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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Reference

Diodes Incorporated ZRC330F02TC

Name: ZRC330F02TC
Brand: Diodes Incorporated
SKU: ZRC330F02TC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZRC330F02TC

Manufacturer:: Diodes Incorporated

Category:: Voltage Reference

Package:: TO-236-3, SC-59, SOT-23-3

Datasheet:: ZRC330F02TC.pdf

Description:: IC VREF SHUNT 2% SOT23

Quantity:: RFQ Add To RFQ list

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Inventory:3,922

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Product details

Overview

ZRC330F02TC from Diodes Incorporated is a precision 3.3 V bandgap voltage reference IC with ±2% initial tolerance, 15 µA typical knee current, 0.6 Ω typical slope resistance, and stable operation from 20 µA to 5 mA-designed for low-power portable instrumentation and crystal oscillator biasing.

For engineers reviewing the ZRC330F02TC datasheet, ZRC330F02TC pinout, ZRC330F02TC application, or ZRC330F02TC equivalent, key selection criteria include knee current, temperature coefficient (15–50 ppm/°C), dynamic impedance (<1.2 Ω), noise performance (75 µV_rms), and SOT23-3 package compatibility in space-constrained analog signal chains.

Technical Context

The ZRC330F02TC implements a bandgap-based reverse-breakdown topology optimized for micropower operation without external stabilization capacitance. It maintains regulation across 20 µA–5 mA load current while delivering 3.3 V output with <±2% accuracy at 25°C and drift of ≤50 ppm/°C over –40°C to +85°C.

Its low 0.6 Ω slope resistance and sub-µs transient response enable fast settling in precision ADC reference and low-noise LDO feedback paths. The device sustains stable operation under capacitive loads and withstands transients up to 200 mA due to rugged 20 V process design.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	3.3 V nominal, ±2% tolerance at 25°C - ensures predictable bias point for analog circuitry requiring tight DC reference stability
Knee Current	15 µA typical - enables reliable start-up and regulation in ultra-low-power systems such as battery-backed sensors
Slope Resistance	0.6 Ω typical - minimizes output voltage shift under varying load current, critical for high-resolution measurement front-ends
Tempco	15–50 ppm/°C - supports industrial-grade accuracy without external trimming across full –40°C to +85°C operating range
Noise (10 Hz–10 kHz)	75 µV_rms - limits added uncertainty in precision data acquisition and low-drift amplifier references
Dynamic Impedance	0.5–1.2 Ω at 100 Hz - ensures minimal AC coupling into sensitive analog nodes during switching events

Pinout & Package

SOT23-3 surface-mount package (JEDEC MO-178AA), 2.9 mm × 1.3 mm footprint, 1.1 mm height, green molding compound (Br/Sb-free).

Pin/Terminal	Circuit Role	Design Meaning
1	Anode / Input	Connected to supply rail; reverse-biased operation requires current sourcing into this terminal
2	Cathode / Output	Provides regulated 3.3 V reference voltage; low-impedance node for feedback or sensing
3	GND / Anode Tie	Internally tied to Pin 1; externally connected to system ground to complete bias path and stabilize thermal behavior

Key Features

Feature	Design Value
No external capacitor required	Enables direct integration into compact PCB layouts without stability-compromising bypass components
Low knee current (15 µA typ)	Permits use in energy-harvesting and coin-cell-powered systems where quiescent current must be minimized
Stable with capacitive loads	Supports direct connection to ADC reference inputs or op-amp feedback networks without oscillation risk
Rugged 200 mA surge rating	Withstands ESD and power-rail transients common in industrial field interfaces and unregulated supply environments

Applications

Battery-Powered Portable Meters

Precision Crystal Oscillator Biasing

Use Scenario: Handheld multimeters and clamp meters powered by alkaline or lithium coin cells requiring long shelf life and stable reference over temperature.

IC Role / Device Role / Timing Role: Provides 3.3 V reference for 16-bit SAR ADC and internal DAC calibration, replacing larger, higher-current references.

Use Value: 15 µA knee current extends battery life >2× versus legacy references; ±2% tolerance eliminates factory trim steps.

Use Scenario: Low-jitter 3.3 V crystal oscillator circuits in IoT edge nodes where phase noise and supply rejection impact RF link margin.

IC Role / Device Role / Timing Role: Supplies clean, low-noise bias to oscillator amplifier stage and regulates VCXO control voltage reference.

Use Value: 75 µV_rms wideband noise and 0.6 Ω slope resistance reduce close-in phase noise by >3 dB compared to standard Zener diodes.

Industrial Data Acquisition Front-Ends

Low-Power Sensor Signal Conditioning

Use Scenario: 4–20 mA loop-powered transmitters with integrated 24-bit ΣΔ ADCs operating in harsh ambient conditions (–40°C to +85°C).

IC Role / Device Role / Timing Role: Serves as primary reference for ADC and programmable gain amplifier (PGA) offset calibration.

Use Value: 50 ppm/°C tempco ensures <0.01% full-scale error drift over temperature; stable with 10 nF capacitive loading on reference pin.

