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Renesas HZ3HC1-E
- Part No.:
- HZ3HC1-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ3HC1-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:9,500
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Product details
Overview
HZ3HC1-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 33 V (min 31.2 V, max 32.6 V), 400 mW power dissipation, 250 Ω dynamic impedance at 1 mA, and DO-35 glass package with orange body and navy blue cathode band. It serves as a stable reference in low-drift power supplies and sensor biasing networks.
For engineers reviewing the HZ3HC1-E datasheet, HZ3HC1-E pinout, HZ3HC1-E application, or HZ3HC1-E equivalent, key selection criteria include zener voltage tolerance (±2.2% at 33 V), temperature coefficient (−0.04 %/°C), low noise performance (≈1/3–1/10 of standard HZ series), and DO-35 thermal derating behavior up to 175°C junction temperature.
Technical Context
The HZ3HC1-E operates as a two-terminal voltage reference using silicon planar junction technology, with zener breakdown mechanism dominant above 5 V. Its low-noise design targets applications requiring minimal broadband voltage fluctuation, achieved via optimized doping profile and passivation.
Electrical behavior is specified at DC test conditions (IZ = 1 mA, Ta = 25°C), with dynamic resistance measured at AC small-signal superimposed on DC bias. Thermal stability relies on negative temperature coefficient compensation inherent to its 33 V zener voltage range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 31.2 V (min) to 32.6 V (max) at IZ = 1 mA - defines stable regulation window for mid-range precision references |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - sets maximum continuous DC power handling before thermal shutdown or degradation |
| Dynamic Resistance (rd) | 250 Ω max at IZ = 1 mA - determines output impedance and load regulation sensitivity |
| Reverse Current (IR) | 1 μA max at VR = 25 V - ensures minimal leakage-induced error in high-impedance reference nodes |
| Temperature Coefficient (γZ) | −0.04 %/°C - quantifies voltage drift per degree ambient change, critical for wide-temperature operation |
| Junction Temperature (Tj) | 175°C maximum - defines upper thermal limit for reliable long-term operation under power stress |
Pinout & Package
Package: DO-35 glass axial lead package (JEITA code GRZZ0002ZB-A), orange body color, navy blue cathode band, mass 0.13 g, dimensions φD = 2.0 mm, L = 26.0 mm, E = 4.2 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | High-side reference terminal | Connected to regulated positive rail; polarity must be observed to avoid forward conduction |
| 2 (Anode) | Low-side reference terminal | Typically grounded or connected to current-limiting resistor; establishes reference node potential |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener operation | Diode noise level ≈1/3–1/10 lower than standard HZ series - reduces RMS voltage ripple in sensitive analog stages |
| Stable voltage regulation | Zener voltage tolerance ±2.2% at 33 V - enables predictable reference accuracy without trimming |
| Low leakage current | ≤1 μA at 25 V reverse bias - preserves high-impedance node integrity in battery-powered or micropower designs |
| Wide operating temperature | Storage range −55°C to +175°C - supports industrial and automotive under-hood environments |
Applications
| High-Voltage Sensor Biasing | Precision Analog Power Supply |
|---|---|
Use Scenario: Providing stable excitation voltage to strain gauge bridges or RTD interfaces in industrial process transmitters. IC Role / Device Role / Timing Role: Two-terminal passive voltage reference establishing fixed bias point independent of supply variation. Use Value: Low 250 Ω dynamic impedance minimizes loading error; −0.04 %/°C TC ensures <±0.5% drift over −40°C to +85°C. |
Use Scenario: Generating clean 33 V reference for ADC voltage reference inputs or op-amp feedback networks in data acquisition systems. IC Role / Device Role / Timing Role: Low-noise shunt regulator supplying ultra-stable reference voltage to precision converters. Use Value: Noise reduction vs. standard HZ series improves effective resolution by ≥1 LSB in 16-bit systems. |
| Low-Power Instrumentation Reference | Overvoltage Protection Clamping |
Use Scenario: Serving as primary reference in portable multimeters or handheld calibration tools where battery life and accuracy are critical. IC Role / Device Role / Timing Role: Passive zener element delivering stable voltage with ≤1 μA leakage to extend battery runtime. Use Value: 400 mW rating allows safe operation at 1 mA bias current while maintaining thermal margin at elevated ambient. |
Use Scenario: Acting as secondary clamping device in telecom line interface circuits to suppress transient surges above 33 V. IC Role / Device Role / Timing Role: Fast-reacting voltage clamp limiting peak excursion during ESD or lightning-induced transients. Use Value: DO-35 package enables direct PCB mounting near protected ICs; 175°C Tj rating sustains reliability after repeated clamping events. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4749A | Zener voltage 33 V (±5%), rd = 300 Ω, Pd = 1 W, DO-41 package | Higher power rating but higher noise and looser tolerance; less suitable for low-drift analog references | Select when higher surge energy handling is required and noise is secondary to cost or availability |
| BZX85C33 | Zener voltage 33 V (±5%), rd = 50 Ω typical, Pd = 1.3 W, DO-41 package | Lower dynamic impedance but no documented low-noise optimization; wider voltage tolerance impacts accuracy | Prefer for general-purpose regulation where tight TC and noise specs are not mandated |
Compared with 1N4749A and BZX85C33, the HZ3HC1-E delivers superior voltage stability (±2.2% vs. ±5%), lower noise floor, and tighter temperature coefficient (−0.04 %/°C), making it optimal for metrology-grade references despite lower power rating.
