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Diodes Incorporated ZRC330QF02TA
- Part No.:
- ZRC330QF02TA
- Manufacturer:
- Diodes Incorporated
- Category:
- Voltage Reference
- Package:
- TO-236-3, SC-59, SOT-23-3
- Datasheet:
-
ZRC330QF02TA.pdf
- Description:
- IC VREF SHUNT 2% SOT23
- Quantity:
- Payment:
- Shipping:
Inventory:4,515
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Product details
Overview
ZRC330QF02TA from Diodes Incorporated is an AEC-Q100 Grade 1 automotive-compliant bandgap voltage reference delivering a nominal 3.3 V output with ±2% initial tolerance at +25°C, 15 µA typical knee current, and 0.6 Ω typical slope resistance. It operates stably from 20 µA to 5 mA without external capacitors and supports automotive instrumentation, data acquisition, and precision power supply applications.
For engineers reviewing the ZRC330QF02TA datasheet, ZRC330QF02TA pinout, ZRC330QF02TA application, or ZRC330QF02TA equivalent, key selection criteria include low-knee-current operation, capacitor-free stability, AEC-Q100 qualification, temperature coefficient (15–50 ppm/°C), and SOT23-3 package compatibility in space-constrained automotive designs.
Technical Context
The ZRC330QF02TA implements a bandgap-based reference architecture optimized for low-power automotive environments, achieving stable regulation across –40°C to +125°C without external compensation. Its internal design enables microsecond-scale turn-on and maintains <1.2 Ω dynamic impedance at 1 mA.
It functions as a two-terminal shunt reference: VR pin sources current into the load while sinking reverse current through GND, with Pin 1 floating or tied to GND per layout guidance. Absolute maximum ratings include 200 mA transient withstand capability and 20 V processing voltage.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Reference Voltage | 3.3 V nominal, ±2% tolerance at +25°C - ensures predictable biasing in automotive sensor signal chains |
| Knee Current | 15 µA typical - enables reliable start-up and regulation in ultra-low-power wake-up circuits |
| Slope Resistance | 0.6 Ω typical - minimizes output voltage shift under varying load currents |
| Temp Coefficient | 15–50 ppm/°C - supports stable reference performance across full automotive temperature range |
| Operating Current | 20 µA to 5 mA - compatible with both battery-backed and high-accuracy active circuits |
| ESD Rating | HBM 4 kV, CDM 1 kV - meets automotive board-level ESD robustness requirements |
| Qualification | AEC-Q100 Grade 1 - validated for under-hood operation up to +125°C ambient |
Pinout & Package
Supplied in SOT23-3 package (JEDEC TO-236AB), 2.9 mm × 1.3 mm × 1.0 mm body, with gull-wing leads and standard thermal pad layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | NC / Optional GND tie | Not internally connected; may be left floating or shorted to Pin 2 for mechanical stability per datasheet guidance |
| Pin 2 | GND | Reference ground return path; must be low-impedance connection to system ground plane |
| Pin 3 | VR | Shunt reference output terminal; sinks current to maintain 3.3 V across external load resistor |
Key Features
| Feature | Design Value |
|---|---|
| No external capacitor required | Enables direct integration into compact PCB layouts without stability-compromising bypass components |
| Low 15 µA knee current | Allows functional regulation in always-on vehicle modules drawing sub-20 µA quiescent current |
| Stable with capacitive loads | Supports direct connection to ADC input caps or LDO feedback networks without oscillation risk |
| 200 mA transient withstand | Survives load dump and jump-start events common in 12 V automotive electrical systems |
| Microsecond turn-on time | Meets fast-wake timing requirements for CAN/LIN transceivers and microcontroller brown-out recovery |
Applications
| Automotive Instrument Clusters | Engine Control Unit Sensors |
|---|---|
Use Scenario: Reference voltage for analog-to-digital conversion of speedometer, tachometer, and fuel gauge signals. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 3.3 V bias for 12-bit SAR ADC front-end. Use Value: ±2% tolerance and 50 ppm/°C TC ensure consistent display accuracy across –40°C to +85°C cabin temperatures. | Use Scenario: Calibration reference for oxygen (O₂) and manifold absolute pressure (MAP) sensor signal conditioning. IC Role / Device Role / Timing Role: Precision shunt reference supplying excitation and scaling for op-amp-based sensor interfaces. Use Value: 0.6 Ω slope resistance minimizes error contribution during sensor self-test current injection sequences. |
| ADAS Camera Power Rails | Infotainment System Audio DACs |
Use Scenario: Reference source for image sensor power management ICs requiring tight rail regulation. IC Role / Device Role / Timing Role: Low-noise (75 µVrms) shunt reference stabilizing 3.3 V domain for CMOS image sensor biasing. Use Value: Capacitor-free operation avoids EMI coupling paths near high-speed MIPI CSI-2 traces. | Use Scenario: Voltage reference for stereo audio DACs in head unit amplifiers. IC Role / Device Role / Timing Role: Stable 3.3 V reference for digital-to-analog conversion in Class D amplifier feedback loops. Use Value: 15 µA knee current enables low-power audio standby mode without reference dropout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar shunt voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431ACDBVR | 2.5 V fixed reference, adjustable via resistive divider; 0.2 Ω typical cathode impedance | Requires external resistors to set 3.3 V; higher minimum cathode current (1 mA) | Preferred where programmability or tighter initial tolerance (±0.5%) is required, but adds BOM and layout complexity |
| MAX6033AESA+ | 3.3 V series reference; 35 ppm/°C TC; 75 µA quiescent current | Three-terminal series topology; requires input decoupling capacitor; not shunt-compatible | Used when low-output-impedance sourcing is needed, but incompatible with existing shunt-based PCB footprints |
Compared with TL431ACDBVR and MAX6033AESA+, the ZRC330QF02TA offers drop-in SOT23-3 shunt replacement with lower knee current, no external components, and AEC-Q100 Grade 1 qualification-making it optimal for cost-sensitive, space-constrained automotive shunt reference designs.
