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

Renesas HZ11C3RE-E

Name: HZ11C3RE-E
Brand: Renesas
SKU: HZ11C3RE-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: HZ11C3RE-E

Manufacturer:: Renesas

Category:: Single Zener Diodes

Package:: DO-204AH, DO-35, Axial

Datasheet:: HZ11C3RE-E.pdf

Description:: DIODE ZENER 11V 500MW DO35

Quantity:: RFQ Add To RFQ list

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Inventory:24,000

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Product details

Overview

HZ11C3RE-E from Renesas Electronics is a silicon planar Zener diode optimized for low-noise voltage reference and stabilization in precision analog circuits, with a nominal zener voltage of 11.4–11.9 V, dynamic resistance of 80 Ω at 0.5 mA, maximum power dissipation of 400 mW, and junction temperature rating up to 175°C - deployed in regulated power supplies and sensor biasing networks.

For engineers reviewing the HZ11C3RE-E datasheet, HZ11C3RE-E pinout, HZ11C3RE-E application, or HZ11C3RE-E equivalent, key selection criteria include zener voltage tolerance (±0.5 V), low noise performance relative to legacy HZ series, DO-35 package thermal limits, and temperature coefficient behavior across operating ambient ranges.

Technical Context

This device operates as a two-terminal voltage reference using avalanche breakdown in a silicon planar junction structure. It delivers stable regulation under DC test conditions (IZ = 0.5 mA), exhibits a zener voltage temperature coefficient of approximately −0.04 %/°C near 11.6 V (per Fig.2), and maintains low leakage current (IR ≤ 1 μA at VR = 8.0 V).

The HZ11C3RE-E belongs to the HZ-L Series, engineered specifically to reduce diode noise by 70–90% versus standard HZ-series parts. Its DO-35 glass package supports axial lead mounting on PCBs with 2.5 mm minimum creepage, and thermal derating follows a linear 3.33 mW/°C reduction above 25°C ambient (per Fig.3).

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	11.4–11.9 V at I_Z = 0.5 mA - defines stable regulation range for feedback loops requiring tight DC reference accuracy.
Dynamic Resistance (r_d)	80 Ω max at I_Z = 0.5 mA - determines output impedance and load regulation sensitivity in shunt regulator topologies.
Power Dissipation (P_d)	400 mW max at T_a = 25°C - sets absolute thermal limit before derating; requires heatsinking or airflow above 70°C ambient.
Reverse Current (I_R)	≤1 μA at V_R = 8.0 V - ensures minimal quiescent current draw in battery-powered or high-impedance bias networks.
Junction Temperature (T_j)	−55 to +175°C - enables operation in industrial environments including motor control enclosures and automotive under-hood modules.
Package	DO-35 (GRZZ0002ZB-A) - axial-leaded glass body with navy-blue cathode band; compatible with wave soldering and manual rework.

Pinout & Package

DO-35 glass package with axial leads: cathode identified by navy-blue band; anode and cathode terminals support through-hole PCB mounting. Body color is orange. Mass: 0.13 g (typ.). Dimensions per JEITA SC-40: φD = 2.0 mm, E = 4.2 mm, L = 26.0 mm.

Pin/Terminal	Circuit Role	Design Meaning
1 (Banded End)	Cathode	Connected to regulated output node in shunt configuration; reverse-biased during normal operation.
2 (Non-banded End)	Anode	Connected to circuit ground or common return path; establishes reference potential for voltage clamping.

Key Features

Feature	Design Value
Low-noise Zener operation	Diode noise reduced to ~1/3–1/10 of standard HZ-series - critical for audio preamps and precision ADC references.
Stable low-impedance regulation	80 Ω dynamic resistance at 0.5 mA - minimizes output voltage shift under varying load currents.
Wide zener voltage range	11.4–11.9 V tolerance window - accommodates design margin without trimming resistors in fixed-voltage rails.
High-temperature reliability	175°C max junction temperature - supports use in sealed enclosures with limited airflow or near heat-generating components.

