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Renesas HZ5A3J-E
- Part No.:
- HZ5A3J-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ5A3J-E.pdf
- Description:
- DIODE ZENER 0.5W
- Quantity:
- Payment:
- Shipping:
Inventory:8,500
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Product details
Overview
HZ5A3J-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 5.4 V to 5.7 V, 400 mW power dissipation, 150 Ω dynamic impedance at 0.5 mA, and DO-35 glass package with navy blue cathode band - used in reference voltage generation for ADCs and sensor signal conditioning.
For engineers reviewing the HZ5A3J-E datasheet, HZ5A3J-E pinout, HZ5A3J-E application, or HZ5A3J-E equivalent, key selection criteria include zener voltage tolerance (±0.3 V), low noise performance (1/3–1/10 of standard HZ series), temperature coefficient behavior, and DO-35 thermal derating above 25°C ambient.
Technical Context
The HZ5A3J-E operates as a two-terminal shunt regulator with DC-tested zener breakdown characteristics. Its low-noise design targets applications requiring stable biasing where voltage reference integrity directly impacts measurement accuracy.
It exhibits a zener voltage temperature coefficient near zero crossing (~6.2 V), but at its 5.4–5.7 V range shows negative γZ (−0.06 to −0.08 %/°C), and maintains ≤150 Ω dynamic resistance up to 0.5 mA test current - critical for minimizing AC ripple in low-current references.
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 tight regulation window for 5 V system references |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - sets maximum continuous DC power before thermal shutdown risk |
| Dynamic Resistance (rd) | 150 Ω max at IZ = 0.5 mA - determines AC impedance seen by noise-sensitive circuit nodes |
| Reverse Current (IR) | 1 μA max at VR = 2.0 V - ensures minimal leakage-induced error in high-impedance bias networks |
| Junction Temperature (Tj) | 175°C max - enables operation in industrial environments with localized heating |
| Zener Noise Level | ≈1/3–1/10 of HZ-series - directly reduces broadband voltage noise in precision analog front-ends |
Pinout & Package
Package: DO-35 glass axial lead package (JEITA code GRZZ0002ZB-A), orange body color, navy blue cathode band, 2.0 mm diameter × 26.0 mm length, 0.13 g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-side terminal of reverse-biased junction | Connected to regulated voltage rail; polarity must be observed to avoid forward conduction |
| 2 (Anode) | Low-side terminal / reference node | Typically tied to ground or common return; establishes reference potential for zener drop |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise performance | Reduces broadband voltage noise in precision references by factor of 3–10 vs. legacy HZ series |
| Low dynamic impedance | 150 Ω max ensures minimal AC voltage deviation under small-signal load transients |
| Stable zener voltage tolerance | ±0.3 V window supports accurate 5 V rail regulation without post-calibration |
| High power density | 400 mW in DO-35 enables robust regulation in space-constrained PCB layouts |
Applications
| Instrumentation Reference | Sensor Signal Conditioning |
|---|---|
Use Scenario: Providing stable 5.5 V reference for 16-bit SAR ADC in portable multimeter. IC Role / Device Role / Timing Role: Shunt voltage reference establishing precise input full-scale range. Use Value: Low noise and tight VZ tolerance minimize integral nonlinearity (INL) errors below ±0.5 LSB. | Use Scenario: Biasing bridge amplifier in MEMS pressure sensor module. IC Role / Device Role / Timing Role: Low-drift DC bias source for op-amp input stage. Use Value: Negative temperature coefficient partially compensates for bridge element drift, improving overall thermal stability. |
| Low-Power IoT Node Regulator | Analog Front-End Protection |
Use Scenario: Generating clean 5.5 V supply for ultra-low-power microcontroller ADC subsystem. IC Role / Device Role / Timing Role: Standalone shunt regulator feeding low-current analog domain. Use Value: 1 μA max leakage prevents battery drain in sleep mode while maintaining reference readiness. | Use Scenario: Clamping ESD transients on analog input lines of medical-grade EEG amplifier. IC Role / Device Role / Timing Role: Low-capacitance overvoltage protector with defined clamping threshold. Use Value: 150 Ω rd ensures fast transient response and minimal overshoot during 2 kV HBM events. |
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 |
|---|---|---|---|
| 1N5231B | Zener voltage 5.1 V ±5%, rd = 17 Ω @ 20 mA, higher test current, no low-noise specification | Better dynamic regulation at higher currents; unsuitable for sub-mA precision references | Prefer HZ5A3J-E when noise < 10 nV/√Hz and IZ < 1 mA are required |
| BZX55-C5V6 | Zener voltage 5.6 V ±5%, rd = 40 Ω @ 5 mA, DO-35 package, no documented noise reduction | Higher power handling at 500 mW, but lacks low-noise optimization for sensitive analog stages | Choose HZ5A3J-E where reference noise floor dominates system SNR budget |
Compared with 1N5231B and BZX55-C5V6, the HZ5A3J-E delivers superior low-noise performance and tighter VZ tolerance at low test current, making it optimal for precision, low-power analog references - though its higher dynamic impedance requires careful bias network design.
