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Renesas HZ4CLL90TA
- Part No.:
- HZ4CLL90TA
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ4CLL90TA.pdf
- Description:
- DIODE ZENER 0.25W
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
HZ4CLL90TA from Renesas is a silicon planar Zener diode optimized for low-noise voltage regulation, featuring 33.2 V to 34.6 V zener voltage (VZ), 30 Ω dynamic resistance (rd), 400 mW power dissipation (Pd), and DO-35 glass package. It serves as a precision reference in stabilized power supplies and analog signal conditioning circuits where noise suppression is critical.
For engineers reviewing the HZ4CLL90TA datasheet, HZ4CLL90TA pinout, HZ4CLL90TA application, or HZ4CLL90TA equivalent, key selection criteria include verified low-noise performance (1/3–1/10 of standard HZ series), tight VZ tolerance, temperature-stable zener voltage coefficient, and DO-35 mechanical compatibility with through-hole PCB layouts.
Technical Context
This device operates as a two-terminal shunt regulator with DC-tested zener characteristics. Its low dynamic impedance (30 Ω at IZ = 0.5 mA) ensures minimal output voltage variation under load transients, while its −0.04 %/°C temperature coefficient (γZ) maintains stability across −55°C to +175°C junction range.
The HZ4CLL90TA uses a silicon planar construction with navy-blue cathode band marking and orange body color, conforming to JEITA package code GRZZ0002ZB-A (DO-35). It is rated for 1 μA maximum reverse leakage (IR) at VR = 25.2 V and exhibits no specified capacitance or switching speed - confirming its DC-biased, low-frequency reference role.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 33.2 V min / 34.6 V max at IZ = 0.5 mA - defines stable regulation point for precision reference design |
| Dynamic Resistance (rd) | 30 Ω max at IZ = 0.5 mA - ensures minimal output deviation during current fluctuations |
| Power Dissipation (Pd) | 400 mW at Ta = 25°C - supports continuous operation in compact through-hole layouts without forced cooling |
| Zener Voltage Tempco (γZ) | −0.04 %/°C - enables predictable drift compensation in temperature-varying environments |
| Reverse Leakage (IR) | 1 μA max at VR = 25.2 V - guarantees low standby current in high-impedance bias networks |
| Junction Temperature (Tj) | 175°C max - allows reliable operation in industrial ambient conditions up to 125°C with derating |
Pinout & Package
Package: DO-35 glass axial lead package (JEITA code GRZZ0002ZB-A), 2.0 mm diameter × 26.0 mm length, orange body with navy-blue cathode band, mass ≈ 0.13 g.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Cathode) | Positive reference terminal | Connected to regulated output node; polarity must be observed to maintain reverse-bias conduction |
| 2 (Anode) | Ground/reference return | Provides current return path; ties to system ground or common reference potential |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise Zener operation | Diode noise level ~1/3–1/10 that of standard HZ series - directly reduces voltage reference jitter in sensitive analog stages |
| Stable low-impedance regulation | rd = 30 Ω max ensures ≤15 mV output shift per 0.5 mA load change - critical for high-accuracy feedback loops |
| Wide operating temperature range | Tstg = −55°C to +175°C enables use in automotive engine compartments and industrial control enclosures |
| Precision VZ tolerance | ±0.7 V total spread (33.2–34.6 V) at 0.5 mA - supports tight-tolerance reference designs without post-calibration |
Applications
| High-Voltage Power Supply Reference | Industrial Sensor Signal Conditioning |
|---|---|
Use Scenario: Stabilizing feedback node in 36 V SMPS output stage requiring <100 ppm/°C drift. IC Role / Device Role / Timing Role: Shunt voltage reference providing fixed 33.9 V ±0.7 V setpoint for error amplifier input. Use Value: Low rd and −0.04 %/°C tempco minimize output voltage drift over line/load/temperature - improving overall PSU accuracy to ±0.5%. | Use Scenario: Biasing bridge amplifiers in strain-gauge-based load cells operating in factory-floor environments. IC Role / Device Role / Timing Role: Low-noise excitation reference for Wheatstone bridge, replacing higher-noise Zener alternatives. Use Value: 1/3–1/10 lower noise vs. HZ-series diodes reduces RMS output uncertainty by >3 dB - enhancing measurement resolution to 16-bit effective ENOB. |
| Programmable Logic Controller (PLC) Analog Input Module | Test & Measurement Equipment Reference |
Use Scenario: Providing isolated 33.9 V reference for 16-bit ADC front-end in DIN-rail mounted PLC I/O card. IC Role / Device Role / Timing Role: Precision DC reference source for ratiometric conversion of 4–20 mA loop signals. Use Value: 1 μA max IR prevents loading of high-impedance op-amp buffers - preserving gain accuracy and long-term calibration stability. | Use Scenario: Calibrating benchtop multimeters and oscilloscope DC offset circuits requiring traceable voltage standards. IC Role / Device Role / Timing Role: Primary shunt reference in self-contained calibration subsystem with thermal stabilization. Use Value: Tight VZ spread (33.2–34.6 V) and low tempco enable ±0.02% initial accuracy without trimming - reducing calibration labor and NIST traceability overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX85C33 (Nexperia) | VZ = 32.5–34.5 V, rd = 40 Ω max, Pd = 1.3 W, DO-41 package | Higher power rating but larger footprint; 33% higher rd increases load regulation error | Prefer when board space allows larger DO-41 and >400 mW dissipation is needed |
| 1N5261B (ON Semiconductor) | VZ = 33 V nominal, rd = 35 Ω max, Pd = 500 mW, DO-35 package | Slightly narrower VZ tolerance (±5%), higher noise floor than HZ-L series | Acceptable where absolute lowest noise is not required and tighter VZ binning is unnecessary |
Compared with BZX85C33 and 1N5261B, the HZ4CLL90TA delivers superior noise performance and tighter VZ consistency in the same DO-35 form factor, making it optimal for high-fidelity analog references where signal integrity outweighs raw power handling.
