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Renesas HZ4A3J-E
- Part No.:
- HZ4A3J-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ4A3J-E.pdf
- Description:
- DIODE ZENER
- Quantity:
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Inventory:13,000
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Product details
Overview
HZ4A3J-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 5.6 V (min 5.4 V, max 5.7 V), 400 mW power dissipation, 80 Ω dynamic impedance at 0.5 mA test current, and DO-35 glass package with navy-blue cathode band. It serves as a stable reference in low-drift power supplies and sensor biasing networks.
For engineers reviewing the HZ4A3J-E datasheet, HZ4A3J-E pinout, HZ4A3J-E application, or HZ4A3J-E equivalent, key selection criteria include its low-noise performance (1/3–1/10 that of standard HZ series), tight zener voltage tolerance, low leakage, and suitability for temperature-stable reference designs requiring <100 ppm/°C drift.
Technical Context
This device operates as a two-terminal shunt regulator with DC-tested zener characteristics, optimized for low-noise applications where thermal stability and minimal voltage deviation under varying load are critical. Its junction temperature rating of 175°C supports operation in compact, thermally constrained PCB layouts.
The HZ4A3J-E belongs to the HZ-L Series, distinguished by reduced diode noise, low zener impedance, and a wide zener voltage range (5.2–38 V). It uses a silicon planar construction with gold-doped junctions to achieve consistent breakdown behavior and low temperature coefficient near zero-crossing points.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.4 V min / 5.7 V max at IZ = 0.5 mA - defines precise regulation window for low-drift references. |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - enables stable operation without heatsinking in space-constrained analog sections. |
| Dynamic Resistance (rd) | 80 Ω max at IZ = 0.5 mA - ensures minimal output voltage variation under small-signal load transients. |
| Reverse Leakage (IR) | 1 μA max at VR = 2.0 V - reduces error contribution in high-impedance bias networks. |
| Junction Temperature (Tj) | 175°C maximum - supports reliability in industrial environments with elevated ambient temperatures. |
| Package | DO-35 glass axial package (JEITA GRZZ0002ZB-A) - provides hermetic sealing and proven long-term stability for reference-grade use. |
Pinout & Package
DO-35 glass axial package with navy-blue cathode band; body color orange. Total 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) | Regulated output node | Connected to higher-potential rail; reverse-biased terminal where stable zener voltage develops. |
| 2 (Anode) | Reference ground node | Connected to circuit common; establishes return path for zener current and defines reference potential. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise zener operation | Noise level ~1/3–1/10 that of standard HZ series - critical for audio preamps and precision ADC references. |
| Tight zener voltage tolerance | ±0.15 V at 5.6 V nominal - enables accurate calibration without post-manufacture trimming. |
| Low dynamic impedance | 80 Ω max at 0.5 mA - maintains regulation accuracy across small-signal load variations. |
| Hermetic DO-35 packaging | JEITA GRZZ0002ZB-A compliant glass axial case - ensures long-term parameter stability and moisture resistance. |
| Wide operating temperature range | −55°C to +175°C storage; 175°C max junction - suitable for automotive under-hood and industrial control modules. |
Applications
| High-Fidelity Audio Biasing | Precision ADC Reference |
|---|---|
|
Use Scenario: Providing ultra-low-noise bias voltage for microphone preamplifier input stages and op-amp offset nulling networks. IC Role / Device Role / Timing Role: Shunt voltage reference regulating supply rail for analog signal chain front-end components. Use Value: 1/3–1/10 lower noise vs. standard HZ series directly improves SNR in sub-100 µV input designs. |
Use Scenario: Stabilizing reference voltage for 16-bit+ successive-approximation ADCs in data acquisition systems. IC Role / Device Role / Timing Role: Low-drift, low-impedance voltage reference source for converter internal reference buffer. Use Value: 80 Ω dynamic impedance minimizes code-dependent reference droop during conversion sampling events. |
| Industrial Sensor Excitation | Low-Power RTD/Thermistor Bias |
|
Use Scenario: Supplying stable excitation current to strain gauges and bridge-based pressure sensors in PLC analog input modules. IC Role / Device Role / Timing Role: Precision current-source reference element via series resistor configuration. Use Value: ±0.15 V zener tolerance ensures <0.3% full-scale error in 5 V bridge excitation without calibration. |
Use Scenario: Generating stable bias voltage for 3-wire RTD measurement circuits and thermistor linearization networks. IC Role / Device Role / Timing Role: Low-leakage (≤1 μA) voltage reference minimizing self-heating error in high-resistance sensing elements. Use Value: Sub-μA reverse leakage prevents measurable self-heating in 10 kΩ NTC thermistors at 25°C ambient. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4734A (ON Semiconductor) | Zener voltage 5.6 V ±5%, Pd = 1 W, rd = 9 Ω, DO-41 package, higher power but larger footprint and no low-noise specification. | Better suited for general-purpose regulation with higher current drive; not characterized for noise-sensitive analog use. | Select when higher power margin is needed and noise is non-critical; requires PCB layout change due to DO-41 size. |
| BZX55-C5V6 (Vishay) | Zener voltage 5.6 V ±5%, Pd = 500 mW, rd = 40 Ω, DO-35 package, no published noise data, wider VZ tolerance. | Adequate for basic voltage clamping and non-precision references; lacks documented low-noise performance. | Acceptable for cost-sensitive industrial controls where noise floor is not specified; verify long-term stability per batch. |
Compared with 1N4734A and BZX55-C5V6, the HZ4A3J-E delivers verified low-noise operation and tighter VZ tolerance in the same DO-35 footprint, making it the preferred choice for metrology-grade analog subsystems where spectral purity and drift are design-critical.
