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Renesas HZ5ALL-E
- Part No.:
- HZ5ALL-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ5ALL-E.pdf
- Description:
- DIODE ZENER 0.25W
- Quantity:
- Payment:
- Shipping:
Inventory:40,000
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Product details
Overview
HZ5ALL-E from Renesas is a silicon planar Zener diode optimized for hard-knee, low-noise voltage reference applications at low current (IZ = 1 nA to 1 mA), with a nominal zener voltage of 4.5 V (min 4.3 V, max 4.7 V), dynamic impedance of 380 Ω at IZT = 3.0 mA, and temperature coefficient of –0.03 %/°C - used in precision analog front-ends and low-power sensor biasing circuits.
For engineers reviewing the HZ5ALL-E datasheet, HZ5ALL-E pinout, HZ5ALL-E application, or HZ5ALL-E equivalent, key selection criteria include its sharp breakdown knee below 1 µA, ultra-low noise performance (~1/10 that of standard Zeners), DO-35 package compatibility, and stable VZ drift over temperature in battery-powered instrumentation.
Technical Context
The HZ5ALL-E employs a planar diffusion process to achieve semi-logarithmic VZ–IZ linearity across an ultra-wide reverse current range (1 nA to 1 mA), enabling stable regulation even under microampere bias conditions where conventional Zeners exhibit soft knees and high dynamic impedance.
Its low temperature coefficient (–0.03 %/°C) and low dynamic resistance (380 Ω at 3 mA) stem from optimized doping profiles and junction geometry, making it suitable for low-drift references in portable medical sensors and high-resolution ADC voltage references without active compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 4.3 V min to 4.7 V max at IZ = 0.5 mA - ensures tight tolerance for ±2.2% reference stability in low-current bias networks |
| Dynamic Impedance (ZZT) | 380 Ω typical at IZT = 3.0 mA - minimizes output voltage variation under load transients in precision analog supplies |
| Reverse Current (IR) | ≤100 nA at VR = 1.0 V - enables ultra-low quiescent current operation in energy-harvesting and battery-backed systems |
| Temperature Coefficient (γZ) | –0.03 %/°C - reduces thermal drift to <±0.15 mV/°C near room temperature for stable sensor excitation |
| Power Dissipation (Pd) | 250 mW maximum - supports continuous operation up to 100°C ambient in compact DO-35 PCB layouts |
| Junction Temperature (Tj) | 175°C maximum - allows reliable use in industrial environments with localized heating |
Pinout & Package
Package: DO-35 (JEITA code GRZZ0002ZB-A), glass axial leaded case with navy blue cathode band and verdure body color; 2.5 mm diameter × 5 mm length; 0.13 g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener voltage reference node | Connected to regulated output or feedback point; polarity must be observed to avoid forward conduction |
| 2 (Anode) | Current return path / ground reference | Biased through series resistor to establish IZ; serves as common reference for low-noise analog stages |
Key Features
| Feature | Design Value |
|---|---|
| Semi-logarithmic VZ–IZ linearity | Valid from 1 nA to 1 mA - enables stable reference generation at nanoampere bias currents without external amplification |
| Hard breakdown knee | ∆VZ1 = 0.5 V max (0.05 mA → 0.5 mA), ∆VZ2 = 0.6 V max (0.001 mA → 0.05 mA) - delivers abrupt, predictable turn-on critical for threshold detection |
| Low dynamic impedance | 380 Ω at 3 mA - maintains <0.4% output variation under 100 µA load steps in precision voltage monitors |
| Ultra-low noise | ~1/10 noise of standard Zeners - reduces RMS noise floor in 16-bit+ data acquisition front-ends |
Applications
| Portable Medical Sensors | High-Resolution ADC References |
|---|---|
Use Scenario: Biasing thermistor or RTD bridges in wearable ECG/SpO₂ modules powered by coin-cell batteries. IC Role / Device Role / Timing Role: Low-current Zener reference providing stable 4.5 V excitation voltage for ratiometric measurement. Use Value: Enables <1 µA total quiescent current while maintaining ±0.5% reference accuracy over 0–50°C due to low γZ and hard knee. | Use Scenario: Reference source for 18-bit SAR ADCs in portable test equipment requiring minimal self-heating. IC Role / Device Role / Timing Role: Passive voltage reference replacing buffered IC references to reduce power and board area. Use Value: Delivers 4.5 V ±2.2% with <0.15 mV/°C drift and sub-10 nV/√Hz noise - sufficient for 16-bit ENOB without trimming. |
| Energy-Harvesting Power Management | Industrial Loop-Powered Transmitters |
Use Scenario: Regulating output of piezoelectric or RF energy harvesters delivering 1–10 µA average current. IC Role / Device Role / Timing Role: Primary voltage clamp defining upper rail for ultra-low-power LDO or comparator supply. Use Value: Operates down to 1 nA reverse current with predictable knee - eliminates need for active regulation in µW-scale systems. | Use Scenario: Providing stable 4.5 V reference for 4–20 mA transmitter signal conditioning in hazardous-area field devices. IC Role / Device Role / Timing Role: Precision shunt reference setting current loop compliance voltage and sensor bias. Use Value: Maintains <±0.3% VZ stability over –40°C to +85°C ambient, meeting IEC 61000-6-2 immunity requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5229B (ON Semiconductor) | VZ = 4.3 V ±5%, ZZT = 25 Ω at 20 mA, γZ = +0.04 %/°C - higher test current, positive TC, tighter VZ tolerance but no hard-knee optimization | Requires ≥20 mA bias; unsuitable for sub-µA operation or low-drift DC-coupled references | Prefer HZ5ALL-E when operating below 10 µA or requiring <0.05 %/°C drift; choose 1N5229B only if higher bias current is available and tighter initial tolerance is prioritized |
