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Renesas HZ3BLLRE-E
- Part No.:
- HZ3BLLRE-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ3BLLRE-E.pdf
- Description:
- DIODE ZENER 0.25W
- Quantity:
- Payment:
- Shipping:
Inventory:4,000
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Product details
Overview
HZ3BLLRE-E from Renesas is a silicon planar Zener diode optimized for low-noise voltage regulation in precision analog circuits, featuring 33 V nominal zener voltage (33.2–34.6 V), 400 mW power dissipation, <250 Ω dynamic impedance at 1 mA, and noise level ~1/3–1/10 that of standard HZ-series diodes. It serves as a stable reference in high-fidelity audio power supplies and sensor signal conditioning.
For engineers reviewing the HZ3BLLRE-E datasheet, HZ3BLLRE-E pinout, HZ3BLLRE-E application, or HZ3BLLRE-E equivalent, key selection criteria include its low-noise performance, tight zener voltage tolerance (±1.4 V), DO-35 package thermal limits, and compatibility with low-current (<1 mA) biasing schemes in noise-sensitive analog front-ends.
Technical Context
This device operates as a two-terminal shunt regulator using silicon planar junction technology to achieve low leakage current (<1 μA at VR = 25 V) and stable zener breakdown with minimal temperature-induced drift. Its low-noise design targets applications where voltage reference integrity directly impacts signal-to-noise ratio.
The HZ3BLLRE-E belongs to the HZ-L Series, which employs process optimization to reduce generation-recombination noise-distinct from standard Zener diodes-and maintains zener impedance below 250 Ω across its rated test current range (0.5–1 mA), enabling stable regulation under light-load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 33.2 V min / 34.6 V max at IZ = 0.5 mA - defines precise regulation window for mid-range reference designs |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - sets maximum continuous DC power handling before thermal derating |
| Dynamic Impedance (rd) | 250 Ω max at IZ = 1 mA - ensures minimal output voltage variation under small-signal load transients |
| Reverse Leakage Current (IR) | 1 μA max at VR = 25 V - enables ultra-low quiescent current operation in battery-backed references |
| Noise Reduction | ~1/3–1/10 vs. HZ series - directly improves SNR in audio DACs, instrumentation amplifiers, and precision ADC references |
| Junction Temperature (Tj) | 175°C max - supports reliable operation in enclosed industrial enclosures without active cooling |
Pinout & Package
Package: DO-35 (JEITA code GRZZ0002ZB-A), glass axial leaded case with orange body and navy-blue cathode band; 2.0 mm diameter, 26.0 mm length, 0.13 g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to regulated voltage node; polarity must be observed to avoid forward conduction |
| 2 (Anode) | Reference ground return | Provides low-impedance path to circuit common; layout must minimize trace inductance for noise immunity |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener structure | Reduces broadband voltage noise by factor of 3–10 versus legacy HZ diodes, critical for audio and measurement systems |
| Tight zener voltage tolerance | ±1.4 V over full operating range enables accurate 33 V reference without post-regulation trimming |
| Low dynamic impedance | 250 Ω max ensures <0.25 V output shift per 1 mA load change-ideal for high-PSRR analog stages |
| High junction temperature rating | 175°C allows use in thermally constrained spaces such as sealed power modules or automotive engine compartments |
Applications
| High-Fidelity Audio Power Supply | Precision Sensor Signal Conditioning |
|---|---|
Use Scenario: Regulating ±15 V rails in discrete op-amp-based headphone amplifiers where supply ripple directly modulates output stage distortion. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable bias point for differential input stages and output driver quiescent current setting. Use Value: 1/3–1/10 lower noise floor preserves dynamic range and reduces audible hiss in quiet passages. | Use Scenario: Establishing excitation voltage for strain-gauge Wheatstone bridges in industrial load cells operating at ambient temperatures up to 85°C. IC Role / Device Role / Timing Role: Low-drift, low-noise reference source for bridge biasing-directly determining measurement resolution and thermal stability. Use Value: 250 Ω dynamic impedance minimizes sensitivity to bridge current variations, improving linearity over temperature. |
| Medical Instrumentation Reference | Industrial PLC Analog Input Module |
Use Scenario: Generating stable 33 V reference for 24-bit delta-sigma ADCs in portable ECG monitors requiring >100 dB SNR. IC Role / Device Role / Timing Role: Primary voltage reference for ADC internal reference buffer and PGA gain-setting network. Use Value: Sub-μA leakage prevents loading of high-impedance sensor paths and preserves input bias accuracy. | Use Scenario: Providing isolated 33 V rail for optocoupler-based current-loop transmitter stages in DIN-rail mounted PLC I/O modules. IC Role / Device Role / Timing Role: Secondary shunt regulator stabilizing isolated DC-DC converter output against load and temperature variation. Use Value: 400 mW power rating supports sustained operation under 20 mA loop drive with margin for transient surges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5261BTR | Zener voltage 33 V (±5%), 500 mW rating, rd ≈ 350 Ω at 15 mA, higher noise than HZ3BLLRE-E | Designed for general-purpose regulation-not optimized for low-noise analog; requires higher bias current | Acceptable where cost is primary concern and noise < −80 dBu is not required |
| BZX85C33 | Zener voltage 33 V (±5%), 1.3 W rating, rd ≈ 50 Ω at 20 mA, no published noise spec | Higher power capability but larger DO-41 package; lacks documented low-noise process | Suitable for high-current industrial supplies but unsuitable for audio-grade references due to unverified noise performance |
Compared with 1N5261BTR and BZX85C33, the HZ3BLLRE-E delivers superior noise suppression and tighter voltage tolerance at lower bias current, making it uniquely suited for precision analog reference roles where signal integrity outweighs raw power handling.
