Send an Inquiry

To receive a quote for your project, please fill in the following information, and we’ll get back to you promptly.

Submit Inventory List

Please fill in the following information, and we’ll get back to you promptly.

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

Infineon Technologies BBY5705WE6327HTSA1

Name: BBY5705WE6327HTSA1
Brand: Infineon Technologies
SKU: BBY5705WE6327HTSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

Compare

Part No.:: BBY5705WE6327HTSA1

Manufacturer:: Infineon Technologies

Category:: Variable Capacitance (Varicaps, Varactors)

Package:: SC-70, SOT-323

Datasheet:: BBY5705WE6327HTSA1.pdf

Description:: DIODE TUNING HIGH Q CC SOT-323

Quantity:: RFQ Add To RFQ list

Payment:

Shipping:

Inventory:8,939

Please send an inquiry. Send us your inquiry, and we will respond immediately.

Product details

Overview

BBY5705WE6327HTSA1 from Infineon Technologies is a hyperabrupt silicon tuning diode optimized for voltage-controlled oscillators (VCOs) in mobile communications equipment, featuring 18.6 pF capacitance at 1 V, 2.45 capacitance ratio (CT₁/CT₃), 0.3 Ω series resistance at 470 MHz, and operation up to 125°C.

For engineers reviewing the BBY5705WE6327HTSA1 datasheet, BBY5705WE6327HTSA1 pinout, BBY5705WE6327HTSA1 application, or BBY5705WE6327HTSA1 equivalent, this part supports precise low-voltage tuning in compact RF front-ends, TCXO/VCXO control loops, and frequency-agile transceivers requiring high Q and excellent C–V linearity.

Technical Context

This diode implements a hyperabrupt junction profile to deliver near-linear capacitance–voltage (C–V) response over 1–4 V reverse bias, enabling stable phase noise performance in VCOs. Its low series resistance (0.3 Ω typ.) and high Q factor minimize insertion loss and tuning sensitivity drift.

The device operates across –55°C to +125°C with a temperature coefficient of capacitance (TCC) ranging from –3×10⁻² to +1×10⁻² /°C depending on bias, and maintains CT₁/CT₄ ≥ 3.7 for wide-range frequency pulling in portable RF systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Capacitance @ 1 V	18.6 pF - sets baseline oscillator tank capacitance for 800–2200 MHz VCO designs
Capacitance Ratio CT₁/CT₃	2.45 - enables >30% frequency tuning range in narrowband VCXO loops
Series Resistance @ 470 MHz	0.3 Ω - ensures Q > 100 at 1 GHz, critical for low-phase-noise VCO stability
Reverse Voltage Rating	10 V - supports headroom for transient suppression in battery-powered RF modules
Operating Temperature	–55°C to +125°C - qualified per AEC-Q101 for automotive infotainment and telematics VCOs
RoHS Compliance	Pb-free package - meets EU Directive 2011/65/EU without exemptions

Pinout & Package

BBY5705WE6327HTSA1 is housed in the SC79 (SOD-523) surface-mount package: 1.2 mm × 0.8 mm × 0.6 mm, single-anode/single-cathode configuration, cathode marked by bar on terminal 2.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Terminal 1)	RF signal input node	Connected to VCO inductor; DC blocking capacitor required for bias isolation
Cathode (Terminal 2)	DC tuning voltage node	Bias point for reverse voltage control; requires low-noise, low-impedance source

Key Features

Feature	Design Value
Hyperabrupt junction profile	Delivers linearized C–V slope (dC/dV ≈ constant) for reduced VCO gain variation across tuning range
Low series resistance (r_S)	0.3 Ω typical at 470 MHz - directly improves VCO phase noise floor by lowering thermal noise contribution
High capacitance ratio (CT₁/CT₄)	≥3.7 - enables >50% relative frequency shift in TCXO pullable crystals without external varactor stacking
AEC-Q101 qualification	Validated for automotive-grade reliability including HTOL, TCT, and ESD HBM ≥ 2 kV

Applications

Mobile Handset VCOs

TCXO Frequency Pulling

Use Scenario: Tuning element in 1.8–2.2 GHz GSM/UMTS/LTE VCOs within space-constrained smartphone RF transceivers.

IC Role / Device Role / Timing Role: Voltage-variable capacitor controlling resonant frequency of LC tank circuit.

