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

Diodes Incorporated ZRC250F01TC

Name: ZRC250F01TC
Brand: Diodes Incorporated
SKU: ZRC250F01TC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZRC250F01TC

Manufacturer:: Diodes Incorporated

Category:: Voltage Reference

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

Datasheet:: ZRC250F01TC.pdf

Description:: IC VREF SHUNT 1% SOT23

Quantity:: RFQ Add To RFQ list

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Inventory:4,510

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Product details

Overview

ZRC250F01TC from Diodes Incorporated is a precision 2.5 V bandgap voltage reference IC with ±1% initial tolerance, 30 ppm/°C typical temperature coefficient, and 15 µA typical knee current. It operates stably from 20 µA to 5 mA without external capacitors and delivers microsecond-scale transient response (<10 µs), making it ideal for low-power portable instrumentation and battery-powered test equipment.

For engineers reviewing the ZRC250F01TC datasheet, ZRC250F01TC pinout, ZRC250F01TC application, or ZRC250F01TC equivalent, key selection criteria include knee current (15 µA typ), slope resistance (0.4 Ω typ), wide operating current range (20 µA–5 mA), industrial temperature support (−40°C to +85°C), and SOT23-3 package compatibility with space-constrained PCB layouts.

Technical Context

The ZRC250F01TC implements a bandgap-based reverse-biased Zener topology optimized for low-knee-current operation, enabling stable 2.5 V reference generation at currents as low as 13 µA. Its internal design eliminates need for external stabilization capacitance while maintaining stability under capacitive loads up to several hundred nanofarads.

It features ultra-low dynamic impedance (0.3 Ω typ at 1 mA, 100 Hz), wideband noise of 60 µV_rms (10 Hz–10 kHz), and robust transient immunity-reaching regulation in <10 µs for single pulses and repetitive events. The device withstands transient currents up to 200 mA due to 20 V process ruggedness.

Key Specifications

Parameter	Value and Actual Design Meaning
Reference Voltage	2.5 V ±1% (tight initial accuracy enables direct ADC/VREF use without trimming)
Tempco	30 ppm/°C typ (low drift supports stable measurements across −40°C to +85°C)
Knee Current	15 µA typ (enables ultra-low-power wake-up and standby modes)
Slope Resistance	0.4 Ω typ (minimizes load-induced voltage shift under varying current draw)
Dynamic Impedance	0.3 Ω @ 1 mA, 100 Hz (ensures low-noise, high-PSRR performance in sensitive analog stages)
Transient Response	<10 µs to regulation (supports fast-sampling systems requiring rapid reference settling)
Operating Current	20 µA to 5 mA (covers micropower sensor nodes and higher-drive signal chains)

Pinout & Package

Supplied in SOT23-3 package (JEDEC MO-178AA), with 1.3 mm × 2.9 mm footprint and 1.1 mm height. Pin 1 is VR (output), Pin 2 is GND, Pin 3 is NC (no connect) - internally floating or optionally tied to GND per application note.

Pin/Terminal	Circuit Role	Design Meaning
Pin 1	VR (Voltage Reference Output)	2.5 V regulated output node; connects directly to ADC VREF, op-amp reference input, or comparator threshold
Pin 2	GND (Ground)	Reference return path; must be low-impedance and separated from noisy digital ground planes
Pin 3	No Connect (NC)	Internally unconnected; may be left floating or tied to Pin 2 per layout best practice for thermal symmetry

Key Features

Feature	Design Value
No external capacitor required	Enables single-component reference solution in ultra-compact layouts (e.g., wearable sensor modules)
Low knee current (15 µA typ)	Supports operation below 20 µA-critical for energy-harvesting and coin-cell applications
Stable with capacitive loads	Eliminates risk of oscillation when driving ADC input caps or long PCB traces
Green molding compound (Br/Sb-free)	Meets RoHS 2011/65/EU and JEDEC J-STD-020 reflow compliance for lead-free assembly
Transient survival to 200 mA	Withstands ESD and surge events without latch-up or parametric shift

Applications

Battery-Powered Portable Meters

Portable Data Acquisition Units

Use Scenario: Handheld multimeters and clamp meters powered by AA/AAA cells with intermittent measurement cycles.

IC Role / Device Role / Timing Role: Primary 2.5 V reference for 16-bit SAR ADC and analog front-end gain calibration.

Use Value: 15 µA knee current extends battery life >2× vs. legacy references; ±1% tolerance avoids factory calibration.

Use Scenario: Field-deployable environmental sensors logging temperature/humidity via microcontroller ADC.

IC Role / Device Role / Timing Role: Stable reference for ratiometric sensor excitation and ADC conversion in sleep-wake cycles.

