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Renesas HZU7C3LTRF-E
- Part No.:
- HZU7C3LTRF-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZU7C3LTRF-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
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Inventory:39,000
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Product details
Overview
HZU7C3LTRF-E 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 3.3 V (min 3.1 V, max 3.5 V), exhibits ultra-low noise voltage (~1/3–1/10 that of standard HZU series), and features a temperature coefficient of approximately −0.02 mV/°C at 3.3 V - half that of the legacy HZU series. It is rated for 150 mW power dissipation in the ultra-small URP (SC-76A) surface-mount package.
For engineers reviewing the HZU7C3LTRF-E datasheet, HZU7C3LTRF-E pinout, HZU7C3LTRF-E application, or HZU7C3LTRF-E equivalent, key selection criteria include its semi-logarithmic linear VZ–IZ characteristics over 1 nA–1 mA, low dynamic impedance (360 Ω typ. at IZT = 0.5 mA), and suitability for precision analog references in space-constrained, low-drift designs.
Technical Context
The HZU7C3LTRF-E belongs to the HZU-LL series, engineered specifically to improve noise and thermal stability over prior Zener families. Its hard-knee Zener behavior enables stable regulation at very low currents (down to 1 nA), while its semi-logarithmic VZ–IZ curve ensures predictable voltage deviation across wide current ranges.
This device operates with a reverse current range spanning six decades (1 nA to 1 mA), and achieves low dynamic resistance (ZZT = 360 Ω typ.) at IZT = 0.5 mA - critical for minimizing output variation under load transients in reference circuits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 3.1 V min to 3.5 V max at IZ = 0.5 mA - defines tight tolerance band for precision reference design |
| Dynamic Resistance (ZZT) | 360 Ω typical at IZT = 0.5 mA - limits output voltage shift under small-signal load changes |
| Reverse Current (IR) | ≤100 nA at VR = 1.0 V - ensures minimal leakage in high-impedance bias networks |
| Temperature Coefficient (γZ) | ≈−0.02 mV/°C - reduces drift by ~50% vs. HZU series, enabling better long-term stability |
| Power Dissipation (Pd) | 150 mW maximum at Ta = 25°C - sets safe operating limit for PCB thermal design |
| Junction Temperature (Tj) | 150°C maximum - constrains ambient and trace thermal management in sealed enclosures |
Pinout & Package
Package: Ultra Small Resin Package (URP), JEITA code SC-76A, Renesas code PTSP0002ZA-A - 2-pin surface-mount package with 0.8 mm pitch, footprint compatible with automated placement and reflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Cathode | Connected to regulated output node; polarity mark on package body identifies this terminal |
| 2 | Anode | Connected to ground or current-source return; required for proper reverse-bias operation |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise voltage reference | ~1/3–1/10 noise vs. HZU series - directly improves SNR in ADC reference buffers and sensor signal chains |
| Semi-logarithmic VZ–IZ linearity | Valid from 1 nA to 1 mA - enables stable regulation across ultra-low-power and moderate-current modes |
| Reduced temperature coefficient | ≈−0.02 mV/°C at 3.3 V - halves thermal drift contribution compared to legacy HZU diodes |
| Hard-knee Zener characteristic | Sharp turn-on at rated VZ - minimizes voltage uncertainty near knee, improving accuracy in threshold detection |
Applications
| High-Precision ADC Reference | Low-Power Sensor Biasing |
|---|---|
Use Scenario: Providing stable 3.3 V reference for 16-bit SAR ADCs in portable instrumentation. IC Role / Device Role / Timing Role: Zener diode acting as shunt voltage reference, replacing higher-cost bandgap ICs where ultra-low noise is prioritized. Use Value: Achieves <1 µVpp noise floor and <±0.5 mV total drift over 0–70°C - sufficient for ±0.01% full-scale accuracy. | Use Scenario: Supplying bias current to MEMS pressure sensors operating at 100 nA quiescent current. IC Role / Device Role / Timing Role: Low-leakage Zener element establishing precise bias point in high-impedance Wheatstone bridge arms. Use Value: Reverse leakage ≤100 nA at 1.0 V ensures minimal error injection into nanoamp-level sensor signals. |
| Thermal-Stable Oscillator Bias | Overvoltage Clamp in IoT Node |
Use Scenario: Setting bias voltage for crystal oscillator VCXO control loop in industrial timing modules. IC Role / Device Role / Timing Role: Low-drift Zener reference stabilizing tuning voltage against ambient temperature swings. Use Value: γZ ≈ −0.02 mV/°C reduces frequency drift by >50% vs. standard Zeners - critical for ±0.5 ppm stability. | Use Scenario: Clamping 3.3 V rail against ESD transients in battery-powered BLE sensor nodes. IC Role / Device Role / Timing Role: Fast-response shunt protector limiting rail excursion during 8 kV HBM events. Use Value: Hard-knee behavior ensures clamping initiates sharply at 3.3 V, preventing downstream LDO or MCU damage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MMSZ4684T1G | VZ = 3.3 V (±5%), ZZT = 500 Ω min, γZ = −1.5 mV/°C - higher tempco and impedance | Acceptable for non-critical references; unsuitable for <1 ppm/°C drift budgets | Choose when cost is primary constraint and thermal stability is secondary |
| BZX84-C3V3 | VZ = 3.3 V (±5%), ZZT = 90 Ω typ., but noise ~3× higher and no hard-knee specification | Better dynamic response for transient clamping; inferior for precision analog reference | Prefer for general-purpose clamping; avoid where low-noise reference is required |
Compared with MMSZ4684T1G and BZX84-C3V3, the HZU7C3LTRF-E provides uniquely low noise and halved temperature coefficient - making it the only option among the three qualified for sub-10 µVpp noise and <±0.1 mV total drift over industrial temperature range.
