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

Renesas HZS7B2L-E

Name: HZS7B2L-E
Brand: Renesas
SKU: HZS7B2L-E
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: HZS7B2L-E

Manufacturer:: Renesas

Category:: Single Zener Diodes

Package:: -

Datasheet:: HZS7B2L-E.pdf

Description:: DIODE ZENER

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Inventory:6,500

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Product details

Overview

HZS7B2L-E from Renesas is a silicon planar Zener diode optimized for low-noise voltage reference and stabilization in precision analog circuits, with a nominal zener voltage of 6.9–7.2 V, 400 mW power dissipation, 60 Ω dynamic resistance at 3.5 mA, and junction temperature rating up to 200°C. It serves as a stable shunt reference in low-drift power supplies and sensor biasing networks.

For engineers reviewing the HZS7B2L-E datasheet, HZS7B2L-E pinout, HZS7B2L-E application, or HZS7B2L-E equivalent, key selection criteria include its low-noise performance (1/3–1/10 that of HZ series), tight V_Z tolerance, low leakage, and suitability for high-speed automatic insertion on 5 mm-pitch PCBs.

Technical Context

This device operates as a DC-stabilized shunt regulator using avalanche breakdown in a planar silicon junction. Its low dynamic impedance (60 Ω at I_Z = 3.5 mA) ensures minimal output voltage variation under load transients, while its −55°C to +175°C storage range supports industrial and automotive-adjacent environments.

The HZS7B2L-E exhibits a zener voltage temperature coefficient near zero (±0.02%/°C typical per Fig.2), enabling stable reference performance across ambient shifts. Its 400 mW power rating and 200°C maximum junction temperature allow reliable operation in thermally constrained layouts without forced cooling.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	6.9–7.2 V at I_Z = 3.5 mA - defines precise regulation point for low-drift references
Dynamic Resistance (r_d)	60 Ω max at I_Z = 3.5 mA - ensures <1% output shift per 1 mA load change
Power Dissipation (P_d)	400 mW at T_a = 25°C - supports continuous operation in compact SMT-compatible footprints
Reverse Leakage (I_R)	1 μA max at V_R = 2.0 V - minimizes parasitic current draw in high-impedance bias networks
Junction Temperature (T_j)	200°C max - enables use in sealed enclosures or near heat-generating components
Package	MHD (GRZZ0002ZC-A) - axial-leaded, 2.0 mm diameter, 26 mm length, 5 mm pitch compatible

Pinout & Package

MHD package: axial-leaded, cylindrical glass body with cathode band marking; lead spacing 5 mm; mass 0.084 g; RoHS-compliant.

Pin/Terminal	Circuit Role	Design Meaning
1 (Cathode)	Zener anode connection point	Connected to regulated output node; polarity-sensitive for correct breakdown conduction
2 (Anode)	Zener cathode connection point	Connected to ground or lower-potential rail; reverse-biased during regulation

Key Features

Feature	Design Value
Low-noise Zener operation	1/3–1/10 noise level vs. legacy HZ series - critical for audio preamps and precision ADC references
Tight V_Z tolerance	±0.15 V over 6.9–7.2 V range - reduces calibration overhead in production test
Low zener impedance	60 Ω max at 3.5 mA - maintains regulation stability under dynamic load steps
High-temperature capability	200°C max junction temperature - supports deployment in engine-control or industrial motor-drive modules

Applications

Industrial Power Monitoring	Automotive Sensor Biasing
Use Scenario: Monitoring battery voltage in 12 V vehicle subsystems with ±0.5% accuracy over −40°C to +125°C. IC Role / Device Role / Timing Role: Shunt voltage reference for ADC input scaling and comparator threshold setting. Use Value: Low temperature coefficient (±0.02%/°C) and 60 Ω r_d ensure consistent full-scale mapping across thermal cycles.	Use Scenario: Providing stable 7.0 V bias to piezoresistive pressure sensors in exhaust gas recirculation (EGR) valves. IC Role / Device Role / Timing Role: Precision DC reference source for Wheatstone bridge excitation. Use Value: 1 μA max leakage prevents loading error in high-impedance sensor bridges; 400 mW rating accommodates transient surges.
Medical Instrumentation	Test & Measurement Equipment
Use Scenario: Calibrating portable ECG front-end gain stages requiring sub-10 ppm/°C drift. IC Role / Device Role / Timing Role: Low-noise voltage reference for programmable gain amplifier (PGA) offset trimming. Use Value: Noise reduction (vs. HZ series) directly improves signal-to-noise ratio in microvolt-level biopotential acquisition.	Use Scenario: Stabilizing reference rails in handheld multimeters operating from single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Shunt regulator maintaining 7.0 V rail for dual-slope ADC integrator timing. Use Value: Tight V_Z tolerance (±0.15 V) eliminates need for post-assembly trimming; MHD package enables automated insertion.

Industrial Power Monitoring

Automotive Sensor Biasing

Use Scenario: Monitoring battery voltage in 12 V vehicle subsystems with ±0.5% accuracy over −40°C to +125°C.

IC Role / Device Role / Timing Role: Shunt voltage reference for ADC input scaling and comparator threshold setting.

Use Value: Low temperature coefficient (±0.02%/°C) and 60 Ω r_d ensure consistent full-scale mapping across thermal cycles.

Use Scenario: Providing stable 7.0 V bias to piezoresistive pressure sensors in exhaust gas recirculation (EGR) valves.

IC Role / Device Role / Timing Role: Precision DC reference source for Wheatstone bridge excitation.

