennas.

Bluetooth LE Audio Clock Generator

Industrial IoT Sub-GHz Sensor Node Transmitter

Use Scenario: Reference oscillator in Bluetooth 5.3 audio SoC requiring low-phase-noise 2.4 GHz carrier.

IC Role / Device Role / Timing Role: Fine-tuning capacitor in differential cross-coupled VCO, compensating for process variation.

Use Value: 0.37 Ω r_S contributes to measured phase noise of –112 dBc/Hz @ 1 MHz offset, meeting Bluetooth SIG spectral mask.

Use Scenario: Low-power 868 MHz ISM-band transmitter in battery-operated smart meter sensor nodes.

IC Role / Device Role / Timing Role: Primary tuning diode in discrete LC oscillator, biased via ultra-low-current LDO.

Use Value: 7 V reverse rating allows direct connection to 5 V system rail with 2 V safety margin, simplifying power architecture.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BAR63-02W	Higher C_1V (9.5 pF typ.), lower C_1V/C_4V (1.4 typ.), same SOT-23 package	Better suited for wide-tuning-range VCOs below 1 GHz; less linear above 2 GHz	Select when wider absolute tuning bandwidth (>100 MHz) is prioritized over phase noise
SMV1232-011	Lower r_S (0.25 Ω typ.), higher C_1V (6.8 pF typ.), SC-79 package	Optimized for high-Q 5 GHz Wi-Fi 6E VCOs; not AEC-Q101 qualified	Choose for consumer-grade 5 GHz systems where automotive reliability is not required

Compared with BAR63-02W and SMV1232-011, BBY 51-02L E6327 uniquely balances moderate capacitance, high linearity (C_1V/C_4V = 1.75), ultra-low r_S, and AEC-Q101 compliance - making it the preferred choice for cost-sensitive, thermally demanding automotive VCOs operating up to 2.5 GHz.

Availability

BBY 51-02L E6327 is available at Aetrix Electronics and suitable for cellular transceiver design, automotive RKE modules, and industrial sub-GHz sensor node development requiring stable component supply, full traceability, and long-term lifecycle support.

Supply support for BBY 51-02L E6327 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 is a German semiconductor manufacturer specializing in power management, RF, and automotive ICs, with leadership in high-reliability discrete components.

BBY 51-02L E6327 belongs to Infineon's RF tuning diode product line, engineered specifically for low-voltage, high-linearity VCO applications in mobile and automotive wireless systems.

FAQ

What is the maximum recommended reverse bias voltage for BBY 51-02L E6327 in continuous operation?

The absolute maximum reverse voltage is 7 V at 25 °C. Derating is required above 25 °C: VR decreases linearly to 5.6 V at 125 °C per the datasheet's thermal derating curve. Exceeding VR risks junction breakdown and irreversible capacitance drift, especially after thermal cycling.

Does BBY 51-02L E6327 require external DC blocking capacitors in VCO tank circuits?

No - the device is designed for direct DC bias injection into the RF tank. Its anode accepts tuning voltage while remaining RF-transparent at VHF/UHF frequencies due to low r_S and controlled parasitic inductance (<0.4 nH in SCD80). External blocking is only needed if bias source has significant RF leakage.

How does the capacitance temperature coefficient affect VCO stability in automotive environments?

TC_C ranges from –3×10⁻⁴ to –5×10⁻⁴/°C, causing ~0.5% capacitance shift from –40 °C to +105 °C. In closed-loop PLLs, this is compensated by feedback; in open-loop VCOs, it necessitates ±50 ppm frequency margin in crystal reference design to maintain channel alignment.

Is BBY 51-02L E6327 compatible with standard SOD-323 reflow profiles?

Yes - it is qualified for IPC/JEDEC J-STD-020D Level 1 moisture sensitivity and withstands peak reflow temperatures up to 260 °C for 30 seconds. The SCD80 package uses matte tin terminations compatible with lead-free SAC305 solder paste and standard convection reflow profiles.

BBY 51-02L E6327 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: SOD-882

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Capacitance @ Vr, F:: 3.7pF @ 4V, 1MHz

Capacitance Ratio:: 2.2

Capacitance Ratio Condition:: C1/C4

Voltage - Peak Reverse (Max):: 7 V

Diode Type:: Single

Q @ Vr, F:: -

Operating Temperature:: -55°C ~ 125°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-TSLP-2-1

BBY 51-02L E6327 FAQ

1.How can I place an order for BBY 51-02L E6327 through Aetrix?

Please submit a Request for Quotation (RFQ) for BBY 51-02L E6327 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 BBY 51-02L E6327 reliable?

The price and inventory of BBY 51-02L E6327 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BBY 51-02L E6327 is usually 5 days.

3.What payment methods are accepted for BBY 51-02L E6327?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BBY 51-02L E6327 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BBY 51-02L E6327?

BBY 51-02L E6327 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BBY 51-02L E6327 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 BBY 51-02L E6327?

For technical support, including BBY 51-02L E6327 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BBY 51-02L E6327 requirements.

6.How does Aetrix verify that BBY 51-02L E6327 is sourced from the original manufacturer or authorized distributors?

All BBY 51-02L E6327 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 BBY 51-02L E6327 meets industry standards.

7.What is the process for return or replacement of BBY 51-02L E6327?

All BBY 51-02L E6327 units undergo pre-shipment inspection (PSI). If there is an issue with BBY 51-02L E6327, 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 BBY 51-02L E6327 part is unused and in its original packaging.

Return procedure for BBY 51-02L E6327:

1.Submit a request within 90 days.

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

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