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Renesas HZ18-3J-E
- Part No.:
- HZ18-3J-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ18-3J-E.pdf
- Description:
- DIODE ZENER 0.5W
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
HZ18-3J-E from Renesas is a silicon planar Zener diode engineered for low-noise voltage regulation in precision analog circuits, featuring a nominal zener voltage of 18.1–19.0 V at 0.5 mA test current, 400 mW power dissipation, 15.0 Ω dynamic impedance, and DO-35 glass package with orange body and navy blue cathode band.
For engineers reviewing the HZ18-3J-E datasheet, HZ18-3J-E pinout, HZ18-3J-E application, or HZ18-3J-E equivalent, key selection criteria include low-noise performance (≈1/3–1/10 of standard HZ series), tight zener voltage tolerance, temperature-stable regulation, and compatibility with space-constrained through-hole PCB layouts.
Technical Context
The HZ18-3J-E operates as a two-terminal shunt regulator with DC-tested zener characteristics, optimized for stable reference generation in low-current bias networks. Its low dynamic resistance (15.0 Ω) and low leakage support high-precision feedback paths in op-amp references and sensor excitation circuits.
Designed for operation at 0.5 mA nominal zener current, it exhibits a zener voltage temperature coefficient near zero (±0.02 %/°C typical per family data), enabling stable regulation across −55°C to +175°C junction temperature range without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 18.1–19.0 V at IZ = 0.5 mA - defines precise regulation threshold for reference design |
| Dynamic Resistance (rd) | 15.0 Ω max at IZ = 0.5 mA - ensures minimal output voltage variation under load transients |
| Power Dissipation (Pd) | 400 mW - supports continuous operation in compact through-hole layouts without forced cooling |
| Junction Temperature (Tj) | −55°C to +175°C - enables use in automotive under-hood and industrial control environments |
| Reverse Leakage (IR) | 1 μA max at VR = 15.0 V - minimizes error current in high-impedance reference nodes |
| Noise Level | ≈1/3–1/10 of standard HZ series - reduces broadband noise contribution in audio and measurement front-ends |
Pinout & Package
Package: DO-35 glass axial lead package (JEITA code GRZZ0002ZB-A), orange body with navy blue cathode band; leads tinned, mass ≈0.13 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to higher-potential node; reverse-biased during regulation |
| 2 (Anode) | Reference ground terminal | Typically tied to circuit common; establishes regulated voltage drop across device |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener structure | Diode noise reduced to ≈10–33% of legacy HZ series - critical for high-SNR instrumentation |
| Tight zener voltage tolerance | ±0.45 V window (18.1–19.0 V) at 0.5 mA - simplifies trimming in unadjusted reference designs |
| Low dynamic impedance | 15.0 Ω max - maintains regulation accuracy under varying load currents up to 1 mA |
| High thermal stability | Near-zero temperature coefficient near 18 V - avoids drift-induced errors in wide-temperature applications |
| Robust reliability | Rated for 175°C junction temperature and −55°C storage - suitable for extended-life industrial deployments |
Applications
| High-Precision Reference Supply | Low-Noise Sensor Excitation |
|---|---|
Use Scenario: Providing stable bias voltage for strain gauge bridges and RTD measurement circuits in data acquisition systems. IC Role / Device Role / Timing Role: Shunt voltage reference establishing fixed excitation potential independent of supply ripple. Use Value: 15.0 Ω dynamic resistance and low noise minimize measurement uncertainty and 1/f noise coupling into differential amplifiers. |
Use Scenario: Supplying clean, stable current source for photodiode or MEMS accelerometer biasing in portable medical devices. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA) Zener element setting reference voltage for constant-current generator topology. Use Value: Ultra-low reverse leakage prevents offset drift in nanoamp-level sensor signal chains over temperature and time. |
| Industrial Analog Front-End | Automotive Control Module Reference |
Use Scenario: Generating calibration reference for 16-bit ADCs in programmable logic controllers and motor drive feedback loops. IC Role / Device Role / Timing Role: Precision shunt regulator feeding voltage divider network that sets ADC full-scale input range. Use Value: 18.1–19.0 V zener range allows direct scaling to ±10 V or 0–5 V reference rails with minimal resistor tolerance impact. |
Use Scenario: Stabilizing microcontroller VREF inputs in engine control units exposed to under-hood thermal cycling. IC Role / Device Role / Timing Role: High-reliability voltage clamp maintaining reference integrity across −40°C to +125°C ambient. Use Value: 175°C junction rating and low tempco ensure <±0.5% regulation shift over full automotive temperature range. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4746A | Zener voltage 18 V ±5%, rd = 20 Ω, Pd = 1.0 W, DO-41 package | Higher power but larger footprint; higher noise and looser tolerance than HZ18-3J-E | Preferred where board space permits and higher dissipation is needed; not suitable for ultra-low-noise designs |
| BZX85C18 | Zener voltage 18 V ±5%, rd = 25 Ω, Pd = 1.3 W, DO-41 package | Higher power and wider tolerance; no documented low-noise optimization | Acceptable for general-purpose regulation; lacks HZ18-3J-E's noise reduction and tight VZ binning |
Compared with 1N4746A and BZX85C18, the HZ18-3J-E delivers superior noise performance, tighter voltage tolerance, and lower dynamic impedance in a smaller DO-35 package-making it optimal for space-constrained, high-fidelity analog reference designs where signal integrity is critical.
