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

Diodes Incorporated ZRC330F02TA

Name: ZRC330F02TA
Brand: Diodes Incorporated
SKU: ZRC330F02TA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZRC330F02TA

Manufacturer:: Diodes Incorporated

Category:: Voltage Reference

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

Datasheet:: ZRC330F02TA.pdf

Description:: IC VREF SHUNT 2% SOT23-3

Quantity:: RFQ Add To RFQ list

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Inventory:44,004

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Product details

Overview

ZRC330F02TA 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 battery-powered data acquisition systems.

For engineers reviewing the ZRC330F02TA datasheet, ZRC330F02TA pinout, ZRC330F02TA application, or ZRC330F02TA equivalent, key selection criteria include low-knee-current operation, capacitor-free stability, microsecond-scale transient response, and SOT23-3 package compatibility in space-constrained analog signal chains.

Technical Context

The ZRC330F02TA implements a trimmed bandgap core with internal curvature compensation, delivering stable 3.3 V output across –40°C to +85°C without external stabilization components. Its low 0.6 Ω slope resistance and 75 µV_rms (10 Hz–10 kHz) noise support high-accuracy ADC biasing and precision oscillator regulation.

It operates reliably under capacitive loads and withstands transient currents up to 200 mA due to rugged 20 V process design, while maintaining <50 ppm/°C temperature coefficient over full industrial temperature range at 150 µA–5 mA bias.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	3.3 V ±2% at 150 µA - enables direct interface with 3.3 V ADC references and LDO feedback networks
Knee Current	15 µA typical - allows stable regulation down to ultra-low-power sleep modes
Slope Resistance	0.6 Ω typical - minimizes load-induced voltage shift in varying current conditions
Tempco	15–50 ppm/°C - ensures ≤±10 mV drift over –40°C to +85°C in metering applications
Wideband Noise	75 µV_rms (10 Hz–10 kHz) - supports sub-12-bit measurement accuracy without post-filtering
Transient Response	Stabilizes in <5 µs - maintains reference integrity during fast wake-up or sampling bursts

Pinout & Package

Supplied in SOT23-3 package (JEDEC MO-178AA), 2.9 mm × 1.3 mm footprint, 1.1 mm height, with gull-wing leads and green molding compound (Br/Sb-free).

Pin/Terminal	Circuit Role	Design Meaning
1	NC or GND tie	Internally unconnected; may be tied to Pin 2 for improved thermal symmetry in PCB layout
2	GND	Reference ground return path; must connect to clean analog ground plane for noise control
3	VR (Anode)	3.3 V output terminal; reverse-biased zener configuration - connects to load or feedback node

Key Features

Feature	Design Value
No external capacitor required	Enables single-component reference solution in area-limited PCBs, eliminating BOM and layout overhead
Low 15 µA knee current	Permits operation in energy-harvesting and coin-cell-powered systems where quiescent current is critical
Stable with capacitive loads	Supports direct connection to ADC input caps or crystal oscillator load caps without oscillation risk
200 mA surge current rating	Withstands ESD transients and inrush events without degradation, improving field reliability

Applications

Battery-Powered Portable Meters

Precision Data Acquisition Front-Ends

Use Scenario: Handheld multimeters and clamp meters operating on AA/AAA cells with intermittent sampling.

IC Role / Device Role / Timing Role: Primary voltage reference for 16-bit sigma-delta ADC and display driver biasing.

Use Value: 15 µA knee current extends battery life >2× vs. legacy references; ±2% tolerance eliminates factory calibration per unit.

Use Scenario: Industrial sensor nodes digitizing thermocouple or strain gauge outputs.

IC Role / Device Role / Timing Role: Stable excitation and reference source for ratiometric measurement architecture.

Use Value: 0.6 Ω slope resistance limits gain error to <0.02% across 100 µA–3 mA sensor drive current range.

Crystal Oscillator Bias Networks

Low-Power Precision Power Supplies

Use Scenario: TCXO modules requiring stable 3.3 V bias for varactor tuning and amplifier stages.

IC Role / Device Role / Timing Role: Low-noise voltage reference for oscillator core biasing and temperature compensation DAC reference.

Use Value: 75 µV_rms noise contributes <0.1 ppb phase jitter floor, preserving short-term stability.