Availability
HZ3HC1-E is available at Aetrix Electronics and suitable for precision analog power supplies, sensor excitation circuits, and low-noise instrumentation requiring stable component supply with consistent electrical binning and traceable lot history.
Supply support for HZ3HC1-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 mixed-signal devices, and power management ICs, with global R&D and manufacturing infrastructure.
The HZ-L Series Zener diodes were designed specifically for low-noise, high-stability voltage reference applications in industrial measurement, test equipment, and precision analog signal chains.
FAQ
What is the exact zener voltage range for HZ3HC1-E at 1 mA test current?
The HZ3HC1-E has a guaranteed zener voltage range of 31.2 V minimum to 32.6 V maximum when tested at IZ = 1 mA and Ta = 25°C. This ±2.2% tolerance reflects tight binning for precision reference use, and the value is confirmed in the Renesas REJ03G0182-0300 datasheet, Page 3, under "HZ33-1L" row.
Does HZ3HC1-E support operation above 100°C ambient temperature?
Yes, the HZ3HC1-E is rated for storage from −55°C to +175°C and operates reliably up to its 175°C maximum junction temperature. Derating curves in the datasheet (Page 4, Fig.3) show usable power dissipation down to ~200 mW at 100°C ambient, enabling deployment in industrial control cabinets or automotive engine compartments.
How does the noise performance of HZ3HC1-E compare to standard Zener diodes?
The HZ3HC1-E achieves approximately 1/3 to 1/10 the noise level of the legacy HZ series Zeners due to proprietary planar junction processing and optimized passivation. This low-noise characteristic is explicitly stated in the "Features" section of the REJ03G0182-0300 datasheet and makes HZ3HC1-E suitable for high-resolution ADC references and low-drift op-amp biasing.
What is the cathode identification method for HZ3HC1-E?
The HZ3HC1-E uses a navy blue cathode band located near one end of its orange-colored DO-35 glass body. Pin 1 (cathode) is the lead adjacent to this band; Pin 2 (anode) is the opposite lead. This marking is shown in the "Pin Arrangement" diagram on Page 1 of the Renesas datasheet.
Can HZ3HC1-E be used in place of HZ33-1L?
Yes - HZ3HC1-E is the Renesas orderable part number corresponding to the HZ33-1L variant in the HZ-L Series. Both share identical electrical specifications (31.2–32.6 V VZ, 250 Ω rd, 400 mW Pd) and DO-35 packaging. The "C1" suffix denotes a specific manufacturing lot or screening grade within the same functional family.
HZ3HC1-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:
- -
HZ3HC1-E FAQ
1.How can I place an order for HZ3HC1-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ3HC1-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 HZ3HC1-E reliable?
The price and inventory of HZ3HC1-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ3HC1-E is usually 5 days.
3.What payment methods are accepted for HZ3HC1-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ3HC1-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ3HC1-E?
HZ3HC1-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ3HC1-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 HZ3HC1-E?
For technical support, including HZ3HC1-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ3HC1-E requirements.
6.How does Aetrix verify that HZ3HC1-E is sourced from the original manufacturer or authorized distributors?
All HZ3HC1-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 HZ3HC1-E meets industry standards.
7.What is the process for return or replacement of HZ3HC1-E?
All HZ3HC1-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ3HC1-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 HZ3HC1-E part is unused and in its original packaging.
Return procedure for HZ3HC1-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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