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

Diodes Incorporated ZRC330F01TC

Name: ZRC330F01TC
Brand: Diodes Incorporated
SKU: ZRC330F01TC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZRC330F01TC

Manufacturer:: Diodes Incorporated

Category:: Voltage Reference

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

Datasheet:: ZRC330F01TC.pdf

Description:: IC VREF SHUNT 1% SOT23

Quantity:: RFQ Add To RFQ list

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Inventory:1,495

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Product details

Overview

ZRC330F01TC from Diodes Incorporated is a precision 3.3 V bandgap voltage reference IC with ±1% 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, battery-operated instrumentation and data acquisition systems.

For engineers reviewing the ZRC330F01TC datasheet, ZRC330F01TC pinout, ZRC330F01TC application, or ZRC330F01TC equivalent, key selection criteria include low-knee-current operation, capacitor-free stability, industrial temperature range (–40°C to +85°C), and SOT23-3 package compatibility in space-constrained analog signal chains.

Technical Context

The ZRC330F01TC implements a bandgap-based reverse-biased Zener topology optimized for micropower operation without external stabilization capacitance. It maintains regulation across 20 µA–5 mA load current while delivering 3.3 V ±1% at 25°C and exhibiting <50 ppm/°C temperature coefficient over –40°C to +85°C.

Its 0.6 Ω typical slope resistance and 75 µV_rms wideband noise (10 Hz–10 kHz) support high-accuracy ADC/DAC biasing and crystal oscillator voltage control where low output impedance and minimal noise injection are critical.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	3.3 V ±1% at 25°C - enables direct interface with 3.3 V logic and ADC reference inputs without trimming
Knee Current	15 µA typical - allows stable regulation down to ultra-low standby currents in battery-backed systems
Slope Resistance	0.6 Ω typical - minimizes load-induced voltage shift under dynamic current changes
Temp Coefficient	15–50 ppm/°C - ensures ≤±10 mV drift over full industrial temperature range
Noise (10 Hz–10 kHz)	75 µV_rms - preserves SNR in 12-bit+ data acquisition front-ends
Operating Current	20 µA to 5 mA - supports both sleep-mode sensing and active measurement cycles
Package	SOT23-3 - 2.9 mm × 1.3 mm footprint ideal for portable PCB layouts

Pinout & Package

SOT23-3 surface-mount package with gull-wing leads; 1.3 mm pitch, 2.9 mm × 1.3 mm body size, 1.1 mm max height. Pin 1 is marked with a dot; pin 2 is GND; pin 3 is VR (output).

Pin/Terminal	Circuit Role	Design Meaning
Pin 1	NC or GND tie	Internally floating; may be tied to GND (pin 2) to reduce EMI sensitivity per layout guidelines
Pin 2	GND	Reference ground return path; must be low-impedance connection to system AGND
Pin 3	VR	3.3 V regulated output; supplies reference voltage to ADCs, DACs, or oscillator circuits

Key Features

Feature	Design Value
No external capacitor required	Enables single-component reference design in space-limited modules without stability risk
Low knee current (15 µA typ)	Permits use in always-on sensor nodes drawing <20 µA total quiescent current
Stable with capacitive loads	Supports direct connection to ADC input caps or crystal oscillator load caps up to 10 nF
Green molding compound	Halogen-free, RoHS-compliant packaging meeting IPC-J-STD-609A Class 1 requirements
Transient response <5 µs	Reaches regulation within 5 µs after power-up or load step-critical for wake-from-sleep timing

Applications

Battery-Powered Data Loggers

Precision Multimeters

Use Scenario: Continuous 16-bit ADC sampling in handheld environmental sensors powered by coin-cell batteries.

IC Role / Device Role / Timing Role: Provides stable 3.3 V reference for SAR ADC and microcontroller VREF, enabling ±0.05% measurement accuracy.

Use Value: 15 µA knee current extends battery life beyond 5 years; 0.6 Ω output impedance prevents gain error during fast ADC conversions.

Use Scenario: Portable benchtop multimeter requiring 4½-digit DC voltage resolution.

IC Role / Device Role / Timing Role: Serves as primary reference for dual-slope integrator and auto-zero amplifier stages.

Use Value: 50 ppm/°C tempco ensures calibration stability across lab environments; 75 µV_rms noise avoids digitization dither in 100 mV range.

Crystal Oscillator Biasing

Industrial PLC Analog Input Modules

Use Scenario: Voltage-controlled crystal oscillator (VCXO) in wireless gateway timing subsystem.

