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Renesas HZ30-3L-E
- Part No.:
- HZ30-3L-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ30-3L-E.pdf
- Description:
- DIODE ZENER 0.4W
- Quantity:
- Payment:
- Shipping:
Inventory:15,500
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Product details
Overview
HZ30-3L-E from Renesas is a silicon planar Zener diode engineered for low-noise voltage regulation in precision analog circuits, with a nominal zener voltage of 30.2–31.6 V at 0.5 mA test current, dynamic resistance of 27.0 Ω, maximum power dissipation of 400 mW, and junction temperature rating up to 175°C - deployed in reference supplies for data converters and sensor signal conditioning.
For engineers reviewing the HZ30-3L-E datasheet, HZ30-3L-E pinout, HZ30-3L-E application, or HZ30-3L-E equivalent, this page delivers verified electrical parameters, DO-35 package mechanical data, noise-performance context, thermal derating behavior, and validated alternative parts for low-drift, low-noise stabilization use cases.
Technical Context
The HZ30-3L-E operates as a two-terminal voltage reference device using silicon planar Zener breakdown, optimized for reduced diode noise (≈1/3–1/10 lower than standard HZ series) and low zener impedance. Its 30.2–31.6 V zener voltage range targets mid-to-high-voltage precision references where thermal stability and low leakage (<1 μA at VR = 27.0 V) are critical.
It exhibits a positive zener voltage temperature coefficient near +0.06 %/°C (≈18 mV/°C) per published characteristic curves, and its power dissipation linearly derates above 25°C ambient - maintaining 400 mW only at Ta ≤ 25°C, falling to zero at Ta = 125°C per Fig.3. Designed for DC-biased operation only, it is not rated for AC or transient surge conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 30.2–31.6 V at IZ = 0.5 mA - defines stable regulation point for high-accuracy biasing in analog front-ends. |
| Dynamic Resistance (rd) | 27.0 Ω at IZ = 0.5 mA - ensures minimal output voltage variation under load current shifts. |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - sets maximum continuous DC power handling before thermal shutdown risk. |
| Junction Temperature (Tj) | −55 to +175°C - enables operation in industrial and automotive under-hood environments with proper PCB thermal design. |
| Reverse Leakage (IR) | ≤1 μA at VR = 27.0 V - minimizes error current in high-impedance reference nodes. |
| Noise Level | ≈1/3–1/10 of standard HZ series - directly reduces broadband voltage noise in sensitive ADC reference paths. |
Pinout & Package
Package: DO-35 (JEITA code GRZZ0002ZB-A), glass axial leaded package with orange body color and navy blue cathode band. Mass: 0.13 g. Dimensions: φD = 2.0 mm, L = 26.0 mm, E = 4.2 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Negative terminal of Zener junction | Connected to higher-potential node; reverse-biased operation requires cathode > anode by ≥VZ. |
| 2 (Anode) | Positive terminal of Zener junction | Typically tied to circuit ground or low-impedance return path; establishes reference potential. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener structure | Diode noise reduced to ≈10–33% of standard HZ series - critical for sub-LSB stability in 16-bit+ data acquisition systems. |
| Low dynamic impedance | 27.0 Ω at 0.5 mA - maintains regulation accuracy across ±10% load current variation in feedback networks. |
| Wide zener voltage range | 30.2–31.6 V tolerance window - accommodates process variation while ensuring guaranteed regulation within spec. |
| High junction temperature rating | 175°C max Tj - supports reliable operation in thermally constrained PCB layouts without forced cooling. |
| Low leakage current | ≤1 μA at 27.0 V reverse bias - prevents loading errors in high-Z op-amp reference buffers and voltage dividers. |
Applications
| High-Precision ADC Reference | Industrial Sensor Excitation |
|---|---|
|
Use Scenario: Providing stable 30 V reference for 24-bit delta-sigma ADCs in weigh-scale and strain-gauge measurement systems. IC Role / Device Role / Timing Role: Two-terminal passive voltage reference establishing absolute input full-scale range. Use Value: Low 27.0 Ω dynamic resistance and <1 μA leakage minimize gain drift and offset error over temperature and time. |
Use Scenario: Supplying constant-current excitation to RTD or bridge sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Zener-regulated current source bias element enabling ratiometric measurement integrity. Use Value: Reduced noise floor preserves SNR in microvolt-level bridge outputs; 175°C Tj rating supports extended field operation. |
| Laser Diode Bias Control | Medical Instrument Power Sequencing |
|
Use Scenario: Generating stable bias voltage for laser diode monitor photodiode amplifiers in optical transceivers. IC Role / Device Role / Timing Role: Low-noise voltage clamp protecting amplifier inputs from transient overvoltage during startup. Use Value: 1/3–1/10 noise reduction vs. standard HZ series directly improves photodiode signal fidelity and dynamic range. |
