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Renesas HZU18B1TRF-E-Q
- Part No.:
- HZU18B1TRF-E-Q
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZU18B1TRF-E-Q.pdf
- Description:
- DIODE ZENER
- Quantity:
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Inventory:102,000
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Product details
Overview
HZU18B1TRF-E-Q from Renesas Electronics is a silicon epitaxial planar Zener diode optimized for hard-knee, low-noise voltage reference applications. It delivers a nominal Zener voltage of 1.9 V (min) to 2.3 V (max) at 0.5 mA, with dynamic resistance of 350 Ω (max), temperature coefficient of −1.0 mV/°C (typ), and ultra-low noise voltage-approximately 1/3 to 1/10 that of the standard HZU series. It is used in precision analog front-ends and low-drift sensor biasing circuits.
For engineers reviewing the HZU18B1TRF-E-Q datasheet, HZU18B1TRF-E-Q pinout, HZU18B1TRF-E-Q application, or HZU18B1TRF-E-Q equivalent, key selection criteria include its hard-knee Vz–Iz linearity (1 nA to 1 mA), ultra-small URP package (PTSP0002ZA-A), low-temperature-coefficient performance, and suitability for low-noise reference design in space-constrained portable instrumentation.
Technical Context
The HZU18B1TRF-E-Q implements a silicon epitaxial planar junction structure enabling semi-logarithmic linear Zener voltage vs. current behavior across six decades (1 nA to 1 mA). Its hard-knee characteristic minimizes curvature near knee voltage, improving reference stability at microamp-level bias currents.
Designed for low-noise operation, it achieves significantly reduced voltage noise versus legacy HZU-series diodes and exhibits approximately half the temperature coefficient-critical for high-accuracy DC biasing where thermal drift must be minimized without active compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 1.9 V min to 2.3 V max at IZ = 0.5 mA - defines stable reference point for low-voltage analog circuits |
| Dynamic Resistance (ZZT) | 350 Ω max at IZT = 0.5 mA - ensures minimal output impedance variation under load changes |
| Reverse Current (IR) | 100 nA max at VR = 0.5 V - enables ultra-low standby leakage in battery-powered references |
| Temperature Coefficient (γZ) | −1.0 mV/°C typ - reduces thermal drift by ~50% vs. HZU series, easing calibration burden |
| Noise Voltage | Approx. 1/3–1/10 of HZU series - directly lowers RMS noise floor in precision ADC reference paths |
| Power Dissipation (Pd) | 150 mW max at Ta = 25°C - supports continuous operation in compact SMT layouts with limited thermal mass |
Pinout & Package
Package: Ultra Small Resin Package (URP), JEITA code PTSP0002ZA-A, Renesas code SC-76A, mass 0.004 g. Dimensions: 1.10 mm × 0.80 mm × 0.45 mm (L × W × H), 2-terminal surface-mount device.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to higher-potential node; reverse-biased terminal where Zener breakdown occurs |
| 2 | Anode | Connected to lower-potential node (typically ground or common reference); completes bias path |
Key Features
| Feature | Design Value |
|---|---|
| Hard-knee Zener characteristic | Semi-logarithmic VZ–IZ linearity from 1 nA to 1 mA enables stable reference down to nanoamp bias currents |
| Ultra-low noise voltage | Reduces integrated RMS noise in reference chains-critical for 16+ bit SAR and delta-sigma ADCs |
| Reduced temperature coefficient | −1.0 mV/°C typ cuts thermal drift nearly in half vs. HZU series, lowering system-level calibration frequency |
| URP surface-mount package | 1.10 mm × 0.80 mm footprint supports high-density PCB layouts in portable medical and test equipment |
Applications
| Portable Sensor Signal Conditioning | Precision ADC Reference Source |
|---|---|
Use Scenario: Low-power gas sensor module requiring stable 2.0 V bias under varying ambient temperature (−20°C to +70°C). IC Role / Device Role / Timing Role: Zener diode providing low-drift, low-noise voltage reference for op-amp gain-setting and sensor excitation. Use Value: Hard-knee linearity and −1.0 mV/°C γZ maintain <±2 mV reference error over full temperature range without trimming. | Use Scenario: 18-bit delta-sigma ADC in handheld multimeter with battery-only operation. IC Role / Device Role / Timing Role: Primary voltage reference for ADC internal reference buffer and external analog front-end. Use Value: Ultra-low noise (1/10 HZU series) and 100 nA IR at 0.5 V reduce quantization noise floor and extend battery life. |
| Low-Power IoT Node Biasing | Calibration-Grade Instrumentation |
Use Scenario: Sub-μA wake-up circuit in NB-IoT endpoint using Zener-based threshold detector. IC Role / Device Role / Timing Role: Zener diode establishing precise trip voltage for comparator input in energy-harvesting power management. Use Value: Stable VZ down to 1 nA enables reliable detection at nanoamp quiescent current-no additional bias resistor needed. | Use Scenario: Benchtop DMM requiring factory-calibrated 2.0 V reference with <1 ppm/°C drift contribution. IC Role / Device Role / Timing Role: Primary reference element in oven-controlled reference subcircuit (OCXO-assisted). Use Value: Matched low γZ and hard-knee behavior minimize nonlinearity-induced errors during multi-point calibration sweeps. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ON Semiconductor MMBZ5222BS | Zener voltage 2.4 V (nom), ±5% tolerance, 100 Ω ZZT, no specified noise or γZ data | General-purpose regulation; lacks documented low-noise or hard-knee linearity specs | Select when cost-sensitive, non-critical reference stability suffices and tighter VZ tolerance is not required |
| Toshiba UDZS2.0B | Zener voltage 2.0 V (nom), ±5%, 150 Ω ZZT, γZ = −1.2 mV/°C (typ), no noise spec | Low-cost industrial reference; verified γZ but no published noise reduction claim vs. legacy series | Choose for moderate-precision biasing where Renesas' 1/10 noise advantage is unnecessary |
Compared with MMBZ5222BS and UDZS2.0B, the HZU18B1TRF-E-Q provides uniquely documented hard-knee linearity, ultra-low noise, and superior γZ control-making it the only option among the three qualified for sub-10 μVRMS reference noise targets in metrology-grade designs.
