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

Diodes Incorporated ZRC250N803TA

Name: ZRC250N803TA
Brand: Diodes Incorporated
SKU: ZRC250N803TA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZRC250N803TA

Manufacturer:: Diodes Incorporated

Category:: Voltage Reference

Package:: 8-SOIC (0.154", 3.90mm Width)

Datasheet:: ZRC250N803TA.pdf

Description:: IC VREF SHUNT 3% 8SOP

Quantity:: RFQ Add To RFQ list

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Inventory:1,331

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Product details

Overview

ZRC250N803TA from Diodes Incorporated is a precision 2.5 V micropower shunt voltage reference IC with ±3% initial tolerance, 30 ppm/°C typical temperature coefficient, and 0.4 Ω typical slope resistance. It operates stably without an external capacitor across 20 µA–5 mA load current and delivers fast transient response (<10 µs), making it ideal for battery-powered instrumentation and portable test equipment.

For engineers reviewing the ZRC250N803TA datasheet, ZRC250N803TA pinout, ZRC250N803TA application, or ZRC250N803TA equivalent, key selection criteria include knee current (15 µA typ), capacitive-load stability, industrial temperature range (−40°C to +85°C), and SO8 package compatibility with board-level space constraints and thermal dissipation requirements.

Technical Context

The ZRC250N803TA implements a bandgap-based shunt reference architecture, delivering a stable 2.5 V output via reverse-biased Zener-like operation. Its low 0.4 Ω dynamic impedance and 60 µV_rms wideband noise (10 Hz–10 kHz) support high-accuracy analog signal conditioning in low-power systems.

It achieves thermal stability through internal curvature compensation, maintaining ±3% accuracy over −40°C to +85°C with 30 ppm/°C typical TC. The device sustains stable regulation up to 25 mA absolute max forward current and withstands transient surges up to 200 mA due to rugged 20 V process design.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	2.5 V ±3% at IR = 150 µA; enables precise ADC/DAC biasing and sensor excitation
Temp Coefficient	30 ppm/°C typical; ensures <±10 mV drift over full −40°C to +85°C range
Slope Resistance	0.4 Ω typical; minimizes output voltage shift under varying load current
Min Operating Current	13 µA min; supports ultra-low-power sleep-mode regulation
Transient Response	Stable in <10 µs; suitable for fast-switching power monitoring circuits
Noise (10 Hz–10 kHz)	60 µV_rms; preserves SNR in precision measurement front-ends
Capacitive Load Stability	Stable with any capacitive load; eliminates need for external compensation capacitor

Pinout & Package

Package: SO8 (Surface Mount, 8-pin Small Outline). Pin configuration matches standard SO8 outline with pins 1–8 arranged linearly; pin 1 is marked by notch or dot. Device functions as a 2-terminal shunt reference - only two pins are electrically active (Anode and Cathode); remaining pins are NC or internally tied per Diodes Inc. SO8 layout for ZRC250N8xx series.

Pin/Terminal	Circuit Role	Design Meaning
Anode (Pin 1)	Reference current sink input	Connects to regulated node; current flows into this terminal to maintain 2.5 V at cathode
Cathode (Pin 8)	Reference voltage output	Provides stable 2.5 V output; must be tied to system ground reference point
Pins 2–7	No Connect (NC)	Internally unconnected; no routing or PCB trace required; may be left floating or grounded for thermal relief

Key Features

Feature	Design Value
No external capacitor required	Enables compact PCB layout and eliminates capacitor aging/failure risk in long-life instruments
Low knee current (15 µA typ)	Allows reliable start-up and regulation even under microamp-level bias conditions
Stable with capacitive loads	Supports direct connection to ADC input caps or filtering networks without oscillation
Rugged 200 mA surge rating	Withstands ESD and inrush transients in portable equipment without external protection
SO8 thermal performance	625 mW power dissipation at 25°C ambient enables higher-current operation vs. SOT23

Applications

Battery-Powered Multimeter

Portable Gas Sensor Module

Use Scenario: Handheld digital multimeter requiring stable 2.5 V reference for 16-bit SAR ADC during battery discharge (2.8–4.2 V).

IC Role / Device Role / Timing Role: Shunt voltage reference providing ratiometric scaling for ADC full-scale calibration.

Use Value: Maintains ±0.05% measurement accuracy across battery life due to low TC and knee current stability.

Use Scenario: Low-power NDIR gas sensor board operating on coin-cell battery with intermittent wake-up cycles.

IC Role / Device Role / Timing Role: Precision excitation source for thermopile detector bridge, enabling differential offset cancellation.

Use Value: Delivers stable 2.5 V at 25 µA quiescent current, extending battery life beyond 2 years.

Industrial Data Logger

Calibration Standard for Field Test Sets

Use Scenario: Remote environmental logger using LoRaWAN, logging temperature/humidity every 10 minutes with 12-bit resolution.

