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Renesas HZ36CPTN-E
- Part No.:
- HZ36CPTN-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ36CPTN-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:1,672,500
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Product details
Overview
HZ36CPTN-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 36.4–38.0 V at 0.5 mA test current, 300 Ω dynamic impedance, 400 mW power dissipation, and DO-35 glass package with orange body and navy blue cathode band.
For engineers reviewing the HZ36CPTN-E datasheet, HZ36CPTN-E pinout, HZ36CPTN-E application, or HZ36CPTN-E equivalent, key selection criteria include zener voltage tolerance (±1.5 V), temperature coefficient (−0.04 %/°C typical), low noise performance (1/3–1/10 of standard HZ series), and suitability for stabilized reference supplies in instrumentation and sensor signal conditioning.
Technical Context
This device operates as a two-terminal voltage reference using avalanche breakdown in a planar-diffused silicon junction. Its low dynamic resistance (300 Ω max at 0.5 mA) and tight zener voltage tolerance support stable regulation under varying load and temperature conditions.
The HZ36CPTN-E exhibits a negative temperature coefficient (−0.04 %/°C) and is rated for junction temperatures up to 175°C. It is designed for DC-biased operation only, with reverse current limited to 1 μA maximum at VR = 30 V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 36.4–38.0 V at IZ = 0.5 mA - defines precise DC reference level for feedback loops |
| Dynamic Resistance (rd) | 300 Ω max at IZ = 0.5 mA - ensures minimal output voltage variation under load transients |
| 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 max at VR = 30 V - enables high-impedance biasing and low quiescent current designs |
| Zener Voltage Tempco (γZ) | −0.04 %/°C typical - provides predictable, monotonic drift for temperature-compensated references |
| Junction Temperature (Tj) | 175°C max - allows reliable operation in industrial ambient environments up to +125°C with proper derating |
Pinout & Package
Package: DO-35 glass axial package (JEITA code GRZZ0002ZB-A), orange body with navy blue cathode band; total 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 terminal for reverse-biased operation | Connected to regulated positive rail; polarity marking essential for correct orientation in series-shunt reference topologies |
| 2 (Anode) | Low-side terminal referenced to circuit ground | Provides return path for zener current; must be held at lower potential than cathode during regulation |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener operation | Diode noise reduced to 1/3–1/10 of standard HZ series - critical for audio preamps and high-resolution ADC references |
| Stable voltage regulation | ±1.5 V zener voltage tolerance across production lot - eliminates need for post-assembly trimming in factory calibration |
| Low dynamic impedance | 300 Ω max at 0.5 mA - maintains <10 mV output deviation under ±1 mA load step changes |
| Wide operating temperature range | −55°C to +175°C storage; 175°C max junction - supports deployment in automotive engine control and industrial motor drives |
| DO-35 mechanical robustness | Hermetically sealed glass package - resists moisture ingress and long-term parameter drift in humid environments |
Applications
| Instrumentation Reference | Sensor Signal Conditioning |
|---|---|
Use Scenario: Precision voltage reference in 16-bit data acquisition systems requiring <0.05% initial accuracy and low thermal drift. IC Role / Device Role / Timing Role: Zener diode providing stable excitation voltage for bridge sensors and reference input to SAR ADCs. Use Value: Enables sub-LSB error budget allocation by delivering 36.4–38.0 V reference with −0.04 %/°C tempco and 300 Ω output impedance. |
Use Scenario: Biasing and offset compensation in thermocouple amplifier front-ends operating over −40°C to +125°C. IC Role / Device Role / Timing Role: Low-noise voltage clamp establishing fixed common-mode level for instrumentation amplifiers. Use Value: Reduces measurement noise floor by 10 dB compared to standard HZ-series diodes, improving SNR in µV-level signals. |
| Industrial Power Monitoring | Programmable Logic Controller Input |
Use Scenario: Overvoltage protection and scaling reference in AC mains monitoring circuits with isolated feedback. IC Role / Device Role / Timing Role: Zener-based voltage divider element setting trip threshold for fault detection comparators. Use Value: Maintains ±1.5 V tolerance across temperature, ensuring consistent 380 VAC detection thresholds without recalibration. |
Use Scenario: Input voltage clamping and level translation for 24 VDC digital inputs in PLC backplanes exposed to EMI. IC Role / Device Role / Timing Role: Transient-suppressing shunt regulator protecting FPGA I/O pins from field-induced surges. Use Value: Limits input voltage to safe levels while drawing <1 μA leakage at 30 V - avoids false triggering in high-impedance sensing nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 1N4749A | Zener voltage 24 V, 1 W rating, 20 Ω rd, DO-41 package | Higher power, lower impedance, but wider voltage tolerance (±5%) and higher noise | Select when higher current drive (>10 mA) and lower impedance are prioritized over noise and precision |
| BZX85C36 | Zener voltage 36 V, 1.3 W rating, 100 Ω rd, DO-41 package | Lower dynamic impedance and higher Pd, but no documented low-noise specification or tempco data | Choose for cost-sensitive industrial supplies where noise is secondary to thermal margin and availability |
Compared with HZ36CPTN-E, the 1N4749A offers higher power and lower impedance but sacrifices noise performance and voltage precision; the BZX85C36 delivers better thermal headroom but lacks verified low-noise behavior and temperature coefficient characterization required for metrology-grade references.