Availability
HZU18B1TRF-E-Q is available at Aetrix Electronics and suitable for portable sensor signal conditioning, precision ADC reference sourcing, and low-power IoT node biasing requiring stable component supply, RoHS-compliant packaging, and traceable lot-level documentation.
Supply support for HZU18B1TRF-E-Q 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
Renesas Electronics Corporation is a global semiconductor manufacturer specializing in microcontrollers, analog and power devices, and advanced SoCs for automotive, industrial, and enterprise applications.
The HZU-LL Series was developed specifically for ultra-low-noise, hard-knee Zener reference applications in space-constrained, battery-operated instrumentation-addressing limitations in noise, temperature drift, and low-current linearity found in earlier Zener families.
FAQ
What is the nominal Zener voltage range of the HZU18B1TRF-E-Q?
The HZU18B1TRF-E-Q has a guaranteed Zener voltage range of 1.9 V minimum to 2.3 V maximum, measured at a test current of 0.5 mA. This range reflects the "B" grade within the HZU-LL family and is confirmed per Renesas datasheet REJ03G1216-0500 Rev.5.00. The HZU18B1TRF-E-Q is designed for applications needing tight, low-voltage reference stability without external trimming.
Does the HZU18B1TRF-E-Q support operation below 1 µA?
Yes-the HZU18B1TRF-E-Q exhibits semi-logarithmic linear VZ–IZ characteristics from 1 nA up to 1 mA, enabling stable reference behavior even at nanoamp bias currents. This hard-knee behavior is explicitly documented in the datasheet and distinguishes the HZU18B1TRF-E-Q from conventional Zeners that degrade below 10 µA. The HZU18B1TRF-E-Q maintains usable regulation well into the sub-microamp region.
What is the temperature coefficient of the HZU18B1TRF-E-Q, and how does it compare to the standard HZU series?
The HZU18B1TRF-E-Q has a typical temperature coefficient (γZ) of −1.0 mV/°C, approximately half that of the standard HZU series. This value is measured and specified in the Renesas datasheet REJ03G1216-0500. The reduced drift directly improves long-term reference accuracy in unregulated environments-making the HZU18B1TRF-E-Q especially valuable in handheld test equipment where ambient temperature varies widely.
Is the HZU18B1TRF-E-Q suitable for low-noise precision reference applications?
Yes-the HZU18B1TRF-E-Q is explicitly characterized for low-noise operation, with voltage noise approximately 1/3 to 1/10 that of the standard HZU series. This performance is achieved through epitaxial planar process optimization and is validated in Renesas' characterization data. For precision reference applications such as 16+ bit ADCs or sensor excitation, the HZU18B1TRF-E-Q delivers measurably lower RMS noise than generic Zener diodes.
What package type and dimensions does the HZU18B1TRF-E-Q use?
The HZU18B1TRF-E-Q uses the Ultra Small Resin Package (URP), JEITA code PTSP0002ZA-A, also known as SC-76A. Its dimensions are 1.10 mm (length) × 0.80 mm (width) × 0.45 mm (height), with a mass of 0.004 g. The 2-pin surface-mount configuration and cathode-marked orientation are fully documented in the Renesas mechanical drawings. This package enables high-density placement in portable and wearable electronics.
HZU18B1TRF-E-Q Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- -
- Tolerance:
- -
- Power - Max:
- -
- Impedance (Max) (Zzt):
- -
- Current - Reverse Leakage @ Vr:
- -
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- -
HZU18B1TRF-E-Q FAQ
1.How can I place an order for HZU18B1TRF-E-Q through Aetrix?
Please submit a Request for Quotation (RFQ) for HZU18B1TRF-E-Q 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 HZU18B1TRF-E-Q reliable?
The price and inventory of HZU18B1TRF-E-Q are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZU18B1TRF-E-Q is usually 5 days.
3.What payment methods are accepted for HZU18B1TRF-E-Q?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZU18B1TRF-E-Q transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZU18B1TRF-E-Q?
HZU18B1TRF-E-Q orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZU18B1TRF-E-Q 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 HZU18B1TRF-E-Q?
For technical support, including HZU18B1TRF-E-Q datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZU18B1TRF-E-Q requirements.
6.How does Aetrix verify that HZU18B1TRF-E-Q is sourced from the original manufacturer or authorized distributors?
All HZU18B1TRF-E-Q 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 HZU18B1TRF-E-Q meets industry standards.
7.What is the process for return or replacement of HZU18B1TRF-E-Q?
All HZU18B1TRF-E-Q units undergo pre-shipment inspection (PSI). If there is an issue with HZU18B1TRF-E-Q, 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 HZU18B1TRF-E-Q part is unused and in its original packaging.
Return procedure for HZU18B1TRF-E-Q:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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