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

Infineon Technologies BB565H7902XTSA1

Name: BB565H7902XTSA1
Brand: Infineon Technologies
SKU: BB565H7902XTSA1
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: BB565H7902XTSA1

Manufacturer:: Infineon Technologies

Category:: Variable Capacitance (Varicaps, Varactors)

Package:: SC-80

Datasheet:: BB565H7902XTSA1.pdf

Description:: DIODE VAR CAP 30V 20MA SCD80

Quantity:: RFQ Add To RFQ list

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Inventory:2,693

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Product details

Overview

BB565H7902XTSA1 from Infineon Technologies is a silicon hyperabrupt junction varactor diode in SC79 (SOD-323-compatible) package, designed for UHF-TV tuner voltage-controlled oscillator (VCO) and RF filter tuning circuits. It delivers 18.5–21.5 pF capacitance at 1 V, 1.8–2.2 pF at 28 V, 9–11× capacitance ratio (CT₁/CT₂₈), <0.7% capacitance matching across 4-diode sequences, and 0.6 Ω series resistance at 470 MHz.

For engineers reviewing the BB565H7902XTSA1 datasheet, BB565H7902XTSA1 pinout, BB565H7902XTSA1 application, or BB565H7902XTSA1 equivalent, key selection criteria include UHF tuning linearity, low RF loss in 470–862 MHz bands, tight capacitance matching for multi-stage filter alignment, and AEC-Q101 qualification for automotive tuner modules.

Technical Context

This hyperabrupt varactor uses graded doping to achieve near-linear C–V response in the 1–28 V tuning range, enabling stable frequency pulling in UHF VCOs. Its low 0.6 nH series inductance and 0.6 Ω series resistance minimize Q degradation above 470 MHz.

The device is fabricated using Infineon's "in-line" matching assembly process, ensuring ≤0.7% ∆CT/CT across four diodes in sequence-critical for bandpass filter bank calibration and multi-tuner synchronization in digital TV front-ends.

Key Specifications

Parameter	Value and Actual Design Meaning
Capacitance @ 1 V	18.5–21.5 pF - sets low-end VCO frequency and input impedance matching at tuning voltage minimum
Capacitance @ 28 V	1.8–2.2 pF - defines high-frequency limit and tuning range span in UHF (470–862 MHz)
Capacitance Ratio CT₁/CT₂₈	9–11 - enables ≥3.5:1 frequency ratio in VCO designs without harmonic distortion
Series Resistance @ 470 MHz	0.6 Ω typ - maintains Q > 120 at 700 MHz, minimizing phase noise in local oscillator paths
Capacitance Matching (∆CT/CT)	≤0.7% over 4-diode sequence - ensures consistent filter center frequency across dual-tuner or diversity reception systems
Reverse Voltage Rating	30 V DC, 35 V peak - supports standard 28 V tuning rails with 12% margin against transient spikes
Operating Temperature	−55 °C to +150 °C - qualified per AEC-Q101 for under-hood automotive tuner modules

Pinout & Package

SC79 (SOD-323-compatible) surface-mount package: cathode-marked anode-cathode configuration, 1.25 mm × 0.8 mm footprint, 0.35 mm height, tape-and-reel packaging (8,000 pcs/reel, 2 mm pitch).

Pin/Terminal	Circuit Role	Design Meaning
Anode (Pin 1)	RF signal reference node	Connected to ground or AC-coupled bias network; low-inductance path critical for VCO loop stability
Cathode (Pin 2)	Tuning voltage input	DC bias terminal for reverse voltage control; must be filtered to suppress supply noise coupling into oscillator core

Key Features

Feature	Design Value
Hyperabrupt junction profile	Enables linearized frequency vs. voltage response in 470–862 MHz TV tuner VCOs
In-line matching assembly	Guarantees ≤0.7% capacitance deviation across 4-device sequences for multi-channel filter alignment
AEC-Q101 qualification	Validated for automotive-grade reliability including temperature cycling, HTRB, and ESD (HBM > 2 kV)
Low 0.6 nH series inductance	Preserves effective Q above 700 MHz, reducing VCO phase noise floor by ≥3 dB vs. standard abrupt diodes

Applications

Digital Terrestrial TV Tuner

Automotive Infotainment Radio

Use Scenario: Front-end RF tuning in DVB-T/T2 receiver modules operating 470–862 MHz.

IC Role / Device Role / Timing Role: Varactor diode providing voltage-controlled capacitance for VCO and bandpass filter resonance adjustment.

Use Value: 9–11× CT ratio and ≤0.7% matching enable single-VCO architectures with ±1.5 MHz channel selectivity and <0.5 dB insertion loss variation across temperature.

Use Scenario: FM/AM/DAB+ radio tuner module in automotive head units exposed to −40 °C to +105 °C ambient.

IC Role / Device Role / Timing Role: AEC-Q101-qualified tuning element in voltage-controlled oscillator and IF tracking filter circuits.

Use Value: Stable C–V curve over −55 °C to +150 °C and 0.6 Ω r_S ensure <±10 kHz frequency drift and <−125 dBc/Hz phase noise at 20 kHz offset.

UHF RFID Reader

Professional Wireless Microphone

Use Scenario: Frequency-agile 865–868 MHz ISM band reader with adaptive antenna matching.

IC Role / Device Role / Timing Role: Tuning capacitor in matching network between PA output and antenna port.

