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

Diodes Incorporated ZRC400F01TA

Name: ZRC400F01TA
Brand: Diodes Incorporated
SKU: ZRC400F01TA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZRC400F01TA

Manufacturer:: Diodes Incorporated

Category:: Voltage Reference

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

Datasheet:: ZRC400F01TA.pdf

Description:: IC VREF SHUNT 1% SOT23

Quantity:: RFQ Add To RFQ list

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Inventory:8,588

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Product details

Overview

ZRC400F01TA from Diodes Incorporated is a precision 4.096 V bandgap voltage reference IC in SOT23-3 package, featuring 1% initial tolerance, 30 ppm/°C typical temperature coefficient, and 0.4 Ω typical slope resistance. It operates from 23 μA to 5 mA, requires no external capacitor, and stabilizes in under 10 μs-ideal for battery-powered data acquisition front-ends.

For engineers reviewing the ZRC400F01TA datasheet, ZRC400F01TA pinout, ZRC400F01TA application, or ZRC400F01TA equivalent, key selection criteria include knee current (18 μA typ), load regulation stability, TC performance across –40°C to +85°C, and compatibility with low-noise ADC biasing circuits.

Technical Context

The ZRC400F01TA implements a two-terminal shunt topology with internal bandgap core, delivering fixed 4.096 V reverse breakdown voltage at 150 μA test current. Its low 0.4 Ω dynamic impedance and 90 μV_rms wideband noise (10 Hz–10 kHz) support high-resolution analog signal conditioning.

Designed for direct replacement of Zener-based references, it eliminates external stabilization capacitors while maintaining stability into capacitive loads up to 10 nF. Transient response settles within 10 μs due to optimized internal compensation and low output impedance.

Key Specifications

Parameter	Value and Actual Design Meaning
Reference Voltage	4.096 V ±1% - precise mid-scale point for 12-bit ADCs using 3.3 V or 5 V supplies
Tempco (TC)	30 ppm/°C typ - ensures ≤±1.2 mV drift over –40°C to +85°C industrial range
Slope Resistance	0.4 Ω typ - enables <1 mV load regulation error for ±1 mA output current variation
Knee Current	18 μA typ - allows stable operation down to ultra-low-power sensor biasing
Stabilization Time	<10 μs - supports fast-sampling systems requiring rapid reference settling between conversions
Noise (10 Hz–10 kHz)	90 μV_rms - contributes <0.022% RMS error in 4.096 V full-scale 16-bit measurement
Operating Current Range	23 μA to 5 mA - compatible with both microamp-level standby and milliamp-level active modes

Pinout & Package

SOT23-3 package (JEDEC MO-178AA), 2.8 mm × 2.64 mm × 1.12 mm body, gull-wing leads, RoHS-compliant "Green" molding compound.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Pin 1)	Current sink input	Connects to supply rail; sets operating current via series resistor
Cathode (Pin 2)	Reference output	Provides stable 4.096 V node; must be decoupled locally if driving noisy loads
No-connect (Pin 3)	Unused terminal	Internally floating; left unconnected per datasheet-no tie-to-ground or supply required

Key Features

Feature	Design Value
No external capacitor needed	Enables single-component reference design with guaranteed stability into 10 nF capacitive loads
Low knee current (18 μA)	Supports operation in energy-harvesting sensors where supply current is limited to <25 μA
Fast transient response (<10 μs)	Reduces reference settling delay in multiplexed ADC architectures with channel switching
1% initial tolerance	Eliminates post-manufacturing trimming in cost-sensitive portable instrumentation
Industrial temp range (–40°C to +85°C)	Validated performance for field-deployed metering hardware without derating

Applications

Portable Multimeter Front-End

Battery-Powered Data Logger

Use Scenario: High-impedance voltage measurement circuitry in handheld DMMs requiring stable scaling reference.

IC Role / Device Role / Timing Role: Two-terminal shunt voltage reference providing 4.096 V reference for dual-slope integrator ADC.

Use Value: 30 ppm/°C TC and 90 μV_rms noise ensure ≤0.01% measurement accuracy across operating temperature and battery discharge cycles.

Use Scenario: Long-life environmental sensor node logging temperature/humidity with 12-bit SAR ADC.

IC Role / Device Role / Timing Role: Low-power voltage reference supplying bias to ADC and analog front-end op-amps.

Use Value: 18 μA knee current enables continuous reference operation from coin-cell batteries for >5 years at 1 sample/sec.

Industrial Panel Meter

Calibration Equipment Reference

Use Scenario: DIN-rail mounted power meter with isolated analog inputs and local signal conditioning.