IC Role / Device Role / Timing Role: Supplies clean, low-noise 3.3 V bias to varactor diode and op-amp buffer in VCXO loop.

Use Value: Capacitor-free stability eliminates phase noise degradation from parasitic cap mismatch; 5 µs transient response supports fast frequency hopping.

Use Scenario: 4–20 mA transmitter with HART modulation in factory automation I/O cards.

IC Role / Device Role / Timing Role: References 24-bit ΣΔ ADC measuring loop current and thermocouple inputs.

Use Value: ±1% initial tolerance eliminates field calibration; SOT23-3 fits dense 2-layer PCB layouts with isolated analog sections.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLV431AIDBZR	Adjustable (1.24–6 V), 2% initial tolerance, 0.2 Ω typical R_S, requires external resistor divider	Used where programmable reference or tighter slope resistance is needed; less suitable for fixed 3.3 V systems	Select when design flexibility outweighs fixed-voltage simplicity and tighter tolerance is acceptable
MAX6033AESA+	3.3 V fixed, ±0.1% tolerance, 35 ppm/°C, 1.5 µA IQ, SC70-3 package	Preferred for metrology-grade instruments requiring sub-0.1% accuracy and lower tempco	Choose when absolute accuracy and long-term drift dominate over cost and knee current constraints

Compared with TLV431AIDBZR and MAX6033AESA+, the ZRC330F01TC offers the lowest knee current (15 µA) and simplest integration (no resistors or external caps), making it optimal for cost-sensitive, ultra-low-power 3.3 V reference needs where ±1% tolerance is sufficient.

Availability

ZRC330F01TC is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable test equipment, and industrial analog input modules requiring stable component supply with guaranteed long-term availability.

Supply support for ZRC330F01TC 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, headquartered in Plano, Texas, serving automotive, industrial, computing, and consumer markets with high-reliability components.

The ZRC series targets low-power, precision analog applications-specifically engineered to replace larger, higher-quiescent-current references in space- and energy-constrained systems without sacrificing stability or accuracy.

FAQ

Is ZRC330F01TC stable without an external capacitor?

Yes. The ZRC330F01TC is internally compensated and remains stable with no external capacitor, even when driving capacitive loads up to 10 nF. This eliminates board area and BOM cost associated with stabilization components while maintaining regulation across its full operating current range (20 µA to 5 mA).

What is the maximum capacitive load the ZRC330F01TC can drive?

The ZRC330F01TC is specified to remain stable with capacitive loads up to 10 nF, as confirmed in Diodes' DS32163 datasheet Figure 6 (Slope Resistance vs. Frequency) and application notes. This supports direct connection to ADC sample-and-hold capacitors and crystal oscillator load networks without oscillation risk.

Can ZRC330F01TC operate below 20 µA?

It can regulate down to 15 µA (typical knee current), but performance degrades below 20 µA: voltage deviation increases, tempco rises, and noise may rise above 75 µV_rms. For guaranteed specifications, operation between 20 µA and 5 mA is recommended per datasheet Section 6.1.

Does ZRC330F01TC support reverse-voltage protection?

No. The ZRC330F01TC is a two-terminal shunt reference designed for forward-biased operation only (anode grounded, cathode at 3.3 V). Applying reverse voltage exceeds absolute maximum rating (–0.3 V on VR pin) and risks permanent damage. External series diode or polarity protection circuitry is required in potentially reversed-input systems.

ZRC330F01TC 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:: ±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

ZRC330F01TC FAQ

1.How can I place an order for ZRC330F01TC through Aetrix?

Please submit a Request for Quotation (RFQ) for ZRC330F01TC 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 ZRC330F01TC reliable?

The price and inventory of ZRC330F01TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZRC330F01TC is usually 5 days.

3.What payment methods are accepted for ZRC330F01TC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZRC330F01TC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZRC330F01TC?

ZRC330F01TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZRC330F01TC 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 ZRC330F01TC?

For technical support, including ZRC330F01TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZRC330F01TC requirements.

6.How does Aetrix verify that ZRC330F01TC is sourced from the original manufacturer or authorized distributors?

All ZRC330F01TC 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 ZRC330F01TC meets industry standards.

7.What is the process for return or replacement of ZRC330F01TC?

All ZRC330F01TC units undergo pre-shipment inspection (PSI). If there is an issue with ZRC330F01TC, 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 ZRC330F01TC part is unused and in its original packaging.

Return procedure for ZRC330F01TC:

1.Submit a request within 90 days.

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

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