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Renesas HZ36CPTK-E
- Part No.:
- HZ36CPTK-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- DO-204AH, DO-35, Axial
- Datasheet:
-
HZ36CPTK-E.pdf
- Description:
- DIODE ZENER 36V 500MW DO35
- Quantity:
- Payment:
- Shipping:
Inventory:92,250
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Product details
Overview
HZ36CPTK-E from Renesas Electronics is a silicon planar Zener diode optimized for low-noise voltage reference and stabilization in precision analog circuits, featuring a nominal zener voltage of 36.4 V to 38.0 V, 400 mW power dissipation, 33.0 Ω dynamic impedance at 0.5 mA test current, and −55 °C to +175 °C storage temperature range. It is used in high-stability power supply feedback paths and sensor biasing networks where low noise and tight voltage tolerance are critical.
For engineers reviewing the HZ36CPTK-E datasheet, HZ36CPTK-E pinout, HZ36CPTK-E application, or HZ36CPTK-E equivalent, key selection criteria include zener voltage tolerance (±1.5 V), low noise performance relative to legacy HZ series, DO-35 package compatibility, and thermal stability across industrial ambient conditions.
Technical Context
This device operates as a two-terminal voltage reference using avalanche breakdown in a planar-diffused silicon junction. Its zener voltage exhibits a positive temperature coefficient above ~5.6 V, with measured γZ ≈ +0.08 %/°C near 36 V - enabling predictable drift compensation in temperature-sensitive designs.
Designed for DC-biased operation only, the HZ36CPTK-E specifies reverse current ≤1 μA at VR = 30.2 V and dynamic resistance measured at IZ = 0.5 mA. It is not rated for transient surge suppression or AC regulation, and requires external current limiting per absolute maximum ratings.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 36.4 V min to 38.0 V max at IZ = 0.5 mA - defines stable regulation window for feedback loop design |
| Dynamic Resistance (rd) | 33.0 Ω max at IZ = 0.5 mA - determines output impedance and load regulation sensitivity |
| Power Dissipation (Pd) | 400 mW at Ta = 25 °C - sets maximum continuous DC power before thermal derating applies |
| Reverse Current (IR) | ≤1 μA at VR = 30.2 V - ensures minimal leakage error in high-impedance reference nodes |
| Junction Temperature (Tj) | 175 °C max - supports operation in high-ambient industrial environments with appropriate PCB copper area |
| Package | DO-35 (JEITA GRZZ0002ZB-A) - standard axial-leaded through-hole package with orange body and navy-blue cathode band |
Pinout & Package
DO-35 glass axial package with cathode identified by navy-blue 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 (banded end) | Cathode | Connected to regulated output node; polarity must be observed to avoid forward conduction |
| 2 (non-banded end) | Anode | Connected to current-limiting resistor and circuit ground or lower-potential rail |
Key Features
| Feature | Design Value |
|---|---|
| Noise Performance | ≈1/3–1/10 of legacy HZ-series diodes - enables use in low-noise op-amp references and precision ADC biasing |
| Zener Voltage Range | 34.2 V to 38.0 V across HZ36-xL variants - allows selection of tighter tolerance bins for production calibration |
| Thermal Stability | γZ ≈ +0.08 %/°C at 36 V - supports predictable temperature drift modeling in closed-loop systems |
| Low Leakage | IR ≤ 1 μA at 30.2 V - minimizes error current in high-impedance voltage divider networks |
Applications
| Industrial Power Supply Feedback | High-Voltage Sensor Biasing |
|---|---|
|
Use Scenario: Regulating output of isolated flyback or forward converter with optocoupler feedback. IC Role / Device Role / Timing Role: Primary-side voltage reference defining output setpoint accuracy and line/load regulation. Use Value: Tight VZ tolerance (±1.5 V) and low rd reduce output variation under load transients without requiring post-regulation LDO. |
Use Scenario: Providing stable bias voltage to piezoresistive pressure sensors operating at 30–35 V full-scale. IC Role / Device Role / Timing Role: Low-noise, low-drift reference source for ratiometric excitation and signal conditioning. Use Value: Reduced diode noise improves SNR in 24-bit delta-sigma ADC front-ends measuring microvolt-level bridge outputs. |
| Test Equipment Reference | Programmable Load Calibration |
|
Use Scenario: Precision voltage reference in bench multimeter input attenuator and ADC reference chain. IC Role / Device Role / Timing Role: Stable DC reference for autoranging and offset nulling circuits requiring long-term stability. Use Value: 175 °C Tj rating allows reliable operation in thermally dense instrument backplanes with minimal derating. |
Use Scenario: Setting threshold voltage in electronic load circuits that sink up to 2 A at 36 V. IC Role / Device Role / Timing Role: Zener-clamped reference for current-sense amplifier feedback in constant-current control loop. Use Value: 400 mW Pd supports direct resistor-limited biasing without auxiliary regulators, simplifying BOM. |
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 |
|---|---|---|---|
| ON Semiconductor MMBZ5267BLT1G | Zener voltage 36 V ±5%, rd = 70 Ω @ 12 mA, SOD-123 surface-mount package | Higher test current shifts operating point; SMT footprint requires layout change | Select when board space is constrained and higher dynamic impedance is acceptable |
| Vishay BZX84-C36 | Zener voltage 36 V ±5%, rd = 90 Ω @ 5 mA, SOT-23 package, higher noise than HZ-L series | Larger voltage tolerance and higher noise limit use in precision analog stages | Select for cost-sensitive consumer applications where ±5% VZ and moderate noise suffice |
Compared with MMBZ5267BLT1G and BZX84-C36, the HZ36CPTK-E delivers tighter voltage tolerance, lower dynamic impedance at low test current, and significantly reduced noise - making it preferred for industrial-grade analog reference designs where stability and signal integrity are prioritized over footprint size or unit cost.
