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

Diodes Incorporated ZRC500F01TC

Name: ZRC500F01TC
Brand: Diodes Incorporated
SKU: ZRC500F01TC
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: ZRC500F01TC

Manufacturer:: Diodes Incorporated

Category:: Voltage Reference

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

Datasheet:: ZRC500F01TC.pdf

Description:: IC VREF SHUNT 1% SOT23

Quantity:: RFQ Add To RFQ list

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Inventory:3,243

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Product details

Overview

ZRC500F01TC from Diodes Incorporated is a precision 5.0 V bandgap voltage reference IC with ±1% initial tolerance, 30 ppm/°C typical temperature coefficient, and 19 µA typical knee current. It operates stably from 25 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 metering systems.

For engineers reviewing the ZRC500F01TC datasheet, ZRC500F01TC pinout, ZRC500F01TC application, or ZRC500F01TC equivalent, key selection criteria include knee current (19 µA typ), slope resistance (0.4 Ω typ), TC (30 ppm/°C typ), noise (105 µV_rms), and SOT23-3 package compatibility in space-constrained designs.

Technical Context

The ZRC500F01TC implements a bandgap-based reverse-breakdown architecture optimized for low-knee-current operation, enabling stable 5.0 V regulation down to 19 µA. Its internal design eliminates need for external stabilization capacitance while maintaining stability under capacitive loads up to 1 nF.

It achieves fast settling via low output impedance (0.4 Ω typ) and wideband noise performance (105 µV_rms, 10 Hz–10 kHz), supporting high-accuracy ADC/DAC biasing and precision analog signal conditioning in industrial measurement front-ends.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	5.00 V ±1% at 150 µA - ensures accurate system-level voltage scaling for 12-bit+ data converters
Knee Current	19 µA typical - enables reliable startup and regulation in ultra-low-power sleep modes
Temp Coefficient	30 ppm/°C typical - limits full-range drift to ±2.4 mV over −40°C to +85°C
Slope Resistance	0.4 Ω typical - minimizes load-induced voltage shift under dynamic current steps
Transient Response	<10 µs to settle - supports rapid power-up sequencing in portable test equipment
Wideband Noise	105 µV_rms (10 Hz–10 kHz) - preserves SNR in high-resolution sensor signal chains
Operating Current	25 µA to 5 mA - covers standby sensing and active measurement phases in single-supply designs

Pinout & Package

Supplied in SOT23-3 package (JEDEC MO-178AA), 2.9 mm × 1.3 mm footprint, 1.1 mm height, with gull-wing leads and green molding compound (Br/Sb-free).

Pin/Terminal	Circuit Role	Design Meaning
1	NC or GND	Internally unconnected; may be tied to Pin 2 (GND) for mechanical stability per datasheet recommendation
2	GND	Reference ground return path; must be low-impedance for noise immunity and TC accuracy
3	VR (Anode)	5.0 V output terminal; reverse-biased configuration requires connection to higher-potential rail

Key Features

Feature	Design Value
No external capacitor required	Enables direct integration into compact PCB layouts without stability-compromising layout constraints
Low knee current (19 µA typ)	Permits use with high-value pull-up resistors or micropower LDOs in energy-harvesting nodes
Stable with capacitive loads	Supports direct buffering of ADC reference inputs without series isolation resistor
Fast transient response (<10 µs)	Reduces reference settling delay during multiplexed channel acquisition in portable DMMs
Green molding compound	Meets RoHS and JEDEC J-STD-020 reflow compliance for lead-free assembly

Applications

Battery-Powered Multimeters

Portable Gas Detectors

Use Scenario: Handheld digital multimeter requiring stable 5.0 V reference across 0–50°C ambient range and varying battery voltage (3.0–4.2 V Li-ion).

IC Role / Device Role / Timing Role: Precision voltage reference for 16-bit SAR ADC and display driver biasing.

Use Value: ±1% tolerance and 30 ppm/°C TC ensure <±0.5% full-scale reading error without calibration across operating life.

Use Scenario: Low-power electrochemical gas sensor node powered by coin cell, sampling every 30 seconds.

IC Role / Device Role / Timing Role: Reference source for transimpedance amplifier and analog front-end gain setting.

Use Value: 19 µA knee current allows continuous reference biasing during 28-second sleep cycles, eliminating wake-up delay.

Smart Electricity Meters

Industrial Panel Meters

Use Scenario: Revenue-grade electricity meter with isolated MCU and metrology ASIC operating from 3.3 V rail.

IC Role / Device Role / Timing Role: Primary reference for metrology ADC and real-time clock voltage monitor.

Use Value: 0.4 Ω slope resistance prevents >10 µV shift under 1 mA load transients from communication bursts.

