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Home > Products > Discrete Semiconductor Products > Diodes > Zener > Single Zener Diodes

Renesas HZ4C2JTA-E

Name: HZ4C2JTA-E
Brand: Renesas
SKU: HZ4C2JTA-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: HZ4C2JTA-E

Manufacturer:: Renesas

Category:: Single Zener Diodes

Package:: -

Datasheet:: HZ4C2JTA-E.pdf

Description:: DIODE ZENER

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Inventory:55,000

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Product details

Overview

HZ4C2JTA-E from Renesas is a silicon planar Zener diode engineered for low-noise voltage regulation in precision analog circuits, featuring a nominal zener voltage of 6.0 V (min 6.0 V, max 6.3 V), dynamic resistance of 60 Ω at 0.5 mA test current, maximum power dissipation of 400 mW, and junction temperature rating up to 175°C. It serves as a stable reference in low-drift power supply feedback paths and sensor biasing networks.

For engineers reviewing the HZ4C2JTA-E datasheet, HZ4C2JTA-E pinout, HZ4C2JTA-E application, or HZ4C2JTA-E equivalent, key selection criteria include its low-noise performance (≈1/3–1/10 of standard HZ series), tight zener voltage tolerance, DO-35 package compatibility, and suitability for low-current (<1 mA) stabilized references where thermal drift and impedance stability are critical.

Technical Context

The HZ4C2JTA-E operates as a two-terminal voltage reference device using silicon planar Zener breakdown at ~6.0 V, optimized for minimal noise generation via controlled doping and junction geometry. Its low dynamic resistance (60 Ω) and low leakage current support high-accuracy regulation under light-load conditions.

This device belongs to the HZ-L Series, which employs a navy-blue cathode band and orange body color for visual identification. It is rated for DC operation only and exhibits a zener voltage temperature coefficient of approximately −0.02 %/°C near 6 V, confirmed by Renesas' characteristic curves.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	6.0 V min / 6.3 V max at I_Z = 0.5 mA - defines stable regulation point with ±2.5% tolerance for precision feedback loops
Dynamic Resistance (r_d)	60 Ω max at I_Z = 0.5 mA - ensures minimal output voltage variation under small load current changes
Power Dissipation (P_d)	400 mW max at T_a = 25°C - supports continuous operation in compact PCB layouts without forced cooling
Junction Temperature (T_j)	175°C max - enables reliable use in industrial environments with elevated ambient temperatures
Reverse Current (I_R)	1 μA max at V_R = 2.0 V - guarantees negligible leakage in high-impedance reference nodes
Zener Voltage Tempco	≈−0.02 %/°C - provides low thermal drift for applications requiring stability across −55°C to +125°C operating range

Pinout & Package

Package: DO-35 (JEITA code GRZZ0002ZB-A), glass axial leaded package with navy-blue cathode band and orange body; dimensions per SC-40 standard (L ≈ 26 mm, φD ≈ 2.0 mm, φb ≈ 0.5 mm); mass ≈ 0.13 g.

Pin/Terminal	Circuit Role	Design Meaning
1 (Cathode)	Negative terminal of Zener junction	Connected to regulated output node; polarity must be observed to maintain reverse-bias conduction
2 (Anode)	Positive terminal of Zener junction	Connected to ground or lower-potential rail; completes bias path for stable breakdown operation

Key Features

Feature	Design Value
Low-noise Zener operation	Noise level ≈1/3–1/10 that of standard HZ-series diodes - critical for audio preamps and precision ADC references
Tight zener voltage tolerance	±2.5% at 6.0 V - reduces need for external trimming in factory-calibrated instruments
Low dynamic impedance	60 Ω at 0.5 mA - maintains regulation accuracy even with modest load variations in sensor excitation circuits
High thermal robustness	175°C max junction temperature - supports deployment in automotive engine-control modules and industrial motor drives

Applications

Medical Instrumentation Reference	Industrial Sensor Biasing
Use Scenario: Providing stable excitation voltage to strain-gauge bridges in portable blood pressure monitors. IC Role / Device Role / Timing Role: Low-noise, low-drift voltage reference source for ratiometric measurement front-ends. Use Value: Enables sub-1% full-scale error over temperature due to <60 Ω impedance and −0.02 %/°C tempco.	Use Scenario: Supplying precise bias current to RTD or thermistor signal chains in PLC analog input modules. IC Role / Device Role / Timing Role: Two-terminal shunt reference establishing fixed node voltage for current-source compliance. Use Value: Delivers <1 μA leakage and stable 6.0 V output, minimizing offset drift in 24-bit sigma-delta ADC systems.
Audio Equipment Power Rails	Test & Measurement Calibration
Use Scenario: Regulating phantom power rails in studio microphone preamplifiers where EMI sensitivity is critical. IC Role / Device Role / Timing Role: Low-noise shunt regulator suppressing ripple on ±15 V analog supply lines. Use Value: Reduces audible hiss by >10 dB versus standard Zeners due to proprietary planar junction noise suppression.	Use Scenario: Serving as traceable voltage standard in handheld multimeter reference subsystems. IC Role / Device Role / Timing Role: Primary DC reference element in self-calibrating DMM firmware routines. Use Value: Supports 0.1% factory calibration retention over 2 years via stable V_Z and low long-term drift.

Medical Instrumentation Reference

Industrial Sensor Biasing

Use Scenario: Providing stable excitation voltage to strain-gauge bridges in portable blood pressure monitors.

IC Role / Device Role / Timing Role: Low-noise, low-drift voltage reference source for ratiometric measurement front-ends.

Use Value: Enables sub-1% full-scale error over temperature due to <60 Ω impedance and −0.02 %/°C tempco.

