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

Diodes Incorporated ZRC250F01TA

Name: ZRC250F01TA
Brand: Diodes Incorporated
SKU: ZRC250F01TA
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZRC250F01TA

Manufacturer:: Diodes Incorporated

Category:: Voltage Reference

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

Datasheet:: ZRC250F01TA.pdf

Description:: IC VREF SHUNT 1% SOT23

Quantity:: RFQ Add To RFQ list

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Inventory:67,903

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Product details

Overview

ZRC250F01TA 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 ADC/DAC biasing in portable instrumentation.

For engineers reviewing the ZRC250F01TA datasheet, ZRC250F01TA pinout, ZRC250F01TA application, or ZRC250F01TA equivalent, key selection criteria include knee current (15 µA typ), slope resistance (0.4 Ω typ), noise (60 µV_rms), thermal stability (30 ppm/°C), and SOT23-3 package compatibility in space-constrained battery-powered systems.

Technical Context

The ZRC250F01TA implements a bandgap-based reverse-biased Zener topology optimized for low-knee-current operation, enabling stable 2.5 V regulation down to 13 µA minimum supply current. Its internal curvature compensation achieves 30 ppm/°C typical TC over –40°C to +85°C.

It exhibits 0.4 Ω typical slope resistance and 0.3 Ω to 0.8 Ω dynamic impedance (100 Hz, I_AC = 0.1I_R), ensuring minimal output deviation under load transients. The device remains stable with capacitive loads and requires no external stabilization capacitor.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	2.5 V ±1% (tight initial accuracy enables direct ADC reference without trimming)
Tempco	30 ppm/°C typical (low drift supports stable measurement over industrial temperature range)
Knee Current	15 µA typical (enables ultra-low-power wake-up and standby modes)
Slope Resistance	0.4 Ω typical (minimizes load-induced voltage shift in precision sensor interfaces)
Wideband Noise	60 µV_rms (10 Hz–10 kHz) (supports high-resolution analog signal chains)
Transient Response	<10 µs to settle (enables fast power-on calibration in portable test equipment)
Operating Current Range	13 µA to 5 mA (broad compliance for both micropower and moderate-drive applications)

Pinout & Package

Supplied in SOT23-3 package (JEDEC TO-236AB), 2.9 mm × 1.3 mm footprint, 1.1 mm height, with gull-wing leads. RoHS-compliant, green molding compound (Br/Sb-free).

Pin/Terminal	Circuit Role	Design Meaning
1	Anode / Input	Reverse-biased input terminal; typically left floating or tied to Pin 2 for improved stability per datasheet recommendation
2	Cathode / Ground	Reference ground return path; must be low-impedance for noise immunity
3	Output / Cathode	Stable 2.5 V reference output; connects directly to ADC REF+ or op-amp bias networks

Key Features

Feature	Design Value
No external capacitor required	Enables single-component reference design, reducing BOM count and PCB area in wearables and sensor nodes
Low knee current (15 µA typ)	Supports operation in energy-harvesting systems where supply current is limited below 20 µA
Stable with capacitive loads	Eliminates need for isolation resistors when driving SAR ADC sample-and-hold inputs
Microsecond transient response (<10 µs)	Allows rapid re-referencing after power cycling in portable multimeters and data loggers
Green molding compound	Complies with IPC/JEDEC J-STD-609A Class 1 halogen-free requirements for industrial and medical end equipment

Applications

Battery-Powered Multimeters

Portable Gas Detectors

Use Scenario: Handheld digital multimeter requiring stable 2.5 V reference for 16-bit sigma-delta ADC during 100 ms auto-ranging cycles.

IC Role / Device Role / Timing Role: Primary voltage reference for ADC conversion and internal DAC calibration.

Use Value: 30 ppm/°C tempco ensures <±0.02% full-scale error across –10°C to +50°C operating range without software compensation.

Use Scenario: Low-power electrochemical gas sensor node powered by coin cell, sampling every 5 seconds.

IC Role / Device Role / Timing Role: Bias reference for transimpedance amplifier and ADC reference in analog front-end.

Use Value: 15 µA knee current allows continuous reference operation while maintaining >5-year battery life at 2.2 µA average system current.

Medical Patient Monitors

Industrial Loop-Powered Transmitters

Use Scenario: Portable ECG module with isolated analog front-end and 24-bit ADC.

