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Renesas HZ4A2RE-E
- Part No.:
- HZ4A2RE-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ4A2RE-E.pdf
- Description:
- DIODE ZENER 0.5W
- Quantity:
- Payment:
- Shipping:
Inventory:16,000
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Product details
Overview
HZ4A2RE-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, 80 Ω dynamic impedance at 0.5 mA test current, and DO-35 glass package with navy blue cathode band. It serves in stabilized reference supplies for instrumentation amplifiers and sensor signal conditioning where noise suppression is critical.
For engineers reviewing the HZ4A2RE-E datasheet, HZ4A2RE-E pinout, HZ4A2RE-E application, or HZ4A2RE-E equivalent, key selection criteria include verified low-noise performance (1/3–1/10 lower than standard HZ series), tight zener voltage tolerance (±0.3 V at 5.3 V), thermal coefficient stability, DO-35 mechanical compatibility, and suitability for low-current (<1 mA) precision biasing.
Technical Context
This device operates as a two-terminal shunt voltage regulator with DC-tested zener breakdown characteristics. Its low dynamic resistance (80 Ω) and low leakage current (<1 μA at VR = 2.0 V) enable stable reference generation under light-load conditions typical in op-amp feedback networks and ADC reference buffers.
The HZ4A2RE-E belongs to the HZ-L Series, distinguished by reduced diode noise versus legacy HZ parts and optimized junction design for improved temperature coefficient behavior-exhibiting γZ ≈ −0.02 %/°C near 5.3 V, confirmed in Figure 2 of REJ03G0182-0300.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 5.3 V (min 5.2 V, max 5.5 V at IZ = 0.5 mA); enables precise 5 V system reference with ±3% tolerance |
| Power Dissipation (Pd) | 400 mW (at Ta = 25°C); supports continuous operation in compact PCB layouts without forced cooling |
| Dynamic Resistance (rd) | 80 Ω (max at IZ = 0.5 mA); ensures minimal output voltage variation under load transients in reference circuits |
| Reverse Current (IR) | <1 μA (max at VR = 2.0 V); prevents parasitic loading in high-impedance bias networks |
| Junction Temperature (Tj) | 175°C (absolute max); allows reliable operation in industrial ambient environments up to +125°C with derating |
| Package | DO-35 (JEITA GRZZ0002ZB-A); industry-standard axial leaded glass package with orange body and navy blue cathode band |
Pinout & Package
DO-35 glass axial-leaded package: hermetically sealed, 2.0 mm diameter body, 26.0 mm overall length, 0.5 mm lead diameter, orange body color, navy blue cathode band marking.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (banded end) | Cathode | Connected to regulated output node; reverse-biased terminal during zener operation |
| 2 (unbanded end) | Anode | Connected to circuit ground or common return; establishes reference potential for voltage clamping |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise zener operation | Noise level ~1/3–1/10 that of standard HZ-series diodes-critical for audio preamps and precision DAC references |
| Tight zener voltage tolerance | ±0.3 V over 5.2–5.5 V range at 0.5 mA-reduces calibration overhead in factory-trimmed systems |
| Stable temperature coefficient | γZ ≈ −0.02 %/°C near 5.3 V-minimizes drift in temperature-sensitive measurement front-ends |
| Low leakage current | <1 μA at 2.0 V reverse bias-preserves accuracy in nanoamp-level biasing applications like photodiode transimpedance amps |
Applications
| Instrumentation Amplifier Reference | Sensor Signal Conditioning |
|---|---|
Use Scenario: Providing stable 5.3 V reference for gain-setting resistors and offset nulling in precision instrumentation amplifiers (e.g., AD620, INA128). IC Role / Device Role / Timing Role: Shunt voltage reference establishing fixed bias point for differential input stage and output buffer. Use Value: Low dynamic impedance (80 Ω) and low noise suppress reference-induced errors, enabling <100 nV/√Hz input-referred noise performance. |
Use Scenario: Biasing bridge sensors (e.g., strain gauges, RTDs) in 4-wire Wheatstone configurations requiring stable excitation voltage. IC Role / Device Role / Timing Role: Precision voltage source for sensor excitation, decoupled from supply rail variations via series resistor. Use Value: Tight VZ tolerance (±0.3 V) and low TCR ensure excitation stability within ±0.1% over −40°C to +85°C ambient. |
| ADC Voltage Reference Buffer | Op-Amp Feedback Stabilization |
Use Scenario: Generating clean 5.3 V reference for SAR or delta-sigma ADCs (e.g., ADS1256) where internal reference lacks required PSRR. IC Role / Device Role / Timing Role: External shunt reference feeding buffered reference input; isolates ADC from noisy digital supply domains. Use Value: Sub-1 μA leakage prevents loading of high-impedance reference inputs, preserving ENOB in 24-bit converters. |
Use Scenario: Setting precise closed-loop gain in low-noise op-amp circuits (e.g., OPA211) using zener-based feedback divider. IC Role / Device Role / Timing Role: Stable voltage node defining feedback ratio in non-inverting amplifier configuration. Use Value: Low rd (80 Ω) minimizes gain error sensitivity to load current changes, maintaining ±0.05% gain accuracy across temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4733A (ON Semiconductor) | Zener voltage 5.1 V (±5%), rd = 9 Ω at 49 mA, Pd = 1 W, DO-41 package | Higher test current (49 mA vs. 0.5 mA) increases self-heating; unsuitable for ultra-low-power biasing | Select only when higher power handling and looser voltage tolerance are acceptable |
| BZX55C5V1 (Vishay) | Zener voltage 5.1 V (±5%), rd = 60 Ω at 5 mA, Pd = 500 mW, DO-35 package | Higher leakage (>5 μA at 1 V), no published low-noise characterization, wider VZ spread | Acceptable for general-purpose regulation but not for noise-critical analog references |
Compared with the HZ4A2RE-E, the 1N4733A offers higher power rating but requires significantly higher bias current and lacks low-noise validation, while the BZX55C5V1 shares the DO-35 form factor but exhibits higher leakage and unverified noise performance-making the HZ4A2RE-E uniquely suited for sub-1 μA, low-noise precision reference roles.
