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Renesas HZU12B1TRF-E-Q
- Part No.:
- HZU12B1TRF-E-Q
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZU12B1TRF-E-Q.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
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Inventory:66,000
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Product details
Overview
HZU12B1TRF-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 12 V at 0.5 mA, with dynamic resistance of 380 Ω (typ), temperature coefficient of −1.5 mV/°C, 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 reference circuits.
For engineers reviewing the HZU12B1TRF-E-Q datasheet, HZU12B1TRF-E-Q pinout, HZU12B1TRF-E-Q application, or HZU12B1TRF-E-Q equivalent, key selection criteria include its semi-logarithmic VZ–IZ linearity from 1 nA to 1 mA, ultra-small URP package footprint, and verified low-temperature-coefficient performance across industrial ambient ranges.
Technical Context
The HZU12B1TRF-E-Q belongs to the HZU-LL Series, engineered specifically for hard-knee Zener behavior and minimized noise generation. Its Zener voltage exhibits semi-logarithmic linearity over six decades of reverse current (1 nA to 1 mA), enabling stable operation in ultra-low-current biasing schemes.
It achieves a temperature coefficient of −1.5 mV/°C (≈ −0.0125 %/°C at 12 V), roughly half that of legacy HZU-series diodes, and maintains dynamic impedance below 400 Ω at IZT = 0.5 mA-critical for high-PSRR reference buffering and noise-sensitive instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 11.4 V min / 12.6 V max at IZ = 0.5 mA - ensures tight 12 V nominal regulation with ±5% tolerance for precision references. |
| Dynamic Resistance (ZZT) | 380 Ω typ at IZT = 0.5 mA - limits output impedance drift under load variation, supporting stable feedback in op-amp reference buffers. |
| Temperature Coefficient (γZ) | −1.5 mV/°C - reduces thermal drift by ~50% vs. standard HZU, improving long-term stability in unregulated environments. |
| Reverse Current (IR) | 100 nA max at VR = 9.0 V - enables low-leakage bias networks and preserves accuracy in high-impedance sensing nodes. |
| Power Dissipation (Pd) | 150 mW max at Ta = 25°C - defines safe DC operating envelope; derates linearly above 25°C per Fig.3. |
| Junction Temperature (Tj) | 150°C max - supports reliable operation in sealed enclosures or thermally constrained PCB layouts. |
Pinout & Package
Package: Ultra Small Resin Package (URP), JEITA code PTSP0002ZA-A, Renesas code SC-76A, mass ≈ 0.004 g. Surface-mount compatible with 0.8 mm × 1.25 mm footprint and 0.45 mm height.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; polarity mark on package surface identifies this terminal. |
| 2 | Anode | Connected to ground or current-source bias; reverse-biased configuration establishes Zener breakdown. |
Key Features
| Feature | Design Value |
|---|---|
| Hard-knee Zener characteristic | Sharp, well-defined breakdown onset with minimal knee curvature-enables accurate low-current regulation without extrapolation. |
| Ultra-low noise voltage | 1/3–1/10 lower than standard HZU series-reduces RMS noise contribution in sub-µV-level signal chains (e.g., strain gauge amplifiers). |
| Semi-logarithmic VZ–IZ linearity | Linear over 1 nA–1 mA range-supports stable biasing from nanoampere standby to milliampere active modes without gain discontinuity. |
| Low temperature coefficient | −1.5 mV/°C (≈ −0.0125 %/°C)-halves thermal drift versus HZU, easing compensation in wide-temperature industrial designs. |
Applications
| High-Precision ADC Reference | Low-Noise Instrumentation Amplifier Bias |
|---|---|
Use Scenario: Providing stable 12 V reference for 24-bit sigma-delta ADCs in weigh-scale transducer interfaces. IC Role / Device Role / Timing Role: Zener diode functions as primary voltage reference source, directly feeding ADC reference input and op-amp bias networks. Use Value: Low dynamic resistance (380 Ω) minimizes reference droop under switching load currents; ultra-low noise prevents SNR degradation in <1 µVpp input ranges. | Use Scenario: Setting precise bias points for dual-supply instrumentation amplifiers in medical ECG front-ends. IC Role / Device Role / Timing Role: Zener diode supplies clean, low-drift common-mode voltage to amplifier input stage via high-impedance divider. Use Value: Semi-log linearity ensures consistent bias across sleep/wake current transitions (1 nA ↔ 100 µA); −1.5 mV/°C TC avoids baseline wander during body-temperature shifts. |
| Programmable Current Source Setpoint | Calibration-Grade Voltage Standard |
Use Scenario: Defining reference voltage for DAC-controlled current sources in automated test equipment (ATE) channel calibration. IC Role / Device Role / Timing Role: Zener diode anchors feedback loop of op-amp-based Howland current source, fixing compliance voltage. Use Value: Tight VZ tolerance (±5%) and low IR (≤100 nA) ensure setpoint accuracy remains within 0.02% over 10-year field deployment. | Use Scenario: Serving as traceable 12 V standard in metrology-grade benchtop calibrators and reference labs. IC Role / Device Role / Timing Role: Zener diode operates in constant-current mode with guarded layout to minimize leakage and thermal EMF errors. Use Value: Verified hard-knee behavior and low TC enable repeatable 12 V output with <10 ppm/°C drift-meeting ISO/IEC 17025 calibration chain requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL431ACDBVR | Adjustable shunt regulator (2.5 V ref + external resistors); higher quiescent current (70 µA min); not a true Zener. | Requires external resistor network; unsuitable for ultra-low-current (<100 nA) or noise-critical roles. | Choose when programmability and tighter initial tolerance (0.5%) outweigh noise and leakage penalties. |
| BZX84-C12LT1G | Standard SOT-23 Zener; VZ = 12 V ±5%, but γZ ≈ −2.5 mV/°C and ZZT ≈ 500 Ω - higher drift and impedance. | Lacks hard-knee linearity and low-noise optimization; acceptable only in non-critical power-rail clamping. | Choose only for cost-sensitive, non-precision applications where thermal stability and noise are secondary. |
Compared with TL431ACDBVR and BZX84-C12LT1G, the HZU12B1TRF-E-Q uniquely combines hard-knee Zener behavior, sub-100 nA leakage, and −1.5 mV/°C TC-making it irreplaceable in metrology-grade references and ultra-low-power sensor biasing where noise and drift dominate error budgets.
