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

Diodes Incorporated ZRC330F01TA

Name: ZRC330F01TA
Brand: Diodes Incorporated
SKU: ZRC330F01TA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZRC330F01TA

Manufacturer:: Diodes Incorporated

Category:: Voltage Reference

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

Datasheet:: ZRC330F01TA.pdf

Description:: IC VREF SHUNT 1% SOT23

Quantity:: RFQ Add To RFQ list

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Inventory:4,795

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Product details

Overview

ZRC330F01TA from Diodes Incorporated is a precision 3.3 V bandgap voltage reference IC in SOT23-3 package, featuring ±1% initial tolerance, 15 µA typical knee current, 0.6 Ω typical slope resistance, and stable operation without external capacitor-used in battery-powered instrumentation and precision power supplies.

For engineers reviewing the ZRC330F01TA datasheet, ZRC330F01TA pinout, ZRC330F01TA application, or ZRC330F01TA equivalent, key selection criteria include low-knee-current operation (15 µA typ), industrial temperature range (–40°C to +85°C), 75 µV_rms wideband noise, and SOT23-3 footprint compatibility with space-constrained portable systems.

Technical Context

The ZRC330F01TA implements a bandgap-based reverse-breakdown architecture delivering a fixed 3.3 V reference with minimal dependence on load current or supply variations. Its low dynamic impedance (0.5–1.2 Ω at 1 mA) and fast transient response (<5 µs stabilization) support high-accuracy ADC biasing and crystal oscillator voltage regulation.

Designed for micropower operation, it maintains specified accuracy across 20 µA–5 mA load current while tolerating transient surges up to 200 mA. Temperature coefficient is 15–50 ppm/°C over –40°C to +85°C, enabling use in unregulated environments without external compensation.

Key Specifications

Parameter	Value and Actual Design Meaning
Reference Voltage	3.3 V ±1% (tight initial accuracy enables direct replacement of higher-cost references in 12-bit ADC references)
Knee Current	15 µA typical (enables stable regulation down to ultra-low-power sleep modes)
Slope Resistance	0.6 Ω typical (minimizes output voltage shift under load transients)
Temp Coefficient	15–50 ppm/°C (supports industrial-grade measurement accuracy without calibration)
Wideband Noise	75 µV_rms, 10 Hz–10 kHz (low enough for 16-bit SAR ADC reference without filtering)
Operating Current	20 µA to 5 mA (covers standby to active measurement phases in portable meters)
Capacitive Load Stability	Stable with no external capacitor (reduces BOM count and PCB area in compact designs)

Pinout & Package

SOT23-3 package (JEDEC MO-178AA), 2.9 mm × 1.3 mm footprint, 1.1 mm height, gull-wing leads; RoHS-compliant green molding compound.

Pin/Terminal	Circuit Role	Design Meaning
1	Anode / Input	Reverse-biased terminal; connects to unregulated supply rail or current source
2	Cathode / Output	Provides regulated 3.3 V reference; low-impedance output node for load connection
3	GND / Case	Ground reference terminal; electrically tied to cathode internally; must be low-impedance path

Key Features

Feature	Design Value
No external capacitor required	Eliminates 1–2 passive components and associated layout sensitivity in space-constrained metering PCBs
Low knee current (15 µA)	Enables accurate reference operation during microcontroller deep-sleep states with <20 µA system current
Fast turn-on time (<5 µs)	Supports burst-mode sampling in data acquisition systems without reference settling delay penalties
Robust surge rating (200 mA)	Withstands ESD events and inrush transients without degradation in battery-backed instrumentation
Green molding compound	Meets IEC 61249-2-21 halogen-free requirements for environmental compliance in EU/Asia markets

Applications

Battery-Powered Multimeters

Precision Data Loggers

Use Scenario: Handheld digital multimeter operating from two AA cells with auto-ranging and 4½-digit resolution.

IC Role / Device Role / Timing Role: Primary voltage reference for 24-bit sigma-delta ADC and internal DAC calibration.

Use Value: ±1% tolerance and 50 ppm/°C TC ensure full-scale accuracy remains within 0.1% over –10°C to +50°C ambient without factory recalibration.

Use Scenario: Industrial temperature/humidity logger with 10-year battery life and 16-bit sensor interface.

IC Role / Device Role / Timing Role: Stable excitation source for precision RTD and bridge sensor front-ends.

Use Value: 15 µA knee current allows continuous reference bias during 30-second sleep cycles, minimizing wake-up latency and power overhead.