Applications

Industrial Power Monitoring	Medical Sensor Biasing
Use Scenario: Monitoring DC bus voltage in PLC I/O modules with ±0.5% accuracy over −40 to +85°C ambient. IC Role / Device Role / Timing Role: Shunt voltage reference for ADC input scaling and overvoltage protection threshold detection. Use Value: Low dynamic resistance (80 Ω) ensures <10 mV error contribution from load current variation up to 1 mA.	Use Scenario: Providing stable excitation voltage to bridge-based pressure transducers in portable diagnostic devices. IC Role / Device Role / Timing Role: Low-noise DC bias source replacing op-amp-based references to reduce component count and board space. Use Value: 70–90% lower noise vs. HZ-series enables sub-16-bit ENOB preservation in 24-bit sigma-delta ADC front-ends.
Automotive Cabin Control	Test Equipment Calibration
Use Scenario: Regulating supply to microcontroller reset circuitry in HVAC control units exposed to engine bay thermal cycling. IC Role / Device Role / Timing Role: Zener clamp for brown-out detection with guaranteed operation up to 125°C case temperature. Use Value: 175°C junction rating allows 50°C safety margin beyond AEC-Q200 Grade 2 ambient limits (−40 to +105°C).	Use Scenario: Serving as traceable voltage standard in handheld multimeter reference stages during factory calibration. IC Role / Device Role / Timing Role: Primary DC reference element in 4½-digit DMM internal shunt regulator. Use Value: Tight 0.5 V zener tolerance (11.4–11.9 V) reduces calibration drift correction frequency by >3× versus ±1 V HZ-series parts.

Industrial Power Monitoring

Medical Sensor Biasing

Use Scenario: Monitoring DC bus voltage in PLC I/O modules with ±0.5% accuracy over −40 to +85°C ambient.

IC Role / Device Role / Timing Role: Shunt voltage reference for ADC input scaling and overvoltage protection threshold detection.

Use Value: Low dynamic resistance (80 Ω) ensures <10 mV error contribution from load current variation up to 1 mA.

Use Scenario: Providing stable excitation voltage to bridge-based pressure transducers in portable diagnostic devices.

IC Role / Device Role / Timing Role: Low-noise DC bias source replacing op-amp-based references to reduce component count and board space.

Use Value: 70–90% lower noise vs. HZ-series enables sub-16-bit ENOB preservation in 24-bit sigma-delta ADC front-ends.

Automotive Cabin Control

Test Equipment Calibration

Use Scenario: Regulating supply to microcontroller reset circuitry in HVAC control units exposed to engine bay thermal cycling.

IC Role / Device Role / Timing Role: Zener clamp for brown-out detection with guaranteed operation up to 125°C case temperature.

Use Value: 175°C junction rating allows 50°C safety margin beyond AEC-Q200 Grade 2 ambient limits (−40 to +105°C).

Use Scenario: Serving as traceable voltage standard in handheld multimeter reference stages during factory calibration.

IC Role / Device Role / Timing Role: Primary DC reference element in 4½-digit DMM internal shunt regulator.

Use Value: Tight 0.5 V zener tolerance (11.4–11.9 V) reduces calibration drift correction frequency by >3× versus ±1 V HZ-series parts.

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
1N4742A	Zener voltage 12 V ±5%, r_d = 9 Ω @ 21 mA, P_d = 1 W, DO-41 package	Higher power, higher test current, tighter V_Z tolerance but significantly higher noise than HZ-L series	Select when higher power handling is required and noise is secondary to regulation accuracy.
BZX85C12	Zener voltage 12 V ±5%, r_d = 25 Ω @ 5 mA, P_d = 1.3 W, DO-41 package	Lower dynamic resistance at higher test current, but no documented low-noise optimization or HZ-L series noise reduction claim	Prefer for general-purpose stabilization where cost and availability outweigh ultra-low-noise requirements.

Compared with 1N4742A and BZX85C12, the HZ11C3RE-E trades higher power rating and tighter nominal V_Z for industry-leading low-noise performance and proven 70–90% noise reduction - making it uniquely suited for precision analog signal chains rather than generic voltage clamping.

Availability

HZ11C3RE-E is available at Aetrix Electronics and suitable for industrial power monitoring, medical sensor biasing, automotive cabin control, and test equipment calibration requiring stable component supply with full traceability and long-term lifecycle support.