Availability
ZRC330QF02TA is available at Aetrix Electronics and suitable for automotive instrumentation, engine control units, and ADAS camera modules requiring stable component supply with PPAP documentation support.
Supply support for ZRC330QF02TA 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-reliability solutions for automotive, industrial, and computing markets.
The ZRC330Q series belongs to Diodes' automotive-qualified voltage reference product line, engineered specifically for AEC-Q100-compliant shunt reference applications demanding low knee current, capacitor-free stability, and extended temperature operation.
FAQ
Can ZRC330QF02TA operate without an external capacitor?
Yes. The ZRC330QF02TA is designed as a capacitor-free shunt reference and remains stable with or without external capacitance on the VR pin. This eliminates board space and cost associated with bypass capacitors while maintaining regulation across its full operating current range (20 µA to 5 mA).
What is the significance of the "Q" suffix in ZRC330QF02TA?
The "Q" denotes AEC-Q100 qualification. ZRC330QF02TA is fully qualified to AEC-Q100 Grade 1 standards, meaning it has undergone stress testing for automotive use including temperature cycling, HTOL, and ESD, and supports PPAP documentation for Tier 1 automotive suppliers.
How does the knee current affect circuit design?
The 15 µA typical knee current defines the minimum reverse current at which the device begins regulating. Designers must ensure the external bias network delivers ≥20 µA (recommended minimum) across all temperatures and tolerances to guarantee stable 3.3 V output-critical for battery-powered modules in sleep mode.
Is Pin 1 electrically connected inside the device?
No. Pin 1 is not internally connected (NC). The datasheet explicitly states it should be left floating or tied to Pin 2 (GND) for mechanical reinforcement only. Connecting Pin 1 to any other node may compromise thermal or electrical performance and is not recommended.
ZRC330QF02TA 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):
- 3.3V
- Voltage - Output (Max):
- -
- Current - Output:
- 5 mA
- Tolerance:
- ±2%
- Temperature Coefficient:
- 50ppm/°C
- Noise - 0.1Hz to 10Hz:
- -
- Noise - 10Hz to 10kHz:
- 75µVrms
- Voltage - Input:
- -
- Current - Supply:
- -
- Current - Cathode:
- 20 µA
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- Automotive
- Qualification:
- AEC-Q100
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-3
ZRC330QF02TA FAQ
1.How can I place an order for ZRC330QF02TA through Aetrix?
Please submit a Request for Quotation (RFQ) for ZRC330QF02TA 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 ZRC330QF02TA reliable?
The price and inventory of ZRC330QF02TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ZRC330QF02TA is usually 5 days.
3.What payment methods are accepted for ZRC330QF02TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ZRC330QF02TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ZRC330QF02TA?
ZRC330QF02TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ZRC330QF02TA 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 ZRC330QF02TA?
For technical support, including ZRC330QF02TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ZRC330QF02TA requirements.
6.How does Aetrix verify that ZRC330QF02TA is sourced from the original manufacturer or authorized distributors?
All ZRC330QF02TA 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 ZRC330QF02TA meets industry standards.
7.What is the process for return or replacement of ZRC330QF02TA?
All ZRC330QF02TA units undergo pre-shipment inspection (PSI). If there is an issue with ZRC330QF02TA, 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 ZRC330QF02TA part is unused and in its original packaging.
Return procedure for ZRC330QF02TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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