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Renesas HZ27CPTK-E
- Part No.:
- HZ27CPTK-E
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ27CPTK-E.pdf
- Description:
- DIODE ZENER
- Quantity:
- Payment:
- Shipping:
Inventory:190,000
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Product details
Overview
HZ27CPTK-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 27.2 V to 28.6 V at 0.5 mA test current, dynamic resistance of 150 Ω max, and 400 mW power dissipation in DO-35 package. It delivers low leakage, low zener impedance, and noise performance approximately 1/3–1/10 lower than standard HZ-series diodes.
For engineers reviewing the HZ27CPTK-E datasheet, HZ27CPTK-E pinout, HZ27CPTK-E application, or HZ27CPTK-E equivalent, key selection criteria include its 27.2–28.6 V zener range, 150 Ω max dynamic impedance at 0.5 mA, −0.06 %/°C temperature coefficient near 27 V, DO-35 mechanical compatibility, and suitability for low-noise reference and stabilized power supply designs.
Technical Context
The HZ27CPTK-E operates as a two-terminal voltage reference device using silicon planar junction technology, with zener breakdown mechanism dominant in its 27 V range. Its low-noise design targets applications requiring minimal voltage reference fluctuation under varying load and thermal conditions.
It exhibits a negative temperature coefficient of −0.06 %/°C (≈ −16.2 mV/°C) at ~27 V, consistent with mid-voltage Zener diodes, and maintains stable regulation down to 0.5 mA test current while supporting up to 400 mW continuous dissipation at 25°C ambient.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 27.2 V min to 28.6 V max at IZ = 0.5 mA - defines precise regulation band for low-drift references |
| Dynamic Resistance (rd) | 150 Ω max at IZ = 0.5 mA - ensures minimal output voltage variation under small-signal load changes |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - supports compact PCB layout without forced cooling in low-power supplies |
| Zener Temperature Coefficient | −0.06 %/°C (≈ −16.2 mV/°C) - enables predictable drift compensation in temperature-sensitive analog stages |
| Reverse Leakage Current (IR) | 1 μA max at VR = 20.2 V - guarantees high impedance standby state and minimal quiescent error in bias networks |
| Junction Temperature (Tj) | 175°C max - allows reliable operation in industrial environments with localized heating |
Pinout & Package
Package: DO-35 (JEITA code GRZZ0002ZB-A), glass axial leaded package with orange body and navy-blue cathode band; dimensions per SC-40 outline (L ≈ 26 mm, φD ≈ 2.0 mm, φb ≈ 0.5 mm).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Negative terminal of Zener junction | Connected to higher-potential node in reverse-bias configuration; marked by navy-blue band |
| 2 (Anode) | Positive terminal of Zener junction | Connected to circuit ground or lower-potential reference point; unmarked end |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener operation | Noise level ≈ 1/3–1/10 that of standard HZ series - directly reduces voltage reference jitter in ADC/DAC biasing |
| Stable low-current regulation | Specified at IZ = 0.5 mA - enables use in ultra-low-power reference circuits without minimum-load resistors |
| Controlled temperature drift | γZ ≈ −0.06 %/°C near 27 V - simplifies thermal compensation in precision instrumentation |
| High reliability packaging | DO-35 glass-sealed construction - provides hermetic stability and long-term parameter retention in humid or thermally cycled environments |
Applications
| High-Precision Voltage Reference | Low-Noise Analog Front-End Biasing |
|---|---|
Use Scenario: Providing stable excitation voltage for strain gauge bridges or RTD measurement circuits in industrial sensors. IC Role / Device Role / Timing Role: Two-terminal passive voltage reference establishing fixed bias point for differential amplifiers and instrumentation op-amps. Use Value: 150 Ω dynamic resistance and −0.06 %/°C TC minimize gain error drift and noise-induced offset variation over temperature and time. |
Use Scenario: Setting clean bias points for low-noise preamplifiers in audio ADCs or medical ECG front-ends. IC Role / Device Role / Timing Role: Low-noise Zener source replacing higher-noise alternatives in op-amp input stage references. Use Value: Noise reduction to 1/3–1/10 of standard HZ diodes directly lowers system SNR floor in sub-mV signal chains. |
| Stabilized Power Supply Shunt Regulator | Overvoltage Protection Clamp |
Use Scenario: Maintaining regulated 27 V rail for analog subsystems in mixed-signal microcontroller boards. IC Role / Device Role / Timing Role: Shunt regulator absorbing excess current when input exceeds 27.2–28.6 V threshold. Use Value: 400 mW power rating and low rd allow stable regulation across 0.5–15 mA load range without external pass transistor. |
Use Scenario: Clamping transient surges on 24 V industrial control lines to protect downstream logic and ADC inputs. IC Role / Device Role / Timing Role: Fast-acting voltage clamp limiting peak excursion to ≤28.6 V during ESD or inductive kick events. Use Value: Low leakage (1 μA max at 20.2 V) prevents false triggering; DO-35 package enables direct PCB-level placement at I/O connectors. |
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 |
|---|---|---|---|
| 1N5258BRLG (ON Semiconductor) | Zener voltage 27 V ±5% (25.65–28.35 V); rd = 200 Ω max at 20 mA - higher dynamic impedance and different test current | Designed for general-purpose regulation at higher IZ; less suitable for low-current, low-noise biasing | Select HZ27CPTK-E when noise, low-IZ stability, or tighter VZ tolerance at 0.5 mA are critical |
| BZX84-C27LT1G (onsemi) | SOT-23 surface-mount; VZ = 27 V ±5%; rd = 180 Ω at 5 mA - smaller footprint but higher test current and noise vs. HZ-L series | Optimized for space-constrained digital systems; lacks low-noise optimization and DO-35 thermal mass | Choose HZ27CPTK-E for through-hole mounting, superior noise performance, and proven stability in analog instrumentation |
Compared with 1N5258BRLG and BZX84-C27LT1G, the HZ27CPTK-E offers uniquely low noise, tighter low-current VZ specification, and DO-35 thermal robustness-making it preferred for precision analog reference and low-drift sensor conditioning where signal integrity outweighs board area constraints.
