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Diodes Incorporated ZRB500F02TA
- Part No.:
- ZRB500F02TA
- Manufacturer:
- Diodes Incorporated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ZRB500F02TA.pdf
- Description:
- IC VREF SHUNT 2% SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:26,152
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Product details
Overview
ZRB500F02TA from Diodes Incorporated is a precision 5.0 V micropower voltage reference IC using bandgap circuit design, rated for ±2% initial tolerance, 15 ppm/°C typical temperature coefficient, and stable operation from 50 µA to 15 mA supply current. It delivers low-noise (105 µVrms, 10 Hz–10 kHz), fast transient response (<10 µs), and operates across –40°C to +85°C in battery-powered instrumentation and data acquisition systems.
For engineers reviewing the ZRB500F02TA datasheet, ZRB500F02TA pinout, ZRB500F02TA application, or ZRB500F02TA equivalent, key selection criteria include initial voltage accuracy, TC performance, load regulation stability without external capacitor, and SOT23-3 package compatibility with space-constrained PCB layouts.
Technical Context
The ZRB500F02TA functions as a two-terminal shunt-mode voltage reference, operating in reverse breakdown with GND as the cathode and VR as the anode. Its bandgap-derived core ensures monotonic temperature behavior and minimal curvature error over –40°C to +85°C.
It achieves stability with capacitive loads up to 10 nF and requires no external compensation capacitor. Slope resistance is 0.33 Ω (typ) at 1 mA, enabling tight regulation under dynamic load steps while maintaining <10 µs settling time for single-pulse transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 5.0 V ±2% (guaranteed initial accuracy at 150 µA, supports precise ADC/DAC biasing) |
| Tempco (TC) | 15 ppm/°C typ (ensures ≤±1.2 mV drift over full –40°C to +85°C range) |
| Operating Current | 50 µA to 15 mA (enables ultra-low-power sensor nodes and high-current precision supplies) |
| Slope Resistance | 0.33 Ω typ (minimizes output voltage shift under load changes; critical for stable feedback loops) |
| Transient Response | <10 µs (supports rapid power-up sequencing and burst-mode measurement systems) |
| Wideband Noise | 105 µVrms (10 Hz–10 kHz; suitable for 16-bit+ data acquisition without added filtering) |
| Package | SOT23-3 (2.9 mm × 1.3 mm footprint; compatible with standard pick-and-place and reflow processes) |
Pinout & Package
SOT23-3 package (suffix F), 2.9 mm × 1.3 mm body, 0.95 mm height, gull-wing leads. RoHS-compliant, green molding compound (Br/Sb-free).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Anode (VR) | Reference output node; connects to load or feedback network; reverse-biased during operation |
| 2 | Cathode (GND) | Ground return path; must be low-impedance; referenced to system ground plane |
| 3 | NC / Floating | No internal connection; may be left unconnected or tied to Pin 2 per layout best practice |
Key Features
| Feature | Design Value |
|---|---|
| Capacitor-free stability | Operates stably with no external bypass capacitor-reduces BOM count and board area in portable designs |
| Low quiescent current | 30 µA minimum operating current enables multi-year battery life in remote sensors |
| Rugged transient handling | Withstands 200 mA surge currents and 20 V processing voltage-survives ESD and line transients |
| Industrial temperature range | Specified from –40°C to +85°C-validates use in outdoor metering and factory-floor instrumentation |
Applications
| Portable Multimeters | Battery Management Systems |
|---|---|
Use Scenario: Handheld digital multimeters requiring stable 5 V reference for 4½-digit ADC conversion across varying battery voltage and ambient temperature. IC Role / Device Role / Timing Role: Shunt voltage reference providing excitation and scaling reference for dual-slope or sigma-delta ADC front-end. Use Value: ±2% initial tolerance and 15 ppm/°C TC ensure measurement accuracy remains within Class II specification without calibration drift. | Use Scenario: Cell voltage monitoring in 3S–4S Li-ion packs where reference stability directly impacts state-of-charge estimation fidelity. IC Role / Device Role / Timing Role: Precision reference for analog front-end multiplexers and 12-bit SAR ADCs sampling individual cell voltages. Use Value: Low 105 µVrms noise prevents quantization errors; <10 µs transient response accommodates fast cell switching. |
| Programmable Logic Controllers | Industrial Data Loggers |