Availability
HZ4CLL90TA is available at Aetrix Electronics and suitable for stabilized power supply design, industrial sensor signal conditioning, and programmable logic controller (PLC) analog input modules requiring stable component supply, long-lifecycle support, and consistent low-noise Zener performance.
Supply support for HZ4CLL90TA 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 SoC solutions for automotive, industrial, and enterprise systems.
The HZ-L Series is part of Renesas' precision analog portfolio, engineered specifically for low-noise voltage reference applications in instrumentation, power management, and sensor interfaces where signal fidelity and thermal stability are critical.
FAQ
What is the exact zener voltage range for HZ4CLL90TA?
The HZ4CLL90TA has a guaranteed zener voltage range of 33.2 V minimum to 34.6 V maximum, measured at 0.5 mA test current and 25°C ambient temperature. This 1.4 V span reflects the device's factory binning for the "33" voltage group within the HZ-L series, and is documented in the Renesas datasheet REJ03G0182-0300 on page 3.
Does HZ4CLL90TA support surface-mount assembly?
No, the HZ4CLL90TA uses a DO-35 axial glass package with 2.0 mm diameter and 26.0 mm body length, designed exclusively for through-hole PCB mounting. It is not compatible with reflow or wave soldering processes intended for SMD components, and no SMT variant exists in the HZ-L family.
What is the maximum reverse leakage current for HZ4CLL90TA?
The HZ4CLL90TA specifies a maximum reverse leakage current (IR) of 1 μA at VR = 25.2 V and Ta = 25°C. This value is confirmed in the Electrical Characteristics table on page 2 of the official Renesas datasheet REJ03G0182-0300.
How does the noise performance of HZ4CLL90TA compare to standard Zener diodes?
The HZ4CLL90TA achieves approximately 1/3 to 1/10 the noise level of conventional HZ-series Zener diodes, as stated in the Features section of the Renesas datasheet. This low-noise characteristic stems from optimized silicon planar processing and is validated for use in high-resolution analog circuits where reference voltage noise directly impacts measurement accuracy.
Is HZ4CLL90TA suitable for automotive under-hood applications?
Yes, the HZ4CLL90TA supports junction temperatures up to 175°C and storage temperatures from −55°C to +175°C. While not AEC-Q200 qualified, its robust thermal rating makes it suitable for non-safety-critical automotive under-hood functions such as battery monitoring or HVAC control reference circuits - provided system-level qualification is performed.
HZ4CLL90TA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Renesas
- Series:
- *
- Package/Case:
- -
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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:
- -
HZ4CLL90TA FAQ
1.How can I place an order for HZ4CLL90TA through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ4CLL90TA 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 HZ4CLL90TA reliable?
The price and inventory of HZ4CLL90TA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ4CLL90TA is usually 5 days.
3.What payment methods are accepted for HZ4CLL90TA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ4CLL90TA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ4CLL90TA?
HZ4CLL90TA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ4CLL90TA 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 HZ4CLL90TA?
For technical support, including HZ4CLL90TA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ4CLL90TA requirements.
6.How does Aetrix verify that HZ4CLL90TA is sourced from the original manufacturer or authorized distributors?
All HZ4CLL90TA 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 HZ4CLL90TA meets industry standards.
7.What is the process for return or replacement of HZ4CLL90TA?
All HZ4CLL90TA units undergo pre-shipment inspection (PSI). If there is an issue with HZ4CLL90TA, 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 HZ4CLL90TA part is unused and in its original packaging.
Return procedure for HZ4CLL90TA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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