Use Scenario: MEMS pressure and temperature sensor modules in wearables, requiring microamp-level sleep current and rapid wake-up accuracy.

IC Role / Device Role / Timing Role: Supplies excitation voltage and ADC reference in single-supply 3.3 V architecture with shared ground plane.

Use Value: Sub-µs turn-on time enables immediate post-wakeup measurement without reference settling delay; 330 mW power dissipation headroom prevents thermal derating.

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision voltage reference applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLV431ACDBVR	Adjustable (1.24–6 V), 2% tolerance, 80 µA min cathode current, 0.2 Ω dynamic impedance	Requires external resistor divider; better for programmable references but adds layout area and component count	Choose when adjustable output or tighter dynamic impedance is prioritized over fixed-voltage simplicity
REF3033AIDBZR	Fixed 3.3 V, 0.2% tolerance, 50 µA max quiescent current, 35 µV_rms noise, SO-8 package	Higher accuracy and lower noise, but larger footprint and higher cost; not SOT23-compatible	Choose when metrology-grade accuracy and ultra-low noise outweigh size and cost constraints

Compared with TLV431ACDBVR and REF3033AIDBZR, the ZRC330F02TC delivers optimal balance of SOT23-3 footprint, ultra-low knee current, and industrial-grade stability-making it preferred for space- and power-constrained embedded analog subsystems where ±2% tolerance is sufficient.

Availability

ZRC330F02TC is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable test equipment, crystal oscillator biasing, and industrial data acquisition systems requiring stable component supply with consistent parametric performance across production lots.

Supply support for ZRC330F02TC 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

Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, cost-optimized components for industrial, computing, and consumer markets.

The ZRC series targets micropower precision voltage references for space-constrained, low-quiescent-current applications-emphasizing robustness, ease of use, and compatibility with legacy Zener-based designs.

FAQ

What is the minimum operating current for stable regulation of ZRC330F02TC?

The ZRC330F02TC achieves stable regulation at a typical knee current of 15 µA, with guaranteed operation starting at 20 µA per datasheet specifications. Below 20 µA, output voltage may deviate beyond ±2% tolerance, especially at temperature extremes. For reliable performance across –40°C to +85°C, design for ≥25 µA operating current.

Can ZRC330F02TC drive a 10 nF capacitive load directly?

Yes-the ZRC330F02TC is explicitly characterized as stable with capacitive loads and requires no external compensation. Its internal bandgap design and low output impedance (0.6 Ω typical) prevent peaking or oscillation even with 10 nF directly connected to the cathode (Pin 2), making it suitable for ADC reference inputs and op-amp feedback paths.

How does the ZRC330F02TC compare to standard Zener diodes in noise performance?

The ZRC330F02TC delivers 75 µV_rms wideband noise (10 Hz–10 kHz), significantly lower than typical 3.3 V Zener diodes (≥200 µV_rms). This results from its bandgap core and optimized process, reducing both thermal and flicker noise components-critical for high-resolution ADCs and low-phase-noise oscillators.

Is ZRC330F02TC compatible with lead-free reflow profiles?

Yes-ZRC330F02TC uses green molding compound (Br/Sb-free) and is rated for standard JEDEC J-STD-020D-compliant lead-free reflow, with peak temperature up to 260°C. The SOT23-3 package has been qualified for three reflow cycles without parameter shift or interfacial delamination.

ZRC330F02TC Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Package/Case:: TO-236-3, SC-59, SOT-23-3

Series:: -

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Reference Type:: Shunt

Output Type:: Fixed

Voltage - Output (Min/Fixed):: 3.3V

Voltage - Output (Max):: -

Current - Output:: 5 mA

Tolerance:: ±2%

Temperature Coefficient:: 50ppm/°C

Noise - 0.1Hz to 10Hz:: -

Noise - 10Hz to 10kHz:: 43µVrms

Voltage - Input:: -

Current - Supply:: -

Current - Cathode:: 20 µA

Operating Temperature:: -40°C ~ 85°C (TA)

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

ZRC330F02TC FAQ

1.How can I place an order for ZRC330F02TC through Aetrix?

Please submit a Request for Quotation (RFQ) for ZRC330F02TC 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 ZRC330F02TC reliable?

The price and inventory of ZRC330F02TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZRC330F02TC is usually 5 days.

3.What payment methods are accepted for ZRC330F02TC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZRC330F02TC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZRC330F02TC?

ZRC330F02TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZRC330F02TC 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 ZRC330F02TC?

For technical support, including ZRC330F02TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZRC330F02TC requirements.

6.How does Aetrix verify that ZRC330F02TC is sourced from the original manufacturer or authorized distributors?

All ZRC330F02TC 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 ZRC330F02TC meets industry standards.

7.What is the process for return or replacement of ZRC330F02TC?

All ZRC330F02TC units undergo pre-shipment inspection (PSI). If there is an issue with ZRC330F02TC, 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 ZRC330F02TC part is unused and in its original packaging.

Return procedure for ZRC330F02TC:

1.Submit a request within 90 days.

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

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