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Renesas HZ5HA1TA
- Part No.:
- HZ5HA1TA
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ5HA1TA.pdf
- Description:
- DIODE ZENER
- Quantity:
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- Shipping:
Inventory:10,000
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Product details
Overview
HZ5HA1TA from Renesas is a silicon planar Zener diode engineered for low-noise voltage regulation in precision analog circuits, featuring a nominal zener voltage of 5.2 V (min) to 5.5 V (max), 400 mW power dissipation, 150 Ω dynamic resistance at 0.5 mA test current, and DO-35 glass package with orange body and navy blue cathode band.
For engineers reviewing the HZ5HA1TA datasheet, HZ5HA1TA pinout, HZ5HA1TA application, or HZ5HA1TA equivalent, this device is selected for noise-sensitive reference design, low-drift power supply stabilization, and high-stability biasing where zener impedance and temperature coefficient are critical selection criteria.
Technical Context
The HZ5HA1TA operates as a two-terminal voltage reference diode with reverse-biased zener breakdown behavior, optimized for DC-regulated applications requiring low thermal drift and minimal broadband noise. Its zener voltage is specified at 0.5 mA test current under DC conditions, with leakage current limited to ≤1 μA at VR = 2.0 V.
Designed for stable operation up to 175°C junction temperature, it exhibits a zener voltage temperature coefficient of approximately −0.08 %/°C (−4 mV/°C) near 5.2–5.5 V, consistent with low-voltage zener devices in the HZ-L series, and maintains low dynamic impedance across its rated current range.
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 regulation window for 5 V reference systems |
| 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 Leakage (IR) | ≤1 μA at VR = 2.0 V - preserves accuracy in high-impedance bias networks |
| Junction Temperature (Tj) | −55°C to +175°C - enables deployment in industrial and automotive under-hood environments |
| Zener Impedance Tempco | ≈−0.08 %/°C - provides predictable, low-drift behavior over temperature for calibration-critical designs |
Pinout & Package
Package: DO-35 glass axial lead package (JEITA code GRZZ0002ZB-A), orange body color, navy blue cathode band, 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) | High-side terminal for reverse-bias connection | Connected to regulated positive rail; polarity marking essential for correct orientation in shunt regulator topology |
| 2 (Anode) | Low-side terminal, typically grounded or tied to lower potential | Serves as reference node; must maintain low-impedance path to ground for stable zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Noise performance | Approximately 1/3–1/10 lower noise than standard HZ-series diodes - directly improves SNR in audio preamps and sensor front-ends |
| Low zener impedance | 150 Ω max at 0.5 mA - minimizes AC ripple coupling into reference nodes |
| Wide operating temperature | −55°C to +175°C junction range - supports reliability in unregulated thermal environments |
| Precision voltage tolerance | ±0.15 V total spread (5.2–5.5 V) - enables tighter tolerance selection without external trimming |
Applications
| Instrumentation Reference | Low-Noise Audio Biasing |
|---|---|
Use Scenario: Precision voltage reference for 16-bit ADC/DAC biasing in portable multimeters and data loggers. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 5.2–5.5 V node for analog front-end circuitry. Use Value: Low dynamic resistance and sub-μA leakage ensure <0.01% full-scale error contribution over temperature and time. | Use Scenario: DC bias generation for JFET-input op-amps and microphone preamplifiers. IC Role / Device Role / Timing Role: Low-noise zener element establishing quiet, stable gate bias voltage. Use Value: 1/3–1/10 lower diode noise vs. legacy HZ series directly reduces audible hiss in audio signal paths. |
| Industrial Sensor Excitation | Embedded Power Monitor Reference |
Use Scenario: Excitation voltage source for strain gauge bridges and RTD interfaces in PLC analog input modules. IC Role / Device Role / Timing Role: Stable shunt reference supplying constant current through bridge arms. Use Value: −0.08 %/°C tempco and 400 mW rating enable ±0.1% excitation stability across −40°C to +85°C ambient. | Use Scenario: Calibration reference for on-board voltage monitoring in telecom power supplies and server PMBus controllers. IC Role / Device Role / Timing Role: Primary voltage reference for ADC input scaling and fault threshold detection. Use Value: Tight 5.2–5.5 V tolerance and low leakage allow single-point calibration with <0.5% system-level error budget. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX55C5V1 (ON Semiconductor) | 5.1 V nominal, 600 mW Pd, 600 Ω rd, DO-35 package | Higher dynamic resistance and wider VZ tolerance (±5%) - less suitable for precision references | Select when cost sensitivity outweighs noise and impedance requirements |
| MMSZ5222BS (Diodes Inc.) | 5.1 V nominal, SOD-123 surface-mount, 500 mW Pd, 170 Ω rd | Surface-mount only; lacks low-noise optimization and DO-35 axial mechanical robustness | Choose for space-constrained PCBs where reflow compatibility is mandatory |
Compared with BZX55C5V1 and MMSZ5222BS, the HZ5HA1TA delivers superior noise performance and lower dynamic impedance in an axial-leaded DO-35 package, making it preferred for high-fidelity analog references where thermal stability and low-frequency noise dominate design constraints.