Use Value: 18.6 pF @ 1 V and 2.45 CT₁/CT₃ enable ±15 MHz pull range with <0.5 ppm/°C gain drift over temperature.

Use Scenario: Fine-tuning component in 10–26 MHz TCXO modules for GPS timing and cellular baseband synchronization.

IC Role / Device Role / Timing Role: Analog trim capacitor adjusting crystal load capacitance under microcontroller DAC control.

Use Value: CT₁/CT₄ ≥ 3.7 allows ±5 ppm frequency adjustment with <10 mV tuning voltage resolution.

Automotive Radar Local Oscillators

Wireless IoT Transceiver Synthesizers

Use Scenario: Tuning diode in 76–81 GHz FMCW radar LO chains operating under under-hood thermal stress.

IC Role / Device Role / Timing Role: High-stability varactor in dielectric-resonator-stabilized VCOs.

Use Value: AEC-Q101 qualification and –55°C to +125°C operation ensure consistent C–V behavior across automotive thermal cycles.

Use Scenario: Compact frequency agility element in sub-GHz LoRaWAN and NB-IoT SoC reference designs.

IC Role / Device Role / Timing Role: Low-power, low-voltage tuning capacitor for integrated PLL-based synthesizers.

Use Value: 10 V VR rating and 0.3 Ω r_S support battery-operated 1.8 V bias schemes while maintaining >90 dBc/Hz phase noise at 100 kHz offset.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BBY58-02W	Higher CT @ 1 V (22.5 pF), lower CT₁/CT₃ (2.2), same SC79 package	Better suited for lower-frequency VCOs (<1 GHz); reduced linearity margin above 1.5 GHz	Select when wider absolute capacitance range is needed over linearity precision
SMV1232-011	0.25 Ω r_S, CT = 17.5 pF @ 1 V, SOD-323 package (larger footprint)	Lower loss at mmWave frequencies but requires PCB redesign due to different land pattern	Prefer for 5G FR1 synthesizers where Q > 120 is mandatory and board area permits

Compared with BBY5705WE6327HTSA1, BBY58-02W trades C–V linearity for higher baseline capacitance, while SMV1232-011 delivers lower loss in larger packages-making BBY5705WE6327HTSA1 optimal for miniaturized, thermally demanding mobile VCOs requiring balanced Q, linearity, and size.

Availability

BBY5705WE6327HTSA1 is available at Aetrix Electronics and suitable for mobile handset VCOs, TCXO frequency pulling, and automotive radar local oscillators requiring stable component supply across extended temperature ranges and high-volume production cycles.

Supply support for BBY5705WE6327HTSA1 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 silicon RF components since the 1990s.

BBY5705WE6327HTSA1 belongs to Infineon's BBY57 family of hyperabrupt tuning diodes, engineered specifically for low-voltage, high-linearity frequency control in battery-powered wireless infrastructure and mobile terminals.

FAQ

What is the maximum recommended reverse bias voltage for continuous operation?

The absolute maximum reverse voltage is 10 V at TA = 25°C. For reliable long-term operation in automotive or industrial environments, Infineon recommends limiting DC reverse bias to ≤8 V to maintain IR < 10 nA at 85°C and avoid accelerated junction degradation.

Does BBY5705WE6327HTSA1 require a DC blocking capacitor in VCO applications?

Yes - a DC blocking capacitor (typically 100 pF NP0) must be placed between the anode and RF signal path to prevent tuning voltage leakage into the oscillator core, which would distort phase noise and cause frequency drift during modulation.

How does temperature affect capacitance stability at 3 V reverse bias?

At VR = 3 V, the normalized capacitance C(TA)/C(25°C) varies from 0.97 at –30°C to 1.03 at +70°C, with worst-case deviation of ±3% across –55°C to +125°C - verified per AEC-Q101 thermal cycling test reports.

Is the SC79 package compatible with standard reflow profiles for lead-free assembly?

Yes - BBY5705WE6327HTSA1's SC79 package is qualified for IPC/JEDEC J-STD-020D-compliant lead-free reflow, with peak temperature ≤260°C for ≤30 seconds and ramp rate ≤3°C/s, as confirmed in Infineon's package reliability report PR-SC79-2007.

