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Renesas HZ3A2JTA-E
- Part No.:
- HZ3A2JTA-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ3A2JTA-E.pdf
- Description:
- DIODE ZENER 0.5W
- Quantity:
- Payment:
- Shipping:
Inventory:15,000
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Product details
Overview
HZ3A2JTA-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 5.3 V, 400 mW power dissipation, <60 Ω dynamic impedance at 0.5 mA, and DO-35 glass package with navy-blue cathode band. It serves as a stable reference in low-drift power supplies and sensor biasing networks.
For engineers reviewing the HZ3A2JTA-E datasheet, HZ3A2JTA-E pinout, HZ3A2JTA-E application, or HZ3A2JTA-E equivalent, key selection criteria include zener voltage tolerance (±0.3 V), low noise performance relative to legacy HZ series, thermal coefficient behavior below 7 V, and compatibility with through-hole PCB assembly using standard DO-35 footprint.
Technical Context
The HZ3A2JTA-E operates as a two-terminal shunt regulator with DC-tested zener breakdown at 5.3 V (min 5.3 V, max 5.6 V) under 0.5 mA test current. Its low dynamic resistance (<60 Ω) and low leakage current (<1 μA at VR = 2.0 V) support high-precision voltage referencing in low-power analog front-ends.
Designed for ambient temperatures from −55°C to +175°C, it exhibits a negative temperature coefficient typical of sub-6 V Zeners, with γZ ≈ −0.08 %/°C per Fig.2, making it suitable for applications where drift compensation is managed externally or via circuit topology.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.3 V min / 5.6 V max at IZ = 0.5 mA - defines tight regulation window for 5 V reference designs |
| Power Dissipation (Pd) | 400 mW - supports continuous operation up to ~75 mA at 5.3 V without heatsinking |
| Dynamic Resistance (rd) | <60 Ω at IZ = 0.5 mA - ensures minimal output voltage variation under load transients |
| Reverse Leakage (IR) | <1 μA at VR = 2.0 V - reduces error contribution in high-impedance bias networks |
| Junction Temperature (Tj) | 175 °C maximum - enables use in automotive under-hood or industrial control environments |
| Noise Level | ~1/3–1/10 of standard HZ series - critical for audio preamps, ADC references, and low-noise op-amp circuits |
Pinout & Package
Package: DO-35 glass axial lead package (JEITA code GRZZ0002ZB-A), orange body with navy-blue cathode band; leads tinned, mass 0.13 g, dimensions per SC-40 standard (φD = 2.0 mm, L = 26.0 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to regulated voltage node; polarity must be observed to avoid forward conduction |
| 2 (Anode) | Reference ground return | Completes shunt path; tied to system ground or low-impedance return in feedback loops |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener structure | Reduces broadband voltage noise by factor of 3–10 vs. HZ-series, enabling cleaner signal chains |
| Tight VZ tolerance group | A2 grade (5.3–5.6 V) allows binning for matched reference pairs in differential circuits |
| Stable low-current regulation | Specified down to 0.5 mA IZ, supporting ultra-low-power standby references |
| High thermal reliability | 175 °C Tj rating and −55 °C to +175 °C storage range suit extended-temperature deployments |
Applications
| Audio Signal Conditioning | Precision Sensor Biasing |
|---|---|
Use Scenario: Low-noise microphone preamplifier stage requiring stable 5 V reference for FET gate bias and op-amp rails. IC Role / Device Role / Timing Role: Shunt voltage reference providing low-drift, low-noise DC bias point for JFET input stages. Use Value: Achieves >90 dB SNR by suppressing zener-induced broadband noise that would otherwise modulate audio signals. | Use Scenario: Bridge-based pressure sensor interface where excitation voltage stability directly impacts measurement accuracy. IC Role / Device Role / Timing Role: Primary voltage reference for Wheatstone bridge excitation and instrumentation amplifier gain-setting resistors. Use Value: Maintains <0.05% full-scale error over temperature due to tight VZ tolerance and predictable γZ. |
| Industrial PLC Analog Input | Medical Instrumentation Reference |
Use Scenario: 16-bit ADC reference supply in programmable logic controller modules operating in electrically noisy factory environments. IC Role / Device Role / Timing Role: Low-impedance shunt regulator stabilizing internal 5 V rail feeding SAR ADC reference buffer. Use Value: Enables ±1 LSB integral nonlinearity by limiting reference ripple to <100 μVpp across 10 Hz–100 kHz. | Use Scenario: ECG front-end circuit requiring ultra-stable, low-noise bias for high-gain instrumentation amplifiers. IC Role / Device Role / Timing Role: Dual-role device: provides both analog supply rail regulation and precision reference for calibration DACs. Use Value: Meets IEC 60601-1 leakage current limits while delivering <20 nV/√Hz noise density below 10 kHz. |
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-C5V1 (Diodes Inc.) | VZ = 5.1 V ±5%, rd = 60 Ω min, Pd = 300 mW, SOT-23 package | SMT-only; higher VZ tolerance and lower power limit reduce suitability for high-accuracy linear regulators | Select when board space constraints mandate SMT and ±5% VZ is acceptable |
| 1N5232B (ON Semiconductor) | VZ = 5.1 V ±5%, rd = 17 Ω typ, Pd = 500 mW, DO-35 package, higher noise than HZ-L series | Higher noise floor limits use in audio/sensor apps; tighter rd benefits high-current regulation | Prefer for cost-sensitive 5 V supplies where noise is secondary to regulation stiffness |
Compared with BZX84-C5V1 and 1N5232B, the HZ3A2JTA-E delivers superior noise performance and tighter VZ binning in the same DO-35 form factor, making it the optimal choice for analog signal integrity-critical designs despite its premium specification tier.
