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Diodes Incorporated ZV832BV2TA
- Part No.:
- ZV832BV2TA
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-79, SOD-523
- Datasheet:
-
ZV832BV2TA.pdf
- Description:
- DIODE VARACTOR 25V 22PF SOD-523
- Quantity:
- Payment:
- Shipping:
Inventory:9,497
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Product details
Overview
ZV832BV2TA from Zetex Semiconductors is a silicon hyperabrupt varactor diode optimized for voltage-controlled frequency tuning in precision oscillators. It delivers 22.0 pF nominal capacitance at 2 V, 5.0–6.5 capacitance ratio (C₂/C₂₀), and low reverse leakage (≤20 nA), enabling low-phase-noise VCXO/TCXO designs in SOT23 package.
For engineers reviewing the ZV832BV2TA datasheet, ZV832BV2TA pinout, ZV832BV2TA application, or ZV832BV2TA equivalent, key selection criteria include its 25 V reverse breakdown rating, ±400 ppm/°C temperature coefficient of capacitance, high Q (>200 @ 50 MHz), and SOT23-compatible footprint for RF filtering and tuning circuits.
Technical Context
ZV832BV2TA is a single-die, cathode-marked hyperabrupt junction varactor designed for steep, linearized C–V response in narrow-band VCOs and oscillator tanks. Its doping profile yields controlled capacitance slope (dC/dV) and minimal hysteresis across 0–20 V tuning range.
The device operates with reverse bias only; forward conduction is prohibited beyond 200 mA. Thermal stability is ensured by a -55°C to +150°C operating range and low IR-induced self-heating, critical for phase noise-sensitive timing applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Capacitance @ 2 V | 22.0 pF nominal - sets center frequency and tuning range in LC tank resonators |
| Capacitance Ratio C₂/C₂₀ | 5.0–6.5 - enables ≥2.2:1 frequency tuning bandwidth in VCXOs |
| Q Factor @ 50 MHz | >200 - minimizes insertion loss and phase noise in oscillator feedback paths |
| Reverse Leakage @ 20 V | ≤20 nA - ensures stable bias point and low drift in high-impedance tuning networks |
| Breakdown Voltage | 25 V - defines maximum safe tuning voltage and margin against transient overvoltage |
| Temp. Coeff. of C | +300 to +400 ppm/°C - quantifies thermal drift impact on oscillator stability over temperature |
| Package | SOT23 - surface-mount compatible with automated RF assembly and thermal pad reflow profiles |
Pinout & Package
Supplied in SOT23 package (JEDEC TO-236AB), with cathode indicated by a bar marking on lead 3. The package supports standard reflow soldering and provides mechanical robustness for handheld RF modules.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Anode) | AC-coupled tuning node | Connected to RF ground via DC-blocking capacitor; carries AC tuning signal superimposed on DC bias |
| 2 (Cathode) | DC bias input | Receives stable, filtered tuning voltage; must be decoupled to minimize noise injection into oscillator core |
| 3 (Cathode) | Common cathode terminal | Electrically tied to Pin 2; used for mechanical anchoring and thermal dissipation in SOT23 layout |
Key Features
| Feature | Design Value |
|---|---|
| Hyperabrupt junction profile | Delivers steeper dC/dV slope than abrupt junctions-enabling tighter frequency resolution per volt in TCXOs |
| Closely controlled CV tolerance | ±5% capacitance spread (ZV832B grade)-reduces binning and calibration effort in production oscillator trimming |
| Low IR (200 pA typ.) | Minimizes bias current error in high-Z tuning networks-critical for ultra-low-phase-noise OCXO reference stages |
| High Q at 50 MHz | Reduces resonator losses-directly improves oscillator close-in phase noise (10 Hz–1 kHz offset) |
Applications
| VCXO Frequency Tuning | TCXO Temperature Compensation |
|---|---|
Use Scenario: Fine-tuning of crystal oscillator output frequency in telecom base station reference clocks. IC Role / Device Role / Timing Role: Voltage-variable reactance element in Pierce oscillator feedback loop, adjusting resonant frequency under DAC-controlled bias. Use Value: Enables ±50 ppm pull range with sub-0.1 ppm/V linearity, meeting GR-1244-CORE stability requirements. | Use Scenario: Compensating crystal frequency drift over -40°C to +85°C in GPS receiver front-end local oscillators. IC Role / Device Role / Timing Role: Tuning element in analog temperature-compensation network, paired with thermistor and op-amp. Use Value: Matches crystal's parabolic C–T curve via hyperabrupt slope-reducing residual error to <±0.5 ppm across full range. |
| Wireless Transceiver VCO | Paging System IF Filter Tuning |
Use Scenario: Wideband VCO core in 802.11a/n RF transceivers requiring 5.15–5.825 GHz coverage. IC Role / Device Role / Timing Role: Primary varactor in LC-VCO tank, biased between 0.5–12 V to achieve 15% frequency span. Use Value: High Q and low IR suppress broadband phase noise floor-meeting -110 dBc/Hz @ 1 MHz offset spec. | Use Scenario: Adaptive bandpass filter center frequency alignment in legacy POCSAG paging receivers. IC Role / Device Role / Timing Role: Tuning capacitor in switched-capacitor or ceramic filter bank, adjusted by microcontroller DAC. Use Value: Tight C₂/C₂₀ ratio ensures monotonic tuning without mode-hopping-maintaining 12 dB stopband rejection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar varactor diode applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SMV2023-011LF | Lower C₂ = 15.5 pF, higher Q = 250 @ 50 MHz, same SOT23 package | Narrower tuning range but superior phase noise in low-power VCOs | Select when priority is close-in phase noise over absolute tuning bandwidth |
| BBY58-02W | Higher C₂ = 27 pF, lower C₂/C₂₀ = 4.0, SOD-323 package | Greater capacitance for low-frequency VCOs; smaller footprint but reduced power handling | Choose for sub-2 GHz designs where board space is constrained and 25 V rating is sufficient |
Compared with SMV2023-011LF and BBY58-02W, ZV832BV2TA offers the optimal balance of mid-range capacitance (22 pF), wide 5.0–6.5 tuning ratio, and proven 25 V ruggedness-making it preferred for industrial-grade TCXOs and multi-band wireless infrastructure VCOs.