Use Value: Low 0.6 nH L_S and 0.6 Ω r_S maintain >75% power transfer efficiency across full 3 MHz tuning bandwidth.

Use Scenario: 520–694 MHz diversity receiver with real-time channel hopping and interference avoidance.

IC Role / Device Role / Timing Role: Primary varactor in switched-band VCO and image-reject filter banks.

Use Value: Tight capacitance matching allows simultaneous dual-VCO lock with <50 ns switching latency and <0.1 ppm frequency error.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BB565H7902XTMA1	Same die, SCD80 package (1.7 × 0.8 mm); 0.6 nH LS, 0.6 Ω rS, identical C–V curve	Higher thermal mass; suited for reflow profiles with longer dwell time (>60 s at 230 °C)	Select for legacy board layouts with SCD80 footprint or higher-power dissipation requirements
BB545H7902XTSA1	Same SC79 package; lower CT range (14.8–16.4 pF @1 V), 7–8.1× CT₂/CT₂₅ ratio, 0.5% matching over 7-diode sequence	Optimized for narrower tuning range (e.g., FM radio 87–108 MHz) with tighter matching tolerance	Select when system requires higher baseline capacitance and relaxed UHF frequency span

Compared with BB565H7902XTMA1, the XTSA1 offers smaller footprint and faster thermal response; versus BB545H7902XTSA1, it provides wider UHF tuning range and higher CT ratio at the cost of slightly reduced matching precision over longer sequences.

Availability

BB565H7902XTSA1 is available at Aetrix Electronics and suitable for digital TV tuners, automotive infotainment radios, UHF RFID readers, and professional wireless microphone systems requiring stable component supply with AEC-Q101 compliance and tight RF parameter consistency.

Supply support for BB565H7902XTSA1 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 electronics, with leadership in high-reliability discrete components and integrated systems.

BB565H7902XTSA1 belongs to Infineon's BB5xx hyperabrupt varactor family, engineered specifically for high-linearity, low-loss RF tuning in broadcast and wireless infrastructure applications up to 1 GHz.

FAQ

What is the maximum recommended reverse voltage for continuous operation?

The BB565H7902XTSA1 has a rated DC reverse voltage (VR) of 30 V and a peak reverse voltage (VRM) of 35 V. For reliable long-term operation in UHF tuner circuits, Infineon specifies 28 V as the maximum recommended continuous tuning voltage to maintain capacitance stability and avoid accelerated aging under thermal stress.

How does the capacitance matching specification apply in practice?

The ≤0.7% ∆CT/CT matching applies to groups of four BB565H7902XTSA1 diodes selected from the same manufacturing lot and assembled in sequence on the same PCB. This enables precise center-frequency alignment in dual-path RF filters without individual trimming, reducing test time and calibration cost in high-volume TV tuner production.

Is this diode suitable for use in 5G sub-6 GHz front-ends?

No. While the BB565H7902XTSA1 performs well up to 862 MHz, its series resistance (0.6 Ω) and parasitic inductance (0.6 nH) cause Q degradation above 1 GHz. For 3.5 GHz or 5 GHz 5G FR1 front-ends, Infineon's BAV99 or BAR63 families with sub-0.3 Ω rS and optimized SMD packages are recommended instead.

Does the SC79 package support lead-free reflow soldering?

Yes. The BB565H7902XTSA1 is RoHS-compliant and qualified for standard lead-free reflow profiles, including JEDEC J-STD-020D Level 1 (peak temperature 260 °C, 10–30 s dwell). Its SC79 package withstands thermal cycling from −55 °C to +150 °C for ≥1,000 cycles without delamination or parameter shift.

BB565H7902XTSA1 Specifications

Product attributes: Attribute value

Manufacturer:: Infineon Technologies

Series:: -

Package/Case:: SC-80

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Capacitance @ Vr, F:: 2.2pF @ 28V, 1MHz

Capacitance Ratio:: 11.0

Capacitance Ratio Condition:: C1/C28

Voltage - Peak Reverse (Max):: 30 V

Diode Type:: Single

Q @ Vr, F:: -

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SCD-80

BB565H7902XTSA1 FAQ

1.How can I place an order for BB565H7902XTSA1 through Aetrix?

Please submit a Request for Quotation (RFQ) for BB565H7902XTSA1 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 BB565H7902XTSA1 reliable?

The price and inventory of BB565H7902XTSA1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for BB565H7902XTSA1 is usually 5 days.

3.What payment methods are accepted for BB565H7902XTSA1?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for BB565H7902XTSA1 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for BB565H7902XTSA1?

BB565H7902XTSA1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your BB565H7902XTSA1 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 BB565H7902XTSA1?

For technical support, including BB565H7902XTSA1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your BB565H7902XTSA1 requirements.

6.How does Aetrix verify that BB565H7902XTSA1 is sourced from the original manufacturer or authorized distributors?

All BB565H7902XTSA1 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 BB565H7902XTSA1 meets industry standards.

7.What is the process for return or replacement of BB565H7902XTSA1?

All BB565H7902XTSA1 units undergo pre-shipment inspection (PSI). If there is an issue with BB565H7902XTSA1, 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 BB565H7902XTSA1 part is unused and in its original packaging.

Return procedure for BB565H7902XTSA1:

1.Submit a request within 90 days.

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

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