Availability
HZ3A2JTA-E is available at Aetrix Electronics and suitable for precision analog power supplies, sensor excitation circuits, and medical-grade instrumentation requiring stable component supply with traceable lot history and long-term lifecycle assurance.
Supply support for HZ3A2JTA-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 specializing in microcontrollers, analog power devices, and timing solutions, with core expertise in automotive, industrial, and infrastructure markets.
The HZ-L Series was developed specifically to address low-noise voltage reference needs in high-fidelity analog systems, extending Renesas' legacy Zener portfolio with enhanced noise suppression and tighter parametric control.
FAQ
What is the exact zener voltage range specified for HZ3A2JTA-E?
The HZ3A2JTA-E has a guaranteed zener voltage range of 5.3 V minimum to 5.6 V maximum when tested at IZ = 0.5 mA and Ta = 25°C. This A2-grade binning enables precise matching in dual-reference or differential configurations. The value is DC-tested per Note 1 on page 2 of the official Renesas datasheet REJ03G0182-0300 Rev.3.00.
Does HZ3A2JTA-E support operation above 100°C ambient temperature?
Yes, the HZ3A2JTA-E is rated for continuous operation up to 175°C junction temperature and has a storage temperature range of −55°C to +175°C. Its DO-35 package and silicon planar construction allow reliable function in extended-temperature industrial environments, provided PCB layout maintains adequate thermal relief and power dissipation stays within 400 mW limits.
How does the noise performance of HZ3A2JTA-E compare to standard Zener diodes?
The HZ3A2JTA-E achieves approximately 1/3 to 1/10 the broadband voltage noise of conventional HZ-series Zeners, as stated in the "Features" section of the Renesas datasheet. This reduction stems from proprietary silicon processing and planar junction optimization-critical for applications like audio preamps and precision ADC references where noise directly impacts signal fidelity.
Is HZ3A2JTA-E compatible with automated through-hole insertion equipment?
Yes, the HZ3A2JTA-E uses the industry-standard DO-35 axial package (JEITA code GRZZ0002ZB-A) with 2.0 mm diameter body and 26.0 mm length, fully compatible with standard wave-solder and auto-insertion tooling. Lead spacing and tinning meet IPC-J-STD-002/003 requirements, and the navy-blue cathode band provides unambiguous polarity identification during placement.
What is the dynamic resistance specification for HZ3A2JTA-E and why does it matter?
The HZ3A2JTA-E has a maximum dynamic resistance of 60 Ω at IZ = 0.5 mA. This parameter quantifies how much the zener voltage changes under small-signal AC load variations; lower rd means better regulation stiffness and reduced output ripple in sensitive analog circuits-especially important when driving high-impedance nodes like op-amp inputs or ADC reference pins.
HZ3A2JTA-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:
- -
HZ3A2JTA-E FAQ
1.How can I place an order for HZ3A2JTA-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ3A2JTA-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 HZ3A2JTA-E reliable?
The price and inventory of HZ3A2JTA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ3A2JTA-E is usually 5 days.
3.What payment methods are accepted for HZ3A2JTA-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ3A2JTA-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ3A2JTA-E?
HZ3A2JTA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ3A2JTA-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 HZ3A2JTA-E?
For technical support, including HZ3A2JTA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ3A2JTA-E requirements.
6.How does Aetrix verify that HZ3A2JTA-E is sourced from the original manufacturer or authorized distributors?
All HZ3A2JTA-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 HZ3A2JTA-E meets industry standards.
7.What is the process for return or replacement of HZ3A2JTA-E?
All HZ3A2JTA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ3A2JTA-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 HZ3A2JTA-E part is unused and in its original packaging.
Return procedure for HZ3A2JTA-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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