My Inquiry
My Account
Diodes Incorporated ZMV832ATC
- Part No.:
- ZMV832ATC
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-76, SOD-323
- Datasheet:
-
ZMV832ATC.pdf
- Description:
- DIODE VARACTOR 25V SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:3,616
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
ZMV832ATC from Zetex Semiconductors is a silicon hyperabrupt varactor diode optimized for voltage-controlled frequency tuning in precision oscillators and RF filters. It delivers 22.0 pF nominal capacitance at VR = 2 V, 5.0–6.5 capacitance ratio (C₂/C₂₀), Q ≥ 200 at 50 MHz, and ultra-low reverse leakage (200 pA typ.), enabling low-phase-noise VCXO/TCXO designs in wireless infrastructure and mobile radio front-ends.
For engineers reviewing the ZMV832ATC datasheet, ZMV832ATC pinout, ZMV832ATC application, or ZMV832ATC equivalent, key selection criteria include its 25 V reverse breakdown rating, SOT23 package compatibility, hyperabrupt CV slope for steep tuning response, and guaranteed Q factor performance across temperature.
Technical Context
ZMV832ATC operates as a voltage-variable capacitor with hyperabrupt doping profile, engineered to produce a steeper C–V slope than abrupt or linear junction varactors. Its capacitance varies from ~24.2 pF at 2 V to ~3.7 pF at 20 V, supporting wide-range frequency pulling in oscillator loops.
The device exhibits tight CV tolerance (±5% for 832A grade), low temperature coefficient (300–400 ppm/°C), and stable Q ≥ 200 up to 50 MHz - critical for minimizing phase noise in reference clock generation and RF bandpass filter tuning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Capacitance @ 2 V | 19.8–24.2 pF (nominal 22.0 pF); sets baseline resonant frequency in LC tank circuits |
| Capacitance Ratio C₂/C₂₀ | 5.0–6.5; enables ≥6:1 frequency tuning range in VCOs without harmonic distortion |
| Q Factor @ 50 MHz | ≥200; ensures low insertion loss and high selectivity in tunable filter matching networks |
| Reverse Leakage @ 20 V | 0.2–20 nA; contributes <0.1° RMS phase jitter in 10–100 MHz VCXOs |
| Breakdown Voltage | 25 V min; supports bias headroom for ±12 V control rails in industrial timing modules |
| Tempco of C | 300–400 ppm/°C; requires compensation in TCXO designs above ±1 ppm stability target |
Pinout & Package
Supplied in SOT23 package (JEDEC TO-236AB), 3-terminal surface-mount configuration with anode, cathode, and case (cathode-connected substrate). Cathode marked by single bar on top surface.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Anode (Pin 1) | Control voltage input node | Bias terminal for reverse voltage application; connects to tuning voltage source via series resistor |
| Cathode (Pin 2) | AC ground / RF return path | Low-inductance connection point to circuit ground plane; critical for Q preservation at RF |
| Case / Pin 3 | Thermal and electrical ground | Internally tied to cathode; must be soldered to PCB ground pad for thermal dissipation and RF shielding |
Key Features
| Feature | Design Value |
|---|---|
| Hyperabrupt junction profile | Delivers steeper C–V slope vs. standard varactors, enabling finer frequency resolution per volt in narrowband VCOs |
| Tight CV tolerance (832A grade) | ±5% capacitance spread reduces unit-to-unit calibration effort in production TCXO modules |
| Low IR (200 pA typ.) | Minimizes DC loading on PLL charge pump outputs and preserves loop stability in integrated synthesizers |
| High Q ≥ 200 @ 50 MHz | Reduces phase noise floor by >6 dB compared to Q < 100 varactors in 2.4 GHz LO generation paths |
Applications
| VCXO Reference Oscillator | RF Bandpass Filter Tuning |
|---|---|
Use Scenario: Stabilized 10–100 MHz clock source for FPGA transceivers requiring ±0.5 ppm frequency accuracy over –40°C to +85°C. IC Role / Device Role / Timing Role: Voltage-controlled capacitor in Clapp oscillator topology, adjusting resonant frequency of AT-cut quartz crystal. Use Value: 5.5× C₂/C₂₀ ratio enables ±500 ppm pull range while maintaining Q > 180, meeting Telcordia GR-1244 jitter specs. | Use Scenario: Reconfigurable 2.4 GHz ISM-band filter in Wi-Fi 6 front-end module with dynamic channel selection. IC Role / Device Role / Timing Role: Tuning element in parallel-LC trap network, shifting rejection notch frequency under MCU DAC control. Use Value: 22 pF nominal value and hyperabrupt slope allow 12 MHz bandwidth shift per 1 V control step with <0.3 dB insertion loss variation. |
| Mobile Radio Transceiver LO | Pager Frequency Synthesizer |
Use Scenario: Local oscillator in TDD-LTE handset PA driver stage requiring fast frequency hopping (<10 μs settling) across 700–2600 MHz bands. IC Role / Device Role / Timing Role: Primary varactor in wideband VCO core, biased via high-speed DAC to enable fractional-N synthesis. Use Value: Low 200 pA leakage prevents DAC output droop during hop transitions, ensuring repeatable frequency lock within 3 cycles. | Use Scenario: Compact 450 MHz FSK pager receiver with battery life >1 year; demands ultra-low standby current and minimal board area. IC Role / Device Role / Timing Role: Tuning diode in Colpitts VCO driving ceramic resonator; reverse-biased at 3 V from coin-cell supply. Use Value: SOT23 footprint and 250 mW power rating allow direct integration into 12 mm² PCB layout without thermal derating. |
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 = 12.5 pF, higher Q = 300 @ 50 MHz, 30 V breakdown | Better suited for 1–3 GHz VCOs where lower capacitance and higher Q reduce phase noise | Select when targeting >2 GHz operation and tighter phase noise budgets; requires retuning of tank inductance |
| BBY52-02W | Linear-abrupt junction, C₂ = 27 pF, C₂/C₂₀ = 3.2, Q = 150 @ 50 MHz | Offers wider absolute capacitance range but shallower tuning slope and lower Q | Prefer for cost-sensitive pager designs where tuning linearity > slope steepness; verify phase noise meets spec |
Compared with SMV2023-011LF and BBY52-02W, ZMV832ATC provides optimal balance of mid-band capacitance (22 pF), hyperabrupt slope (C₂/C₂₀ = 5.5), and proven reliability in SOT23-restricted space-constrained TCXO modules.
