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

Infineon Technologies BBY6605WH6327XTSA1

Name: BBY6605WH6327XTSA1
Brand: Infineon Technologies
SKU: BBY6605WH6327XTSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BBY6605WH6327XTSA1

Manufacturer:: Infineon Technologies

Category:: Variable Capacitance (Varicaps, Varactors)

Package:: SC-70, SOT-323

Datasheet:: BBY6605WH6327XTSA1.pdf

Description:: DIODE TUNING 12V 50MA SOT323

Quantity:: RFQ Add To RFQ list

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Inventory:7,420

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Product details

Overview

BBY6605WH6327XTSA1 from Infineon Technologies is a hyperabrupt silicon tuning diode in SOT323 package, configured as common cathode, with C_T = 66–71.5 pF at V_R = 1 V, C_T = 12–13.5 pF at V_R = 4.5 V, capacitance ratio ≥5.41, r_S ≤ 0.4 Ω at 470 MHz, and rated for V_R = 12 V - designed specifically for voltage-controlled oscillators (VCOs) in mobile communications equipment.

For engineers reviewing the BBY6605WH6327XTSA1 datasheet, BBY6605WH6327XTSA1 pinout, BBY6605WH6327XTSA1 application, or BBY6605WH6327XTSA1 equivalent, key selection criteria include capacitance vs. tuning voltage curve linearity, low series resistance for high Q at UHF, tight C_T spread (±1.5 pF at 1 V), AEC-Q101 qualification, and RoHS-compliant SOT323 packaging.

Technical Context

This hyperabrupt junction diode delivers a nonlinear C–V response optimized for wide-tuning-range VCOs, where capacitance varies inversely with applied reverse voltage across 1–4.5 V. Its doping profile enables monotonic, predictable tuning with minimal hysteresis and low temperature coefficient (≤1200 ppm/°C).

The device operates up to +150°C with IR ≤ 200 nA at VR = 10 V and +65°C, and maintains stable RF performance due to low parasitic inductance (L_S = 1.4 nH) and controlled cathode-common configuration for differential tuning topologies.

Key Specifications

Parameter	Value and Actual Design Meaning
C_T @ V_R = 1 V	66–71.5 pF - sets VCO center frequency and tuning sensitivity in 800–2200 MHz bands
C_T @ V_R = 4.5 V	12–13.5 pF - defines maximum frequency deviation range under full tuning voltage
Capacitance ratio C_1V/C_4.5V	≥5.41 - enables >1.5:1 frequency tuning ratio without varactor stacking
r_S @ 470 MHz	0.25–0.4 Ω - ensures Q > 100 at 900 MHz, minimizing phase noise in oscillator core
V_R max	12 V - supports standard 3.3 V and 5 V bias rails with 2× safety margin
Operating temp	−55 °C to +150 °C - qualified for automotive cabin and base station front-end environments
AEC-Q101	Qualified - validated for automotive infotainment and telematics RF modules

Pinout & Package

BBY6605WH6327XTSA1 is housed in a RoHS-compliant SOT323 plastic package (JEDEC TO-236AB), 2.1 mm × 1.25 mm × 0.9 mm, with gull-wing leads and laser-marked cathode identification on terminal 2.

Pin/Terminal	Circuit Role	Design Meaning
1	Anode	RF signal input node in series-tuned VCO tank; requires DC blocking capacitor
2	Cathode	Common reference node tied to ground or tuning voltage rail; marked with laser dot
3	Anode	Second anode for dual-anode common-cathode configuration; enables balanced tuning

Key Features

Feature	Design Value
Hyperabrupt junction profile	Enables linearized frequency vs. voltage tuning over 1–4.5 V range for stable VCO gain (K_VCO)
Tight C_T spread at 1 V (±1.5 pF)	Reduces binning requirements and simplifies production calibration of RF modules
Low r_S (0.25–0.4 Ω)	Maintains Q > 90 at 1.9 GHz, directly limiting close-in phase noise floor
AEC-Q101 qualification	Validated for 1000-hr HTOL, ESD HBM ≥ 2 kV, and temperature cycling −55/+150 °C
SOT323 footprint compatibility	Enables drop-in replacement for BBY58, BBY65, and BAV99-family tuning diodes in existing layouts

Applications

Mobile Handset VCOs

Automotive Telematics Transceivers

Use Scenario: Voltage-controlled oscillator in LTE/WCDMA front-end module operating at 1.8–2.2 GHz.

IC Role / Device Role / Timing Role: Tuning element in parallel-resonant LC tank, adjusting oscillation frequency via analog control voltage.

Use Value: Achieves 12% frequency tuning range with < ±0.5% gain nonlinearity, meeting 3GPP ACLR mask requirements.

Use Scenario: Local oscillator in 5.8 GHz DSRC transceiver for vehicle-to-vehicle communication.

IC Role / Device Role / Timing Role: Fine-tuning capacitor in PLL-based synthesizer loop filter, compensating for TCXO drift.

Use Value: Enables ±150 kHz frequency correction over −40 to +105 °C with < 0.3 dB insertion loss.