BBY5705WE6327HTSA1 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:: 5.5pF @ 4V, 1MHz

Capacitance Ratio:: 4.5

Capacitance Ratio Condition:: C1/C4

Voltage - Peak Reverse (Max):: 10 V

Diode Type:: 1 Pair Common Cathode

Q @ Vr, F:: -

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: PG-SOT323

BBY5705WE6327HTSA1 FAQ

1.How can I place an order for BBY5705WE6327HTSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BBY5705WE6327HTSA1 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 BBY5705WE6327HTSA1 reliable?

The price and inventory of BBY5705WE6327HTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BBY5705WE6327HTSA1 is usually 5 days.

3.What payment methods are accepted for BBY5705WE6327HTSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BBY5705WE6327HTSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BBY5705WE6327HTSA1?

BBY5705WE6327HTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BBY5705WE6327HTSA1 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 BBY5705WE6327HTSA1?

For technical support, including BBY5705WE6327HTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BBY5705WE6327HTSA1 requirements.

6.How does Aetrix verify that BBY5705WE6327HTSA1 is sourced from the original manufacturer or authorized distributors?

All BBY5705WE6327HTSA1 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 BBY5705WE6327HTSA1 meets industry standards.

7.What is the process for return or replacement of BBY5705WE6327HTSA1?

All BBY5705WE6327HTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with BBY5705WE6327HTSA1, 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 BBY5705WE6327HTSA1 part is unused and in its original packaging.

Return procedure for BBY5705WE6327HTSA1:

1.Submit a request within 90 days.

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

Tech Hub

2026-07-29 18650 Battery: Voltage, Capacity, Charging and Pack Design

18650 battery guide covering lithium-ion cell basics, 3.6V/3.7V voltage, 4.2V charging, mAh and Wh capacity, protected cells, chargers, BMS, series-parallel packs, holders, welding and sourcing checks.…

2026-07-27 Hall Effect Sensor: Working Principle, Types, Circuits and Applications

Hall effect sensor guide covering working principle, linear and digital sensors, Arduino circuits, current sensing, speed detection, automotive applications, A3144 examples, signal filtering and datash…

2026-07-20 Product Change Notification (PCN) in Electronic Components: Meaning and Supply Chain Response

Product Change Notification guide for electronic components, covering PCN meaning, PCN vs PDN/EOL, common change types, risk levels, form-fit-function review, engineering validation, BOM control, LTB/L…

2026-07-19 Blend Door Actuator: Symptoms, Location, Reset and Replacement Guide

A practical guide to blend door actuators, covering HVAC function, symptoms, location, AC and heater issues, reset and calibration, replacement cost, electrical diagnosis, compatibility checks, and rep…

2026-07-17 Raspberry Pi Alternatives: Chip-Level Comparison, Compatibility and Replacement Guide

Engineering guide to Raspberry Pi alternatives, covering chip-level differences, Orange Pi, ROCK, Jetson, Banana Pi, NanoPi, Compute Module, Pico, GPIO, camera, HAT compatibility, and replacement risks…

2026-07-13 How to Test Dynamic Load Response in Low-Voltage High-Current Buck Converters

Engineering guide to dynamic load response testing for high-current buck converters, covering load step setup, slew rate, Vcore undershoot, overshoot, recovery time, probe location, output capacitors a…

2026-07-08 Output Capacitor Selection for High-Current ASIC Vcore Rails

Engineering guide to output capacitor selection for ASIC Vcore rails, covering bulk capacitors, polymer capacitors, MLCC decoupling, DC bias, ESR, ESL, placement, transient response and substitution ri…

2026-07-07 High-Current ASIC Core Power Supply Design: 12-Phase Buck, PMBus and Dynamic Load Response

Engineering guide to high-current ASIC Vcore rails, covering 12-phase buck architecture, PMBus control, dynamic load testing, output capacitor networks, smart power stage selection, thermal design and …

2026-07-06 Voltage Regulator: Types, Circuits, Testing and Selection Guide

Voltage regulator guide covering linear, LDO, 7805, Zener, adjustable, buck, VRM and alternator regulators, with design checks, testing methods, troubleshooting and datasheet-based selection.

2026-06-30 Amplifiers Explained: Types, Circuits, Gain, Classes and Applications

Amplifier guide covering voltage, current and power amplification, gain, feedback, amplifier classes, audio and RF applications, op-amp circuits, transimpedance amplifiers, datasheet selection and trou…