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Renesas HZ5A3JTA-E
- Part No.:
- HZ5A3JTA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ5A3JTA-E.pdf
- Description:
- DIODE ZENER 0.5W
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
HZ5A3JTA-E from Renesas is a silicon planar Zener diode optimized for low-noise voltage reference and stabilization in precision analog circuits, featuring a nominal zener voltage of 5.6 V (min 5.4 V, max 5.7 V), 400 mW power dissipation, <60 Ω dynamic impedance at 0.5 mA, and noise level ~1/3–1/10 that of standard HZ-series diodes. It is used in high-stability power supplies, sensor biasing, and ADC reference circuits.
For engineers reviewing the HZ5A3JTA-E datasheet, HZ5A3JTA-E pinout, HZ5A3JTA-E application, or HZ5A3JTA-E equivalent, key selection criteria include its low-noise performance, tight zener voltage tolerance, DO-35 package compatibility, and thermal stability across −55°C to +175°C operating range.
Technical Context
The HZ5A3JTA-E employs a silicon planar junction structure with controlled doping and geometry to minimize generation-recombination noise. Its zener voltage is specified at 0.5 mA test current, with dynamic resistance measured under DC conditions and leakage current capped at 1 μA at VR = 2.0 V.
Designed for low-noise analog references, it exhibits a zener voltage temperature coefficient of approximately −0.02 %/°C near 5.6 V (per Fig.2), and derates linearly to 0 mW at 175°C ambient per the published power vs. temperature curve.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.4 V min / 5.7 V max at IZ = 0.5 mA - ensures stable 5.6 V nominal reference with ±0.15 V tolerance for precision biasing |
| Dynamic Resistance (rd) | ≤60 Ω at IZ = 0.5 mA - maintains low output impedance for minimal voltage shift under load variation |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - supports continuous operation in compact PCB layouts without forced cooling |
| Reverse Leakage (IR) | ≤1 μA at VR = 2.0 V - reduces error current in high-impedance reference nodes |
| Junction Temperature (Tj) | 175°C maximum - enables reliable operation in industrial and automotive under-hood environments |
| Noise Level | ~1/3–1/10 of HZ-series - directly improves SNR in audio preamps, instrumentation amplifiers, and precision DACs |
Pinout & Package
Package: DO-35 (JEITA code GRZZ0002ZB-A), glass axial body with navy blue cathode band; orange body color; 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 breakdown terminal | Connected to higher-potential rail; reverse-biased operation requires cathode at ≥5.4 V above anode |
| 2 (Anode) | Reference ground node | Serves as circuit common; must be held at stable potential to maintain zener regulation accuracy |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise performance | Reduces RMS noise contribution in voltage references, critical for 16-bit+ ADC/DAC systems |
| Tight zener voltage tolerance | ±0.15 V window at 5.6 V enables single-diode use without trimming in mid-precision applications |
| Low dynamic impedance | ≤60 Ω minimizes load-induced voltage droop in current-limited bias networks |
| High junction temperature rating | 175°C Tj allows deployment in thermally constrained enclosures without derating penalties |
Applications
| High-Fidelity Audio Biasing | Precision Sensor Excitation |
|---|---|
Use Scenario: Providing stable, low-noise bias voltage to JFET-input op-amps and discrete transistor stages in microphone preamplifiers. IC Role / Device Role / Timing Role: Zener reference diode establishing fixed DC operating point for gain-setting transistors. Use Value: 1/3–1/10 noise reduction versus standard HZ diodes preserves signal integrity in sub-100 µV input stages. | Use Scenario: Supplying excitation voltage to resistive bridge sensors (e.g., strain gauges, RTDs) in industrial measurement modules. IC Role / Device Role / Timing Role: Low-drift, low-impedance voltage reference source for ratiometric bridge biasing. Use Value: ≤60 Ω dynamic impedance ensures <0.1% output shift under 100 µA load variation across temperature. |
| ADC Reference Stabilization | Industrial Power Monitor Calibration |
Use Scenario: Acting as secondary reference in SAR ADC front-ends where internal reference lacks required long-term stability. IC Role / Device Role / Timing Role: Standalone zener-based voltage reference feeding ADC REF+ pin. Use Value: ±0.15 V zener tolerance and −0.02 %/°C tempco enable <±0.5 LSB drift over 0–70°C ambient. | Use Scenario: Calibrating voltage-sense dividers in DIN-rail power monitors operating in uncontrolled cabinet environments. IC Role / Device Role / Timing Role: Primary voltage reference for analog front-end gain calibration and offset nulling. Use Value: 175°C max junction temperature supports continuous operation at 85°C ambient with full 400 mW derating margin. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C5V6 (Nexperia) | 600 mW Pd, 80 Ω rd at 5 mA, higher noise, SOT-23 package | Surface-mount only; unsuitable for through-hole legacy designs or high-temp axial layouts | Select when board space is constrained and SMT assembly is available |
| 1N5232B (ON Semiconductor) | 500 mW Pd, 17 Ω rd at 20 mA, higher test current, DO-35 but ±5% Vz tolerance (5.32–5.88 V) | Looser voltage tolerance increases need for post-calibration in precision systems | Select when cost sensitivity outweighs noise and tolerance requirements |
Compared with BZX84-C5V6 and 1N5232B, the HZ5A3JTA-E delivers superior noise performance and tighter voltage control in a proven DO-35 industrial package-making it optimal for analog signal chains where reference integrity directly impacts measurement resolution.