Portable Oscilloscope Probes

Calibration Standards for Field Test Sets

Use Scenario: Active 10× oscilloscope probe with integrated gain-setting DAC and offset trim.

IC Role / Device Role / Timing Role: Reference for on-probe DAC and analog front-end offset correction circuitry.

Use Value: 0.6 Ω slope resistance ensures <1 mV output shift when probe bias current varies between 100 µA and 2 mA during bandwidth switching.

Use Scenario: Benchtop field calibration unit verifying handheld DMMs and clamp meters in utility substations.

IC Role / Device Role / Timing Role: Secondary reference in traceable 3.3 V output stage, backed by primary metrology-grade standard.

Use Value: 75 µV_rms noise floor avoids contribution to overall uncertainty budget below 10 ppm in 1-second integration measurements.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX6033AESA+	Higher initial accuracy (±0.1%), but requires 1 µF bypass capacitor and minimum 30 µA operating current	Not suitable for sub-20 µA sleep modes; better for lab-grade instruments with ample board space	Select when absolute accuracy > stability at ultra-low current is prioritized
TLV431AIDBVR	Adjustable reference (1.24–6 V), 2% tolerance, 0.3 Ω slope resistance, but 80 µA min operating current	Requires external resistor divider; unsuitable for fixed 3.3 V systems without added components	Select only if programmability or cost sensitivity outweighs fixed-voltage simplicity

Compared with MAX6033AESA+ and TLV431AIDBVR, the ZRC330F01TA uniquely balances ±1% accuracy, 15 µA knee current, and capacitor-free operation-making it optimal for compact, battery-operated equipment where BOM count and standby power are critical constraints.

Availability

ZRC330F01TA is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable test equipment, and precision sensor signal conditioning requiring stable component supply across extended production lifecycles.

Supply support for ZRC330F01TA 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 applications.

The ZRC330 series belongs to Diodes' precision voltage reference product line, engineered specifically for space- and power-constrained measurement systems requiring stable, low-drift references without external support components.

FAQ

What is the maximum capacitive load the ZRC330F01TA can drive without oscillation?

The ZRC330F01TA is explicitly characterized as stable with any capacitive load and requires no external capacitor for stability. Diodes' datasheet confirms unconditional stability up to 10 µF, verified across temperature and current ranges. This eliminates need for output filtering in portable applications where PCB real estate is constrained.

Can ZRC330F01TA be used in series with a current-limiting resistor for higher input voltages?

Yes-the device is rated for 20 V maximum reverse voltage and withstands transient currents up to 200 mA. When biased via a series resistor from a 12 V rail, a 2.2 kΩ resistor limits worst-case current to ~4.1 mA at 25°C, well within its 5 mA recommended operating range and 25 mA absolute max rating.

How does the 15 µA knee current impact system-level power budgeting?

The 15 µA knee current is the minimum current at which the device maintains regulation within specification. In systems drawing <20 µA total quiescent current, this ensures the reference remains active and accurate during deep-sleep modes-enabling wake-on-event architectures without reference re-stabilization delays or accuracy loss.

Is the ZRC330F01TA compatible with lead-free reflow profiles?

Yes-the SOT23-3 package uses lead-free terminations and green molding compound compliant with JEDEC J-STD-020D moisture sensitivity level 1. It supports standard SnPb and lead-free reflow profiles up to 260°C peak, with no special pre-bake required, making it suitable for high-volume automated assembly.

ZRC330F01TA 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:: ±1%

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

ZRC330F01TA FAQ

1.How can I place an order for ZRC330F01TA through Aetrix?

Please submit a Request for Quotation (RFQ) for ZRC330F01TA 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 ZRC330F01TA reliable?

The price and inventory of ZRC330F01TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZRC330F01TA is usually 5 days.

3.What payment methods are accepted for ZRC330F01TA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZRC330F01TA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZRC330F01TA?

ZRC330F01TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZRC330F01TA 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 ZRC330F01TA?

For technical support, including ZRC330F01TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZRC330F01TA requirements.

6.How does Aetrix verify that ZRC330F01TA is sourced from the original manufacturer or authorized distributors?

All ZRC330F01TA 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 ZRC330F01TA meets industry standards.

7.What is the process for return or replacement of ZRC330F01TA?

All ZRC330F01TA units undergo pre-shipment inspection (PSI). If there is an issue with ZRC330F01TA, 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 ZRC330F01TA part is unused and in its original packaging.

Return procedure for ZRC330F01TA:

1.Submit a request within 90 days.

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

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