Availability
HZ36CPTK-E is available at Aetrix Electronics and suitable for industrial power supplies, high-voltage sensor interfaces, and precision test equipment requiring stable component supply with traceable sourcing and long-term lifecycle support.
Supply support for HZ36CPTK-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 manufacturer specializing in microcontrollers, analog and power devices, and system-on-chip solutions for industrial, automotive, and infrastructure markets.
The HZ-L Series Zener diodes were developed specifically for low-noise, high-stability voltage reference applications in industrial instrumentation and power conversion systems where legacy HZ-series noise performance was insufficient.
FAQ
What is the exact zener voltage range specified for HZ36CPTK-E?
The HZ36CPTK-E has a guaranteed zener voltage range of 36.4 V minimum to 38.0 V maximum when tested at IZ = 0.5 mA and Ta = 25 °C. This 1.6 V span reflects the "3L" variant designation within the HZ36-xL family and is tighter than standard ±5% Zener tolerances found in commodity parts.
Is HZ36CPTK-E suitable for use in automotive applications?
No, the HZ36CPTK-E is classified as a Standard-grade Renesas product intended for industrial, office, and communications equipment - not automotive or safety-critical systems. It lacks AEC-Q200 qualification and is not rated for the extended temperature cycling or vibration requirements of vehicle ECUs or powertrain modules.
Does HZ36CPTK-E support AC or transient voltage regulation?
No, the HZ36CPTK-E is characterized and specified for DC operation only. Its electrical characteristics - including dynamic resistance and noise - are measured under steady-state DC bias. It is not designed or rated for surge suppression, ESD clamping, or AC waveform regulation.
What is the maximum allowable reverse current before breakdown in HZ36CPTK-E?
The HZ36CPTK-E specifies a maximum reverse current of 1 μA at VR = 30.2 V, which is well below its nominal zener voltage. This low leakage ensures minimal error contribution in high-impedance reference divider networks and supports accurate open-circuit voltage sensing prior to conduction onset.
How does the noise performance of HZ36CPTK-E compare to the original HZ series?
The HZ36CPTK-E achieves approximately 1/3 to 1/10 the noise level of equivalent-voltage parts in the legacy HZ series due to optimized planar diffusion and junction geometry. This improvement is explicitly documented in Renesas' REJ03G0182-0300 datasheet and validated in low-noise op-amp reference applications.
HZ36CPTK-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):
- 36 V
- Tolerance:
- ±2.08%
- Power - Max:
- 500 mW
- Impedance (Max) (Zzt):
- 140 Ohms
- Current - Reverse Leakage @ Vr:
- 1 µA @ 27 V
- Voltage - Forward (Vf) (Max) @ If:
- -
- Operating Temperature:
- 175°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- DO-35
HZ36CPTK-E FAQ
1.How can I place an order for HZ36CPTK-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ36CPTK-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 HZ36CPTK-E reliable?
The price and inventory of HZ36CPTK-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ36CPTK-E is usually 5 days.
3.What payment methods are accepted for HZ36CPTK-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ36CPTK-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ36CPTK-E?
HZ36CPTK-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ36CPTK-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 HZ36CPTK-E?
For technical support, including HZ36CPTK-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ36CPTK-E requirements.
6.How does Aetrix verify that HZ36CPTK-E is sourced from the original manufacturer or authorized distributors?
All HZ36CPTK-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 HZ36CPTK-E meets industry standards.
7.What is the process for return or replacement of HZ36CPTK-E?
All HZ36CPTK-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ36CPTK-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 HZ36CPTK-E part is unused and in its original packaging.
Return procedure for HZ36CPTK-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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