Use Scenario: Enabling controlled power-up sequencing of analog subsystems in portable ultrasound and ECG front-ends. IC Role / Device Role / Timing Role: Precision voltage threshold detector (via comparator) for supply rail validation. Use Value: Tight 30.2–31.6 V VZ tolerance ensures repeatable enable timing across production units and temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX85C30 (Nexperia) | Zener voltage 28.5–31.5 V; rd = 35 Ω; Pd = 1.3 W; DO-41 package; higher noise than HZ-L series. | Higher power handling but no low-noise optimization - suitable for general regulation, not precision references. | Select when higher power margin is needed and noise is non-critical; requires PCB pad revision due to DO-41 footprint. |
| 1N5257B (ON Semiconductor) | Zener voltage 30.0–32.0 V; rd = 37 Ω; Pd = 500 mW; DO-35 package; noise level uncharacterized in datasheet. | Same DO-35 footprint but lacks published noise specification - acceptable for cost-sensitive industrial supplies. | Choose for drop-in replacement where layout reuse is mandatory and noise performance is secondary to availability. |
Compared with BZX85C30 and 1N5257B, the HZ30-3L-E delivers measurably lower noise and tighter dynamic impedance in the same DO-35 form factor - making it the preferred choice for metrology-grade references where voltage stability and spectral purity are design-critical.
Availability
HZ30-3L-E is available at Aetrix Electronics and suitable for high-precision ADC reference design, industrial sensor excitation, and medical instrument power sequencing requiring stable component supply, long-term parametric consistency, and traceable manufacturing origin.
Supply support for HZ30-3L-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 leader specializing in microcontrollers, analog power devices, and high-reliability interface solutions for industrial, automotive, and infrastructure markets.
The HZ-L Series is part of Renesas' precision analog portfolio, designed specifically for low-noise, low-drift voltage reference applications in test & measurement, medical instrumentation, and high-resolution data acquisition systems.
FAQ
What is the exact zener voltage range for HZ30-3L-E?
The HZ30-3L-E has a specified zener voltage range of 30.2 V to 31.6 V when tested at IZ = 0.5 mA and Ta = 25°C. This tolerance window reflects process-controlled tight distribution for precision reference use, and is confirmed in Table on Page 3 of REJ03G0182-0300 Rev.3.00.
Is HZ30-3L-E suitable for AC-coupled or transient applications?
No - the HZ30-3L-E is characterized and rated for DC operation only, as explicitly noted in the datasheet ("Tested with DC"). It is not specified for surge current, repetitive peak reverse voltage, or AC impedance behavior, and must be used exclusively in steady-state reverse-biased configurations.
What is the thermal derating behavior of HZ30-3L-E above 25°C?
HZ30-3L-E power dissipation linearly derates from 400 mW at 25°C ambient to 0 mW at 125°C ambient, per Figure 3 in the datasheet. The derating slope is −4.7 mW/°C, meaning at 75°C ambient, maximum allowable Pd is 165 mW - critical for thermal design in enclosed enclosures.
Does HZ30-3L-E have a documented temperature coefficient?
Yes - the HZ30-3L-E exhibits a positive zener voltage temperature coefficient of approximately +0.06 %/°C (≈18 mV/°C), derived from Figure 2 in the datasheet showing γZ vs. VZ. This value is typical for 30 V-class Zeners and must be factored into total system drift budgets.
Can HZ30-3L-E replace standard HZ-series Zeners in existing designs?
Yes - HZ30-3L-E shares identical DO-35 packaging, pinout, and mounting dimensions with legacy HZ parts, but delivers significantly lower noise and improved dynamic impedance. Designers should verify that the tighter VZ tolerance (30.2–31.6 V) meets system headroom requirements before substitution.
HZ30-3L-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:
- -
HZ30-3L-E FAQ
1.How can I place an order for HZ30-3L-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ30-3L-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 HZ30-3L-E reliable?
The price and inventory of HZ30-3L-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ30-3L-E is usually 5 days.
3.What payment methods are accepted for HZ30-3L-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ30-3L-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ30-3L-E?
HZ30-3L-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ30-3L-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 HZ30-3L-E?
For technical support, including HZ30-3L-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ30-3L-E requirements.
6.How does Aetrix verify that HZ30-3L-E is sourced from the original manufacturer or authorized distributors?
All HZ30-3L-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 HZ30-3L-E meets industry standards.
7.What is the process for return or replacement of HZ30-3L-E?
All HZ30-3L-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ30-3L-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 HZ30-3L-E part is unused and in its original packaging.
Return procedure for HZ30-3L-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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