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Renesas HZ3A1J-E
- Part No.:
- HZ3A1J-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ3A1J-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:4,000
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Product details
Overview
HZ3A1J-E from Renesas is a silicon planar Zener diode optimized for low-noise voltage regulation in precision analog circuits, featuring a nominal zener voltage of 5.2 V, 400 mW power dissipation, and dynamic resistance of 150 Ω at 0.5 mA test current. It is used in stabilized power supplies, reference voltage sources, and noise-sensitive instrumentation where low diode noise (≈1/3–1/10 that of standard HZ series) and tight voltage tolerance are critical.
For engineers reviewing the HZ3A1J-E datasheet, HZ3A1J-E pinout, HZ3A1J-E application, or HZ3A1J-E equivalent, key selection criteria include its DO-35 package, cathode-anode terminal configuration, low leakage current (<1 μA at VR = 2.0 V), and temperature coefficient behavior across the 5.2–5.5 V zener range.
Technical Context
The HZ3A1J-E operates as a two-terminal shunt regulator with DC-tested zener characteristics, designed for stable DC biasing and low-noise voltage referencing. Its junction temperature rating of 175°C and storage range of −55 to +175°C support operation in industrial ambient conditions.
It belongs to the HZ-L Series, distinguished by reduced noise versus legacy HZ parts, lower zener impedance, and tighter VZ tolerances-specifically, 5.2 V (min) to 5.5 V (max) at IZ = 0.5 mA, with rd = 150 Ω measured under identical conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.2 V (min) to 5.5 V (max) at IZ = 0.5 mA - defines precise regulation window for low-drift references |
| Power Dissipation (Pd) | 400 mW - supports continuous operation in compact PCB layouts without forced cooling |
| Dynamic Resistance (rd) | 150 Ω at IZ = 0.5 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage (IR) | <1 μA at VR = 2.0 V - enables high-impedance bias networks with negligible error current |
| Junction Temperature (Tj) | 175°C - allows reliable operation in thermally constrained enclosures or high-ambient environments |
| Noise Performance | ≈1/3–1/10 of standard HZ series - directly reduces broadband voltage noise in sensitive amplifier stages |
Pinout & Package
Package: DO-35 (JEITA code GRZZ0002ZB-A), glass axial leaded package with orange body color and navy blue cathode band. Total mass ≈0.13 g; lead spacing E = 4.2 mm; body diameter φD = 2.0 mm; length L = 26.0 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-side reference node | Connected to regulated positive rail; polarity must be observed to avoid reverse breakdown failure |
| 2 (Anode) | Ground or return path | Serves as current sink; ties to circuit common or negative supply to complete regulation loop |
Key Features
| Feature | Design Value |
|---|---|
| Low diode noise | Reduces RMS voltage noise in precision references by factor of 3–10 vs. HZ series, improving SNR in ADC front-ends |
| Tight zener voltage tolerance | ±0.15 V window (5.2–5.5 V) at 0.5 mA enables accurate 5 V system bias without post-regulation trimming |
| Low dynamic impedance | 150 Ω maintains regulation stability under ±10% load current variation in unregulated input conditions |
| High thermal robustness | 175°C max junction temperature supports use in sealed industrial controllers without derating below 400 mW |
Applications
| Instrumentation Reference | Precision Power Supply |
|---|---|
Use Scenario: Providing stable 5.2 V reference for 16-bit SAR ADCs in portable multimeters. IC Role / Device Role / Timing Role: Shunt voltage reference establishing high-accuracy analog ground-referenced bias point. Use Value: Low 150 Ω rd minimizes code-dependent reference droop; sub-μA IR prevents loading errors in high-Z divider networks. |
Use Scenario: Regulating auxiliary 5 V rail in isolated DC-DC converter feedback loop. IC Role / Device Role / Timing Role: Secondary-side zener clamp setting optocoupler LED current threshold. Use Value: 400 mW Pd accommodates transient overloads; low noise avoids coupling into control-loop error amplifiers. |
| Audio Signal Conditioning | Industrial Sensor Interface |
Use Scenario: Biasing JFET-input op-amps in low-noise microphone preamplifiers. IC Role / Device Role / Timing Role: Low-noise DC bias source for gate voltage stabilization. Use Value: Diode noise reduction directly lowers input-referred voltage noise floor, preserving audio SNR above 20 kHz. |
Use Scenario: Setting excitation voltage for 350 Ω strain gauge bridges in factory-floor load cells. IC Role / Device Role / Timing Role: Stable excitation reference compensating for supply ripple and temperature drift. Use Value: Tight 5.2–5.5 V tolerance and low tempco ensure bridge output linearity remains within ±0.02% FS over −25°C to +70°C. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4728A | Zener voltage 3.3 V (fixed), rd = 10 Ω, Pd = 1 W, DO-41 package | Higher power and lower impedance but incompatible voltage level and larger footprint | Select only if 3.3 V regulation and higher surge tolerance are required; not interchangeable with HZ3A1J-E |
| BZX55C5V1 | Zener voltage 5.1 V (±5%), rd = 600 Ω, Pd = 500 mW, DO-35 package | Same package and similar voltage but significantly higher dynamic resistance and noise | Acceptable for non-critical biasing where noise and regulation stiffness are secondary to cost |
Compared with 1N4728A and BZX55C5V1, the HZ3A1J-E delivers superior low-noise performance and tighter VZ tolerance in the 5.2–5.5 V range, making it uniquely suited for metrology-grade references where signal integrity outweighs raw power handling.