Availability
HZ5HA1TA is available at Aetrix Electronics and suitable for instrumentation reference, low-noise audio biasing, and industrial sensor excitation requiring stable component supply with traceable sourcing and long-term lifecycle support.
Supply support for HZ5HA1TA 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 and power devices, and system-on-chip solutions 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 diode noise, tight voltage tolerance, and wide temperature operation.
FAQ
What is the exact zener voltage range for HZ5HA1TA?
The HZ5HA1TA has a guaranteed zener voltage range of 5.2 V minimum to 5.5 V maximum when tested at IZ = 0.5 mA under DC conditions, per Renesas document REJ03G0182-0300 Rev.3.00. This 0.3 V span reflects factory binning for tight-tolerance 5 V reference use, and the HZ5HA1TA must be operated within this range to meet its specified dynamic resistance and temperature coefficient.
Is HZ5HA1TA suitable for surface-mount assembly?
No, the HZ5HA1TA uses a DO-35 axial glass package with 26 mm lead length and is intended for through-hole mounting only. It is not compatible with reflow or wave soldering processes. For surface-mount alternatives, consider the MMSZ5222BS or similar SOD-123 packaged Zeners - but note that the HZ5HA1TA itself requires manual or selective soldering in axial configurations.
What is the maximum reverse leakage current for HZ5HA1TA?
The HZ5HA1TA specifies a maximum reverse leakage current (IR) of 1 μA at VR = 2.0 V, measured at Ta = 25°C. This low leakage supports high-impedance reference networks and minimizes error in precision biasing circuits. The HZ5HA1TA maintains this specification across its full storage temperature range (−55°C to +175°C), though actual leakage increases exponentially above 25°C.
Does HZ5HA1TA have a documented temperature coefficient?
Yes, the HZ5HA1TA exhibits a zener voltage temperature coefficient (γZ) of approximately −0.08 %/°C (or −4 mV/°C) near its 5.2–5.5 V operating point, consistent with low-voltage zener devices in the HZ-L series. This value is derived from Figure 2 in the Renesas datasheet REJ03G0182-0300 and applies to the HZ5HA1TA specifically within its rated current and temperature range.
Can HZ5HA1TA replace standard HZ-series Zener diodes directly?
The HZ5HA1TA is a member of the enhanced HZ-L series and offers significantly lower noise (1/3–1/10 of standard HZ) and tighter voltage tolerance, but shares identical DO-35 packaging and pinout with legacy HZ parts. As a result, the HZ5HA1TA can serve as a drop-in upgrade in existing designs where improved noise and stability are required - however, its distinct VZ range (5.2–5.5 V) means verification against original circuit bias points is necessary before substitution.
HZ5HA1TA 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:
- -
HZ5HA1TA FAQ
1.How can I place an order for HZ5HA1TA through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ5HA1TA 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 HZ5HA1TA reliable?
The price and inventory of HZ5HA1TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ5HA1TA is usually 5 days.
3.What payment methods are accepted for HZ5HA1TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ5HA1TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ5HA1TA?
HZ5HA1TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ5HA1TA 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 HZ5HA1TA?
For technical support, including HZ5HA1TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ5HA1TA requirements.
6.How does Aetrix verify that HZ5HA1TA is sourced from the original manufacturer or authorized distributors?
All HZ5HA1TA 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 HZ5HA1TA meets industry standards.
7.What is the process for return or replacement of HZ5HA1TA?
All HZ5HA1TA units undergo pre-shipment inspection (PSI). If there is an issue with HZ5HA1TA, 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 HZ5HA1TA part is unused and in its original packaging.
Return procedure for HZ5HA1TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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