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Renesas HZ30-2J-E
- Part No.:
- HZ30-2J-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ30-2J-E.pdf
- Description:
- DIODE ZENER
- Quantity:
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Inventory:42,500
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Product details
Overview
HZ30-2J-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 29.2–30.6 V at 0.5 mA test current, 400 mW power dissipation, 27 Ω dynamic resistance, and DO-35 glass package with navy blue cathode band.
For engineers reviewing the HZ30-2J-E datasheet, HZ30-2J-E pinout, HZ30-2J-E application, or HZ30-2J-E equivalent, key selection criteria include zener voltage tolerance (±2.5% at 30 V), low noise performance (~1/3–1/10 of standard HZ series), temperature coefficient (−0.04 %/°C typical), and suitability for stabilized reference supplies in instrumentation and sensor signal conditioning.
Technical Context
The HZ30-2J-E employs a silicon planar junction structure to achieve low leakage current (<1 μA at VR = 20.9 V) and stable zener breakdown with minimal voltage drift over temperature. Its design targets DC voltage reference stability rather than transient suppression or surge handling.
It operates within a junction temperature range of −55°C to +175°C and exhibits a negative temperature coefficient of −0.04 %/°C, making it suitable for applications where thermal drift compensation is required via complementary components or circuit topology.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 29.2–30.6 V at IZ = 0.5 mA - defines precise DC reference level for feedback loops or biasing networks |
| Dynamic Resistance (rd) | 27 Ω max at IZ = 0.5 mA - ensures minimal output impedance and high regulation accuracy under load variation |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - supports continuous operation in compact PCB layouts without forced cooling |
| Reverse Leakage Current (IR) | ≤1 μA at VR = 20.9 V - reduces error current in high-impedance reference paths |
| Temperature Coefficient (γZ) | −0.04 %/°C typical - enables predictable drift behavior for temperature-compensated designs |
| Junction Temperature (Tj) | −55°C to +175°C - allows deployment in industrial and automotive under-hood environments |
Pinout & Package
Package: DO-35 glass axial package (JEITA code GRZZ0002ZB-A), orange body color, navy blue cathode band, 2.0 mm diameter × 26.0 mm length, 0.13 g mass.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to regulated positive rail; reverse-biased operation requires cathode at higher potential than anode |
| 2 (Anode) | Reference ground node | Serves as circuit common; must be held at lower potential than cathode to maintain zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Noise performance | Approximately 1/3–1/10 lower than standard HZ series - critical for audio preamps and ADC reference buffers |
| Zener impedance stability | Low rd (27 Ω) maintained across 0.5–1 mA operating range - improves line/load regulation in low-current references |
| Voltage tolerance | ±2.5% at nominal 30 V - enables tighter system-level voltage margin control without trimming |
| Thermal robustness | 175°C max junction temperature - supports use in thermally constrained enclosures without derating |
Applications
| High-Precision Instrumentation Reference | Low-Noise Audio Signal Conditioning |
|---|---|
Use Scenario: Stable 30 V reference for 24-bit delta-sigma ADC front-end biasing in portable multimeters. IC Role / Device Role / Timing Role: Zener diode provides low-drift, low-noise DC reference voltage for analog input stage calibration. Use Value: 27 Ω dynamic resistance and <1 μA leakage minimize gain error and offset drift over temperature and time. |
Use Scenario: DC bias generation for JFET-input op-amp stages in studio microphone preamplifiers. IC Role / Device Role / Timing Role: Low-noise zener establishes clean quiescent point for ultra-low-distortion amplification. Use Value: Noise reduction by factor of 3–10 versus standard HZ series directly lowers audible hiss floor in audio path. |
| Industrial Sensor Excitation Supply | Programmable Logic Controller Analog Input Module |
Use Scenario: Constant-current excitation source for RTD and strain gauge bridges in factory-floor sensors. IC Role / Device Role / Timing Role: Zener regulates current-setting resistor voltage to stabilize bridge excitation across ambient temperature swings. Use Value: −0.04 %/°C temperature coefficient enables predictable drift compensation using passive resistor networks. |
Use Scenario: Reference voltage source for 16-bit DAC outputs driving 4–20 mA loop transmitters in PLC backplanes. IC Role / Device Role / Timing Role: Provides stable 30 V rail for current-source compliance and DAC buffer supply. Use Value: 400 mW power rating supports sustained operation under full-scale loop load without thermal shutdown. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX85C30 (Nexperia) | 30 V ±5%, 1.3 W Pd, 40 Ω rd, DO-41 package | Higher power but higher noise and impedance - suited for general-purpose regulation, not low-noise analog | Select when thermal margin >400 mW is needed and noise is non-critical |
| 1N5257B (ON Semiconductor) | 30 V ±5%, 500 mW Pd, 35 Ω rd, DO-35 package, no low-noise specification | Lacks documented noise reduction - baseline performance only, no verified low-noise advantage | Choose for cost-sensitive legacy designs where Renesas HZ-L series noise benefit is unnecessary |
Compared with BZX85C30 and 1N5257B, the HZ30-2J-E delivers superior noise performance and tighter voltage tolerance in the same DO-35 footprint, making it the preferred choice for precision analog reference circuits where signal integrity is prioritized over raw power handling.