Use Scenario: Medical wearable devices using buck-boost regulators with tight output tolerance.

IC Role / Device Role / Timing Role: Feedback reference for adjustable LDO or switching regulator error amplifier.

Use Value: Capacitor-free stability simplifies layout in dense wearable PCBs; 5 µs settling avoids regulation delay during mode transitions.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLV431AIDBVR	Adjustable (1.24–6 V), 2% tolerance, 80 µA min cathode current, higher 1.5 Ω dynamic impedance	Requires external resistor divider; less suitable for fixed 3.3 V systems with strict size constraints	Choose when programmability or tighter tempco (50 ppm/°C max) outweighs SOT23-3 footprint advantage
MAX6033AESA+	Fixed 3.3 V, 0.5% tolerance, 10 µA max quiescent current, but requires 1 µF bypass capacitor	Superior accuracy and lower IQ, but adds capacitor BOM item and layout area	Prefer when system-level accuracy budget demands <±10 mV and board space permits decoupling cap

Compared with TLV431AIDBVR and MAX6033AESA+, the ZRC330F02TA uniquely combines fixed 3.3 V output, capacitor-free operation, and SOT23-3 footprint-making it optimal for cost-sensitive, space-constrained, and ultra-low-power applications where ±2% tolerance is acceptable.

Availability

ZRC330F02TA is available at Aetrix Electronics and suitable for battery-powered portable meters, precision data acquisition front-ends, and crystal oscillator bias networks requiring stable component supply with consistent parametric performance across production lots.

Supply support for ZRC330F02TA 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 ZRC330 series belongs to Diodes' precision analog reference product line, engineered specifically for low-power, space-constrained applications where simplicity, robustness, and predictable parametric behavior are prioritized over ultra-high accuracy.

FAQ

What is the minimum operating current for stable regulation of ZRC330F02TA?

The ZRC330F02TA achieves stable regulation at 15 µA typical knee current, with guaranteed operation starting at 20 µA across the full –40°C to +85°C temperature range. Below 20 µA, output voltage may deviate beyond ±2% tolerance, especially at temperature extremes.

Can ZRC330F02TA drive a 1000 pF capacitive load without oscillation?

Yes-the ZRC330F02TA is explicitly characterized as stable with capacitive loads and requires no external compensation. Diodes' datasheet confirms stability up to at least 1000 pF, making it suitable for direct connection to ADC input capacitors and crystal oscillator load networks.

Is Pin 1 of the SOT23 package electrically connected internally?

No-Pin 1 is internally unconnected (NC) in the ZRC330F02TA. The datasheet states it may be left floating or tied to Pin 2 (GND) to improve thermal symmetry and reduce thermal EMF errors in precision layouts, but it carries no functional signal.

How does ZRC330F02TA perform under transient current surges?

The ZRC330F02TA withstands transient currents up to 200 mA due to its rugged 20 V process design. Transient response testing shows full recovery within 5 µs after a single 100 mA pulse, with no parameter shift or latch-up observed-critical for ESD-prone or switching regulator-coupled systems.

ZRC330F02TA 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:: Active

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

ZRC330F02TA FAQ

1.How can I place an order for ZRC330F02TA through Aetrix?

Please submit a Request for Quotation (RFQ) for ZRC330F02TA 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 ZRC330F02TA reliable?

The price and inventory of ZRC330F02TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZRC330F02TA is usually 5 days.

3.What payment methods are accepted for ZRC330F02TA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZRC330F02TA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZRC330F02TA?

ZRC330F02TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZRC330F02TA 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 ZRC330F02TA?

For technical support, including ZRC330F02TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZRC330F02TA requirements.

6.How does Aetrix verify that ZRC330F02TA is sourced from the original manufacturer or authorized distributors?

All ZRC330F02TA 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 ZRC330F02TA meets industry standards.

7.What is the process for return or replacement of ZRC330F02TA?

All ZRC330F02TA units undergo pre-shipment inspection (PSI). If there is an issue with ZRC330F02TA, 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 ZRC330F02TA part is unused and in its original packaging.

Return procedure for ZRC330F02TA:

1.Submit a request within 90 days.

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

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