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Renesas HZ6A1-90
- Part No.:
- HZ6A1-90
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ6A1-90.pdf
- Description:
- DIODE ZENER FOR STABIL POWER
- Quantity:
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Inventory:14,380
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Product details
Overview
HZ6A1-90 from Renesas is a silicon planar Zener diode engineered for low-noise voltage regulation in precision analog circuits, with a nominal zener voltage of 5.2–5.5 V at 0.5 mA test current, 400 mW power dissipation, and dynamic resistance of 150 Ω - deployed in stabilized power supplies for instrumentation and sensor signal conditioning.
For engineers reviewing the HZ6A1-90 datasheet, HZ6A1-90 pinout, HZ6A1-90 application, or HZ6A1-90 equivalent, this page delivers verified electrical specs, DO-35 package mapping, cathode/anode terminal roles, low-noise design context, and two validated alternative parts for supply continuity planning.
Technical Context
The HZ6A1-90 operates as a DC-stabilized reference diode with zener breakdown mechanism, optimized for low noise (1/3–1/10 lower than standard HZ series) and low leakage. Its 150 Ω dynamic resistance at 0.5 mA ensures stable regulation under light-load conditions typical in biasing and reference circuits.
Designed for ambient temperatures from −55°C to +175°C, it maintains zener voltage stability across industrial environments, with a temperature coefficient near zero for its 5.2–5.5 V range - confirmed by Figure 2 in REJ03G0182-0300 Rev.3.00.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.2–5.5 V at IZ = 0.5 mA - defines precise DC reference level for analog front-ends. |
| Power Dissipation (Pd) | 400 mW - supports continuous operation in compact PCB layouts without forced cooling. |
| Dynamic Resistance (rd) | 150 Ω max at IZ = 0.5 mA - ensures minimal output voltage variation under load transients. |
| Reverse Current (IR) | 1 μA max at VR = 2.0 V - enables high-impedance bias networks with negligible leakage error. |
| Junction Temperature (Tj) | 175°C - allows reliable operation in high-temperature industrial enclosures and automotive under-hood proximity. |
| Package | DO-35 (JEITA GRZZ0002ZB-A) - through-hole glass-passivated body with orange casing and navy-blue cathode band. |
Pinout & Package
Package: DO-35 glass axial-leaded package per JEITA code GRZZ0002ZB-A; body color orange; cathode identified by navy-blue band; mass 0.13 g; dimensions per SC-40 outline (L = 26.0 mm, φD = 2.0 mm, φb = 0.5 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener voltage reference node | Connected to regulated output rail; polarity must be observed to avoid forward conduction. |
| 2 (Anode) | Reference return path | Typically tied to system ground or negative rail; establishes reverse-bias condition for zener operation. |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise zener operation | Diode noise reduced to 1/3–1/10 of standard HZ series - critical for audio preamps and precision ADC references. |
| Stable low-voltage reference | 5.2–5.5 V zener range with near-zero temperature coefficient - minimizes drift in 5 V analog subsystems. |
| High reliability under thermal stress | 175°C max junction temperature and −55°C min storage temperature - qualified for extended-life industrial deployments. |
| Low dynamic impedance | 150 Ω at 0.5 mA - maintains regulation accuracy even with varying source impedance in discrete regulator designs. |
Applications
| Instrumentation Reference | Sensor Bias Supply |
|---|---|
Use Scenario: Providing stable excitation voltage to strain-gauge bridges in load cells and pressure transducers. IC Role / Device Role / Timing Role: Zener diode acting as low-drift, low-noise voltage reference for ratiometric measurement circuits. Use Value: 150 Ω dynamic resistance and <1 μA leakage preserve bridge balance accuracy and minimize offset drift over temperature. |
Use Scenario: Supplying bias current to MEMS accelerometers and RTD interface amplifiers in environmental monitoring nodes. IC Role / Device Role / Timing Role: Discrete zener regulating local 5.3 V rail independent of main system supply variations. Use Value: Low noise and 400 mW dissipation enable clean, self-contained bias generation without LDO overhead. |
| Audio Signal Conditioning | Industrial PLC Analog Input |
Use Scenario: Setting reference levels in microphone preamplifier gain stages and active filter DC offsets. IC Role / Device Role / Timing Role: Low-noise zener establishing quiet DC operating points for op-amp inputs and feedback networks. Use Value: Noise reduction to 1/3–1/10 of standard HZ series directly lowers audible hiss in high-gain audio paths. |
Use Scenario: Calibrating 4–20 mA transmitter output stages and isolating analog input protection circuits in factory automation controllers. IC Role / Device Role / Timing Role: Precision shunt reference anchoring current-loop compliance voltage and overvoltage clamp thresholds. Use Value: Tight 5.2–5.5 V tolerance and 175°C Tj rating ensure long-term calibration stability in uncooled control cabinets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4728A | Zener voltage 3.3 V ±5%, Pd = 1 W, rd = 10 Ω, DO-41 package - higher power but fixed 3.3 V output. | Used where higher current drive or different voltage level is required; not suitable for 5.2–5.5 V precision reference needs. | Select only if system requires 3.3 V reference and >400 mW headroom; verify DO-41 footprint compatibility. |
| BZX55C5V1 | Zener voltage 4.8–5.4 V, Pd = 500 mW, rd = 60 Ω, DO-35 package - tighter VZ tolerance but no published noise spec. | Applicable where lower dynamic impedance is prioritized over documented low-noise performance. | Prefer when noise is secondary to regulation stiffness; confirm BZX55C5V1's unspecified noise meets system SNR targets. |
Compared with HZ6A1-90, the 1N4728A offers higher power and lower rd but at a non-matching voltage and larger package, while the BZX55C5V1 matches the DO-35 form factor and approximates the voltage range but lacks Renesas' certified low-noise advantage for sensitive analog signal chains.
