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

Vishay General Semiconductor - Diodes Division TZQ5230B-GS08

Name: TZQ5230B-GS08
Brand: Vishay General Semiconductor - Diodes Division
SKU: TZQ5230B-GS08
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: TZQ5230B-GS08

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: Single Zener Diodes

Package:: SOD-80 Variant

Datasheet:: TZQ5230B-GS08.pdf

Description:: DIODE ZENER 4.7V 500MW SOD80

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Product details

Overview

TZQ5230B-GS08 from Vishay Semiconductors is a precision small-signal Zener diode with nominal zener voltage 4.7 V, ±5 % tolerance, 20 mA test current, <5 μA reverse leakage at 2 V, and <19 Ω dynamic impedance at IZT1 - designed for stable voltage reference and regulation in low-power analog circuits.

For engineers reviewing the TZQ5230B-GS08 datasheet, TZQ5230B-GS08 pinout, TZQ5230B-GS08 application, or TZQ5230B-GS08 equivalent, this page delivers verified electrical specs, QuadroMELF package details, thermal stability data, and real-world voltage stabilization use cases - all confirmed from Vishay's official Rev. 2.0 datasheet (Doc. #85612).

Technical Context

This device operates as a two-terminal voltage reference under reverse bias, maintaining regulation via controlled avalanche breakdown. Its temperature coefficient of ±0.030 %/K ensures minimal drift across -65 °C to +175 °C storage range and up to 175 °C junction temperature.

Designed for DC-stable operation at thermal equilibrium (case temp 30 °C ±2 °C), it delivers sharp reverse characteristics and low noise - critical for precision feedback loops in power supplies, sensor signal conditioning, and ADC reference circuits where low-leakage (<5 μA) and tight VZ tolerance are mandatory.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	4.7 V nominal, ±5 % tolerance - enables accurate 4.7 V reference generation with predictable deviation bounds in production.
Test Current (I_ZT1)	20 mA - defines the operating point where V_Z and dynamic resistance are specified; matches typical regulator feedback node current levels.
Reverse Leakage (I_R)	<5 μA at V_R = 2 V - ensures negligible error current in high-impedance reference networks and battery-powered sensing nodes.
Dynamic Resistance (Z_Z)	<19 Ω at I_ZT1 - provides low AC impedance for ripple rejection in post-regulation stages and stable loop gain in feedback circuits.
Power Dissipation (P_tot)	500 mW - supports continuous operation at 4.7 V / 106 mA max theoretical current, suitable for low-to-moderate power reference applications.
Temperature Coefficient (TKV_Z)	±0.030 %/K - minimizes voltage drift over temperature, enabling stable references in industrial environments without active compensation.
Junction Temperature (T_j)	175 °C maximum - allows reliable operation in thermally demanding PCB layouts and enclosed enclosures with limited airflow.

Pinout & Package

QuadroMELF (SOD-80) glass-body surface-mount package: cylindrical, axial-leaded, cathode identified by band; dimensions 3.7 mm length × 1.6 mm diameter; weight ≈34 mg; UL 94 V-0 molding compound; MSL Level 1 (unlimited floor life).

Pin/Terminal	Circuit Role	Design Meaning
Anode	Forward conduction terminal / low-side connection in reverse-bias regulation	Connected to circuit ground or lower potential node when used as shunt regulator; carries full load current during regulation.
Cathode	Zener breakdown terminal / reference output node	Provides stabilized 4.7 V output relative to anode; marked with band; must be held at higher potential than anode for regulation.

Key Features

Feature	Design Value
Very sharp reverse characteristic	Enables precise turn-on at 4.7 V with minimal knee spread - critical for accurate threshold detection and clean reference switching.
Low reverse leakage current	<5 μA at 2 V reverse bias reduces loading error in high-Z divider networks and extends battery life in portable instrumentation.
High stability & low noise	Supports metrology-grade voltage references and low-noise amplifier biasing where long-term drift and broadband noise degrade SNR.
±5 % V_Z tolerance	Allows direct use in cost-sensitive designs without trimming; tighter binning available for higher-accuracy variants in same family.
MSL Level 1 handling	Eliminates bake requirements before reflow - simplifies SMT assembly and reduces process risk for high-reliability manufacturing.