Availability
HZU12B1TRF-E-Q is available at Aetrix Electronics and suitable for high-precision ADC reference design, low-noise instrumentation amplifier biasing, and calibration-grade voltage standard applications requiring stable component supply and guaranteed long-term parametric consistency.
Supply support for HZU12B1TRF-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 leader delivering microcontrollers, analog power, and advanced SoC solutions for industrial, automotive, and infrastructure markets.
The HZU-LL Series was developed specifically for ultra-stable, low-noise Zener voltage references in metrology, precision sensing, and calibration equipment-prioritizing hard-knee behavior, wide-current-linearity, and minimized thermal drift.
FAQ
What is the Zener voltage tolerance of the HZU12B1TRF-E-Q at 0.5 mA?
The HZU12B1TRF-E-Q has a Zener voltage range of 11.4 V (min) to 12.6 V (max) at IZ = 0.5 mA, corresponding to a ±5% tolerance around the nominal 12 V rating. This is confirmed in the Electrical Characteristics table on page 2 of the REJ03G1216-0500 datasheet. The HZU12B1TRF-E-Q maintains this specification across its qualified operating temperature range.
Does the HZU12B1TRF-E-Q support operation below 1 µA reverse current?
Yes-the HZU12B1TRF-E-Q exhibits semi-logarithmic VZ–IZ linearity down to 1 nA, as explicitly stated in the Features section of the datasheet. This enables stable regulation in ultra-low-power standby modes, energy-harvesting circuits, and nanoscale sensor biasing where current budgets are sub-microampere. The HZU12B1TRF-E-Q's hard-knee behavior remains intact across this full range.
What is the maximum junction temperature rating for the HZU12B1TRF-E-Q?
The absolute maximum junction temperature (Tj) for the HZU12B1TRF-E-Q is 150°C, per the Absolute Maximum Ratings table on page 2 of REJ03G1216-0500. This rating applies under steady-state conditions at Ta = 25°C and must be derated linearly above that ambient temperature, as shown in Fig.3 (Power Dissipation vs. Ambient Temperature). The HZU12B1TRF-E-Q's thermal design supports operation in sealed industrial enclosures.
Is the HZU12B1TRF-E-Q RoHS-compliant and lead-free?
Yes-the HZU12B1TRF-E-Q meets RoHS Directive 2011/65/EU requirements and is lead-free. This is confirmed by Renesas' environmental compliance documentation and product marking conventions (e.g., "-E-Q" suffix denotes lead-free, halogen-free, and RoHS-compliant packaging). The HZU12B1TRF-E-Q uses matte tin plating on terminals and complies with JEDEC J-STD-020 moisture sensitivity level 1.
How does the noise performance of the HZU12B1TRF-E-Q compare to standard Zener diodes?
The HZU12B1TRF-E-Q delivers approximately 1/3 to 1/10 the noise voltage of standard HZU-series Zeners, as stated in the Features section. This reduction stems from optimized epitaxial planar structure and low-knee-noise processing-directly measurable in spectral density plots below 10 kHz. For low-noise applications like ECG amplifiers or high-resolution ADC references, the HZU12B1TRF-E-Q's noise advantage is both quantifiable and design-critical.
HZU12B1TRF-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:
- -
HZU12B1TRF-E-Q FAQ
1.How can I place an order for HZU12B1TRF-E-Q through Aetrix?
Please submit a Request for Quotation (RFQ) for HZU12B1TRF-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 HZU12B1TRF-E-Q reliable?
The price and inventory of HZU12B1TRF-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 HZU12B1TRF-E-Q is usually 5 days.
3.What payment methods are accepted for HZU12B1TRF-E-Q?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZU12B1TRF-E-Q transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZU12B1TRF-E-Q?
HZU12B1TRF-E-Q orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZU12B1TRF-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 HZU12B1TRF-E-Q?
For technical support, including HZU12B1TRF-E-Q datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZU12B1TRF-E-Q requirements.
6.How does Aetrix verify that HZU12B1TRF-E-Q is sourced from the original manufacturer or authorized distributors?
All HZU12B1TRF-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 HZU12B1TRF-E-Q meets industry standards.
7.What is the process for return or replacement of HZU12B1TRF-E-Q?
All HZU12B1TRF-E-Q units undergo pre-shipment inspection (PSI). If there is an issue with HZU12B1TRF-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 HZU12B1TRF-E-Q part is unused and in its original packaging.
Return procedure for HZU12B1TRF-E-Q:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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