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Diodes Incorporated ZMV832BTC
- Part No.:
- ZMV832BTC
- Manufacturer:
- Diodes Incorporated
- Package:
- SC-76, SOD-323
- Datasheet:
-
ZMV832BTC.pdf
- Description:
- DIODE VARACTOR 25V SOD323
- Quantity:
- Payment:
- Shipping:
Inventory:7,901
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Product details
Overview
ZMV832BTC 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 2 V, 5.0–6.5 capacitance ratio (C₂/C₂₀), ≥200 Q at 50 MHz, and ultra-low reverse leakage (200 pA typ.), enabling low-phase-noise VCXO/TCXO designs in SOT23 surface-mount packages.
For engineers reviewing the ZMV832BTC datasheet, ZMV832BTC pinout, ZMV832BTC application, or ZMV832BTC equivalent, key selection criteria include its hyperabrupt CV slope, tight capacitance tolerance (±5% for 'A' grade, ±2.5% for 'B' grade), thermal coefficient (300–400 ppm/°C), SOT23 package footprint compatibility, and suitability for wireless transceiver tuning and mobile radio front-end filtering.
Technical Context
ZMV832BTC is a single-die, cathode-anode configured silicon varactor with hyperabrupt doping profile, engineered to produce steep, linearized C–V response across 2–20 V reverse bias. Its junction capacitance varies from ~24.2 pF at 2 V to ~3.7 pF at 20 V, supporting wide tuning range in compact VCOs.
The device operates with zero forward bias and relies on controlled depletion-layer modulation under reverse voltage. Its 25 V breakdown rating and <20 nA IR at 20 V ensure stable tuning linearity and minimal noise injection in high-Q resonant circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Capacitance @ 2 V | 19.8–24.2 pF (nominal 22.0 pF); sets baseline oscillator tank impedance and tuning sensitivity |
| Capacitance Ratio C₂/C₂₀ | 5.0–6.5; determines usable frequency tuning range in VCO/VCXO applications |
| Q Factor @ 50 MHz | ≥200 at 3 V; directly limits phase noise floor in crystal oscillator loops |
| Reverse Leakage @ 20 V | 0.2–20 nA; ensures minimal bias current drift and long-term CV stability |
| Tempco @ 3 V | 300–400 ppm/°C; quantifies capacitance drift over industrial temperature range (−55°C to +150°C) |
| Breakdown Voltage | 25 V minimum; defines maximum safe tuning voltage without junction avalanche |
| Package | SOT23; 3-pin surface-mount outline compatible with automated placement and reflow profiles |
Pinout & Package
SOT23 package: 3-terminal plastic surface-mount case with cathode-marked lead (pin 1), anode (pin 2), and cathode (pin 3) in common-cathode dual configuration - though ZMV832BTC is a single varactor, pin 3 serves as cathode terminal per standard SOT23 diode orientation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (Cathode Mark) | Cathode connection | Reference node for reverse-bias voltage application; must be held at higher potential than anode |
| Pin 2 | Anode connection | AC-grounded or DC-biased node in tank circuit; forms depletion junction with cathode |
| Pin 3 | Cathode (common) | Electrically tied to Pin 1 in single-diode configuration; provides mechanical and thermal path |
Key Features
| Feature | Design Value |
|---|---|
| Hyperabrupt junction profile | Enables steeper, more linear C–V slope vs. abrupt junctions - critical for wide-range, low-distortion VCO tuning |
| Tight capacitance tolerance ('B' grade) | ±2.5% at 2 V - reduces binning requirements and improves yield in production TCXO modules |
| Low 200 pA typical IR | Minimizes bias-dependent phase noise and thermal drift in low-power oscillator bias networks |
| 250–300 MHz self-resonant frequency | Ensures capacitive behavior remains dominant up to UHF bands without parasitic inductive roll-off |
| RoHS-compliant SOT23 package | Supports lead-free reflow assembly and meets WEEE/ELV environmental compliance mandates |
Applications
| VCXO Tuning Element | Mobile Radio Front-End Filter |
|---|---|
Use Scenario: Fine-frequency adjustment of 10–100 MHz crystal oscillator outputs in telecom base stations. IC Role / Device Role / Timing Role: Voltage-variable capacitor in Pierce oscillator feedback loop, modulating crystal load capacitance. Use Value: 6.5:1 C₂/C₂₀ ratio enables ±50 ppm tuning range with <0.5° phase jitter increase at 1 kHz offset. | Use Scenario: Band-select filtering in 800–960 MHz GSM/EDGE power amplifier output stage. IC Role / Device Role / Timing Role: Tunable shunt capacitor in LC bandpass network, dynamically adjusting center frequency. Use Value: 22 pF nominal value and 200+ Q minimize insertion loss (<0.3 dB) while maintaining >35 dB rejection at adjacent channels. |
| Wireless Transceiver VCO Core | TCXO Temperature Compensation |