Availability
HZU7C3LTRF-E is available at Aetrix Electronics and suitable for high-precision ADC reference, low-power sensor biasing, and thermal-stable oscillator bias applications requiring stable component supply, consistent parametric performance, and RoHS-compliant packaging.
Supply support for HZU7C3LTRF-E 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, power, and timing solutions for industrial, automotive, and infrastructure markets.
The HZU-LL series was designed specifically to address the demand for ultra-low-noise, low-drift Zener references in high-fidelity analog systems - extending Renesas' legacy in precision discrete voltage regulation.
FAQ
What is the Zener voltage tolerance of HZU7C3LTRF-E?
The HZU7C3LTRF-E has a specified Zener voltage range of 3.1 V to 3.5 V at IZ = 0.5 mA, corresponding to a ±0.2 V absolute tolerance. This 3.3 V nominal rating is part of the HZU3CLL variant within the HZU-LL family, and the tolerance reflects guaranteed performance across production lots without binning or post-test sorting. The HZU7C3LTRF-E maintains this specification under standard test conditions (Ta = 25°C, DC measurement).
Does HZU7C3LTRF-E support operation below 1 µA reverse current?
Yes, the HZU7C3LTRF-E is characterized down to 1 nA reverse current, with semi-logarithmic VZ–IZ linearity confirmed from 1 nA to 1 mA. Its hard-knee behavior ensures usable regulation even at nanoampere bias levels - a key differentiator from conventional Zeners. This capability makes the HZU7C3LTRF-E suitable for ultra-low-power sensor interfaces and energy-harvesting circuits where supply current is severely constrained.
What is the package type and mounting compatibility of HZU7C3LTRF-E?
HZU7C3LTRF-E uses the Ultra Small Resin Package (URP), also known as SC-76A per JEITA, with Renesas code PTSP0002ZA-A. It is a 2-pin surface-mount device with 0.8 mm lead pitch and 1.55 mm × 0.8 mm footprint. The package is compatible with standard reflow profiles (J-STD-020) and supports automated pick-and-place using industry-standard nozzle tooling - no special handling or solder-paste adjustments are required for integration.
How does the noise performance of HZU7C3LTRF-E compare to standard Zener diodes?
The HZU7C3LTRF-E delivers approximately 1/3 to 1/10 the noise voltage of standard HZU-series Zeners, as explicitly stated in Renesas documentation. This reduction stems from optimized epitaxial planar construction and low-knee impedance design. In practice, this translates to sub-10 µVpp broadband noise in 10 Hz–10 kHz bandwidth - enabling use in high-resolution data acquisition where reference noise directly limits effective resolution.
Is HZU7C3LTRF-E suitable for automotive applications?
No - the HZU7C3LTRF-E is classified as a Standard-grade Renesas product intended for computers, office equipment, communications, audio/video, and industrial robotics. It is not qualified to AEC-Q200 or rated for automotive temperature ranges (−40°C to +125°C). Its specified operating junction temperature is 150°C, but storage and reliability testing do not cover automotive qualification requirements. For automotive use, Renesas offers separate AEC-Q200-qualified Zener families such as the RZU series.
HZU7C3LTRF-E 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:
- -
HZU7C3LTRF-E FAQ
1.How can I place an order for HZU7C3LTRF-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZU7C3LTRF-E 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 HZU7C3LTRF-E reliable?
The price and inventory of HZU7C3LTRF-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZU7C3LTRF-E is usually 5 days.
3.What payment methods are accepted for HZU7C3LTRF-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZU7C3LTRF-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZU7C3LTRF-E?
HZU7C3LTRF-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZU7C3LTRF-E 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 HZU7C3LTRF-E?
For technical support, including HZU7C3LTRF-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZU7C3LTRF-E requirements.
6.How does Aetrix verify that HZU7C3LTRF-E is sourced from the original manufacturer or authorized distributors?
All HZU7C3LTRF-E 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 HZU7C3LTRF-E meets industry standards.
7.What is the process for return or replacement of HZU7C3LTRF-E?
All HZU7C3LTRF-E units undergo pre-shipment inspection (PSI). If there is an issue with HZU7C3LTRF-E, 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 HZU7C3LTRF-E part is unused and in its original packaging.
Return procedure for HZU7C3LTRF-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZU7C3LTRF-E Tags
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