Availability
HZ4A3J-E is available at Aetrix Electronics and suitable for high-fidelity audio biasing, precision ADC reference, and industrial sensor excitation requiring stable component supply and long-term parametric consistency.
Supply support for HZ4A3J-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 Technology Corp. is a Japanese semiconductor manufacturer specializing in microcontrollers, analog mixed-signal devices, and power management ICs for industrial, automotive, and infrastructure markets.
The HZ-L Series was developed specifically for low-noise, high-stability voltage reference applications in precision analog signal chains, emphasizing reduced zener noise, tight voltage tolerance, and robust thermal performance.
FAQ
What is the exact zener voltage range for HZ4A3J-E?
The HZ4A3J-E has a guaranteed zener voltage range of 5.4 V minimum to 5.7 V maximum when tested at IZ = 0.5 mA and Ta = 25°C. This 0.3 V span reflects tight process control for reference-grade stability and is confirmed in the REJ03G0182-0300 datasheet, page 2.
Is HZ4A3J-E suitable for low-noise applications?
Yes - the HZ4A3J-E is explicitly designed for low-noise operation, with diode noise approximately 1/3 to 1/10 that of the standard HZ series. This is documented in the "Features" section of the REJ03G0182-0300 datasheet and validated through Renesas' silicon planar process and gold-doping optimization.
What package does HZ4A3J-E use, and what are its key mechanical dimensions?
HZ4A3J-E uses the DO-35 glass axial package (JEITA code GRZZ0002ZB-A), with body diameter φD = 2.0 mm, length L = 26.0 mm, and lead spacing E = 4.2 mm. The cathode is marked with a navy-blue band, and the body color is orange, per page 5 of the REJ03G0182-0300 datasheet.
What is the maximum power dissipation and thermal limit for HZ4A3J-E?
HZ4A3J-E has a maximum power dissipation of 400 mW at Ta = 25°C and a maximum junction temperature of 175°C. Derating begins above 25°C ambient, as shown in Figure 3 on page 4 of the REJ03G0182-0300 datasheet, supporting reliable operation in industrial temperature ranges.
Does HZ4A3J-E have a specified temperature coefficient?
While the HZ-L Series datasheet provides temperature coefficient curves (Figure 2, page 4), no single numeric γZ is specified for HZ4A3J-E individually. However, at ~5.6 V, the typical temperature coefficient falls between −0.02 %/°C and +0.02 %/°C, placing it near the zero-TC crossing point ideal for stable reference designs.
HZ4A3J-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:
- -
HZ4A3J-E FAQ
1.How can I place an order for HZ4A3J-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ4A3J-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 HZ4A3J-E reliable?
The price and inventory of HZ4A3J-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ4A3J-E is usually 5 days.
3.What payment methods are accepted for HZ4A3J-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ4A3J-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ4A3J-E?
HZ4A3J-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ4A3J-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 HZ4A3J-E?
For technical support, including HZ4A3J-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ4A3J-E requirements.
6.How does Aetrix verify that HZ4A3J-E is sourced from the original manufacturer or authorized distributors?
All HZ4A3J-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 HZ4A3J-E meets industry standards.
7.What is the process for return or replacement of HZ4A3J-E?
All HZ4A3J-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ4A3J-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 HZ4A3J-E part is unused and in its original packaging.
Return procedure for HZ4A3J-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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