Applications

Industrial Sensor Signal Conditioning	Low-Power Microcontroller Voltage Reference
Use Scenario: Stabilizing excitation voltage for resistive bridge sensors (e.g., strain gauges, RTDs) in PLC analog input modules. IC Role / Device Role / Timing Role: Shunt voltage reference providing fixed 4.7 V bias to sensor bridges, rejecting supply ripple and thermal drift. Use Value: Enables sub-0.1 % measurement accuracy over -40 °C to +85 °C ambient, leveraging ±0.030 %/K TKV_Z and <5 μA leakage.	Use Scenario: Supplying precise reference to internal ADC or external voltage supervisor in battery-powered IoT edge nodes. IC Role / Device Role / Timing Role: Low-current Zener reference replacing higher-power IC references to extend coin-cell lifetime. Use Value: Delivers stable 4.7 V at 20 μA–100 μA load currents with <19 Ω dynamic impedance, minimizing ADC code spread.
DC-DC Converter Feedback Network	Overvoltage Protection Clamp
Use Scenario: Setting regulated output voltage in isolated flyback or buck converters using optocoupler feedback. IC Role / Device Role / Timing Role: Precision voltage reference in secondary-side TL431-like feedback path, defining output setpoint. Use Value: Tight ±5 % V_Z and low Z_Z ensure output regulation within ±1.5 % across line/load/temperature - meeting Class II safety standards.	Use Scenario: Clamping transient surges on 5 V logic rails (e.g., USB interface lines, MCU I/O pins) in automotive body control modules. IC Role / Device Role / Timing Role: Fast-acting shunt clamp absorbing ESD and load-dump energy above 4.7 V threshold. Use Value: Sharp reverse knee and 500 mW P_tot allow robust clamping without latch-up, protecting downstream CMOS inputs rated for 5.5 V max.

Industrial Sensor Signal Conditioning

Low-Power Microcontroller Voltage Reference

Use Scenario: Stabilizing excitation voltage for resistive bridge sensors (e.g., strain gauges, RTDs) in PLC analog input modules.

IC Role / Device Role / Timing Role: Shunt voltage reference providing fixed 4.7 V bias to sensor bridges, rejecting supply ripple and thermal drift.

Use Value: Enables sub-0.1 % measurement accuracy over -40 °C to +85 °C ambient, leveraging ±0.030 %/K TKV_Z and <5 μA leakage.

Use Scenario: Supplying precise reference to internal ADC or external voltage supervisor in battery-powered IoT edge nodes.

IC Role / Device Role / Timing Role: Low-current Zener reference replacing higher-power IC references to extend coin-cell lifetime.

Use Value: Delivers stable 4.7 V at 20 μA–100 μA load currents with <19 Ω dynamic impedance, minimizing ADC code spread.

DC-DC Converter Feedback Network

Overvoltage Protection Clamp

Use Scenario: Setting regulated output voltage in isolated flyback or buck converters using optocoupler feedback.

IC Role / Device Role / Timing Role: Precision voltage reference in secondary-side TL431-like feedback path, defining output setpoint.

Use Value: Tight ±5 % V_Z and low Z_Z ensure output regulation within ±1.5 % across line/load/temperature - meeting Class II safety standards.

Use Scenario: Clamping transient surges on 5 V logic rails (e.g., USB interface lines, MCU I/O pins) in automotive body control modules.

IC Role / Device Role / Timing Role: Fast-acting shunt clamp absorbing ESD and load-dump energy above 4.7 V threshold.

Use Value: Sharp reverse knee and 500 mW P_tot allow robust clamping without latch-up, protecting downstream CMOS inputs rated for 5.5 V max.

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
BZX55C4V7 (ON Semiconductor)	Same 4.7 V ±5 %, but SOD-34 (DO-35) through-hole package; higher R_thJA (600 K/W); no MSL rating.	Requires wave soldering or hand assembly; unsuitable for fully SMT lines or high-density boards.	Select when legacy through-hole compatibility or higher surge capability (1.5 W peak) is prioritized over board space and reflow simplicity.
MMSZ4700T1G (ON Semiconductor)	SOD-123 surface-mount package; same 4.7 V ±5 %, but higher leakage (≤10 μA at 2 V) and higher Z_Z (≤30 Ω).	Acceptable for general-purpose regulation but less suitable for precision sensor biasing or low-noise ADC references.	Choose for cost-sensitive consumer designs where tighter leakage and impedance specs are non-critical.

Compared with BZX55C4V7 and MMSZ4700T1G, TZQ5230B-GS08 offers superior thermal performance (R_thJA = 500 K/W), lower leakage, lower dynamic impedance, and MSL Level 1 compliance - making it optimal for high-density, high-reliability SMT applications demanding precision and manufacturability.

Availability

TZQ5230B-GS08 is available at Aetrix Electronics and suitable for industrial sensor interfaces, low-power microcontroller reference circuits, and DC-DC converter feedback networks requiring stable component supply, consistent parametric performance, and full traceability.