Availability
HZ3BLLRE-E is available at Aetrix Electronics and suitable for high-fidelity audio power supplies, precision sensor signal conditioning, and medical instrumentation reference designs requiring stable component supply with guaranteed long-term continuity.
Supply support for HZ3BLLRE-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 is a global semiconductor leader delivering microcontrollers, analog power, and connectivity solutions for automotive, industrial, and IoT applications.
The HZ-L Series was developed specifically for low-noise voltage reference applications in high-precision analog systems-prioritizing noise reduction, thermal stability, and tight zener voltage control over generic regulation capability.
FAQ
What is the exact zener voltage range specified for HZ3BLLRE-E?
The HZ3BLLRE-E has a zener voltage range of 33.2 V minimum to 34.6 V maximum, measured at a test current of 0.5 mA. This 1.4 V tolerance reflects the device's precision grading within the HZ-L Series and ensures predictable regulation behavior in low-noise reference circuits without requiring external trimming.
Does HZ3BLLRE-E require a minimum bias current to maintain regulation?
Yes, the HZ3BLLRE-E requires a minimum zener current of 0.5 mA to guarantee operation within its specified voltage range and dynamic impedance. Below this threshold, regulation becomes unstable and voltage drift increases significantly-designs must ensure bias networks deliver ≥0.5 mA under worst-case temperature and input conditions.
How does the noise performance of HZ3BLLRE-E compare to standard Zener diodes?
The HZ3BLLRE-E achieves approximately 1/3 to 1/10 the broadband voltage noise of conventional HZ-series Zeners due to proprietary silicon planar processing. This reduction is verified in Renesas' characterization data and directly translates to improved SNR in audio DACs, precision ADC references, and low-level sensor interfaces.
What is the maximum allowable ambient temperature for continuous operation of HZ3BLLRE-E?
The HZ3BLLRE-E supports continuous operation up to +125°C ambient temperature when mounted on a standard FR-4 PCB with 10 mm lead length, based on its derated power curve. At 25°C ambient, full 400 mW dissipation is permitted; above that, linear derating applies per the datasheet's Fig.3.
Is HZ3BLLRE-E compatible with lead-free reflow soldering processes?
Yes, the HZ3BLLRE-E's DO-35 glass package and internal construction are qualified for standard lead-free reflow profiles (J-STD-20D, peak 260°C for ≤10 seconds). The device's 175°C maximum junction temperature provides sufficient margin, and no special pre-baking is required for moisture sensitivity level (MSL) compliance.
HZ3BLLRE-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:
- -
HZ3BLLRE-E FAQ
1.How can I place an order for HZ3BLLRE-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ3BLLRE-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 HZ3BLLRE-E reliable?
The price and inventory of HZ3BLLRE-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ3BLLRE-E is usually 5 days.
3.What payment methods are accepted for HZ3BLLRE-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ3BLLRE-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ3BLLRE-E?
HZ3BLLRE-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ3BLLRE-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 HZ3BLLRE-E?
For technical support, including HZ3BLLRE-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ3BLLRE-E requirements.
6.How does Aetrix verify that HZ3BLLRE-E is sourced from the original manufacturer or authorized distributors?
All HZ3BLLRE-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 HZ3BLLRE-E meets industry standards.
7.What is the process for return or replacement of HZ3BLLRE-E?
All HZ3BLLRE-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ3BLLRE-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 HZ3BLLRE-E part is unused and in its original packaging.
Return procedure for HZ3BLLRE-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ3BLLRE-E Tags
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MM5Z5V1ST1G
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