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Renesas HZ22-3RE-E
- Part No.:
- HZ22-3RE-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ22-3RE-E.pdf
- Description:
- DIODE ZENER 0.5W
- Quantity:
- Payment:
- Shipping:
Inventory:4,000
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Product details
Overview
HZ22-3RE-E from Renesas is a silicon planar Zener diode optimized for low-noise voltage regulation in precision analog circuits, with a nominal zener voltage of 22.3–23.3 V, 400 mW power dissipation, 20.0 Ω dynamic resistance at 0.5 mA test current, and DO-35 glass package. It serves as a stable reference in low-drift power supplies and sensor biasing networks.
For engineers reviewing the HZ22-3RE-E datasheet, HZ22-3RE-E pinout, HZ22-3RE-E application, or HZ22-3RE-E equivalent, key selection criteria include its low-noise performance (1/3–1/10 lower than standard HZ series), tight zener voltage tolerance, temperature coefficient behavior below 0.1%/°C above 20 V, and suitability for low-current (<1 mA) stabilization where leakage and impedance stability are critical.
Technical Context
The HZ22-3RE-E operates as a two-terminal voltage reference using avalanche breakdown in a silicon planar junction, with cathode-anode polarity confirmed by navy-blue band marking. Its low-noise design targets applications requiring minimal broadband voltage fluctuation under fixed DC bias.
Electrical behavior is characterized at 25°C with 0.5 mA zener test current; dynamic resistance remains stable up to 1 mA, and reverse leakage stays below 1 μA at VR = 17.5 V. Junction temperature rating of 175°C supports operation in thermally constrained PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 22.3–23.3 V at IZ = 0.5 mA - defines stable regulation range for mid-range supply references |
| Power Dissipation (Pd) | 400 mW - limits maximum continuous DC current to ~17.9 mA at 22.3 V without heatsinking |
| Dynamic Resistance (rd) | 20.0 Ω at IZ = 0.5 mA - ensures <1% output variation over ±1 mA load shifts |
| Reverse Leakage (IR) | ≤1 μA at VR = 17.5 V - minimizes error current in high-impedance reference nodes |
| Junction Temperature (Tj) | 175°C - enables reliable operation in sealed enclosures or near heat-generating components |
| Package | DO-35 glass axial - provides hermetic sealing and thermal stability for long-term calibration integrity |
Pinout & Package
DO-35 glass axial package with orange body color and navy-blue cathode band. Cathode is marked end; anode is unmarked lead.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Banded End) | Cathode | Connected to regulated output node; must be held at higher potential than anode during conduction |
| 2 (Unbanded End) | Anode | Connected to circuit ground or lowest potential reference point; completes bias path |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise operation | Diode noise level ≈1/3–1/10 that of standard HZ series - reduces RMS voltage ripple in sensitive ADC references |
| Tight zener voltage tolerance | ±0.5 V window at 22.3–23.3 V - enables accurate 24 V rail monitoring without post-regulation trimming |
| Low zener impedance | 20.0 Ω dynamic resistance - maintains regulation stability across varying load currents in feedback loops |
| Hermetic DO-35 packaging | Glass-sealed axial construction - prevents moisture-induced parameter drift in humid environments |
Applications
| High-Precision Reference Supply | Low-Drift Sensor Biasing |
|---|---|
Use Scenario: Providing stable excitation voltage to strain gauge bridges in industrial weighing systems operating over −40°C to +85°C ambient. IC Role / Device Role / Timing Role: Voltage reference element establishing fixed bias point for Wheatstone bridge output conditioning. Use Value: Low temperature coefficient (<0.1%/°C) and low noise ensure bridge offset drift remains <50 μV/°C, enabling 16-bit measurement resolution. | Use Scenario: Biasing photodiode current-to-voltage amplifiers in optical smoke detectors requiring ultra-low dark-current error. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA) zener reference setting transimpedance amplifier gain node potential. Use Value: Sub-microamp reverse leakage prevents false alarm triggers caused by reference-induced input bias current errors. |
| Stabilized Power Monitor | Calibration Standard in Test Equipment |
Use Scenario: Monitoring 24 V DC bus integrity in programmable logic controller (PLC) backplanes with ±1% accuracy requirement. IC Role / Device Role / Timing Role: Shunt regulator clamping reference input to analog-to-digital converter measuring bus voltage. Use Value: 400 mW power rating allows direct shunt operation without series resistor, simplifying BOM and layout. | Use Scenario: Serving as traceable voltage standard in handheld multimeter calibration jigs used by field service technicians. IC Role / Device Role / Timing Role: Primary DC reference source against which DMM internal DACs and ADCs are adjusted. Use Value: Hermetic DO-35 package ensures long-term calibration stability (<50 ppm/year drift) under repeated thermal cycling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5255B (ON Semiconductor) | Zener voltage 22 V ±5%, rd = 27 Ω, Pd = 500 mW, DO-35 package | Higher dynamic resistance increases load regulation error; wider voltage tolerance requires tighter external filtering | Select when higher power margin is needed and noise sensitivity is secondary |
| BZX55-C22 (Vishay) | Zener voltage 22 V ±5%, rd = 30 Ω, Pd = 500 mW, DO-35 package, no low-noise specification | No documented noise reduction vs. standard Zeners; leakage typically 10× higher than HZ22-3RE-E at same VR | Select for cost-sensitive general-purpose regulation where noise floor is not critical |
Compared with 1N5255B and BZX55-C22, the HZ22-3RE-E delivers superior low-noise performance and tighter dynamic impedance control-critical for metrology-grade references-but requires stricter current limiting due to its 400 mW rating versus their 500 mW capability.