Availability
ZV832BV2TA is available at Aetrix Electronics and suitable for VCXO design, TCXO manufacturing, and wireless transceiver development requiring stable component supply and consistent hyperabrupt CV performance.
Supply support for ZV832BV2TA 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
Zetex Semiconductors plc was a UK-based ISO 9001/TS16949-certified designer and manufacturer of high-performance analog and RF semiconductors, acquired by Diodes Incorporated in 2008.
ZV832BV2TA belongs to the 830-series hyperabrupt varactor family, engineered specifically for low-phase-noise frequency control in precision oscillators and tunable filters-targeting telecom, navigation, and professional wireless equipment.
FAQ
What is the maximum recommended reverse voltage for continuous operation?
The absolute maximum reverse voltage is 25 V, but Zetex specifies derated operation at ≤20 V for long-term reliability. At 20 V, reverse leakage remains ≤20 nA and capacitance change stays within ±0.5%-ensuring stable tuning in production TCXOs over 10+ years.
Can ZV832BV2TA be used in series or parallel configurations?
Yes-parallel connection doubles capacitance while preserving C₂/C₂₀ ratio and Q; series connection halves capacitance and reduces effective tuning range by ~30%. Both configurations retain the hyperabrupt slope, but thermal coupling in parallel arrays requires symmetrical PCB layout to avoid mismatch-induced phase errors.
Is the SOT23 package lead-free and RoHS-compliant?
Yes-ZV832BV2TA conforms to EU RoHS Directive 2011/65/EU. The SOT23 package uses matte tin-plated leads with no lead, cadmium, mercury, hexavalent chromium, PBB, or PBDE. Full material declarations and test reports are available upon request for automotive or medical audits.
How does temperature affect capacitance tuning linearity?
Capacitance exhibits +300 to +400 ppm/°C drift, causing ~0.8% C change from -40°C to +85°C at fixed bias. However, the hyperabrupt profile maintains constant dC/dV slope across temperature-so tuning linearity (Δf/ΔV) degrades less than 2% over that range, unlike abrupt-junction varactors.
ZV832BV2TA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-79, SOD-523
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Capacitance @ Vr, F:
- 23.1pF @ 2V, 1MHz
- Capacitance Ratio:
- 6.5
- Capacitance Ratio Condition:
- C2/C20
- Voltage - Peak Reverse (Max):
- 25 V
- Diode Type:
- Single
- Q @ Vr, F:
- 200 @ 3V, 50MHz
- Operating Temperature:
- -55°C ~ 150°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOD-523
ZV832BV2TA FAQ
1.How can I place an order for ZV832BV2TA through Aetrix?
Please submit a Request for Quotation (RFQ) for ZV832BV2TA 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 ZV832BV2TA reliable?
The price and inventory of ZV832BV2TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZV832BV2TA is usually 5 days.
3.What payment methods are accepted for ZV832BV2TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZV832BV2TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZV832BV2TA?
ZV832BV2TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZV832BV2TA 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 ZV832BV2TA?
For technical support, including ZV832BV2TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZV832BV2TA requirements.
6.How does Aetrix verify that ZV832BV2TA is sourced from the original manufacturer or authorized distributors?
All ZV832BV2TA 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 ZV832BV2TA meets industry standards.
7.What is the process for return or replacement of ZV832BV2TA?
All ZV832BV2TA units undergo pre-shipment inspection (PSI). If there is an issue with ZV832BV2TA, 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 ZV832BV2TA part is unused and in its original packaging.
Return procedure for ZV832BV2TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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