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Renesas HZ30-2-E
- Part No.:
- HZ30-2-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
HZ30-2-E.pdf
- Description:
- DIODE ZENER 29.9V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:5,069
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Product details
Overview
HZ30-2-E from Renesas is a silicon planar Zener diode designed for precision voltage regulation in stabilized power supplies, featuring a nominal zener voltage of 30.2–31.6 V at 2 mA test current, 23.0 Ω dynamic resistance, 500 mW power dissipation, and DO-35 glass package with navy blue cathode band.
For engineers reviewing the HZ30-2-E datasheet, HZ30-2-E pinout, HZ30-2-E application, or HZ30-2-E equivalent, key selection criteria include zener voltage tolerance (±1.4 V), temperature coefficient (−0.04 %/°C), low leakage (<1 µA at VR = 23.3 V), and suitability for low-power reference and overvoltage protection circuits.
Technical Context
The HZ30-2-E operates as a two-terminal voltage reference device using avalanche breakdown mechanism, optimized for DC-stable operation with specified test conditions of IZ = 2 mA and Ta = 25°C. Its junction temperature rating of 175°C supports use in thermally constrained environments.
Dynamic resistance of 23.0 Ω at 2 mA ensures stable regulation under moderate load variation, while the −0.04 %/°C temperature coefficient minimizes drift across industrial temperature ranges. The DO-35 package enables through-hole mounting on standard PCBs with 2.0 mm lead diameter and 4.2 mm body width.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 30.2–31.6 V at IZ = 2 mA - defines precise regulation point for feedback loops |
| Dynamic Resistance (rd) | 23.0 Ω at IZ = 2 mA - determines output impedance and load regulation sensitivity |
| Power Dissipation (Pd) | 500 mW maximum - sets thermal derating limit for continuous operation |
| Reverse Leakage (IR) | <1 µA at VR = 23.3 V - ensures minimal quiescent current in standby mode |
| Temperature Coefficient | −0.04 %/°C - quantifies voltage drift per degree Celsius near 30 V |
| Junction Temperature (Tj) | 175°C maximum - defines upper thermal operating boundary for reliability |
Pinout & Package
Package: DO-35 glass axial-leaded package with navy blue cathode band; dimensions: φD = 2.0 mm (nom), E = 4.2 mm, L = 26.0 mm; mass ≈ 0.13 g; JEITA code GRZZ0002ZB-A.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (banded end) | Cathode | Connected to regulated output node; reverse-biased terminal during normal operation |
| 2 (non-banded end) | Anode | Connected to ground or lower-potential rail; completes bias path for zener conduction |
Key Features
| Feature | Design Value |
|---|---|
| Low dynamic impedance | 23.0 Ω enables tight regulation under varying load currents |
| Narrow zener voltage tolerance | ±1.4 V window at 30 V supports accurate reference design without trimming |
| High junction temperature rating | 175°C allows operation in enclosed or high-ambient industrial enclosures |
| Low reverse leakage | <1 µA at 75% of VZ reduces error in high-impedance sensing paths |
Applications
| Power Supply Reference | Overvoltage Protection |
|---|---|
Use Scenario: Providing stable 30 V reference for linear regulator feedback or ADC reference divider networks. IC Role / Device Role / Timing Role: Two-terminal passive voltage reference element. Use Value: Delivers ±1.4 V regulation accuracy with <23 Ω output impedance, minimizing error contribution in precision analog circuits. | Use Scenario: Clamping transient surges above 31.6 V in 24 V DC distribution systems. IC Role / Device Role / Timing Role: Shunt overvoltage limiter protecting downstream MOSFET gates or microcontroller I/O. Use Value: Activates at defined threshold with fast avalanche response, limiting peak voltage to ≤31.6 V under 2 mA test condition. |
| Current Source Biasing | Signal Level Translation |
Use Scenario: Establishing constant current for LED drivers or op-amp bias networks via series resistor + HZ30-2-E. IC Role / Device Role / Timing Role: Voltage-setting element enabling predictable IOUT = (VIN − VZ)/R. Use Value: Stable 30.2–31.6 V reference ensures ±4.7% current tolerance across production units at 25°C. | Use Scenario: Shifting logic-level signals from 3.3 V MCU to 30 V industrial sensor interface. IC Role / Device Role / Timing Role: Clamp diode establishing upper rail at ~30 V while allowing bidirectional signal swing below. Use Value: Low 23 Ω dynamic resistance maintains signal integrity during transient excursions up to 31.6 V. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage regulation applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5256BRLG | Zener voltage 30 V ±5%, rd = 35 Ω, Pd = 500 mW, DO-35 package | Wider voltage tolerance increases reference uncertainty; higher rd degrades load regulation | Select when cost sensitivity outweighs precision requirements and ±5% VZ is acceptable |
| BZX55-C30 | Zener voltage 30 V ±5%, rd = 30 Ω, Pd = 500 mW, DO-35 package | Higher temperature coefficient (−0.08 %/°C) doubles drift vs. HZ30-2-E | Prefer for legacy designs where BOM compatibility is prioritized over thermal stability |
Compared with 1N5256BRLG and BZX55-C30, the HZ30-2-E offers tighter voltage tolerance (±1.4 V vs. ±5%), lower dynamic resistance (23 Ω vs. 30–35 Ω), and superior temperature coefficient (−0.04 %/°C), making it optimal for precision reference and low-drift protection circuits where regulation accuracy is critical.