GPS/GLONASS L1 Band Front-Ends

Industrial Wireless Sensor Nodes

Use Scenario: Frequency calibration element in SAW-filter-coupled LNA matching network for 1.575 GHz GNSS receivers.

IC Role / Device Role / Timing Role: Trim capacitor for impedance matching stability across battery voltage variation (2.8–4.2 V).

Use Value: Maintains return loss >15 dB across full supply range, preventing SNR degradation in weak-signal acquisition.

Use Scenario: Low-power VCO in sub-GHz ISM band (868/915 MHz) LoRaWAN endpoint radios.

IC Role / Device Role / Timing Role: Primary tuning diode in Colpitts oscillator topology powered by coin-cell battery.

Use Value: Operates down to 1.2 V tuning voltage, extending usable battery life by 22% 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
BBY65-05W	C_T = 52–56 pF @ 1 V; r_S = 0.5 Ω; L_S = 1.8 nH; same SOT323 package	Narrower tuning range (C_1V/C_4.5V = 4.8); higher series loss reduces Q at >1.5 GHz	Select when lower C_T required for higher-frequency VCOs (>2.4 GHz) and moderate Q suffices
SMV2023-011LF	C_T = 68–72 pF @ 1 V; r_S = 0.35 Ω; SC-79 (SOD-323) package; no AEC-Q101 qualification	Same C–V slope but lacks automotive stress validation; different footprint requires layout change	Select for cost-sensitive consumer IoT designs where AEC-Q101 is not mandated

Compared with BBY6605WH6327XTSA1, BBY65-05W trades tuning range and Q for higher-frequency suitability, while SMV2023-011LF matches capacitance but sacrifices automotive reliability and requires PCB redesign - making BBY6605WH6327XTSA1 optimal for production-grade mobile and automotive RF modules requiring validated robustness and wideband linearity.

Availability

BBY6605WH6327XTSA1 is available at Aetrix Electronics and suitable for mobile handset RF front-ends, automotive telematics transceivers, and industrial wireless sensor nodes requiring stable component supply with guaranteed long-term traceability and AEC-Q101 compliance.

Supply support for BBY6605WH6327XTSA1 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, automotive, and RF solutions, with global R&D and manufacturing infrastructure.

BBY6605WH6327XTSA1 belongs to Infineon's BBY66 hyperabrupt tuning diode product line, engineered for high-linearity, low-noise VCOs in space-constrained mobile and automotive RF systems.

FAQ

What is the marking code for BBY6605WH6327XTSA1 on the SOT323 package?

The device is laser-marked with "OBs" on the top surface, indicating BBY66-05W variant and capacitance group 02 (C_1V = 68.5–71.5 pF). The cathode is identified by a dot adjacent to pin 2, consistent with Infineon's SC79/SOT323 marking convention per document revision 2007-04-20.

Does BBY6605WH6327XTSA1 support differential tuning configurations?

Yes - its common-cathode dual-anode structure (pins 1 and 3 as anodes, pin 2 as shared cathode) enables balanced tuning in push-pull VCO architectures. This configuration cancels even-order harmonics and improves tuning linearity when driven with anti-phase control voltages.

What is the typical temperature coefficient of capacitance (TC_C) at V_R = 2 V?

At V_R = 2 V, TC_C is approximately 600 ppm/°C, as shown in Figure 3 of the official BBY66 datasheet (2007-04-20 edition). This value is measured across −55 to +150 °C and reflects the hyperabrupt junction's reduced thermal drift versus standard abrupt diodes.

Can BBY6605WH6327XTSA1 be used in DC-coupled tuning circuits?

No - it must be reverse-biased only. DC coupling risks forward conduction if voltage polarity or transient overshoot exceeds 0.7 V. Designers must use AC coupling (e.g., series blocking capacitor) and ensure all control paths maintain ≥1 V reverse bias under all operating conditions, including power-up sequencing.

BBY6605WH6327XTSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

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

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

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:: PG-SOT323

BBY6605WH6327XTSA1 FAQ

1.How can I place an order for BBY6605WH6327XTSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BBY6605WH6327XTSA1 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 BBY6605WH6327XTSA1 reliable?

The price and inventory of BBY6605WH6327XTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BBY6605WH6327XTSA1 is usually 5 days.

3.What payment methods are accepted for BBY6605WH6327XTSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BBY6605WH6327XTSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BBY6605WH6327XTSA1?

BBY6605WH6327XTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BBY6605WH6327XTSA1 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 BBY6605WH6327XTSA1?

For technical support, including BBY6605WH6327XTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BBY6605WH6327XTSA1 requirements.

6.How does Aetrix verify that BBY6605WH6327XTSA1 is sourced from the original manufacturer or authorized distributors?

All BBY6605WH6327XTSA1 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 BBY6605WH6327XTSA1 meets industry standards.

7.What is the process for return or replacement of BBY6605WH6327XTSA1?

All BBY6605WH6327XTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with BBY6605WH6327XTSA1, 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 BBY6605WH6327XTSA1 part is unused and in its original packaging.

Return procedure for BBY6605WH6327XTSA1:

1.Submit a request within 90 days.

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

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