| BZX84-C4V3 (Diodes Inc.) | VZ = 4.3 V ±5%, ZZT = 90 Ω at 5 mA, γZ = +0.06 %/°C - SOT-23 surface-mount, higher noise, no specified low-current linearity | Designed for general-purpose regulation; lacks verified 1 nA–1 mA linearity or low-noise characterization | Select HZ5ALL-E for hard-knee behavior and noise-sensitive analog biasing; BZX84-C4V3 is viable only in cost-sensitive, non-precision, reflow-compatible designs |
Compared with 1N5229B and BZX84-C4V3, the HZ5ALL-E uniquely delivers verified semi-logarithmic linearity down to 1 nA, negative temperature coefficient, and ultra-low noise - making it the only option among the three qualified for nanoampere-biased, low-drift, low-noise reference applications.
Availability
HZ5ALL-E is available at Aetrix Electronics and suitable for portable medical sensors, high-resolution ADC references, and energy-harvesting power management requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for HZ5ALL-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, and power solutions for automotive, industrial, and IoT applications.
The HZ-LL Series was designed specifically for ultra-low-noise, hard-knee Zener reference applications in battery-constrained and precision analog systems - emphasizing performance below 1 µA bias current.
FAQ
What is the guaranteed zener voltage range for HZ5ALL-E at 0.5 mA test current?
The HZ5ALL-E guarantees a zener voltage between 4.3 V and 4.7 V when measured at IZ = 0.5 mA, per Renesas datasheet REJ03G0183-0300 Rev.3.00. This ±0.2 V window corresponds to ±2.2% tolerance around the nominal 4.5 V rating and is validated across production lots using DC testing methods.
Does HZ5ALL-E support operation below 1 µA reverse current?
Yes, the HZ5ALL-E is characterized for semi-logarithmic VZ–IZ linearity from 1 nA to 1 mA, with documented ∆VZ2 = 0.6 V max between 1 nA and 50 nA. Its hard-knee behavior remains stable down to nanoampere levels, making it suitable for energy-harvesting and ultra-low-power sensor biasing where traditional Zeners fail to regulate.
What is the thermal performance of HZ5ALL-E in a standard DO-35 footprint?
In a standard DO-35 layout on FR-4 PCB (100 × 180 × 1.6 mm paper phenol board), the HZ5ALL-E maintains Pd = 250 mW up to 50°C ambient, derating linearly to zero at 150°C. Its junction-to-ambient thermal resistance is ~600°C/W, consistent with glass-body axial packages - confirming suitability for unheatsinked industrial control modules.
How does the temperature coefficient of HZ5ALL-E compare to standard 4.3 V Zeners?
The HZ5ALL-E exhibits a temperature coefficient of –0.03 %/°C (≈ –1.35 mV/°C), significantly lower in magnitude and opposite in sign to typical 4.3 V Zeners like 1N5229B (+0.04 %/°C). This negative, low-drift behavior minimizes net VZ shift across –40°C to +85°C, especially when paired with positive-TC components in compensated references.
Is HZ5ALL-E available in tape-and-reel packaging for automated assembly?
Yes, HZ5ALL-E is supplied in tape-and-reel format compatible with standard DO-35 axial feeders (EIA-481-D compliant), with 2,000 units per reel. Renesas part marking includes navy blue cathode band and "HZ5ALL-E" laser etch; Aetrix Electronics provides full traceability including lot date codes and JEDEC-compliant packaging documentation.
HZ5ALL-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:
- -
HZ5ALL-E FAQ
1.How can I place an order for HZ5ALL-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ5ALL-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 HZ5ALL-E reliable?
The price and inventory of HZ5ALL-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ5ALL-E is usually 5 days.
3.What payment methods are accepted for HZ5ALL-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ5ALL-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ5ALL-E?
HZ5ALL-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ5ALL-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 HZ5ALL-E?
For technical support, including HZ5ALL-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ5ALL-E requirements.
6.How does Aetrix verify that HZ5ALL-E is sourced from the original manufacturer or authorized distributors?
All HZ5ALL-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 HZ5ALL-E meets industry standards.
7.What is the process for return or replacement of HZ5ALL-E?
All HZ5ALL-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ5ALL-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 HZ5ALL-E part is unused and in its original packaging.
Return procedure for HZ5ALL-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ5ALL-E Tags
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