Use Value: Sub-10 µs settling enables accurate sampling within tight duty-cycle windows; 30 ppm/°C drift ensures field accuracy over −20°C to +60°C.

Automated Test Equipment (ATE) Probes

Industrial Process Monitoring Modules

Use Scenario: Modular probe cards requiring fast-recovering, low-drift references for millisecond-level test sequences.

IC Role / Device Role / Timing Role: Precision voltage source for DUT biasing and reference comparison in go/no-go pass-fail logic.

Use Value: 0.4 Ω slope resistance minimizes error under dynamic load switching; green compound ensures compatibility with lead-free reflow profiles.

Use Scenario: DIN-rail mounted PLC I/O modules measuring 4–20 mA loop signals in factory environments.

IC Role / Device Role / Timing Role: Reference for isolated current-to-voltage conversion and sigma-delta ADC digitization.

Use Value: Stability over −40°C to +85°C eliminates thermal recalibration; 200 mA surge tolerance protects against field wiring transients.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
MAX6025AESA+	2.5 V ±0.16% initial accuracy, 10 ppm/°C tempco, 65 µA min operating current	Higher accuracy and lower drift, but requires ≥65 µA-unsuitable for sub-50 µA systems	Select when absolute accuracy and long-term stability outweigh ultra-low power needs
TLV431AIDBVR	Adjustable 1.24 V shunt reference, 2% initial tolerance, 90 ppm/°C tempco, 80 µA min cathode current	Requires external resistors to set 2.5 V; higher drift and looser tolerance than ZRC250F01TC	Choose only if board space allows resistor network and system tolerates wider voltage variation

Compared with MAX6025AESA+ and TLV431AIDBVR, the ZRC250F01TC uniquely balances ±1% accuracy, 30 ppm/°C drift, and 15 µA knee current in a fixed 2.5 V SOT23-3 package-making it optimal for cost-sensitive, battery-limited applications where moderate precision suffices.

Availability

ZRC250F01TC is available at Aetrix Electronics and suitable for battery-powered portable meters, portable data acquisition units, automated test equipment probes, and industrial process monitoring modules requiring stable component supply and consistent parametric performance across production lots.

Supply support for ZRC250F01TC 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, Taiwan, and the U.S.

The ZRC series targets precision analog signal conditioning in resource-constrained systems, emphasizing low-power operation, small footprint, and industrial-grade reliability without external support components.

FAQ

What is the minimum operating current for reliable regulation?

The ZRC250F01TC achieves stable regulation at 13 µA minimum (typical knee current is 15 µA). Below this, output voltage deviates nonlinearly. For guaranteed specification compliance, operate at ≥20 µA per datasheet conditions.

Can Pin 3 be used as a thermal pad or connected to ground?

Pin 3 is internally unconnected (NC). Diodes Incorporated documentation states it may be left floating or tied to Pin 2 (GND) for improved thermal symmetry and mechanical stability-no electrical function is added or altered by this connection.

Is the ZRC250F01TC compatible with lead-free reflow processes?

Yes. The device uses a green molding compound compliant with RoHS Directive 2011/65/EU and meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1), supporting standard Pb-free reflow profiles up to 260°C peak temperature.

How does its noise performance compare to other 2.5 V references?

At 60 µV_rms (10 Hz–10 kHz), the ZRC250F01TC exhibits lower wideband noise than most shunt references in its class (e.g., TL431: ~100 µV_rms). This enables higher effective resolution in 16-bit ADC systems without additional filtering.

ZRC250F01TC 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):: 2.5V

Voltage - Output (Max):: -

Current - Output:: 5 mA

Tolerance:: ±1%

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:: SOT-23-3

ZRC250F01TC FAQ

1.How can I place an order for ZRC250F01TC through Aetrix?

Please submit a Request for Quotation (RFQ) for ZRC250F01TC 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 ZRC250F01TC reliable?

The price and inventory of ZRC250F01TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZRC250F01TC is usually 5 days.

3.What payment methods are accepted for ZRC250F01TC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZRC250F01TC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZRC250F01TC?

ZRC250F01TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZRC250F01TC 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 ZRC250F01TC?

For technical support, including ZRC250F01TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZRC250F01TC requirements.

6.How does Aetrix verify that ZRC250F01TC is sourced from the original manufacturer or authorized distributors?

All ZRC250F01TC 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 ZRC250F01TC meets industry standards.

7.What is the process for return or replacement of ZRC250F01TC?

All ZRC250F01TC units undergo pre-shipment inspection (PSI). If there is an issue with ZRC250F01TC, 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 ZRC250F01TC part is unused and in its original packaging.

Return procedure for ZRC250F01TC:

1.Submit a request within 90 days.

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

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