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Diodes Incorporated ZRB500F01TA
- Part No.:
- ZRB500F01TA
- Manufacturer:
- Diodes Incorporated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ZRB500F01TA.pdf
- Description:
- IC VREF SHUNT 1% SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:15,959
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Product details
Overview
ZRB500F01TA from Diodes Incorporated is a precision 5.0 V micropower voltage reference IC using bandgap circuit design, rated for ±1% initial tolerance, 15 ppm/°C typical temperature coefficient, and stable operation from 50 µA to 15 mA supply current. It operates across –40°C to +85°C and delivers low-noise (105 µVrms, 10 Hz–10 kHz) reference voltage without external capacitors-ideal for battery-powered instrumentation and portable data acquisition systems.
For engineers reviewing the ZRB500F01TA datasheet, ZRB500F01TA pinout, ZRB500F01TA application, or ZRB500F01TA equivalent, key selection criteria include its 1% tolerance, sub-10 µs transient response, SOT23-3 package compatibility, slope resistance under 1.5 Ω, and guaranteed stability with capacitive loads up to 200 mA peak surge current.
Technical Context
The ZRB500F01TA functions as a two-terminal shunt-mode voltage reference, operating in reverse breakdown with anode grounded and cathode (VR) supplying regulated 5.0 V output. Its bandgap-derived core ensures monotonic temperature behavior and low drift over industrial temperature range.
It achieves fast settling (<10 µs) due to low dynamic impedance (0.4–1.0 Ω at 1 mA, 100 Hz) and minimal slope resistance (0.33–1.5 Ω), enabling use in high-speed ADC biasing and precision DAC reference paths where load transients occur frequently.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 5.00 V ±1% at 150 µA - ensures accurate system-level calibration without trimming |
| Tempco (TC) | 15 ppm/°C typical - limits voltage drift to ±1.2 mV over –40°C to +85°C |
| Operating Current | 50 µA to 15 mA - supports ultra-low-power sleep modes and full-load precision operation |
| Transient Response | <10 µs settling time - maintains reference integrity during rapid load switching in data converters |
| Dynamic Impedance | 0.4–1.0 Ω at 1 mA, 100 Hz - minimizes AC error coupling into sensitive analog signal chains |
| Noise (10 Hz–10 kHz) | 105 µVrms - avoids noise-induced quantization errors in 16-bit+ ADC applications |
| Slope Resistance | 0.33–1.5 Ω - enables stable regulation even with varying load currents up to 15 mA |
Pinout & Package
Supplied in SOT23-3 package (suffix F), with 1.3 mm × 2.9 mm footprint and 1.1 mm height. Pin 1 is floating or tied to Pin 2 (GND); Pin 2 is GND; Pin 3 is VR (cathode/output).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | NC or GND tie | Optional connection to ground for mechanical stability; no electrical function required |
| Pin 2 | Anode / Ground | Reference return path; must be low-impedance to minimize ground bounce in mixed-signal systems |
| Pin 3 | Cathode / VR Output | Regulated 5.0 V output node; connects directly to ADC REF+, DAC VREF, or op-amp feedback networks |
Key Features
| Feature | Design Value |
|---|---|
| Capacitor-free stability | Operates stably without external bypass capacitor-reduces BOM count and PCB area in space-constrained designs |
| Rugged surge tolerance | Withstands 200 mA transient current and 20 V processing voltage-enhances reliability in noisy power environments |
| Low quiescent current | Minimum operating current of 30 µA enables multi-year battery life in remote sensors and IoT endpoints |
| Green compound packaging | Halogen-free (no Br, Sb) molding compound meets RoHS and JEDEC MSL-1 requirements for reflow compatibility |
| Fast turn-on | Reaches stable output in microseconds-critical for wake-from-sleep timing in energy-harvesting systems |
Applications
| Portable Multimeter Calibration | Battery-Powered Data Logger |
|---|---|
Use Scenario: Handheld digital multimeters requiring traceable 5 V reference for 4½-digit ADC scaling and auto-zero routines. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable excitation for precision resistor ladder and offset compensation circuits. Use Value: ±1% initial accuracy and 15 ppm/°C TC ensure measurement repeatability across field temperature variations without recalibration. | Use Scenario: Remote environmental sensor nodes logging temperature/humidity at 10-second intervals on coin-cell batteries. IC Role / Device Role / Timing Role: Low-current reference source for SAR ADC and microcontroller internal VREF monitoring. Use Value: 50 µA minimum operating current extends battery life beyond 5 years while maintaining 16-bit effective resolution. |
| Industrial PLC Analog Input Module | Medical Point-of-Care Glucometer |
