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Renesas HZ30CPTN-E
- Part No.:
- HZ30CPTN-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
HZ30CPTN-E.pdf
- Description:
- DIODE ZENER 30V 1W DO35
- Quantity:
- Payment:
- Shipping:
Inventory:2,937,695
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Product details
Overview
HZ30CPTN-E from Renesas Electronics is a silicon planar Zener diode optimized for low-noise voltage reference and precision stabilization in analog signal chains and power supply feedback paths. It delivers a nominal zener voltage of 30.2–31.6 V at 0.5 mA test current, with dynamic resistance of 27 Ω, maximum power dissipation of 400 mW, and junction temperature rating up to 175°C. It is used in high-stability DC-DC converter references and instrumentation-grade voltage regulation.
For engineers reviewing the HZ30CPTN-E datasheet, HZ30CPTN-E pinout, HZ30CPTN-E application, or HZ30CPTN-E equivalent, key selection criteria include its low-noise performance (≈1/3–1/10 of standard HZ series), tight zener voltage tolerance, low leakage, and DO-35 package compatibility with through-hole PCB layouts requiring thermal reliability and long-term stability.
Technical Context
The HZ30CPTN-E belongs to the HZ-L Series, engineered specifically to reduce diode noise in sensitive analog circuits. Its planar construction ensures consistent breakdown characteristics and improved temperature coefficient behavior versus legacy HZ devices.
It operates with a reverse test current of 0.5 mA, exhibits a zener impedance of 27 Ω max at that bias, and maintains stable regulation across ambient temperatures from −55°C to +175°C, supported by a 175°C maximum junction temperature rating.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 30.2 V min to 31.6 V max at IZ = 0.5 mA - defines precise regulation point for feedback networks |
| Dynamic Resistance (rd) | 27 Ω max at IZ = 0.5 mA - ensures minimal output voltage variation under load transients |
| Power Dissipation (Pd) | 400 mW max at Ta = 25°C - supports continuous operation in compact, non-heatsinked designs |
| Reverse Leakage Current | 1 μA max at VR = 22.9 V - preserves accuracy in high-impedance reference nodes |
| Junction Temperature (Tj) | 175°C max - enables use in industrial environments with elevated ambient temperatures |
| Package | DO-35 (JEITA GRZZ0002ZB-A) - industry-standard glass axial leaded package with orange body and navy-blue cathode band |
Pinout & Package
Package: DO-35 glass axial-leaded package (Renesas JEITA code GRZZ0002ZB-A), orange body color, navy-blue cathode band. Mass: 0.13 g. Dimensions: φD = 2.0 mm, E = 4.2 mm, L = 26.0 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Zener breakdown terminal | Connected to regulated output node; polarity must be observed to avoid forward conduction |
| 2 (Anode) | Reference ground return | Provides low-impedance path to circuit common; critical for noise rejection in feedback loops |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener operation | Noise level ≈1/3–1/10 that of standard HZ-series diodes - directly improves SNR in precision ADC references |
| Tight zener voltage tolerance | ±0.7 V window (30.2–31.6 V) at 0.5 mA - reduces calibration burden in factory-trimmed systems |
| Low dynamic impedance | 27 Ω max - minimizes line/load regulation error in shunt-regulated supplies |
| High thermal robustness | 175°C max junction temperature - supports deployment in engine control units and industrial motor drives |
| Stable temperature coefficient | γZ ≈ −0.04 %/°C near 30 V (inferred from Fig.2 curve) - enables predictable drift compensation |
Applications
| Industrial Power Supply Reference | Precision Analog Front-End |
|---|---|
Use Scenario: Shunt-voltage reference in isolated flyback converter feedback loop. IC Role / Device Role / Timing Role: Provides stable 30.5 V reference for optocoupler-driven regulation. Use Value: Low dynamic resistance (27 Ω) and low noise ensure <±0.5% output voltage stability over line/load/temperature. |
Use Scenario: Reference node for 16-bit SAR ADC input scaling network. IC Role / Device Role / Timing Role: Supplies ultra-low-noise, thermally stable reference voltage to ADC driver op-amp. Use Value: Noise reduction vs. standard Zeners preserves effective number of bits (ENOB) in high-resolution measurement systems. |
| Automotive Engine Control Unit | Test & Measurement Equipment |
Use Scenario: Overvoltage clamp and reference in microcontroller-supply monitoring circuit. IC Role / Device Role / Timing Role: Zener clamps transient spikes while providing stable bias for comparator threshold setting. Use Value: 175°C junction rating and −55°C to +175°C storage range support under-hood deployment without derating. |
Use Scenario: Calibration reference in portable multimeter voltage divider chain. IC Role / Device Role / Timing Role: Serves as traceable, low-drift voltage standard for self-calibration routines. Use Value: Tight VZ tolerance and low leakage (<1 μA) enable ±0.1% absolute accuracy over 1000-hour field use. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode voltage reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N5257B (ON Semiconductor) | Zener voltage 30 V ±5%, rd = 35 Ω max, Pd = 500 mW, DO-35 package | Higher dynamic resistance and wider VZ tolerance; suitable where cost sensitivity outweighs noise/precision needs | Select when higher power margin is required and noise floor is non-critical |
| BZX85C30 (Vishay) | Zener voltage 30 V ±5%, rd = 40 Ω max, Pd = 1.3 W, DO-41 package | Larger DO-41 package, higher power rating, but significantly higher noise and looser tempco | Choose only if board layout allows larger footprint and thermal design accommodates higher dissipation |
Compared with 1N5257B and BZX85C30, the HZ30CPTN-E offers superior noise performance and tighter voltage tolerance in the same DO-35 footprint-making it optimal for high-fidelity analog references where signal integrity is prioritized over raw power handling.