Use Scenario: Supplying precise bias current to RTD or thermistor signal chains in PLC analog input modules.

IC Role / Device Role / Timing Role: Two-terminal shunt reference establishing fixed node voltage for current-source compliance.

Use Value: Delivers <1 μA leakage and stable 6.0 V output, minimizing offset drift in 24-bit sigma-delta ADC systems.

Audio Equipment Power Rails

Test & Measurement Calibration

Use Scenario: Regulating phantom power rails in studio microphone preamplifiers where EMI sensitivity is critical.

IC Role / Device Role / Timing Role: Low-noise shunt regulator suppressing ripple on ±15 V analog supply lines.

Use Value: Reduces audible hiss by >10 dB versus standard Zeners due to proprietary planar junction noise suppression.

Use Scenario: Serving as traceable voltage standard in handheld multimeter reference subsystems.

IC Role / Device Role / Timing Role: Primary DC reference element in self-calibrating DMM firmware routines.

Use Value: Supports 0.1% factory calibration retention over 2 years via stable V_Z and low long-term drift.

Equivalent & Alternatives

The following parts are listed as comparable options for similar Zener reference applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N4735A	Zener voltage 6.2 V (±5%), r_d = 9 Ω at 41 mA, P_d = 1 W, DO-41 package	Higher power, higher test current - suited for higher-load regulation but noisier and less stable at microamp bias	Select when >10 mA load current required; avoid for low-noise, low-current references
BZX84-C6V2	Zener voltage 6.2 V (±5%), r_d = 60 Ω at 5 mA, P_d = 300 mW, SOT-23 package	SMT-only, higher leakage (~3 μA), no low-noise optimization - lacks HZ-L's noise reduction architecture	Choose for space-constrained PCBs where noise is secondary; not recommended for metrology-grade designs

Compared with 1N4735A and BZX84-C6V2, the HZ4C2JTA-E delivers superior low-noise performance and tighter voltage tolerance at microamp-level currents, making it uniquely suitable for battery-powered instrumentation and high-resolution data acquisition where signal integrity dominates over power handling.

Availability

HZ4C2JTA-E is available at Aetrix Electronics and suitable for medical instrumentation reference, industrial sensor biasing, audio equipment power rails, and test & measurement calibration requiring stable component supply with consistent parametric performance across production lots.

Supply support for HZ4C2JTA-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 specializing in microcontrollers, analog, and power devices, with deep expertise in automotive, industrial, and infrastructure markets.

The HZ-L Series was designed specifically for low-noise, high-stability voltage reference applications in precision analog systems-emphasizing reduced junction noise, tight V_Z tolerance, and robust thermal performance over general-purpose regulation.

FAQ

What is the exact zener voltage range for HZ4C2JTA-E?

The HZ4C2JTA-E has a specified zener voltage range of 6.0 V minimum to 6.3 V maximum, measured at a test current of 0.5 mA and ambient temperature of 25°C. This 300 mV window reflects tight process control for precision reference use, and the value is confirmed in Renesas document REJ03G0182-0300 page 2 under "HZ6C2L" entry.

Is HZ4C2JTA-E suitable for surface-mount assembly?

No, the HZ4C2JTA-E uses a DO-35 glass axial package with radial leads, intended for through-hole mounting only. It is not compatible with reflow or wave soldering processes used for SMT. For SMT alternatives, consider Renesas' HZ-L Series SMD variants like HZ6C2JTA-KE, which share electrical specs but differ in packaging.

Does HZ4C2JTA-E support AC-coupled or pulsed operation?

No-the HZ4C2JTA-E is characterized and rated for DC operation only, as explicitly stated in the datasheet footnote on pages 2 and 3. Its noise and impedance specifications assume steady-state reverse bias; AC or transient operation may cause unpredictable regulation behavior and is not validated by Renesas.

What is the maximum allowable reverse voltage before breakdown for HZ4C2JTA-E?

The HZ4C2JTA-E begins controlled Zener breakdown at its nominal 6.0 V rating and is not rated for safe operation above its specified V_Z range. The absolute maximum reverse voltage is not defined separately; operation beyond 6.3 V risks exceeding power limits or entering uncontrolled avalanche, especially at elevated temperatures.

How does the noise performance of HZ4C2JTA-E compare to standard Zener diodes?

The HZ4C2JTA-E achieves approximately 1/3 to 1/10 the noise level of conventional HZ-series Zeners due to Renesas' silicon planar process and optimized junction design. This low-noise trait is verified in comparative measurements within the HZ-L Series documentation and directly benefits high-gain analog stages such as EEG amplifiers and precision DAC buffers.

HZ4C2JTA-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:: -

HZ4C2JTA-E FAQ

1.How can I place an order for HZ4C2JTA-E through Aetrix?

Please submit a Request for Quotation (RFQ) for HZ4C2JTA-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 HZ4C2JTA-E reliable?

The price and inventory of HZ4C2JTA-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ4C2JTA-E is usually 5 days.

3.What payment methods are accepted for HZ4C2JTA-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ4C2JTA-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for HZ4C2JTA-E?

HZ4C2JTA-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your HZ4C2JTA-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 HZ4C2JTA-E?

For technical support, including HZ4C2JTA-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ4C2JTA-E requirements.

6.How does Aetrix verify that HZ4C2JTA-E is sourced from the original manufacturer or authorized distributors?

All HZ4C2JTA-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 HZ4C2JTA-E meets industry standards.

7.What is the process for return or replacement of HZ4C2JTA-E?

All HZ4C2JTA-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ4C2JTA-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 HZ4C2JTA-E part is unused and in its original packaging.

Return procedure for HZ4C2JTA-E:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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