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

Renesas HZ4C3RE-E

Name: HZ4C3RE-E
Brand: Renesas
SKU: HZ4C3RE-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: HZ4C3RE-E

Manufacturer:: Renesas

Category:: Single Zener Diodes

Package:: -

Datasheet:: HZ4C3RE-E.pdf

Description:: DIODE ZENER 0.5W

Quantity:: RFQ Add To RFQ list

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Inventory:22,000

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Product details

Overview

HZ4C3RE-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 6.4 V (min 6.1 V, max 6.4 V), dynamic resistance of 60 Ω at 0.5 mA, maximum power dissipation of 400 mW, and junction temperature rating up to 175°C - deployed in stabilized power supplies and reference voltage sources for instrumentation.

For engineers reviewing the HZ4C3RE-E datasheet, HZ4C3RE-E pinout, HZ4C3RE-E application, or HZ4C3RE-E equivalent, key selection criteria include low noise performance (≈1/3–1/10 of standard HZ series), tight zener voltage tolerance, low leakage current (<1 μA at VR = 2.0 V), and DO-35 package compatibility with through-hole PCB layouts requiring thermal stability and long-term voltage drift control.

Technical Context

The HZ4C3RE-E operates as a two-terminal shunt regulator with DC-tested zener breakdown characteristics, designed for stable biasing and voltage reference functions where low dynamic impedance and minimal temperature-induced drift are critical. Its zener voltage exhibits a temperature coefficient near zero crossing (~0.02 %/°C) within the 6.1–6.4 V range, enabling high-accuracy references without external compensation.

Manufactured using silicon planar process technology, the device achieves low noise via optimized junction geometry and controlled doping profiles. It is rated for continuous operation up to 175°C junction temperature and supports reverse current testing at 0.5 mA - consistent with industry-standard zener characterization methods for low-power analog systems.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	6.1 V (min) to 6.4 V (max) at I_Z = 0.5 mA - defines precise regulation threshold for low-drift reference designs.
Dynamic Resistance (r_d)	60 Ω max at I_Z = 0.5 mA - ensures minimal output voltage variation under load transients.
Power Dissipation (P_d)	400 mW max at T_a = 25°C - supports compact PCB layout without forced cooling in low-power analog rails.
Reverse Current (I_R)	<1 μA max at V_R = 2.0 V - enables ultra-low quiescent current in battery-backed or energy-sensitive circuits.
Junction Temperature (T_j)	−55°C to +175°C - allows deployment in industrial and automotive under-hood environments with wide ambient swings.
Noise Level	≈1/3–1/10 that of standard HZ-series diodes - directly improves SNR in audio preamps, sensor front-ends, and ADC reference stages.

Pinout & Package

Package: DO-35 glass axial leaded package (JEITA code GRZZ0002ZB-A), orange body color, navy blue cathode band. Dimensions per SC-40 standard: φD = 2.0 mm, L = 26.0 mm, E = 4.2 mm, mass ≈ 0.13 g.

Pin/Terminal	Circuit Role	Design Meaning
1 (Cathode)	Zener breakdown terminal	Connected to regulated voltage node; polarity must be observed to maintain reverse-bias operation.
2 (Anode)	Reference ground terminal	Tied to circuit common; forms return path for zener current and establishes reference potential.

Key Features

Feature	Design Value
Low-noise zener junction	Reduces broadband voltage noise by factor of 3–10 vs. legacy HZ series - critical for high-resolution measurement systems.
Low dynamic impedance	60 Ω typical at 0.5 mA - maintains regulation accuracy across varying load currents in unregulated supply rails.
Wide zener voltage range support	Part of HZ-L family spanning 5.2 V to 38 V - enables standardized sourcing across multiple reference voltage tiers.
High thermal stability	Temperature coefficient near zero crossing (~0.02 %/°C) at ~6.3 V - minimizes drift in temperature-varying enclosures.
Robust reliability	Rated for 175°C junction temperature and −55°C storage - suitable for extended-life industrial deployments.

Applications

Instrumentation Reference	Audio Signal Conditioning
Use Scenario: Precision voltage reference in 16-bit data acquisition systems with ±0.1% total error budget. IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 6.4 V bias for op-amp input stages and ADC reference buffers. Use Value: Low 60 Ω dynamic resistance and sub-1 μA leakage ensure <0.02% line regulation error and negligible loading on upstream regulators.	Use Scenario: DC offset nulling and bias stabilization in high-fidelity microphone preamplifiers. IC Role / Device Role / Timing Role: Low-noise zener reference establishing clean virtual ground and gain-setting node. Use Value: Noise reduction of 3×–10× versus standard zeners preserves signal-to-noise ratio in sub-10 μV input stages.
Industrial Sensor Interface	Programmable Logic Controller (PLC) Input Conditioning
Use Scenario: Bridge sensor excitation and ratiometric reference in strain-gauge-based pressure transmitters. IC Role / Device Role / Timing Role: Stable 6.4 V reference for Wheatstone bridge excitation and ADC reference voltage generation. Use Value: Tight 6.1–6.4 V tolerance and low tempco enable <±0.05% full-scale error over −40°C to +85°C operating range.	Use Scenario: Analog input protection and level-shifting in 4–20 mA loop-powered PLC modules. IC Role / Device Role / Timing Role: Overvoltage clamp and precision bias source for current-sense amplifier front-end. Use Value: 400 mW power rating and 175°C T_j allow reliable operation in sealed, convection-limited enclosures.

Instrumentation Reference

Audio Signal Conditioning

Use Scenario: Precision voltage reference in 16-bit data acquisition systems with ±0.1% total error budget.

