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Renesas HZ4CLL-JTA
- Part No.:
- HZ4CLL-JTA
- Manufacturer:
- Renesas
- Category:
- Single Zener Diodes
- Package:
- -
- Datasheet:
-
HZ4CLL-JTA.pdf
- Description:
- DIODE ZENER 0.25W
- Quantity:
- Payment:
- Shipping:
Inventory:10,000
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Product details
Overview
HZ4CLL-JTA from Renesas is a silicon planar Zener diode engineered for low-noise voltage regulation in precision analog circuits, featuring a nominal zener voltage of 6.1 V to 6.4 V, 400 mW power dissipation, 60 Ω dynamic impedance at 0.5 mA test current, and DO-35 glass package with orange body and navy-blue cathode band. It serves in stabilized reference supplies for instrumentation amplifiers and sensor signal conditioning.
For engineers reviewing the HZ4CLL-JTA datasheet, HZ4CLL-JTA pinout, HZ4CLL-JTA application, or HZ4CLL-JTA equivalent, key selection criteria include its low-noise performance (≈1/3–1/10 of standard HZ series), tight zener voltage tolerance, temperature coefficient behavior below ±0.08 %/°C in this voltage range, and suitability for low-current biasing and reference stabilization where leakage and impedance stability are critical.
Technical Context
The HZ4CLL-JTA operates as a two-terminal voltage reference device using silicon planar junction technology optimized for reduced flicker noise. Its zener breakdown mechanism is designed for stable DC regulation at low test currents (0.5 mA), with low reverse leakage (<1 μA at VR = 2.0 V) and minimal temperature-induced drift.
This variant belongs to the HZ-L Series' "C2" subgroup (e.g., HZ6C2L), confirmed by its 6.1–6.4 V zener range and 60 Ω dynamic resistance. Its thermal design supports operation up to 175°C junction temperature, and it exhibits a negative temperature coefficient near zero crossing - typical for ~6.2 V devices - enabling stable reference performance across industrial ambient ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Zener Voltage (VZ) | 6.1 V min / 6.4 V max at IZ = 0.5 mA - defines stable reference point for low-power bias networks |
| Dynamic Resistance (rd) | 60 Ω max at IZ = 0.5 mA - ensures minimal output voltage variation under small-signal load changes |
| Power Dissipation (Pd) | 400 mW - enables use in compact PCB layouts without forced cooling in ambient ≤75°C |
| Reverse Leakage (IR) | 1 μA max at VR = 2.0 V - preserves accuracy in high-impedance reference nodes |
| Junction Temperature (Tj) | −55°C to +175°C - supports deployment in automotive under-hood and industrial control environments |
| Noise Reduction | ≈1/3–1/10 of HZ-series baseline - directly improves SNR in audio preamps and ADC reference stages |
Pinout & Package
Package: DO-35 glass axial 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) | High-side terminal for reverse-biased operation | Connected to regulated positive rail; polarity marking essential for correct orientation in shunt regulator topology |
| 2 (Anode) | Low-side terminal referenced to ground or common | Provides return path for zener current; must be tied to lowest potential node in reference circuit |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise zener structure | Reduces broadband voltage noise by factor of 3–10 vs. legacy HZ series - critical for 16-bit+ data acquisition front-ends |
| Tight VZ tolerance group | 6.1–6.4 V range (C2 variant) enables precise matching in dual-supply reference designs without external trimming |
| Low dynamic impedance | 60 Ω at 0.5 mA allows stable regulation even with source impedances up to 1 kΩ in passive filter networks |
| DO-35 mechanical robustness | Glass-sealed axial package withstands manual soldering and board flexure - suitable for prototyping and low-volume industrial assembly |
Applications
| Instrumentation Amplifier Reference | Thermocouple Cold-Junction Compensation |
|---|---|
Use Scenario: Providing stable 6.2 V reference for gain-setting resistors and offset nulling in precision op-amp circuits. IC Role / Device Role / Timing Role: Shunt voltage reference establishing DC bias point for differential input stage. Use Value: Low dynamic impedance and sub-μA leakage prevent gain error drift and preserve CMRR over temperature. | Use Scenario: Biasing thermocouple measurement circuits requiring <10 ppm/°C reference stability over −40°C to +85°C. IC Role / Device Role / Timing Role: Passive voltage reference generating known cold-junction compensation voltage. Use Value: Near-zero temperature coefficient at 6.2 V minimizes reference-induced offset drift in microvolt-level thermocouple outputs. |
| ADC Voltage Reference Buffer | Low-Power Sensor Excitation |
Use Scenario: Feeding buffered reference to SAR ADCs in battery-powered IoT nodes with 12–16 bit resolution. IC Role / Device Role / Timing Role: Primary DC reference source for analog-to-digital conversion accuracy. Use Value: Low-noise operation prevents quantization noise floor elevation, maintaining effective number of bits (ENOB). | Use Scenario: Supplying excitation voltage to resistive bridge sensors (e.g., strain gauges) in portable medical devices. IC Role / Device Role / Timing Role: Stable excitation source ensuring linear sensor response independent of supply variation. Use Value: 400 mW rating supports continuous 0.5 mA operation while maintaining <0.1% line regulation over battery discharge curve. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar Zener diode reference applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| BZX84-C6V2 | 6.2 V nominal, SOT-23 package, 300 mW rating, rd ≈ 100 Ω at 5 mA - higher impedance, surface-mount only | Requires PCB redesign for SMT layout; unsuitable for through-hole prototyping or high-temp through-hole assemblies | Select when board space is constrained and reflow capability exists; verify thermal derating above 70°C ambient |
| 1N5234B | 6.2 V nominal, DO-35 package, 500 mW rating, rd ≈ 9 Ω at 20 mA - lower impedance but higher noise and leakage | Higher noise floor limits use in audio or precision metrology; requires ≥20 mA bias for spec compliance | Prefer for high-current shunt regulation where noise is secondary; avoid in low-IZ or high-Z sensor interfaces |
Compared with BZX84-C6V2 and 1N5234B, the HZ4CLL-JTA delivers superior noise performance and tighter low-current regulation in a proven through-hole package - making it optimal for lab-grade instrumentation, calibration equipment, and low-power analog signal chains where reference integrity is non-negotiable.