IC Role / Device Role / Timing Role: Primary reference for isolated sigma-delta ADC measuring AC line voltage/current.

Use Value: 0.4 Ω slope resistance minimizes gain drift during load transients caused by digital isolation barrier switching.

Use Scenario: Benchtop calibration source verifying 4–20 mA loop calibrators and multimeters.

IC Role / Device Role / Timing Role: Stable, low-drift reference used in precision DAC output stage trimming.

Use Value: 1% initial tolerance and verified 90 ppm/°C max TC allow traceable 0.1% calibration without factory adjustment.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TL431ACDBZR	2.495 V adjustable reference; requires external resistors for 4.096 V; higher 22 Ω typical slope resistance	Needs redesign of feedback network; less suitable for space-constrained PCBs	Choose when adjustable output or higher current capability (up to 100 mA) is required
MAX6008AEUR+T	4.096 V fixed reference; 15 ppm/°C max TC; 10 μA max quiescent current; SOT23-3	Lower drift but tighter supply current spec; not rated for 200 mA surge	Prefer for metrology-grade TC performance where surge immunity is not critical

Compared with TL431ACDBZR and MAX6008AEUR+T, the ZRC400F01TA offers best-in-class combination of ultra-low knee current, minimal board area, and robust transient handling-making it optimal for compact, battery-operated measurement systems where reliability under varying load conditions is essential.

Availability

ZRC400F01TA is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered data loggers, and industrial panel meters requiring stable component supply with consistent parametric performance across production lots.

Supply support for ZRC400F01TA 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, with design centers across Asia and manufacturing in China, Malaysia, and Taiwan.

The ZRC400 series belongs to Diodes' precision voltage reference product line, engineered specifically for low-power, space-constrained measurement and sensing applications demanding high initial accuracy and stable thermal behavior.

FAQ

Is ZRC400F01TA a three-terminal or two-terminal device?

ZRC400F01TA is a two-terminal shunt voltage reference: Pin 1 (Anode) and Pin 2 (Cathode) form the functional terminals; Pin 3 is internally unconnected and must remain floating. It operates like a precision Zener diode, sinking current from a supply through an external resistor to establish the reference voltage at the cathode.

Can ZRC400F01TA drive a 10 nF capacitive load without oscillation?

Yes-the ZRC400F01TA is explicitly characterized for stability with capacitive loads up to 10 nF without requiring an external series resistor or capacitor. This is confirmed in the datasheet's "Stability with Capacitive Loads" section and validated by its internal compensation design.

What is the maximum safe operating current for continuous use?

The absolute maximum continuous operating current is 25 mA per Absolute Maximum Ratings. However, for reliable long-term operation within specifications, the recommended range remains 23 μA to 5 mA; operation above 5 mA increases self-heating and may degrade TC and long-term stability.

Does ZRC400F01TA require PCB layout precautions for low-noise performance?

Yes-place a 100 nF X7R ceramic capacitor between cathode (Pin 2) and ground, located within 2 mm of the device. Route the anode (Pin 1) connection away from noisy digital traces, and avoid shared return paths with switching regulators to preserve the 90 μV_rms noise specification.

ZRC400F01TA 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):: 4.096V

Voltage - Output (Max):: -

Current - Output:: 5 mA

Tolerance:: ±1%

Temperature Coefficient:: 90ppm/°C

Noise - 0.1Hz to 10Hz:: -

Noise - 10Hz to 10kHz:: 90µVrms

Voltage - Input:: -

Current - Supply:: -

Current - Cathode:: 23 µA

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

ZRC400F01TA FAQ

1.How can I place an order for ZRC400F01TA through Aetrix?

Please submit a Request for Quotation (RFQ) for ZRC400F01TA 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 ZRC400F01TA reliable?

The price and inventory of ZRC400F01TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZRC400F01TA is usually 5 days.

3.What payment methods are accepted for ZRC400F01TA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZRC400F01TA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZRC400F01TA?

ZRC400F01TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZRC400F01TA 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 ZRC400F01TA?

For technical support, including ZRC400F01TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZRC400F01TA requirements.

6.How does Aetrix verify that ZRC400F01TA is sourced from the original manufacturer or authorized distributors?

All ZRC400F01TA 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 ZRC400F01TA meets industry standards.

7.What is the process for return or replacement of ZRC400F01TA?

All ZRC400F01TA units undergo pre-shipment inspection (PSI). If there is an issue with ZRC400F01TA, 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 ZRC400F01TA part is unused and in its original packaging.

Return procedure for ZRC400F01TA:

1.Submit a request within 90 days.

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

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