Availability
HZ6A1-90 is available at Aetrix Electronics and suitable for stabilized power supplies, precision instrumentation references, sensor bias networks, and industrial analog input modules requiring stable component supply with full traceability and long-lifecycle support.
Supply support for HZ6A1-90 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, including HZ6A1-90, was developed specifically for low-noise voltage reference applications in high-fidelity analog systems where conventional zener diodes introduce unacceptable signal degradation.
FAQ
What is the exact zener voltage range for HZ6A1-90?
The HZ6A1-90 has a guaranteed zener voltage range of 5.2 V to 5.5 V when tested at IZ = 0.5 mA, as specified in the Electrical Characteristics table on page 2 of REJ03G0182-0300 Rev.3.00. This range reflects unit-to-unit manufacturing tolerance and is measured under DC conditions - no AC or pulse testing applies.
Is HZ6A1-90 compatible with standard DO-35 footprints?
Yes, HZ6A1-90 uses the JEITA-standard DO-35 package (GRZZ0002ZB-A) with defined dimensions: body diameter 2.0 mm, lead diameter 0.5 mm, and overall length 26.0 mm. Its orange body and navy-blue cathode band align with industry-standard DO-35 visual identification - ensuring mechanical and soldering compatibility with existing DO-35 land patterns.
Does HZ6A1-90 have a specified noise performance value?
While an absolute dB or nV/√Hz figure is not published, the HZ6A1-90 datasheet explicitly states its noise level is "approximately 1/3–1/10 lower than the HZ series" - a relative benchmark confirmed across the entire HZ-L family. This improvement stems from proprietary silicon planar processing and is validated in low-noise analog reference applications per Renesas' characterization.
What is the maximum reverse current for HZ6A1-90 at 2.0 V?
The maximum reverse current (IR) for HZ6A1-90 is 1 μA when reverse voltage (VR) is applied at 2.0 V, as listed in the Electrical Characteristics table. This low leakage supports high-impedance reference networks and minimizes error in precision voltage divider configurations used with the HZ6A1-90.
Can HZ6A1-90 operate continuously at 175°C junction temperature?
The HZ6A1-90 is rated for a maximum junction temperature (Tj) of 175°C, but continuous operation at that limit requires derating per Figure 3 (Power Dissipation vs. Ambient Temperature). At 175°C ambient, power dissipation must be reduced to zero; at 70°C ambient, full 400 mW is permitted. Thermal design must ensure actual Tj stays within this absolute maximum.
HZ6A1-90 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:
- -
HZ6A1-90 FAQ
1.How can I place an order for HZ6A1-90 through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ6A1-90 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 HZ6A1-90 reliable?
The price and inventory of HZ6A1-90 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ6A1-90 is usually 5 days.
3.What payment methods are accepted for HZ6A1-90?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ6A1-90 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ6A1-90?
HZ6A1-90 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ6A1-90 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 HZ6A1-90?
For technical support, including HZ6A1-90 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ6A1-90 requirements.
6.How does Aetrix verify that HZ6A1-90 is sourced from the original manufacturer or authorized distributors?
All HZ6A1-90 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 HZ6A1-90 meets industry standards.
7.What is the process for return or replacement of HZ6A1-90?
All HZ6A1-90 units undergo pre-shipment inspection (PSI). If there is an issue with HZ6A1-90, 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 HZ6A1-90 part is unused and in its original packaging.
Return procedure for HZ6A1-90:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ6A1-90 Tags
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