Availability
HZ4A2RE-E is available at Aetrix Electronics and suitable for precision analog reference design, sensor excitation circuits, and low-noise instrumentation amplifier biasing requiring stable component supply with traceable Renesas sourcing and long-term lifecycle support.
Supply support for HZ4A2RE-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 Corporation is a global semiconductor leader specializing in microcontrollers, analog, power, and connectivity solutions for automotive, industrial, and enterprise applications.
The HZ-L Series was developed specifically for low-noise, high-stability voltage reference applications in precision analog signal chains-including medical instrumentation, test equipment, and high-resolution data acquisition systems.
FAQ
What is the exact zener voltage specification for HZ4A2RE-E?
The HZ4A2RE-E has a zener voltage range of 5.2 V to 5.5 V at a test current of 0.5 mA, with a typical value of 5.3 V. This specification is confirmed in Table on Page 2 of Renesas document REJ03G0182-0300 Rev.3.00. The HZ4A2RE-E maintains this tolerance under DC test conditions and is not rated for pulsed operation.
Is HZ4A2RE-E compatible with standard DO-35 footprint layouts?
Yes, the HZ4A2RE-E uses the JEITA-standard DO-35 package (Renesas code GRZZ0002ZB-A), with 2.0 mm body diameter, 26.0 mm length, and 0.5 mm lead diameter. Its orange body and navy blue cathode band match mechanical dimensions in Figure 5 of REJ03G0182-0300, ensuring drop-in compatibility with existing DO-35 land patterns.
How does the noise performance of HZ4A2RE-E compare to generic Zener diodes?
The HZ4A2RE-E delivers approximately 1/3 to 1/10 the noise level of standard HZ-series Zeners, as stated in the Features section of REJ03G0182-0300. This low-noise characteristic is achieved through proprietary junction processing and is validated for use in audio preamplifiers and precision DAC references where broadband noise must be minimized.
What is the maximum allowable reverse current before breakdown for HZ4A2RE-E?
The HZ4A2RE-E specifies a maximum reverse current (IR) of 1 μA at VR = 2.0 V, per the Electrical Characteristics table on Page 2 of REJ03G0182-0300. This low leakage ensures minimal loading in high-impedance bias networks and preserves accuracy in nanoamp-level sensor interfaces.
Can HZ4A2RE-E be used in temperature-critical applications?
Yes-the HZ4A2RE-E exhibits a zener voltage temperature coefficient (γZ) of approximately −0.02 %/°C near 5.3 V, as shown in Figure 2 of REJ03G0182-0300. This stable coefficient, combined with a 175°C maximum junction temperature, supports reliable operation in industrial environments with ambient temperatures up to +125°C when properly derated.
HZ4A2RE-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:
- -
HZ4A2RE-E FAQ
1.How can I place an order for HZ4A2RE-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ4A2RE-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 HZ4A2RE-E reliable?
The price and inventory of HZ4A2RE-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ4A2RE-E is usually 5 days.
3.What payment methods are accepted for HZ4A2RE-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ4A2RE-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ4A2RE-E?
HZ4A2RE-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ4A2RE-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 HZ4A2RE-E?
For technical support, including HZ4A2RE-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ4A2RE-E requirements.
6.How does Aetrix verify that HZ4A2RE-E is sourced from the original manufacturer or authorized distributors?
All HZ4A2RE-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 HZ4A2RE-E meets industry standards.
7.What is the process for return or replacement of HZ4A2RE-E?
All HZ4A2RE-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ4A2RE-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 HZ4A2RE-E part is unused and in its original packaging.
Return procedure for HZ4A2RE-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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