Availability
HZ30-2J-E is available at Aetrix Electronics and suitable for high-precision instrumentation reference, low-noise audio signal conditioning, and industrial sensor excitation supply requiring stable component supply and long-term parametric consistency.
Supply support for HZ30-2J-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 Technology Corp. is a Japanese semiconductor manufacturer specializing in microcontrollers, analog and power devices, and timing solutions for industrial, automotive, and infrastructure markets.
The HZ-L Series was designed specifically for low-noise, high-stability DC voltage reference applications in precision analog systems, emphasizing reduced diode noise, tight zener voltage tolerance, and predictable thermal behavior.
FAQ
What is the exact zener voltage range for HZ30-2J-E?
The HZ30-2J-E has a guaranteed zener voltage range of 29.2 V to 30.6 V when tested at IZ = 0.5 mA and Ta = 25°C. This ±2.5% tolerance is tighter than standard Zener diodes and supports accurate voltage reference design without post-manufacturing trimming.
Is HZ30-2J-E compatible with DO-35 socket footprints used for other Zener diodes?
Yes, the HZ30-2J-E uses the standard DO-35 axial glass package (JEITA code GRZZ0002ZB-A) with 2.0 mm diameter and 26.0 mm length, matching mechanical dimensions of industry-standard DO-35 Zener diodes including 1N4749A and BZX55C30, enabling direct PCB footprint compatibility.
How does the noise performance of HZ30-2J-E compare to generic Zener diodes?
The HZ30-2J-E achieves approximately 1/3 to 1/10 the noise level of standard HZ-series Zeners due to its optimized silicon planar structure and process control. This is confirmed in Renesas documentation REJ03G0182-0300 and makes HZ30-2J-E suitable for audio preamps and high-resolution ADC references where noise floor matters.
What is the maximum reverse leakage current specification for HZ30-2J-E?
The HZ30-2J-E specifies a maximum reverse leakage current (IR) of 1 μA at VR = 20.9 V and Ta = 25°C. This low leakage minimizes error current in high-impedance reference divider networks and preserves accuracy in battery-powered or low-power analog systems.
Can HZ30-2J-E be used in temperature-compensated reference circuits?
Yes, the HZ30-2J-E has a well-characterized temperature coefficient of −0.04 %/°C (typical), as shown in Figure 2 of REJ03G0182-0300. This predictable negative drift allows pairing with positive-TC components (e.g., forward-biased diodes) to construct compensated reference sources with sub-10 ppm/°C stability.
HZ30-2J-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:
- -
HZ30-2J-E FAQ
1.How can I place an order for HZ30-2J-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ30-2J-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 HZ30-2J-E reliable?
The price and inventory of HZ30-2J-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ30-2J-E is usually 5 days.
3.What payment methods are accepted for HZ30-2J-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ30-2J-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ30-2J-E?
HZ30-2J-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ30-2J-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 HZ30-2J-E?
For technical support, including HZ30-2J-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ30-2J-E requirements.
6.How does Aetrix verify that HZ30-2J-E is sourced from the original manufacturer or authorized distributors?
All HZ30-2J-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 HZ30-2J-E meets industry standards.
7.What is the process for return or replacement of HZ30-2J-E?
All HZ30-2J-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ30-2J-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 HZ30-2J-E part is unused and in its original packaging.
Return procedure for HZ30-2J-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ30-2J-E Tags
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