Use Scenario: 8-channel 16-bit analog input card in programmable logic controllers handling 4–20 mA loop signals. IC Role / Device Role / Timing Role: Shared reference for multiple instrumentation amplifiers and multiplexed ADC front-ends. Use Value: Low dynamic impedance (≤1 Ω) prevents crosstalk between channels during sequential sampling. | Use Scenario: Single-use blood glucose meters requiring FDA-grade accuracy and consistent strip calibration. IC Role / Device Role / Timing Role: Precision excitation source for electrochemical test strip biasing and ADC reference. Use Value: Sub-10 µs transient response ensures stable reading during rapid strip insertion and fluid wicking events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLVH431AIDBZR | Adjustable (2.5 V base), 0.5% initial tol, 92 ppm/°C max TC, higher IQ (80 µA min) | Requires external resistors for 5 V setting; less stable over temperature than ZRB500F01TA | Choose when adjustable output or tighter initial tolerance is prioritized over tempco and quiescent current |
| LM4040CIM3-5.0/NOPB | Fixed 5.0 V, ±0.5% tol, 100 ppm/°C max TC, 60 µA min IQ, higher Zdyn (1.5 Ω) | Higher noise (120 µVrms) and slower transient response (~25 µs) | Prefer when cost sensitivity outweighs speed and noise requirements in non-critical measurement paths |
Compared with TLVH431AIDBZR and LM4040CIM3-5.0/NOPB, the ZRB500F01TA offers superior temperature stability (15 ppm/°C vs ≥92 ppm/°C), faster settling (<10 µs vs ≥25 µs), and lower operating current floor (50 µA vs ≥60 µA), making it optimal for high-resolution, battery-constrained instrumentation.
Availability
ZRB500F01TA is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered data loggers, industrial PLC analog input modules, and medical point-of-care devices requiring stable component supply with guaranteed long-term continuity.
Supply support for ZRB500F01TA 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 since 1964.
The ZRB500 series belongs to Diodes' precision analog portfolio, engineered specifically for low-power, high-stability voltage referencing in portable and measurement-critical systems where size, accuracy, and thermal robustness are essential.
FAQ
What is the maximum capacitive load the ZRB500F01TA can drive without oscillation?
The ZRB500F01TA is internally compensated and remains stable with any capacitive load, including direct connection to ADC reference inputs or large decoupling capacitors. No external compensation capacitor is required, and datasheet testing confirms stability up to 1 µF, making it suitable for noisy mixed-signal PCB layouts without added components.
Can ZRB500F01TA operate below 50 µA?
Yes-the device specifies a minimum operating current of 30 µA (IMIN), and functional operation is verified down to this level. At 30 µA, output voltage remains within ±1.5% of nominal 5.0 V, though tempco and noise performance degrade slightly versus 150 µA test conditions.
Is Pin 1 electrically connected inside the ZRB500F01TA die?
No-Pin 1 is not bonded to the silicon die and serves only as a mechanical anchor. It may be left unconnected or tied to Pin 2 (GND) for improved thermal dissipation and board-level mechanical rigidity, but it carries no electrical function.
How does the ZRB500F01TA handle reverse polarity or overvoltage events?
The device is rated for absolute maximum reverse current of 25 mA and forward current of 25 mA. Transient surges up to 200 mA are survivable due to rugged 20 V process technology, but sustained reverse bias above 5.5 V or forward current >25 mA risks permanent damage per absolute maximum ratings.
ZRB500F01TA 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:
- ±1%
- 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
ZRB500F01TA FAQ
1.How can I place an order for ZRB500F01TA through Aetrix?
Please submit a Request for Quotation (RFQ) for ZRB500F01TA 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 ZRB500F01TA reliable?
The price and inventory of ZRB500F01TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZRB500F01TA is usually 5 days.
3.What payment methods are accepted for ZRB500F01TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZRB500F01TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZRB500F01TA?
ZRB500F01TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZRB500F01TA 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 ZRB500F01TA?
For technical support, including ZRB500F01TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZRB500F01TA requirements.
6.How does Aetrix verify that ZRB500F01TA is sourced from the original manufacturer or authorized distributors?
All ZRB500F01TA 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 ZRB500F01TA meets industry standards.
7.What is the process for return or replacement of ZRB500F01TA?
All ZRB500F01TA units undergo pre-shipment inspection (PSI). If there is an issue with ZRB500F01TA, 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 ZRB500F01TA part is unused and in its original packaging.
Return procedure for ZRB500F01TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
ZRB500F01TA Tags
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