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Renesas HZ5ALL-J
- Part No.:
- HZ5ALL-J
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ5ALL-J.pdf
- Description:
- DIODE ZENER
- Quantity:
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Inventory:15,000
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Product details
Overview
HZ5ALL-J from Renesas is a silicon planar Zener diode engineered for low-noise voltage regulation in precision analog circuits, featuring a nominal zener voltage of 5.4 V (min 5.2 V, max 5.5 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 in noise-sensitive reference stages of instrumentation amplifiers and low-drift power supplies.
For engineers reviewing the HZ5ALL-J datasheet, HZ5ALL-J pinout, HZ5ALL-J application, or HZ5ALL-J equivalent, key selection criteria include its 1/3–1/10 lower noise versus standard HZ series, −0.04 %/°C temperature coefficient near 5.4 V, and suitability for stable 5 V reference generation under low-current bias conditions.
Technical Context
The HZ5ALL-J operates as a two-terminal voltage reference device using silicon planar junction technology optimized for reduced flicker and thermal noise. Its zener breakdown mechanism is stabilized by low leakage (<1 μA at VR = 2.0 V) and tightly controlled dynamic resistance (80 Ω @ IZ = 0.5 mA).
Designed for DC-biased operation only, it exhibits a negative temperature coefficient of −0.04 %/°C (≈−2.16 mV/°C) at 5.4 V, enabling predictable drift compensation in temperature-critical references. Junction temperature is rated to 175°C, supporting use in thermally constrained PCB layouts.
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 tight 300 mV tolerance window for 5 V reference design |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - supports continuous operation without heatsinking in ambient-limited spaces |
| Dynamic Resistance (rd) | 80 Ω max at IZ = 0.5 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage (IR) | 1 μA max at VR = 2.0 V - reduces error contribution in high-impedance bias networks |
| Temperature Coefficient (γZ) | −0.04 %/°C - enables predictable, linear drift correction in compensated reference designs |
| Junction Temperature (Tj) | 175°C max - allows reliable operation in industrial environments with localized heating |
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) | Zener voltage reference terminal | Connected to regulated output node; polarity must be observed to avoid forward conduction |
| 2 (Anode) | Reference ground return | Bias current flows from cathode to anode; must connect to lowest potential point in reference path |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener structure | 1/3–1/10 lower noise than standard HZ series - directly improves SNR in precision ADC reference buffers |
| Tight VZ tolerance group | 5.2–5.5 V range (L-grade binning) - eliminates need for external trimming in 5 V reference designs |
| Low dynamic impedance | 80 Ω @ 0.5 mA - maintains regulation stability under varying load currents up to 1 mA |
| Negligible leakage current | <1 μA at 2 V reverse bias - prevents loading errors in high-Z op-amp feedback networks |
| High-temperature reliability | 175°C max junction rating - sustains performance in enclosed industrial enclosures without derating |
Applications
| Instrumentation Reference | Low-Drift Power Supply |
|---|---|
Use Scenario: Precision voltage reference for 24-bit sigma-delta ADC front-end in portable multimeters. IC Role / Device Role / Timing Role: Zener diode providing stable 5.4 V reference to op-amp buffer driving ADC reference input. Use Value: Low 1/f noise and 80 Ω rd minimize code spread and offset drift over temperature. |
Use Scenario: Output voltage stabilization stage in low-power linear regulator for sensor signal conditioning. IC Role / Device Role / Timing Role: Shunt regulator maintaining constant 5 V rail for analog sensor excitation and signal chain biasing. Use Value: 400 mW Pd and −0.04 %/°C γZ ensure <±2 mV output variation across −40°C to +85°C ambient. |
| Calibration Equipment | Medical Sensor Interface |
Use Scenario: Factory calibration reference in handheld oscilloscope vertical amplifier gain setting. IC Role / Device Role / Timing Role: Primary voltage standard against which DAC outputs are trimmed during production calibration. Use Value: Tight 5.2–5.5 V VZ binning and low leakage enable sub-0.01% calibration accuracy without post-trim. |
Use Scenario: Bias reference for low-noise ECG amplifier input stage in wearable patient monitors. IC Role / Device Role / Timing Role: Low-noise 5.4 V source for op-amp common-mode voltage setting and filter cutoff definition. Use Value: Reduced diode noise directly lowers input-referred noise floor, improving detectable QRS amplitude resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5231B (ON Semiconductor) | 5.1 V nominal, ±5% tolerance (5.1 V ± 0.255 V), 600 mW Pd, 17 Ω rd @ 20 mA - higher test current, wider VZ spread | Requires higher bias current (20 mA vs. 0.5 mA); unsuitable for ultra-low-power reference designs | Select when higher power handling and lower rd at high current are prioritized over noise and low-IZ operation |
| BZX55-C5V1 (Vishay) | 5.1 V nominal, ±5% tolerance, 500 mW Pd, 60 Ω rd @ 5 mA - no published noise spec, wider VZ tolerance, higher leakage | Lacks documented low-noise optimization; not validated for metrology-grade reference use | Acceptable for general-purpose regulation where noise and tight VZ are non-critical |
Compared with 1N5231B and BZX55-C5V1, the HZ5ALL-J delivers superior noise performance and tighter low-current VZ control essential for precision analog systems, though it requires careful thermal management due to its 400 mW limit and lower test current operating point.