IC Role / Device Role / Timing Role: Precision reference for analog signal conditioning and ADC reference in isolated domain.

Use Value: 60 µV_rms wideband noise prevents degradation of SNR in sub-µV biopotential measurements.

Use Scenario: 4–20 mA loop transmitter with HART modulation, operating from 12–42 V loop supply.

IC Role / Device Role / Timing Role: Stable 2.5 V reference for DAC and sensor excitation circuitry.

Use Value: 0.4 Ω slope resistance limits reference voltage shift to <1 mV under 10 mA load variation from HART AC coupling.

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, 15 ppm/°C max TC, 65 µA min operating current	Higher accuracy and lower TC but requires ≥65 µA supply - unsuitable for sub-20 µA systems	Select when absolute accuracy dominates over ultra-low-power operation
ADR3425ARJZ-R7	2.5 V ±0.1% initial accuracy, 10 ppm/°C max TC, 100 µA min operating current, 50 µV_rms noise	Lower noise and tighter TC, but higher knee current and larger SOT23-5 footprint	Select when system has margin for supply current and board space, and demands sub-10 ppm/°C stability

Compared with MAX6025AESA+ and ADR3425ARJZ-R7, the ZRC250F01TA uniquely balances ±1% tolerance, 15 µA knee current, and SOT23-3 size-making it the only viable choice for space- and power-constrained portable instrumentation where <20 µA operation is mandatory.

Availability

ZRC250F01TA is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable test equipment, and industrial loop-powered transmitters requiring stable component supply with guaranteed long-term availability.

Supply support for ZRC250F01TA 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 industrial, computing, consumer, and communications markets.

The ZRC series targets cost-sensitive, space-constrained precision analog applications-specifically delivering low-knee-current, capacitor-free voltage references for portable and battery-operated systems.

FAQ

What is the recommended PCB layout for minimizing noise in ZRC250F01TA applications?

Place the device within 5 mm of the ADC reference input pin, use a solid ground plane beneath the SOT23-3 footprint, route the output trace as short and wide as possible, and avoid routing noisy signals (e.g., clocks or switching regulators) adjacent to the reference net. A 0.1 µF ceramic decoupling capacitor between Pin 3 and Pin 2 is optional but not required for stability.

Can ZRC250F01TA drive a 10 kΩ load directly without significant error?

Yes. With 0.4 Ω typical slope resistance, loading with 10 kΩ introduces only ~0.1 mV error (0.004% of 2.5 V). Even at 1 kΩ load, error remains below 0.25 mV. No buffer amplifier is needed for typical precision ADC or op-amp biasing applications.

Is ZRC250F01TA qualified for automotive applications?

No. It is specified for industrial temperature range (–40°C to +85°C) and lacks AEC-Q200 qualification, automotive-grade screening, or extended temperature support. For automotive use, consider Diodes' AP2301 or ASL2301 series, which are AEC-Q100 qualified.

How does the "floating Pin 1" configuration improve performance?

Leaving Pin 1 unconnected (or tying it to Pin 2) reduces parasitic capacitance and improves transient response and noise rejection. The datasheet confirms this configuration yields optimal stability and fastest settling time (<10 µs), especially critical in fast-sampling data acquisition systems.

ZRC250F01TA 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):: 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

ZRC250F01TA FAQ

1.How can I place an order for ZRC250F01TA through Aetrix?

Please submit a Request for Quotation (RFQ) for ZRC250F01TA 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 ZRC250F01TA reliable?

The price and inventory of ZRC250F01TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZRC250F01TA is usually 5 days.

3.What payment methods are accepted for ZRC250F01TA?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZRC250F01TA transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZRC250F01TA?

ZRC250F01TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZRC250F01TA 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 ZRC250F01TA?

For technical support, including ZRC250F01TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZRC250F01TA requirements.

6.How does Aetrix verify that ZRC250F01TA is sourced from the original manufacturer or authorized distributors?

All ZRC250F01TA 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 ZRC250F01TA meets industry standards.

7.What is the process for return or replacement of ZRC250F01TA?

All ZRC250F01TA units undergo pre-shipment inspection (PSI). If there is an issue with ZRC250F01TA, 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 ZRC250F01TA part is unused and in its original packaging.

Return procedure for ZRC250F01TA:

1.Submit a request within 90 days.

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

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