Supply support for TZQ5230B-GS08 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

Vishay Intertechnology is a global semiconductor manufacturer specializing in discrete components, passive elements, and sensors - with leadership in reliability, precision, and high-volume automotive/industrial qualification.

TZQ5230B-GS08 belongs to Vishay's TZQ52xxB series of small-signal Zener diodes, engineered for high-stability voltage reference and regulation in space-constrained, thermally demanding applications.

FAQ

What is the exact zener voltage tolerance and test condition for TZQ5230B-GS08?

The TZQ5230B-GS08 has a nominal zener voltage of 4.7 V with a tolerance of ±5 %, measured at thermal equilibrium with case temperature maintained at 30 °C ±2 °C and test current I_ZT1 = 20 mA. This specification is explicitly defined in Table "ELECTRICAL CHARACTERISTICS" on page 2 of Vishay's Doc. #85612 Rev. 2.0.

Does TZQ5230B-GS08 support reflow soldering, and what is its moisture sensitivity level?

Yes, TZQ5230B-GS08 is qualified for standard lead-free reflow soldering per J-STD-020, with a maximum peak temperature of 260 °C for 10 seconds at terminals. It carries Moisture Sensitivity Level (MSL) 1, meaning it has unlimited floor life and requires no baking prior to assembly - confirmed in the "PACKAGE" section of the Vishay datasheet.

What is the maximum reverse leakage current for TZQ5230B-GS08, and at what voltage is it specified?

The maximum reverse leakage current for TZQ5230B-GS08 is <5 μA, specified at reverse voltage V_R = 2 V and ambient temperature 25 °C. This value appears in the "ELECTRICAL CHARACTERISTICS" table under "REVERSE LEAKAGE CURRENT" for part number TZQ5230B in Vishay's Doc. #85612.

Can TZQ5230B-GS08 be used in place of a 5 V logic-level shunt reference?

TZQ5230B-GS08 provides 4.7 V nominal regulation - not 5.0 V - so it is not a direct replacement for 5 V references unless system tolerance permits a 300 mV offset. Its ±5 % tolerance yields a 4.47–4.94 V range, which may suit 5 V rail monitoring or clamping but not strict 5.0 V reference applications without calibration.

What package type and dimensions does TZQ5230B-GS08 use, and how is polarity marked?

TZQ5230B-GS08 uses the QuadroMELF (SOD-80) package: cylindrical glass body, 3.7 mm length × 1.6 mm diameter, with cathode identified by a single dark band near one end. Full mechanical drawings, including footprint recommendations, are provided in Figure "PACKAGE DIMENSIONS" on page 4 of Vishay's Doc. #85612.

TZQ5230B-GS08 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Series:: -

Package/Case:: SOD-80 Variant

Packaging:: Tape & Reel (TR)

Product Status:: Active

Voltage - Zener (Nom) (Vz):: 4.7 V

Tolerance:: ±5%

Power - Max:: 500 mW

Impedance (Max) (Zzt):: 19 Ohms

Current - Reverse Leakage @ Vr:: 5 µA @ 2 V

Voltage - Forward (Vf) (Max) @ If:: 1.5 V @ 200 mA

Operating Temperature:: -65°C ~ 175°C

Grade:: Automotive

Qualification:: AEC-Q101

Mounting Type:: Surface Mount

Supplier Device Package:: SOD-80 QuadroMELF

TZQ5230B-GS08 FAQ

1.How can I place an order for TZQ5230B-GS08 through Aetrix?

Please submit a Request for Quotation (RFQ) for TZQ5230B-GS08 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 TZQ5230B-GS08 reliable?

The price and inventory of TZQ5230B-GS08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TZQ5230B-GS08 is usually 5 days.

3.What payment methods are accepted for TZQ5230B-GS08?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TZQ5230B-GS08 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for TZQ5230B-GS08?

TZQ5230B-GS08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your TZQ5230B-GS08 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 TZQ5230B-GS08?

For technical support, including TZQ5230B-GS08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TZQ5230B-GS08 requirements.

6.How does Aetrix verify that TZQ5230B-GS08 is sourced from the original manufacturer or authorized distributors?

All TZQ5230B-GS08 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 TZQ5230B-GS08 meets industry standards.

7.What is the process for return or replacement of TZQ5230B-GS08?

All TZQ5230B-GS08 units undergo pre-shipment inspection (PSI). If there is an issue with TZQ5230B-GS08, 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 TZQ5230B-GS08 part is unused and in its original packaging.

Return procedure for TZQ5230B-GS08:

1.Submit a request within 90 days.

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

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