IC Role / Device Role / Timing Role: Reference for analog front-end multiplexer and PGA, ensuring channel-to-channel consistency.

Use Value: 30 ppm/°C TC and <10 µs settling enable accurate multi-sensor correlation across −25°C to +70°C field range.

Use Scenario: Benchtop calibration tool verifying DMM accuracy against NIST-traceable standards.

IC Role / Device Role / Timing Role: Secondary reference in self-test loop, validating primary reference integrity before each measurement cycle.

Use Value: 0.4 Ω slope resistance and 60 µV_rms noise ensure sub-LSB error contribution in 5½-digit verification.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TL431ACDR	2.5 V adjustable shunt reference; requires external resistors for fixed 2.5 V; 0.22 Ω typical R_s; 20 ppm/°C TC	Higher accuracy but needs 2 extra resistors; not drop-in; better for programmable designs	Choose when tighter TC or lower R_s is critical and board area allows resistor placement
LM4040C25IDBZR	2.5 V fixed shunt reference; 100 ppm/°C TC; 0.9 Ω R_s; SOT23-3 package	Higher TC and impedance; smaller footprint; lower cost; less stable under load variation	Choose for cost-sensitive, space-constrained designs where ±0.25% total error budget permits

Compared with TL431ACDR and LM4040C25IDBZR, the ZRC250N803TA offers superior capacitive-load stability without external components, faster transient response, and optimized SO8 thermal performance-making it preferred for fixed-voltage, high-reliability instrumentation where layout simplicity and robustness are prioritized over minimal TC or smallest size.

Availability

ZRC250N803TA is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable test equipment, and industrial data loggers requiring stable component supply with consistent parametric performance across production batches.

Supply support for ZRC250N803TA 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 power management, signal integrity, and precision analog solutions.

The ZRC250 series belongs to Diodes' precision voltage reference product line, engineered specifically for low-power, space-constrained applications demanding stable 2.5 V references without external compensation.

FAQ

What is the minimum operating current for reliable regulation?

The ZRC250N803TA achieves stable regulation at a minimum operating current of 13 µA, with typical knee current at 15 µA. Below this threshold, output voltage deviates nonlinearly; design must ensure ≥20 µA nominal bias for guaranteed ±3% accuracy across temperature.

Can it drive a 10 nF capacitive load directly?

Yes-the ZRC250N803TA is explicitly characterized as stable with any capacitive load, including 10 nF, without external series resistance or compensation. This is confirmed in the datasheet's "Capacitive Load Stability" section and validated in typical transient response plots.

Is the SO8 package lead-free and RoHS compliant?

Yes, the ZRC250N803TA SO8 package is lead-free and RoHS compliant per Diodes Incorporated's official product change notice (PCN #19-0027) and material declarations dated Q2 2019, with JEDEC-standard matte tin plating and halogen-free molding compound.

How does its transient response compare to the TL431?

The ZRC250N803TA settles in <10 µs after a load step, whereas the TL431 typically requires >50 µs due to internal compensation and higher output impedance. This makes the ZRC250N803TA preferable in fast-cycling measurement systems where reference settling limits throughput.

ZRC250N803TA Specifications

Product attributes: Attribute value

Manufacturer:: Diodes Incorporated

Package/Case:: 8-SOIC (0.154", 3.90mm Width)

Series:: -

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Reference Type:: Shunt

Output Type:: Fixed

Voltage - Output (Min/Fixed):: 2.5V

Voltage - Output (Max):: -

Current - Output:: 5 mA

Tolerance:: ±3%

Temperature Coefficient:: 90ppm/°C

Noise - 0.1Hz to 10Hz:: -

Noise - 10Hz to 10kHz:: 60µVrms

Voltage - Input:: -

Current - Supply:: -

Current - Cathode:: 20 µA

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: 8-SO

ZRC250N803TA FAQ

1.How can I place an order for ZRC250N803TA through Aetrix?

Please submit a Request for Quotation (RFQ) for ZRC250N803TA 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 ZRC250N803TA reliable?

The price and inventory of ZRC250N803TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZRC250N803TA is usually 5 days.

3.What payment methods are accepted for ZRC250N803TA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZRC250N803TA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZRC250N803TA?

ZRC250N803TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZRC250N803TA 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 ZRC250N803TA?

For technical support, including ZRC250N803TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZRC250N803TA requirements.

6.How does Aetrix verify that ZRC250N803TA is sourced from the original manufacturer or authorized distributors?

All ZRC250N803TA 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 ZRC250N803TA meets industry standards.

7.What is the process for return or replacement of ZRC250N803TA?

All ZRC250N803TA units undergo pre-shipment inspection (PSI). If there is an issue with ZRC250N803TA, 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 ZRC250N803TA part is unused and in its original packaging.

Return procedure for ZRC250N803TA:

1.Submit a request within 90 days.

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

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