Availability
HZ30CPTN-E is available at Aetrix Electronics and suitable for industrial power supplies, precision test equipment, automotive engine control units, and analog front-end designs requiring stable component supply with guaranteed long-term manufacturability.
Supply support for HZ30CPTN-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 industrial, automotive, and infrastructure markets.
The HZ-L Series Zener diodes were developed by Renesas to address low-noise voltage reference requirements in high-accuracy analog systems-targeting applications where traditional Zeners introduce unacceptable signal degradation.
FAQ
What is the zener voltage range for HZ30CPTN-E?
The HZ30CPTN-E has a specified zener voltage range of 30.2 V minimum to 31.6 V maximum, measured at a test current of 0.5 mA and ambient temperature of 25°C. This tight 1.4 V window reflects its role as a precision reference device, and actual VZ for a given unit falls within this band per Renesas' REJ03G0182-0300 specification.
Is HZ30CPTN-E compatible with standard DO-35 footprints?
Yes, the HZ30CPTN-E uses the DO-35 package (JEITA code GRZZ0002ZB-A) with standardized dimensions: body diameter 2.0 mm, lead spacing 4.2 mm, and overall length 26.0 mm. Its orange body and navy-blue cathode band match industry visual identification conventions, ensuring drop-in compatibility with existing DO-35 layouts.
How does the noise performance of HZ30CPTN-E compare to standard Zener diodes?
The HZ30CPTN-E achieves approximately 1/3 to 1/10 the noise level of conventional HZ-series Zeners, as confirmed in Renesas' HZ-L Series documentation. This low-noise characteristic stems from its silicon planar process and optimized junction design, making the HZ30CPTN-E especially valuable in ADC reference buffers and low-level signal conditioning stages.
What is the maximum power dissipation rating for HZ30CPTN-E?
The HZ30CPTN-E has a maximum power dissipation (Pd) rating of 400 mW at an ambient temperature of 25°C. Derating is required above 25°C per the published power vs. ambient temperature curve (Fig.3), with zero dissipation reached at approximately 175°C ambient-matching its 175°C maximum junction temperature rating.
Does HZ30CPTN-E have automotive qualification?
The HZ30CPTN-E is classified as a "Standard" quality grade device per Renesas' quality grading system (REJ03G0182-0300, p.1), intended for industrial, office, and communications equipment-not automotive safety-critical systems. It is suitable for under-hood engine control auxiliary circuits where full AEC-Q101 qualification is not mandated, but not for airbag or braking systems.
HZ30CPTN-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- HZ
- Package/Case:
- DO-204AH, DO-35, Axial
- Packaging:
- Bulk
- Product Status:
- Active
- Voltage - Zener (Nom) (Vz):
- 30 V
- Tolerance:
- ±6.67%
- Power - Max:
- 1 W
- Impedance (Max) (Zzt):
- 18 Ohms
- Current - Reverse Leakage @ Vr:
- 10 µA @ 23 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-35
HZ30CPTN-E FAQ
1.How can I place an order for HZ30CPTN-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ30CPTN-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 HZ30CPTN-E reliable?
The price and inventory of HZ30CPTN-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ30CPTN-E is usually 5 days.
3.What payment methods are accepted for HZ30CPTN-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ30CPTN-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ30CPTN-E?
HZ30CPTN-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ30CPTN-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 HZ30CPTN-E?
For technical support, including HZ30CPTN-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ30CPTN-E requirements.
6.How does Aetrix verify that HZ30CPTN-E is sourced from the original manufacturer or authorized distributors?
All HZ30CPTN-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 HZ30CPTN-E meets industry standards.
7.What is the process for return or replacement of HZ30CPTN-E?
All HZ30CPTN-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ30CPTN-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 HZ30CPTN-E part is unused and in its original packaging.
Return procedure for HZ30CPTN-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ30CPTN-E Tags
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