Use Scenario: Analog input modules in PLCs needing calibrated 0–5 V or 4–20 mA signal conditioning with long-term repeatability. IC Role / Device Role / Timing Role: Reference source for programmable gain instrumentation amplifiers and DAC-based output drivers. Use Value: Stable slope resistance (0.33 Ω) maintains linearity across 50 µA–15 mA load variations typical in modular I/O designs. | Use Scenario: Remote environmental loggers powered by solar-charged batteries, operating unattended for months in variable thermal environments. IC Role / Device Role / Timing Role: Primary voltage reference for microcontroller ADC, real-time clock VDD monitor, and EEPROM write-voltage supervisor. Use Value: Micropower operation (50 µA min) extends runtime; industrial temp range ensures reliability at –40°C cold starts and +85°C enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431AIDBZR | 2.5 V nominal, adjustable via resistive divider; 2% initial tol; 50 ppm/°C TC; higher 100 µA min current | Requires external resistors to set 5 V; less stable over temperature than ZRB500F02TA | Choose when flexibility in reference voltage is needed and board space allows resistor network |
| REF5050AIDR | 5.0 V, 0.05% initial tol, 3 ppm/°C TC, 10 µA max quiescent current, SOIC-8 package | Higher precision and lower drift but larger footprint and higher cost; not micropower-optimized | Choose for metrology-grade systems where 0.05% accuracy outweighs size and current constraints |
Compared with TL431AIDBZR and REF5050AIDR, the ZRB500F02TA uniquely balances ±2% accuracy, 15 ppm/°C TC, sub-10 µs response, and SOT23-3 form factor-making it optimal for compact, battery-sensitive industrial measurement nodes where moderate precision suffices.
Availability
ZRB500F02TA is available at Aetrix Electronics and suitable for portable instrumentation, battery management systems, and industrial data loggers requiring stable component supply with consistent parametric performance across production batches.
Supply support for ZRB500F02TA 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 integrated circuits, specializing in high-performance, high-reliability components for power management, signal integrity, and protection applications.
The ZRB500 series belongs to Diodes' precision analog portfolio, designed specifically for space-constrained, low-power measurement and control systems requiring stable, low-drift voltage references without external compensation.
FAQ
What is the recommended minimum operating current for ZRB500F02TA?
The datasheet specifies a minimum operating current of 30 µA, though stable regulation is guaranteed from 50 µA. Below 50 µA, voltage accuracy degrades gradually due to increased TC contribution and reduced PSRR; for production designs, 50 µA is the validated lower limit for full spec compliance.
Can ZRB500F02TA drive a 10 nF capacitive load without oscillation?
Yes-the device is explicitly characterized for stability with capacitive loads up to 10 nF and requires no external series resistor or capacitor. This capability is verified across –40°C to +85°C and enables direct connection to ADC sample-and-hold inputs or op-amp non-inverting inputs without phase-margin concerns.
Is Pin 3 internally connected in the SOT23-3 package?
No-Pin 3 is unconnected (NC) and has no internal bond wire. The datasheet states it may be left floating or tied to Pin 2 (GND) for mechanical reinforcement or EMI reduction; neither configuration affects electrical performance, but grounding improves thermal dissipation marginally.
How does ZRB500F02TA behave under transient overcurrent conditions?
The device withstands pulsed currents up to 200 mA and absolute maximum continuous forward current of 25 mA. Transient testing shows full recovery within 10 µs after 100 mA, 1 µs pulses. This ruggedness stems from 20 V process technology and on-die thermal limiting-not intended for sustained overload, but sufficient for ESD and inrush events.
ZRB500F02TA 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):
- 5V
- Voltage - Output (Max):
- -
- Current - Output:
- 15 mA
- Tolerance:
- ±2%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 105µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 50 µA
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
ZRB500F02TA FAQ
1.How can I place an order for ZRB500F02TA through Aetrix?
Please submit a Request for Quotation (RFQ) for ZRB500F02TA 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 ZRB500F02TA reliable?
The price and inventory of ZRB500F02TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZRB500F02TA is usually 5 days.
3.What payment methods are accepted for ZRB500F02TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZRB500F02TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZRB500F02TA?
ZRB500F02TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZRB500F02TA 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 ZRB500F02TA?
For technical support, including ZRB500F02TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZRB500F02TA requirements.
6.How does Aetrix verify that ZRB500F02TA is sourced from the original manufacturer or authorized distributors?
All ZRB500F02TA 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 ZRB500F02TA meets industry standards.
7.What is the process for return or replacement of ZRB500F02TA?
All ZRB500F02TA units undergo pre-shipment inspection (PSI). If there is an issue with ZRB500F02TA, 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 ZRB500F02TA part is unused and in its original packaging.
Return procedure for ZRB500F02TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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