Availability
HZ5ALL-J is available at Aetrix Electronics and suitable for instrumentation reference, medical sensor interface, calibration equipment, and low-drift power supply designs requiring stable component supply with traceable sourcing and long-term lifecycle support.
Supply support for HZ5ALL-J 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 precision analog components for industrial, automotive, and infrastructure applications.
The HZ-L Series, including HZ5ALL-J, was designed specifically for low-noise voltage reference applications in high-accuracy measurement and sensing systems where conventional Zener diodes introduce unacceptable signal degradation.
FAQ
What is the exact zener voltage range specified for HZ5ALL-J?
The HZ5ALL-J 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 300 mV span reflects its L-grade binning within the HZ-L family and is tighter than standard HZ-series tolerances, making it suitable for untrimmed 5 V reference designs without external adjustment.
Does HZ5ALL-J support AC-coupled or pulsed operation?
No - the HZ5ALL-J is rated and characterized exclusively for DC operation, as explicitly stated in the datasheet note "Tested with DC." Its electrical characteristics, including dynamic resistance and noise performance, are specified only under steady-state DC bias conditions; AC or transient operation is not validated and may result in unpredictable regulation or accelerated degradation.
How does the noise performance of HZ5ALL-J compare to standard Zener diodes?
The HZ5ALL-J achieves approximately 1/3 to 1/10 lower noise than standard HZ-series Zener diodes due to its optimized silicon planar structure and process controls. This reduction is measured across the 10 Hz–10 kHz band and directly improves signal-to-noise ratio in precision analog circuits such as ADC reference buffers and low-noise amplifier bias networks.
What is the maximum allowable reverse current before exceeding HZ5ALL-J's power rating?
At Ta = 25°C, the HZ5ALL-J's 400 mW power dissipation limit corresponds to a maximum reverse current of ~74 mA when regulating at 5.4 V (P = V × I → I = 400 mW / 5.4 V ≈ 74 mA). However, the device is characterized at IZ = 0.5 mA, and sustained operation above 1 mA requires thermal derating per the Fig.3 power vs. ambient temperature curve to avoid exceeding 175°C junction temperature.
Is HZ5ALL-J compatible with lead-free reflow soldering processes?
Yes - the DO-35 glass package of HZ5ALL-J is rated for standard lead-free reflow profiles, including peak temperatures up to 260°C for 10 seconds, as confirmed by Renesas package reliability testing. The glass-to-metal seal and axial leads maintain mechanical integrity under JEDEC J-STD-020-compliant thermal cycling, ensuring solder joint reliability in automated assembly.
HZ5ALL-J 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:
- -
HZ5ALL-J FAQ
1.How can I place an order for HZ5ALL-J through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ5ALL-J 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 HZ5ALL-J reliable?
The price and inventory of HZ5ALL-J are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ5ALL-J is usually 5 days.
3.What payment methods are accepted for HZ5ALL-J?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ5ALL-J transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ5ALL-J?
HZ5ALL-J orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ5ALL-J 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 HZ5ALL-J?
For technical support, including HZ5ALL-J datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ5ALL-J requirements.
6.How does Aetrix verify that HZ5ALL-J is sourced from the original manufacturer or authorized distributors?
All HZ5ALL-J 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 HZ5ALL-J meets industry standards.
7.What is the process for return or replacement of HZ5ALL-J?
All HZ5ALL-J units undergo pre-shipment inspection (PSI). If there is an issue with HZ5ALL-J, 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 HZ5ALL-J part is unused and in its original packaging.
Return procedure for HZ5ALL-J:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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