Availability
HZ22-3RE-E is available at Aetrix Electronics and suitable for high-precision reference supplies, low-drift sensor biasing, and stabilized power monitoring requiring stable component supply with full traceability and long-lifecycle support.
Supply support for HZ22-3RE-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 manufacturer specializing in microcontrollers, analog, and power devices for industrial, automotive, and infrastructure applications.
The HZ-L Series was designed specifically for low-noise, high-stability voltage reference applications in precision instrumentation and sensor signal chains where conventional Zener diodes introduce unacceptable noise or drift.
FAQ
What is the zener voltage range specified for HZ22-3RE-E?
The HZ22-3RE-E has a guaranteed zener voltage range of 22.3 V to 23.3 V when tested at IZ = 0.5 mA and Ta = 25°C. This 1.0 V window reflects the "3" variant within the HZ22-L family and ensures predictable regulation behavior without post-manufacturing sorting.
Does HZ22-3RE-E have a documented noise performance advantage over standard Zener diodes?
Yes - the HZ-L Series datasheet explicitly states that HZ22-3RE-E exhibits approximately 1/3 to 1/10 the noise level of the legacy HZ series. This low-noise characteristic is achieved through optimized silicon planar junction processing and is verified under DC test conditions per REJ03G0182-0300.
What is the maximum reverse leakage current for HZ22-3RE-E at 17.5 V?
The maximum reverse leakage current for HZ22-3RE-E is 1 μA when measured at VR = 17.5 V and Ta = 25°C. This low leakage supports use in high-impedance reference nodes where even nanoamp-level errors degrade accuracy.
Is HZ22-3RE-E supplied in tape-and-reel or bulk packaging?
HZ22-3RE-E is supplied in bulk packaging per the Renesas ordering information in REJ03G0182-0300. Tape-and-reel is not specified for this DO-35 device; automated placement requires custom carrier tape conversion by the assembler.
What is the temperature coefficient behavior of HZ22-3RE-E above 20 V?
Per Figure 2 in the HZ-L Series datasheet, the zener voltage temperature coefficient (γZ) for HZ22-3RE-E is less than ±0.1%/°C across its operating range. This low drift enables stable reference performance in unregulated ambient environments without active compensation.
HZ22-3RE-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:
- -
HZ22-3RE-E FAQ
1.How can I place an order for HZ22-3RE-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ22-3RE-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 HZ22-3RE-E reliable?
The price and inventory of HZ22-3RE-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ22-3RE-E is usually 5 days.
3.What payment methods are accepted for HZ22-3RE-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ22-3RE-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ22-3RE-E?
HZ22-3RE-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ22-3RE-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 HZ22-3RE-E?
For technical support, including HZ22-3RE-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ22-3RE-E requirements.
6.How does Aetrix verify that HZ22-3RE-E is sourced from the original manufacturer or authorized distributors?
All HZ22-3RE-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 HZ22-3RE-E meets industry standards.
7.What is the process for return or replacement of HZ22-3RE-E?
All HZ22-3RE-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ22-3RE-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 HZ22-3RE-E part is unused and in its original packaging.
Return procedure for HZ22-3RE-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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