Supply support for HZ11C3RE-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 Corporation is a Japanese semiconductor manufacturer specializing in microcontrollers, analog and power devices, and system-on-chip solutions for industrial, automotive, and infrastructure markets.

The HZ-L Series was designed to address demand for ultra-low-noise Zener references in high-resolution data acquisition systems - extending Renesas' legacy in precision analog components beyond its MCU portfolio.

FAQ

What is the zener voltage tolerance of HZ11C3RE-E?

The HZ11C3RE-E has a specified zener voltage range of 11.4 V to 11.9 V at I_Z = 0.5 mA, representing a ±0.5 V absolute tolerance. This tolerance is verified under DC test conditions per Renesas REJ03G0182-0300 Rev.3.00, and applies directly to the HZ11C3RE-E variant within the HZ-L Series family.

Does HZ11C3RE-E support high-temperature operation?

Yes, the HZ11C3RE-E is rated for junction temperatures from −55°C to +175°C and storage temperatures from −55°C to +175°C. Its DO-35 package enables reliable operation in industrial environments up to 125°C ambient when derated per the linear curve in Figure 3 of the datasheet, confirming suitability for under-hood automotive and motor drive applications.

How does the noise performance of HZ11C3RE-E compare to standard Zener diodes?

The HZ11C3RE-E achieves approximately 1/3 to 1/10 the noise level of legacy HZ-series Zeners, as stated in the "Features" section of the Renesas HZ-L Series datasheet. This low-noise characteristic is intrinsic to the silicon planar process and structure of the HZ-L Series, and is confirmed for the HZ11C3RE-E part number via family-level specification.

What is the dynamic resistance of HZ11C3RE-E and why does it matter?

The HZ11C3RE-E has a maximum dynamic resistance of 80 Ω at I_Z = 0.5 mA. This value determines how much the output voltage changes with load current variation in shunt regulator configurations - lower r_d improves regulation stability, especially in low-current precision biasing applications like sensor excitation.

Is HZ11C3RE-E RoHS compliant?

Yes, the HZ11C3RE-E complies with the EU RoHS Directive, as confirmed by Renesas Electronics' environmental compliance documentation and product marking. Renesas requires adherence to all applicable laws regulating controlled substances, and the HZ11C3RE-E is manufactured and tested to meet RoHS material restrictions without exemptions.

HZ11C3RE-E Specifications

Product attributes: Attribute value

Manufacturer:: Renesas

Series:: HZ

Package/Case:: DO-204AH, DO-35, Axial

Packaging:: Bulk

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 11 V

Tolerance:: ±2.27%

Power - Max:: 500 mW

Impedance (Max) (Zzt):: 25 Ohms

Current - Reverse Leakage @ Vr:: 1 µA @ 7.5 V

Voltage - Forward (Vf) (Max) @ If:: -

Operating Temperature:: 175°C (TJ)

Grade:: -

Qualification:: -

Mounting Type:: Through Hole

Supplier Device Package:: DO-35

HZ11C3RE-E FAQ

1.How can I place an order for HZ11C3RE-E through Aetrix?

Please submit a Request for Quotation (RFQ) for HZ11C3RE-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 HZ11C3RE-E reliable?

The price and inventory of HZ11C3RE-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZ11C3RE-E is usually 5 days.

3.What payment methods are accepted for HZ11C3RE-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZ11C3RE-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for HZ11C3RE-E?

HZ11C3RE-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your HZ11C3RE-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 HZ11C3RE-E?

For technical support, including HZ11C3RE-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZ11C3RE-E requirements.

6.How does Aetrix verify that HZ11C3RE-E is sourced from the original manufacturer or authorized distributors?

All HZ11C3RE-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 HZ11C3RE-E meets industry standards.

7.What is the process for return or replacement of HZ11C3RE-E?

All HZ11C3RE-E units undergo pre-shipment inspection (PSI). If there is an issue with HZ11C3RE-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 HZ11C3RE-E part is unused and in its original packaging.

Return procedure for HZ11C3RE-E:

1.Submit a request within 90 days.

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

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