Availability
HZ30-2-E is available at Aetrix Electronics and suitable for stabilized power supply references, overvoltage clamping circuits, precision current source biasing, and industrial signal level translation requiring stable component supply and traceable sourcing.
Supply support for HZ30-2-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 manufacturer specializing in microcontrollers, analog, power, and timing solutions for automotive, industrial, and IoT applications.
The HZ Series Zener diodes are part of Renesas' discrete portfolio designed specifically for high-stability DC voltage regulation in space-constrained, thermally demanding power supply and protection circuits.
FAQ
What is the exact zener voltage range for HZ30-2-E?
The HZ30-2-E has a guaranteed zener voltage range of 30.2 V to 31.6 V when tested at IZ = 2 mA and Ta = 25°C, corresponding to the "-2" grade in the HZ30 family. This 1.4 V window reflects tight process control for precision reference applications, and the value is measured under DC conditions per the official Renesas datasheet REJ03G0180-0600 Rev.6.00.
Does HZ30-2-E support surface-mount assembly?
No, the HZ30-2-E uses a DO-35 glass axial-leaded package with 2.0 mm diameter leads and 26 mm length, designed exclusively for through-hole PCB mounting. It is not compatible with reflow or wave soldering processes used for SMD components. For surface-mount alternatives, engineers should evaluate Renesas' HZS series or other qualified SOD-123 Zener diodes, not the HZ30-2-E.
What is the maximum reverse leakage current for HZ30-2-E?
The maximum reverse leakage current for HZ30-2-E is less than 1 µA when tested at VR = 23.3 V (75% of minimum VZ) and Ta = 25°C. This low leakage ensures minimal error in high-impedance reference dividers and preserves battery life in always-on monitoring circuits where the HZ30-2-E is deployed.
How does temperature affect the zener voltage of HZ30-2-E?
The HZ30-2-E exhibits a zener voltage temperature coefficient of −0.04 %/°C, meaning its regulated voltage decreases by approximately 12 mV per °C rise near 30 V. This value is confirmed in Figure 2 of the Renesas datasheet and enables predictable drift compensation in industrial temperature ranges (−55°C to +125°C ambient).
Is HZ30-2-E RoHS compliant and halogen-free?
Yes, the HZ30-2-E meets RoHS Directive 2011/65/EU requirements and is halogen-free per Renesas' material declarations. The DO-35 glass package contains no lead in solderable terminations, and the device complies with JEDEC J-STD-609A Class 1 for marking. Full compliance documentation is available through Renesas' official product page and Aetrix Electronics' material certification portal for HZ30-2-E.
HZ30-2-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- HZ-P
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 29.9 V
- Tolerance:
- ±2.34%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 100 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 23 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-35
HZ30-2-E FAQ
1.How can I place an order for HZ30-2-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ30-2-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 HZ30-2-E reliable?
The price and inventory of HZ30-2-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ30-2-E is usually 5 days.
3.What payment methods are accepted for HZ30-2-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ30-2-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ30-2-E?
HZ30-2-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ30-2-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 HZ30-2-E?
For technical support, including HZ30-2-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ30-2-E requirements.
6.How does Aetrix verify that HZ30-2-E is sourced from the original manufacturer or authorized distributors?
All HZ30-2-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 HZ30-2-E meets industry standards.
7.What is the process for return or replacement of HZ30-2-E?
All HZ30-2-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ30-2-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 HZ30-2-E part is unused and in its original packaging.
Return procedure for HZ30-2-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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