Use Scenario: DIN-rail mounted panel meter with 4–20 mA loop-powered design and local display.

IC Role / Device Role / Timing Role: Stable 5.0 V supply for microcontroller I/O and LCD controller logic.

Use Value: Capacitive-load stability allows direct connection to 100 nF decoupling cap on display driver IC, reducing BOM count.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
TLVH431AIDBZR	Adjustable (2.5 V setpoint), 100 ppm/°C max TC, 80 µA min cathode current	Requires external resistor divider; less suitable for fixed 5.0 V systems without trimming	Choose when adjustable output or tighter output tolerance (0.5%) is needed despite higher knee current
REF3050AIDBZR	5.0 V fixed, 50 ppm/°C max TC, 50 µA min supply current, 3.6 µV_rms noise	Lower noise but higher knee current and larger SOT23-5 footprint	Prefer for ultra-low-noise applications where board space and quiescent current are secondary concerns

Compared with TLVH431AIDBZR and REF3050AIDBZR, the ZRC500F01TC offers the lowest knee current (19 µA) and smallest footprint (SOT23-3), making it optimal for space- and energy-constrained portable instrumentation where fixed 5.0 V is acceptable.

Availability

ZRC500F01TC is available at Aetrix Electronics and suitable for battery-powered multimeters, portable gas detectors, and smart electricity meters requiring stable component supply with consistent parametric performance across production lots.

Supply support for ZRC500F01TC 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, cost-optimized components for industrial, computing, and consumer markets.

The ZRC500 series belongs to Diodes' precision voltage reference product line, engineered specifically for low-power, space-constrained applications demanding stable 5.0 V references without external compensation.

FAQ

What is the recommended minimum load current for stable operation of ZRC500F01TC?

The ZRC500F01TC is specified to operate stably from 25 µA to 5 mA. While its knee current is 19 µA typical, Diodes recommends ≥25 µA for guaranteed regulation across temperature and process variation. Operation below 25 µA may result in increased TC or output deviation beyond datasheet limits.

Can ZRC500F01TC drive a 1000 pF capacitive load directly?

Yes - the ZRC500F01TC is explicitly characterized as stable with capacitive loads, including up to 1 nF, without external series resistance or compensation. This capability is confirmed in the datasheet's "Stable with Capacitive Loads" section and validated in typical application circuits.

Is ZRC500F01TC pin-compatible with other SOT23-3 voltage references?

No - ZRC500F01TC uses a nonstandard pinout: Pin 1 is NC (or optionally tied to GND), Pin 2 is GND, and Pin 3 is VR (anode). Most competing SOT23-3 references (e.g., REF3050, TLV431) assign VR to Pin 1 or Pin 3 with different grounding schemes, requiring PCB redesign for substitution.

Does ZRC500F01TC require derating at elevated ambient temperatures?

Yes - maximum power dissipation is 330 mW at T_AMB = 25°C, derating linearly to zero at 150°C junction temperature. At 85°C ambient, allowable dissipation drops to ~220 mW. Users must verify junction temperature using θ_JA = 375°C/W (SOT23) and actual power (V_R × I_R) to avoid thermal runaway.

ZRC500F01TC 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):: 5V

Voltage - Output (Max):: -

Current - Output:: 5 mA

Tolerance:: ±1%

Temperature Coefficient:: 90ppm/°C

Noise - 0.1Hz to 10Hz:: -

Noise - 10Hz to 10kHz:: 105µVrms

Voltage - Input:: -

Current - Supply:: -

Current - Cathode:: 25 µA

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

Grade:: -

Qualification:: -

Mounting Type:: Surface Mount

Supplier Device Package:: SOT-23-3

ZRC500F01TC FAQ

1.How can I place an order for ZRC500F01TC through Aetrix?

Please submit a Request for Quotation (RFQ) for ZRC500F01TC 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 ZRC500F01TC reliable?

The price and inventory of ZRC500F01TC are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZRC500F01TC is usually 5 days.

3.What payment methods are accepted for ZRC500F01TC?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZRC500F01TC transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for ZRC500F01TC?

ZRC500F01TC orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your ZRC500F01TC 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 ZRC500F01TC?

For technical support, including ZRC500F01TC datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZRC500F01TC requirements.

6.How does Aetrix verify that ZRC500F01TC is sourced from the original manufacturer or authorized distributors?

All ZRC500F01TC 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 ZRC500F01TC meets industry standards.

7.What is the process for return or replacement of ZRC500F01TC?

All ZRC500F01TC units undergo pre-shipment inspection (PSI). If there is an issue with ZRC500F01TC, 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 ZRC500F01TC part is unused and in its original packaging.

Return procedure for ZRC500F01TC:

1.Submit a request within 90 days.

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

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