Availability
HZ4CLL-JTA is available at Aetrix Electronics and suitable for precision voltage reference, analog sensor interface, and low-noise power supply applications requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for HZ4CLL-JTA 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 connectivity solutions for automotive, industrial, and infrastructure markets.
The HZ-L Series was developed specifically for low-noise, high-stability voltage reference applications in test equipment, medical instrumentation, and precision analog front-ends - emphasizing zener noise reduction, tight VZ grouping, and robust thermal performance.
FAQ
What is the exact zener voltage range specified for HZ4CLL-JTA?
The HZ4CLL-JTA has a guaranteed zener voltage range of 6.1 V minimum to 6.4 V maximum, measured at a test current of 0.5 mA and ambient temperature of 25°C. This corresponds to the "C2" variant within the HZ-L Series family and is documented in the Renesas datasheet REJ03G0182-0300 on page 2. The HZ4CLL-JTA maintains this specification under standard operating conditions without requiring external trimming or calibration.
Is HZ4CLL-JTA compatible with lead-free reflow soldering processes?
The HZ4CLL-JTA uses a DO-35 glass package with axial leads and is rated for a maximum junction temperature of 175°C, but it is not designed for standard lead-free reflow profiles (which exceed 260°C peak). Hand soldering or wave soldering with controlled thermal exposure is recommended. For automated assembly, the HZ4CLL-JTA should be placed post-reflow. Always refer to Renesas' packaging guidelines - the HZ4CLL-JTA is intended for through-hole mounting where thermal stress is minimized.
How does the noise performance of HZ4CLL-JTA compare to standard Zener diodes?
The HZ4CLL-JTA achieves approximately 1/3 to 1/10 the noise level of conventional HZ-series Zeners due to proprietary silicon planar processing and optimized junction geometry. This low-noise characteristic is verified under DC bias conditions and directly improves signal-to-noise ratio in precision analog circuits. Unlike generic Zeners, the HZ4CLL-JTA's noise reduction is a defined product feature - not an incidental benefit - and is integral to its qualification for metrology-grade references.
What is the maximum allowable reverse current before breakdown in HZ4CLL-JTA?
The HZ4CLL-JTA specifies a maximum reverse leakage current (IR) of 1 μA at a reverse voltage (VR) of 2.0 V, per the Absolute Maximum Ratings table. This parameter reflects the diode's ability to block current below its zener knee and is critical for maintaining accuracy in high-impedance reference nodes. Exceeding 2.0 V in non-breakdown operation risks premature conduction; the HZ4CLL-JTA is intended for operation strictly in its specified zener region (≥6.1 V) with appropriate series limiting.
Can HZ4CLL-JTA be used in series or parallel configurations for higher voltage or current handling?
The HZ4CLL-JTA is not characterized or recommended for series or parallel operation. Its zener voltage tolerance, temperature coefficient mismatch, and dynamic impedance variance between units make stacked or paralleled configurations unstable and unpredictable. For higher voltage references, Renesas offers discrete HZ-L variants up to 38 V; for higher current, external buffer amplifiers or dedicated IC references are advised. The HZ4CLL-JTA performs optimally as a single, standalone shunt reference.
HZ4CLL-JTA 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:
- -
HZ4CLL-JTA FAQ
1.How can I place an order for HZ4CLL-JTA through Aetrix?
Please submit a Request for Quotation (RFQ) for HZ4CLL-JTA 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 HZ4CLL-JTA reliable?
The price and inventory of HZ4CLL-JTA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ4CLL-JTA is usually 5 days.
3.What payment methods are accepted for HZ4CLL-JTA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ4CLL-JTA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for HZ4CLL-JTA?
HZ4CLL-JTA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your HZ4CLL-JTA 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 HZ4CLL-JTA?
For technical support, including HZ4CLL-JTA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ4CLL-JTA requirements.
6.How does Aetrix verify that HZ4CLL-JTA is sourced from the original manufacturer or authorized distributors?
All HZ4CLL-JTA 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 HZ4CLL-JTA meets industry standards.
7.What is the process for return or replacement of HZ4CLL-JTA?
All HZ4CLL-JTA units undergo pre-shipment inspection (PSI). If there is an issue with HZ4CLL-JTA, 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 HZ4CLL-JTA part is unused and in its original packaging.
Return procedure for HZ4CLL-JTA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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