Availability
HZ27CPTK-E is available at Aetrix Electronics and suitable for precision voltage reference, low-noise analog biasing, and shunt-regulated power supply applications requiring stable component supply, long-term parameter consistency, and traceable sourcing for industrial and test equipment manufacturing.
Supply support for HZ27CPTK-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 leader delivering microcontrollers, analog, power, and timing solutions for automotive, industrial, and enterprise systems.
The HZ-L Series was developed specifically for low-noise voltage reference applications in precision analog circuits, emphasizing reduced diode noise, tight zener voltage tolerance at low test currents, and stable thermal behavior across industrial temperature ranges.
FAQ
What is the exact zener voltage range for HZ27CPTK-E?
The HZ27CPTK-E has a guaranteed zener voltage range of 27.2 V minimum to 28.6 V maximum when tested at IZ = 0.5 mA and Ta = 25°C. This range reflects the "HZ27-3L" variant within the HZ-L family and is confirmed in Renesas document REJ03G0182-0300 Rev.3.00, Page 3.
Is HZ27CPTK-E compatible with standard DO-35 footprints?
Yes, the HZ27CPTK-E uses the DO-35 package (JEITA code GRZZ0002ZB-A) with standardized axial lead spacing and dimensions: body diameter ≈ 2.0 mm, length ≈ 26 mm, lead diameter ≈ 0.5 mm. It is mechanically and solder-process compatible with all industry-standard DO-35 sockets and PCB land patterns.
Does HZ27CPTK-E have a specified noise voltage value?
Renesas does not publish absolute nanovolt-level noise voltage for HZ27CPTK-E, but specifies that the entire HZ-L Series achieves diode noise approximately 1/3 to 1/10 lower than the legacy HZ Series. This comparative metric is validated in low-frequency (<10 kHz) analog reference applications per REJ03G0182-0300, Page 1.
What is the maximum reverse leakage current for HZ27CPTK-E?
The HZ27CPTK-E has a maximum reverse leakage current (IR) of 1 μA when measured at VR = 20.2 V and Ta = 25°C. This low leakage supports high-impedance bias networks and minimizes error in precision current-source or reference-divider configurations.
Can HZ27CPTK-E be used in surface-mount designs?
No - the HZ27CPTK-E is exclusively offered in the through-hole DO-35 glass axial package. It is not available in SMT variants such as SOD-123 or SOT-23. For surface-mount alternatives, engineers should evaluate functionally similar but not pin-compatible parts like BZX84-C27LT1G, noting differences in test current, noise, and thermal behavior.
HZ27CPTK-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:
- -
HZ27CPTK-E FAQ
1.How can I place an order for HZ27CPTK-E through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ27CPTK-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 HZ27CPTK-E reliable?
The price and inventory of HZ27CPTK-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ27CPTK-E is usually 5 days.
3.What payment methods are accepted for HZ27CPTK-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ27CPTK-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ27CPTK-E?
HZ27CPTK-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ27CPTK-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 HZ27CPTK-E?
For technical support, including HZ27CPTK-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ27CPTK-E requirements.
6.How does Aetrix verify that HZ27CPTK-E is sourced from the original manufacturer or authorized distributors?
All HZ27CPTK-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 HZ27CPTK-E meets industry standards.
7.What is the process for return or replacement of HZ27CPTK-E?
All HZ27CPTK-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ27CPTK-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 HZ27CPTK-E part is unused and in its original packaging.
Return procedure for HZ27CPTK-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
HZ27CPTK-E Tags
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