Availability
HZ5A3JTA-E is available at Aetrix Electronics and suitable for high-fidelity audio design, precision sensor excitation, and industrial power monitoring requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for HZ5A3JTA-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 leader delivering microcontrollers, analog power, and mixed-signal solutions for automotive, industrial, and infrastructure markets.
The HZ-L Series was developed specifically for low-noise voltage reference applications demanding tighter zener voltage tolerance, lower dynamic impedance, and reduced thermal drift than legacy HZ diodes-targeting precision analog subsystems in test equipment and industrial sensing.
FAQ
What is the nominal zener voltage of the HZ5A3JTA-E and how tightly is it specified?
The HZ5A3JTA-E has a nominal zener voltage of 5.6 V, with a guaranteed range of 5.4 V minimum to 5.7 V maximum when tested at 0.5 mA. This ±0.15 V tolerance supports precision biasing without external trimming and is tighter than standard Zener diodes like the 1N5232B, which offers ±5% (±0.28 V) tolerance at the same nominal voltage. The specification is confirmed in the Renesas REJ03G0182-0300 datasheet, Page 2.
Does the HZ5A3JTA-E support operation at elevated temperatures, and what is its maximum junction temperature?
Yes, the HZ5A3JTA-E is rated for continuous operation up to a maximum junction temperature of 175°C, with storage temperature spanning −55°C to +175°C. Its power dissipation derates linearly from 400 mW at 25°C to zero at 175°C, enabling reliable use in industrial enclosures and automotive under-hood applications. This thermal capability is documented in the Absolute Maximum Ratings table on Page 2 of the REJ03G0182-0300 datasheet.
How does the noise performance of the HZ5A3JTA-E compare to standard Zener diodes?
The HZ5A3JTA-E achieves approximately 1/3 to 1/10 the noise level of conventional HZ-series Zener diodes, as explicitly stated in the Features section of the REJ03G0182-0300 datasheet. This ultra-low noise is achieved via optimized silicon planar junction design and process control, making the HZ5A3JTA-E especially valuable in high-SNR applications such as microphone preamplifiers and precision data acquisition front-ends where reference noise directly limits system resolution.
What package type and pin configuration does the HZ5A3JTA-E use?
The HZ5A3JTA-E uses the DO-35 axial glass package (JEITA code GRZZ0002ZB-A), with a navy blue cathode band marking Pin 1 (cathode) and orange body color. Pin 2 is the anode. The package conforms to SC-40 mechanical dimensions: 26.0 mm length, 2.0 mm diameter, and 0.5 mm lead diameter. This information is verified in the Package Dimensions section on Page 5 of the REJ03G0182-0300 datasheet.
Is the HZ5A3JTA-E suitable for use as a voltage reference in precision ADC circuits?
Yes, the HZ5A3JTA-E is well-suited for ADC reference applications due to its low dynamic resistance (≤60 Ω), tight zener voltage tolerance (±0.15 V), and low temperature coefficient (~−0.02 %/°C). These characteristics ensure minimal voltage shift under varying load and temperature-critical for maintaining ADC linearity and reducing integral nonlinearity (INL) errors. Its low-noise profile further prevents added quantization uncertainty in high-resolution converters.
HZ5A3JTA-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:
- -
HZ5A3JTA-E FAQ
1.How can I place an order for HZ5A3JTA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ5A3JTA-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 HZ5A3JTA-E reliable?
The price and inventory of HZ5A3JTA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ5A3JTA-E is usually 5 days.
3.What payment methods are accepted for HZ5A3JTA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ5A3JTA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ5A3JTA-E?
HZ5A3JTA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ5A3JTA-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 HZ5A3JTA-E?
For technical support, including HZ5A3JTA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ5A3JTA-E requirements.
6.How does Aetrix verify that HZ5A3JTA-E is sourced from the original manufacturer or authorized distributors?
All HZ5A3JTA-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 HZ5A3JTA-E meets industry standards.
7.What is the process for return or replacement of HZ5A3JTA-E?
All HZ5A3JTA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ5A3JTA-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 HZ5A3JTA-E part is unused and in its original packaging.
Return procedure for HZ5A3JTA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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