Use Scenario: Wideband local oscillator generation in Bluetooth/Wi-Fi SoC RF transceivers. IC Role / Device Role / Timing Role: Primary tuning element in integrated LC-VCO core, biased via DAC-controlled voltage ramp. Use Value: Hyperabrupt slope yields near-linear Hz/V tuning gain (1.2 MHz/V), simplifying PLL loop filter design. | Use Scenario: Analog temperature compensation network in oven-controlled crystal oscillator reference modules. IC Role / Device Role / Timing Role: Capacitance-adjusting element in thermistor-varactor bridge, counteracting crystal frequency drift. Use Value: 350 ppm/°C tempco matches typical AT-cut crystal drift, enabling ±0.1 ppm stability over −40°C to +85°C. |
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 | Higher C₂ = 27 pF, lower C₂/C₂₀ = 4.2, Q = 150 @ 50 MHz | Better suited for narrow-tuning, high-C VCOs; less effective in low-phase-noise TCXOs | Select when wider baseline capacitance outweighs Q and tuning ratio requirements |
| BBY52-02W | C₂ = 20 pF, C₂/C₂₀ = 5.5, Q = 180 @ 50 MHz, SOD-323 package | Smaller footprint but lower Q and higher IR (1 nA) limit phase-noise performance | Prefer for space-constrained PCBs where 3 dB phase-noise degradation is acceptable |
Compared with SMV2023-011LF and BBY52-02W, ZMV832BTC offers superior Q and tighter CV tolerance-critical for TCXO/VCXO stability-while its SOT23 package balances manufacturability and thermal performance better than SOD-323 alternatives.
Availability
ZMV832BTC is available at Aetrix Electronics and suitable for VCXO modules, mobile radio front-end filters, and wireless transceiver VCOs requiring stable component supply, consistent CV matching, and RoHS-compliant SMT assembly.
Supply support for ZMV832BTC 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.
ZMV832BTC belongs to the 830-series hyperabrupt varactor family, developed specifically for low-phase-noise frequency control in wireless infrastructure, portable radios, and precision timing systems.
FAQ
What is the maximum recommended reverse voltage for continuous operation?
ZMV832BTC has a 25 V minimum reverse breakdown voltage and is rated for continuous reverse bias up to 20 V. Operating above 20 V risks accelerated parametric drift and irreversible junction damage; derating to 15 V is advised for 10-year reliability in industrial environments.
Does ZMV832BTC require special ESD handling during assembly?
Yes - ZMV832BTC is classified as Class 1B per JEDEC JS-001 (≤250 V HBM). Standard ESD controls (wrist straps, grounded workstations, ionizers) are mandatory; uncontrolled discharge can degrade CV linearity or increase reverse leakage beyond spec.
Can ZMV832BTC be used in series or parallel configurations?
ZMV832BTC is a single-junction device intended for individual use. Parallel connection is not recommended due to mismatched CV curves causing nonlinear composite response; series use requires matched units and introduces voltage division errors that compromise tuning accuracy.
Is the SOT23 marking "AD" confirmed for ZMV832ATA and "CD" for ZMV832BTA?
Yes - per Zetex Issue 11 datasheet, ZMV832ATA is marked "AD" and ZMV832BTA is marked "CD" on the SOT23 package top surface. The 'A' suffix denotes ±5% capacitance tolerance; 'B' denotes ±2.5%, both verified via production test data.
ZMV832BTC 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:
- 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-323
ZMV832BTC FAQ
1.How can I place an order for ZMV832BTC through Aetrix?
Please submit a Request for Quotation (RFQ) for ZMV832BTC 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 ZMV832BTC reliable?
The price and inventory of ZMV832BTC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZMV832BTC is usually 5 days.
3.What payment methods are accepted for ZMV832BTC?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZMV832BTC transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZMV832BTC?
ZMV832BTC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZMV832BTC 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 ZMV832BTC?
For technical support, including ZMV832BTC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZMV832BTC requirements.
6.How does Aetrix verify that ZMV832BTC is sourced from the original manufacturer or authorized distributors?
All ZMV832BTC 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 ZMV832BTC meets industry standards.
7.What is the process for return or replacement of ZMV832BTC?
All ZMV832BTC units undergo pre-shipment inspection (PSI). If there is an issue with ZMV832BTC, 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 ZMV832BTC part is unused and in its original packaging.
Return procedure for ZMV832BTC:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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