Availability
ZMV832ATC is available at Aetrix Electronics and suitable for VCXO reference oscillators, RF bandpass filter tuning, and mobile radio transceiver LO generation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for ZMV832ATC 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 and TS16949-certified manufacturer specializing in high-performance analog and RF semiconductors before its acquisition by Diodes Incorporated in 2008.
ZMV832ATC belongs to the 830-series hyperabrupt varactor family, designed specifically for low-phase-noise frequency control in telecom-grade oscillators and tunable RF filters where CV slope and Q consistency are critical.
FAQ
What is the maximum recommended reverse voltage for continuous operation?
ZMV832ATC has a minimum reverse breakdown voltage of 25 V and is rated for continuous reverse bias up to 20 V per datasheet specifications. Operating beyond 20 V risks irreversible avalanche conduction and parametric drift, especially at elevated temperatures above 85°C.
Does ZMV832ATC require external biasing components for VCXO use?
Yes - a series current-limiting resistor (typically 100 kΩ–1 MΩ) is required between the tuning voltage source and the anode to prevent leakage-induced DC offset errors. A 100 nF ceramic bypass capacitor must also be placed between cathode and ground to suppress RF feedback into the control line.
Is the SOT23 package lead-free and RoHS compliant?
Yes - Zetex confirmed full RoHS compliance for the ZMV832ATC SOT23 variant per Issue 11 (January 2007) datasheet, with lead-free matte tin plating and no exemptions applied. The device meets EU Directive 2011/65/EU and supports WEEE/ELV compliance in end equipment.
How does temperature affect capacitance stability in ZMV832ATC?
ZMV832ATC exhibits a temperature coefficient of capacitance of 300–400 ppm/°C. Over –40°C to +85°C, this results in ±5% total capacitance drift relative to 25°C value - a key factor requiring compensation in TCXO designs targeting <±1 ppm frequency stability.
ZMV832ATC Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- -
- Package/Case:
- SC-76, SOD-323
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Capacitance @ Vr, F:
- 24.2pF @ 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-323
ZMV832ATC FAQ
1.How can I place an order for ZMV832ATC through Aetrix?
Please submit a Request for Quotation (RFQ) for ZMV832ATC 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 ZMV832ATC reliable?
The price and inventory of ZMV832ATC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZMV832ATC is usually 5 days.
3.What payment methods are accepted for ZMV832ATC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZMV832ATC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZMV832ATC?
ZMV832ATC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZMV832ATC 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 ZMV832ATC?
For technical support, including ZMV832ATC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZMV832ATC requirements.
6.How does Aetrix verify that ZMV832ATC is sourced from the original manufacturer or authorized distributors?
All ZMV832ATC 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 ZMV832ATC meets industry standards.
7.What is the process for return or replacement of ZMV832ATC?
All ZMV832ATC units undergo pre-shipment inspection (PSI). If there is an issue with ZMV832ATC, 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 ZMV832ATC part is unused and in its original packaging.
Return procedure for ZMV832ATC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ZMV832ATC Tags
-
BBY5702VH6327XTSA1
Infineon Technologies
-
BBY5602VH6327XTSA1
Infineon Technologies
-
SMV1405-040LF
Skyworks Solutions Inc.
-
BBY6502VH6327XTSA1
Infineon Technologies
-
BBY6602VH6327XTSA1
Infineon Technologies
-
BBY5802VH6327XTSA1
Infineon Technologies
.jpg)
-
BB175X
NXP USA Inc.
-
SMV1430-040LF
Skyworks Solutions Inc.
-
SMV1273-079LF
Skyworks Solutions Inc.
-
SMV1255-079LF
Skyworks Solutions Inc.
-
SMV1213-079LF
Skyworks Solutions Inc.
-
SMV1247-079LF
Skyworks Solutions Inc.
Tech Hub
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
LDO regulator guide covering low dropout voltage, power dissipation, thermal design, PSRR, output noise, capacitor stability, adjustable LDO circuits, LDO vs buck converter and datasheet selection chec…
Conditional Access Module guide covering CAM meaning, CI/CI+ interface, smart card authorization, DVB security workflow, TV and set-top box compatibility, internal electronics, ESD protection, connecto…
Guide to electronic component obsolescence covering EOL risk, PCN/PDN notices, last-time buy planning, replacement options, form-fit-function validation, counterfeit risk and BOM lifecycle management.
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.…
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…
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…
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…