Availability
HZ3A1J-E is available at Aetrix Electronics and suitable for stabilized power supplies, precision instrumentation references, and low-noise analog signal conditioning requiring stable component supply and consistent parametric performance across production lots.
Supply support for HZ3A1J-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 power devices, and timing solutions, with leadership in automotive, industrial, and infrastructure markets.
The HZ-L Series was developed specifically for low-noise voltage reference applications in high-fidelity analog systems, emphasizing reduced diode noise, tight zener voltage distribution, and stable thermal coefficients over broad operating ranges.
FAQ
What is the exact zener voltage range specified for HZ3A1J-E?
The HZ3A1J-E has a guaranteed zener voltage range of 5.2 V (minimum) to 5.5 V (maximum) when tested at IZ = 0.5 mA and Ta = 25°C. This narrow 0.3 V window supports high-accuracy voltage referencing without external trimming, and the value is confirmed in the Renesas datasheet REJ03G0182-0300 Rev.3.00 on page 2.
Is HZ3A1J-E compatible with DO-35 socket footprints used for other Zener diodes?
Yes, the HZ3A1J-E uses the standard DO-35 package (JEITA code GRZZ0002ZB-A) with 4.2 mm lead spacing and 2.0 mm body diameter, matching mechanical dimensions of industry-standard DO-35 Zeners like BZX55 and 1N47xx series. No PCB layout change is needed for drop-in replacement within the same voltage class.
Does HZ3A1J-E have a specified temperature coefficient, and how does it affect performance?
The HZ3A1J-E exhibits a zener voltage temperature coefficient (γZ) of approximately −0.04 %/°C near 5.2 V, as shown in Figure 2 of the datasheet. This negative drift means output voltage decreases slightly with rising temperature, requiring compensation in ultra-stable references-but remains acceptable for most industrial biasing applications up to 70°C ambient.
Can HZ3A1J-E be used in AC-coupled or high-frequency applications?
No-HZ3A1J-E is characterized and rated for DC operation only, as explicitly noted in the datasheet ("Tested with DC"). Its capacitance, frequency response, and noise profile are not specified for AC or RF use; it is intended strictly for DC voltage regulation and low-frequency reference functions.
How does the noise performance of HZ3A1J-E compare to generic Zener diodes?
HZ3A1J-E achieves approximately 1/3 to 1/10 the broadband voltage noise of standard HZ-series Zeners due to optimized silicon planar construction and process controls. This is verified in Renesas' comparative noise characterization and makes HZ3A1J-E suitable for applications where reference noise directly limits system SNR, such as high-resolution data acquisition.
HZ3A1J-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:
- -
HZ3A1J-E FAQ
1.How can I place an order for HZ3A1J-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ3A1J-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 HZ3A1J-E reliable?
The price and inventory of HZ3A1J-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ3A1J-E is usually 5 days.
3.What payment methods are accepted for HZ3A1J-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ3A1J-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ3A1J-E?
HZ3A1J-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ3A1J-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 HZ3A1J-E?
For technical support, including HZ3A1J-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ3A1J-E requirements.
6.How does Aetrix verify that HZ3A1J-E is sourced from the original manufacturer or authorized distributors?
All HZ3A1J-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 HZ3A1J-E meets industry standards.
7.What is the process for return or replacement of HZ3A1J-E?
All HZ3A1J-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ3A1J-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 HZ3A1J-E part is unused and in its original packaging.
Return procedure for HZ3A1J-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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