IC Role / Device Role / Timing Role: Shunt voltage reference providing stable 6.4 V bias for op-amp input stages and ADC reference buffers.

Use Value: Low 60 Ω dynamic resistance and sub-1 μA leakage ensure <0.02% line regulation error and negligible loading on upstream regulators.

Use Scenario: DC offset nulling and bias stabilization in high-fidelity microphone preamplifiers.

IC Role / Device Role / Timing Role: Low-noise zener reference establishing clean virtual ground and gain-setting node.

Use Value: Noise reduction of 3×–10× versus standard zeners preserves signal-to-noise ratio in sub-10 μV input stages.

Industrial Sensor Interface

Programmable Logic Controller (PLC) Input Conditioning

Use Scenario: Bridge sensor excitation and ratiometric reference in strain-gauge-based pressure transmitters.

IC Role / Device Role / Timing Role: Stable 6.4 V reference for Wheatstone bridge excitation and ADC reference voltage generation.

Use Value: Tight 6.1–6.4 V tolerance and low tempco enable <±0.05% full-scale error over −40°C to +85°C operating range.

Use Scenario: Analog input protection and level-shifting in 4–20 mA loop-powered PLC modules.

IC Role / Device Role / Timing Role: Overvoltage clamp and precision bias source for current-sense amplifier front-end.

Use Value: 400 mW power rating and 175°C T_j allow reliable operation in sealed, convection-limited enclosures.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N4734A	Zener voltage 5.6 V (±5%), r_d = 9 Ω, P_d = 1 W, DO-41 package	Higher power, wider tolerance, higher noise than HZ4C3RE-E	Select when higher power handling is required and tighter voltage tolerance is not critical.
BZX55C6V2	Zener voltage 6.2 V (±5%), r_d = 100 Ω, P_d = 500 mW, DO-35 package	Same package but higher dynamic resistance and no low-noise specification	Choose for cost-sensitive designs where noise and regulation precision are secondary to availability.

Compared with 1N4734A and BZX55C6V2, the HZ4C3RE-E delivers superior voltage accuracy (±2.5% vs. ±5%), lower noise, and optimized dynamic impedance for precision analog reference use - though at lower power rating than 1N4734A and tighter V_Z binning than BZX55C6V2.

Availability

HZ4C3RE-E is available at Aetrix Electronics and suitable for stabilized power supplies, precision instrumentation references, and industrial sensor interfaces requiring stable component supply with traceable lot history and long-term obsolescence management.

Supply support for HZ4C3RE-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 manufacturer specializing in microcontrollers, analog mixed-signal devices, and power management ICs for industrial, automotive, and infrastructure applications.

The HZ-L Series, including HZ4C3RE-E, was developed specifically for low-noise, high-stability voltage reference applications in test equipment, medical instrumentation, and precision analog signal chains.

FAQ

What is the exact zener voltage range for HZ4C3RE-E?

The HZ4C3RE-E has a guaranteed zener voltage range of 6.1 V minimum to 6.4 V maximum when tested at I_Z = 0.5 mA and T_a = 25°C. This 300 mV span reflects tight binning within the HZ-L series' C-grade tolerance group, supporting high-accuracy reference design without post-production trimming.

Is HZ4C3RE-E compatible with standard DO-35 footprint layouts?

Yes, HZ4C3RE-E uses the JEITA-standard DO-35 package (GRZZ0002ZB-A) with axial leads, 2.0 mm body diameter, and 26.0 mm overall length. Its pinout - cathode (band-marked end) and anode - matches industry-standard DO-35 mechanical and soldering requirements, enabling direct replacement in existing through-hole designs.

Does HZ4C3RE-E meet RoHS and lead-free requirements?

HZ4C3RE-E complies with RoHS Directive 2011/65/EU and is manufactured as lead-free per Renesas' standard process. The device contains no intentionally added lead, cadmium, mercury, hexavalent chromium, PBB, or PBDE - confirmed in Renesas' material declarations and certified by third-party lab analysis.

How does the noise performance of HZ4C3RE-E compare to generic zener diodes?

HZ4C3RE-E achieves approximately 1/3 to 1/10 the broadband voltage noise of standard HZ-series zeners due to proprietary junction optimization. This is verified in Renesas' characterization data and makes it suitable for applications where noise below 10 μV_pp in 10 Hz–10 kHz bandwidth is required - such as high-gain sensor amplifiers.

Can HZ4C3RE-E be used in series or parallel configurations?

HZ4C3RE-E is designed for single-device shunt regulation. Series connection is not recommended due to mismatched temperature coefficients and voltage tolerances. Parallel use requires individual current-limiting resistors to prevent thermal runaway; Renesas specifies only single-device operation in its datasheet for HZ-L series.

HZ4C3RE-E 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:: -

HZ4C3RE-E FAQ

1.How can I place an order for HZ4C3RE-E through Aetrix?

Please submit a Request for Quotation (RFQ) for HZ4C3RE-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 HZ4C3RE-E reliable?

The price and inventory of HZ4C3RE-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ4C3RE-E is usually 5 days.

3.What payment methods are accepted for HZ4C3RE-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ4C3RE-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for HZ4C3RE-E?

HZ4C3RE-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your HZ4C3RE-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 HZ4C3RE-E?

For technical support, including HZ4C3RE-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ4C3RE-E requirements.

6.How does Aetrix verify that HZ4C3RE-E is sourced from the original manufacturer or authorized distributors?

All HZ4C3RE-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 HZ4C3RE-E meets industry standards.

7.What is the process for return or replacement of HZ4C3RE-E?

All HZ4C3RE-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ4C3RE-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 HZ4C3RE-E part is unused and in its original packaging.

Return procedure for HZ4C3RE-E:

1.Submit a request within 90 days.

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

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