Availability
HZ18-3J-E is available at Aetrix Electronics and suitable for high-precision reference supplies, low-noise sensor excitation, and industrial analog front-end designs requiring stable component supply with traceable sourcing and long-term lifecycle support.
Supply support for HZ18-3J-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 specializing in microcontrollers, analog, and power solutions for automotive, industrial, and infrastructure markets.
The HZ-L Series Zener diodes were developed specifically for low-noise, high-stability voltage reference applications in precision analog systems-emphasizing reduced broadband noise, tight VZ binning, and robust thermal performance.
FAQ
What is the exact zener voltage range specified for HZ18-3J-E?
The HZ18-3J-E has a guaranteed zener voltage range of 18.1 V to 19.0 V when tested at IZ = 0.5 mA and Ta = 25°C. This tight 0.9 V window reflects Renesas' binning for high-precision reference applications and is confirmed in the REJ03G0182-0300 datasheet on page 3.
Is HZ18-3J-E suitable for surface-mount assembly?
No, the HZ18-3J-E uses a DO-35 axial glass package with leads designed for through-hole mounting only. It is not compatible with reflow or wave soldering processes intended for SMD components. The package dimensions and JEITA code GRZZ0002ZB-A confirm its through-hole form factor.
What is the maximum reverse leakage current for HZ18-3J-E?
The HZ18-3J-E specifies a maximum reverse leakage current (IR) of 1 μA at VR = 15.0 V and Ta = 25°C. This low leakage supports high-impedance reference nodes and minimizes error current in precision bias networks.
Does HZ18-3J-E have a documented temperature coefficient?
While the HZ18-3J-E itself does not list γZ individually, the HZ-L Series datasheet (Fig.2, page 4) shows zener voltage temperature coefficients near ±0.02 %/°C for 18 V-class devices. This near-zero coefficient is a defining feature of the HZ-L family and applies directly to HZ18-3J-E.
How does the noise performance of HZ18-3J-E compare to standard Zener diodes?
The HZ18-3J-E achieves approximately 1/3 to 1/10 the noise level of standard HZ-series Zeners, as stated in the "Features" section of the REJ03G0182-0300 datasheet. This low-noise characteristic is intrinsic to its silicon planar construction and process optimization, making HZ18-3J-E especially valuable in audio preamps and precision measurement circuits.
HZ18-3J-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:
- -
HZ18-3J-E FAQ
1.How can I place an order for HZ18-3J-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ18-3J-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 HZ18-3J-E reliable?
The price and inventory of HZ18-3J-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ18-3J-E is usually 5 days.
3.What payment methods are accepted for HZ18-3J-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ18-3J-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ18-3J-E?
HZ18-3J-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ18-3J-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 HZ18-3J-E?
For technical support, including HZ18-3J-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ18-3J-E requirements.
6.How does Aetrix verify that HZ18-3J-E is sourced from the original manufacturer or authorized distributors?
All HZ18-3J-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 HZ18-3J-E meets industry standards.
7.What is the process for return or replacement of HZ18-3J-E?
All HZ18-3J-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ18-3J-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 HZ18-3J-E part is unused and in its original packaging.
Return procedure for HZ18-3J-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ18-3J-E Tags
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MM5Z5V1ST1G
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