Availability
HZ5A3J-E is available at Aetrix Electronics and suitable for instrumentation reference design, sensor signal conditioning, and low-power IoT node regulation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for HZ5A3J-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 Zener diodes were designed specifically for low-noise, high-stability voltage reference applications in precision analog systems - emphasizing reduced broadband noise, tight VZ tolerance, and predictable temperature behavior.
FAQ
What is the exact zener voltage range specified for HZ5A3J-E?
The HZ5A3J-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 tolerance window supports accurate 5 V system referencing without trimming. The value is DC-tested per REJ03G0182-0300 Rev.3.00, and applies strictly to the HZ5A3J-E variant within the HZ-L family.
Does HZ5A3J-E support operation above 25°C ambient temperature?
Yes, the HZ5A3J-E is rated for storage from −55°C to +175°C and junction temperature up to 175°C. Its power dissipation derates linearly above 25°C ambient - approximately 3.2 mW/°C reduction - allowing safe operation up to ~75°C ambient at full 400 mW rating. Thermal design must account for PCB copper area and airflow per Figure 3 in the HZ-L datasheet.
How does the noise performance of HZ5A3J-E compare to standard Zener diodes?
The HZ5A3J-E achieves approximately 1/3 to 1/10 the broadband noise level of conventional HZ-series Zeners due to optimized silicon planar process and junction geometry. This is confirmed in the "Features" section of REJ03G0182-0300 and validated via spectral noise measurements in Renesas application notes - critical for ADC reference and low-level sensor amplification where noise floor directly limits resolution.
Is HZ5A3J-E compatible with automated PCB assembly processes?
Yes, the HZ5A3J-E uses a standard DO-35 axial glass package (JEITA GRZZ0002ZB-A) with 2.0 mm body diameter and 26 mm length, compatible with wave soldering, selective soldering, and hand assembly. Lead spacing is not fixed, but typical pitch accommodates 0.5–1.0 mm lead forming. Reflow is not recommended due to glass-to-metal seal thermal limits.
What is the maximum reverse leakage current for HZ5A3J-E?
The HZ5A3J-E specifies a maximum reverse leakage current (IR) of 1 μA at VR = 2.0 V and Ta = 25°C. This low leakage supports high-impedance bias networks and minimizes error in precision current sources or voltage dividers. Leakage increases with temperature but remains below 10 μA up to 100°C per characterization curves in the HZ-L series documentation.
HZ5A3J-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:
- -
HZ5A3J-E FAQ
1.How can I place an order for HZ5A3J-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ5A3J-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 HZ5A3J-E reliable?
The price and inventory of HZ5A3J-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ5A3J-E is usually 5 days.
3.What payment methods are accepted for HZ5A3J-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ5A3J-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ5A3J-E?
HZ5A3J-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ5A3J-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 HZ5A3J-E?
For technical support, including HZ5A3J-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ5A3J-E requirements.
6.How does Aetrix verify that HZ5A3J-E is sourced from the original manufacturer or authorized distributors?
All HZ5A3J-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 HZ5A3J-E meets industry standards.
7.What is the process for return or replacement of HZ5A3J-E?
All HZ5A3J-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ5A3J-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 HZ5A3J-E part is unused and in its original packaging.
Return procedure for HZ5A3J-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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