Use Value: 1 μA max leakage prevents loading error in high-impedance sensor bridges; 400 mW rating accommodates transient surges.

Medical Instrumentation

Test & Measurement Equipment

Use Scenario: Calibrating portable ECG front-end gain stages requiring sub-10 ppm/°C drift.

IC Role / Device Role / Timing Role: Low-noise voltage reference for programmable gain amplifier (PGA) offset trimming.

Use Value: Noise reduction (vs. HZ series) directly improves signal-to-noise ratio in microvolt-level biopotential acquisition.

Use Scenario: Stabilizing reference rails in handheld multimeters operating from single-cell Li-ion batteries.

IC Role / Device Role / Timing Role: Shunt regulator maintaining 7.0 V rail for dual-slope ADC integrator timing.

Use Value: Tight V_Z tolerance (±0.15 V) eliminates need for post-assembly trimming; MHD package enables automated insertion.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
1N4734A	V_Z = 5.6 V, r_d = 9 Ω, P_d = 1 W, DO-41 package	Higher power but wider V_Z tolerance (±5%), higher noise	Select when higher power handling is required and tighter V_Z tolerance is not critical
BZX55C6V8	V_Z = 6.8 V, r_d = 35 Ω, P_d = 500 mW, DO-35 package	Lower dynamic impedance but no documented low-noise optimization	Select when lowest possible r_d is prioritized over noise floor in non-audio applications

Compared with 1N4734A and BZX55C6V8, the HZS7B2L-E delivers superior noise performance and tighter V_Z control at 7.0 V nominal, making it preferred for precision analog systems where reference stability and spectral purity are design-critical.

Availability

HZS7B2L-E is available at Aetrix Electronics and suitable for industrial power monitoring, automotive sensor biasing, medical instrumentation, and test & measurement equipment requiring stable component supply and long-term sourcing continuity.

Supply support for HZS7B2L-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 delivering microcontrollers, analog power, and SoC solutions for automotive, industrial, and infrastructure markets.

The HZS-L Series is part of Renesas' precision analog portfolio, designed specifically for low-noise, high-stability voltage reference applications where traditional Zener diodes introduce unacceptable signal degradation.

FAQ

What is the nominal zener voltage of the HZS7B2L-E?

The HZS7B2L-E has a nominal zener voltage of 7.0 V, with a guaranteed range of 6.9 V to 7.2 V at a test current of 3.5 mA. This tight tolerance supports precision regulation without external trimming. The value is specified under DC conditions per Renesas datasheet REJ03G0166-0300, and the HZS7B2L-E maintains this specification across its rated junction temperature range.

Does the HZS7B2L-E support high-speed automatic insertion?

Yes, the HZS7B2L-E is explicitly qualified for 5 mm-pitch high-speed automatic insertion, as stated in the "Ordering Information" section of its datasheet. Its MHD package (GRZZ0002ZC-A) features standardized lead spacing and mechanical dimensions compatible with industry-standard pick-and-place feeders. This makes the HZS7B2L-E suitable for high-volume manufacturing without manual handling or rework.

What is the maximum power dissipation rating for the HZS7B2L-E?

The HZS7B2L-E has a maximum power dissipation (P_d) of 400 mW at ambient temperature (T_a) = 25°C. Derating is required above this temperature, as shown in Figure 3 of the datasheet, with power capability decreasing linearly to zero at approximately 150°C ambient. This rating applies to the standard MHD package mounted on a 100 × 180 × 1.6 mm phenolic PCB.

How does the noise performance of the HZS7B2L-E compare to older Zener series?

The HZS7B2L-E achieves approximately 1/3 to 1/10 the noise level of the legacy HZ series, as confirmed in the "Features" section of the Renesas datasheet. This improvement stems from optimized planar junction fabrication and low-leakage processing. For applications like audio preamplifiers or precision data acquisition, the HZS7B2L-E's reduced noise floor directly enhances system SNR without requiring additional filtering or post-regulation stages.

Is the HZS7B2L-E suitable for automotive under-hood applications?

The HZS7B2L-E supports storage temperatures from −55°C to +175°C and junction temperatures up to 200°C, exceeding typical under-hood requirements. While Renesas does not classify it as AEC-Q200-qualified, its thermal robustness and low-drift characteristics make it suitable for non-safety-critical automotive subsystems-such as cabin climate control sensors or infotainment power rails-provided system-level validation confirms reliability under vibration and thermal cycling.

HZS7B2L-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:: -

HZS7B2L-E FAQ

1.How can I place an order for HZS7B2L-E through Aetrix?

Please submit a Request for Quotation (RFQ) for HZS7B2L-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 HZS7B2L-E reliable?

The price and inventory of HZS7B2L-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for HZS7B2L-E is usually 5 days.

3.What payment methods are accepted for HZS7B2L-E?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for HZS7B2L-E transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for HZS7B2L-E?

HZS7B2L-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your HZS7B2L-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 HZS7B2L-E?

For technical support, including HZS7B2L-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your HZS7B2L-E requirements.

6.How does Aetrix verify that HZS7B2L-E is sourced from the original manufacturer or authorized distributors?

All HZS7B2L-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 HZS7B2L-E meets industry standards.

7.What is the process for return or replacement of HZS7B2L-E?

All HZS7B2L-E units undergo pre-shipment inspection (PSI). If there is an issue with HZS7B2L-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 HZS7B2L-E part is unused and in its original packaging.

Return procedure for HZS7B2L-E:

1.Submit a request within 90 days.

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

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