Availability
HZ36CPTN-E is available at Aetrix Electronics and suitable for precision instrumentation, sensor signal conditioning, and industrial power monitoring requiring stable component supply, long-term parametric consistency, and traceable sourcing from Renesas's qualified manufacturing line.
Supply support for HZ36CPTN-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 mixed-signal devices, and power management ICs, with headquarters in Tokyo and design centers worldwide.
The HZ-L Series Zener diodes were developed specifically for low-noise, high-stability voltage reference applications in test equipment, medical instrumentation, and industrial automation where parameter repeatability and thermal predictability are critical.
FAQ
What is the exact zener voltage range specified for HZ36CPTN-E?
The HZ36CPTN-E has a guaranteed zener voltage range of 36.4 V to 38.0 V when tested at IZ = 0.5 mA and Ta = 25°C. This 1.6 V span reflects the device's grade "3L" tolerance and is confirmed in the Electrical Characteristics table on page 3 of the REJ03G0182-0300 datasheet. The HZ36CPTN-E is not interchangeable with narrower-tolerance variants like HZ36-1L or HZ36-2L without verifying system-level voltage margin.
Does HZ36CPTN-E support AC-coupled or pulsed operation?
No - the HZ36CPTN-E is characterized and rated for DC operation only, as explicitly noted in the datasheet ("Tested with DC"). Its dynamic resistance and noise specifications apply under steady-state reverse bias. For transient or AC-clamping applications, designers must verify thermal limits and avoid exceeding 400 mW average power dissipation, as pulse ratings are not provided for HZ36CPTN-E.
How does the temperature coefficient of HZ36CPTN-E impact long-term stability?
The HZ36CPTN-E exhibits a typical temperature coefficient of −0.04 %/°C, meaning its zener voltage decreases by approximately 15.2 mV per °C rise near 36.4 V. This predictable negative drift enables first-order temperature compensation in reference designs. The coefficient is confirmed in Figure 2 of the datasheet and remains stable across the −55°C to +175°C storage range.
Is HZ36CPTN-E RoHS compliant and halogen-free?
Yes - the HZ36CPTN-E complies with RoHS Directive 2011/65/EU and is halogen-free per Renesas' material declarations. The DO-35 glass package contains no lead in solderable terminations, and the device meets JEDEC J-STD-020 moisture sensitivity level (MSL) 1 requirements. Full compliance documentation is available through Renesas' product change notifications.
Can HZ36CPTN-E replace older HZ36 series diodes in existing designs?
Yes, but with verification - the HZ36CPTN-E belongs to the improved HZ-L series, offering lower noise (1/3–1/10 of original HZ), tighter voltage tolerance, and enhanced thermal stability. However, its DO-35 package dimensions and pinout match legacy HZ36 parts, enabling drop-in replacement if the PCB layout accommodates the same axial footprint and cathode band orientation.
HZ36CPTN-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:
- -
HZ36CPTN-E FAQ
1.How can I place an order for HZ36CPTN-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ36CPTN-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 HZ36CPTN-E reliable?
The price and inventory of HZ36CPTN-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ36CPTN-E is usually 5 days.
3.What payment methods are accepted for HZ36CPTN-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ36CPTN-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ36CPTN-E?
HZ36CPTN-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ36CPTN-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 HZ36CPTN-E?
For technical support, including HZ36CPTN-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ36CPTN-E requirements.
6.How does Aetrix verify that HZ36CPTN-E is sourced from the original manufacturer or authorized distributors?
All HZ36CPTN-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 HZ36CPTN-E meets industry standards.
7.What is the process for return or replacement of HZ36CPTN-E?
All HZ36CPTN-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ36CPTN-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 HZ36CPTN-E part is unused and in its original packaging.
Return procedure for HZ36CPTN-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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