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

Vishay General Semiconductor - Diodes Division VLZ22-GS08

Name: VLZ22-GS08
Brand: Vishay General Semiconductor - Diodes Division
SKU: VLZ22-GS08
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: VLZ22-GS08

Manufacturer:: Vishay General Semiconductor - Diodes Division

Category:: Single Zener Diodes

Package:: SOD-80 Variant

Datasheet:: VLZ22-GS08.pdf

Description:: DIODE ZENER 22V 500MW SOD80

Quantity:: RFQ Add To RFQ list

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Inventory:3,885

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Product details

Overview

VLZ22-GS08 from Vishay Semiconductor is a surface-mount Zener diode optimized for voltage regulation and transient suppression in low-power signal conditioning circuits, featuring a nominal Zener voltage of 22 V, ±5% tolerance, 500 mW power dissipation, 1 µA maximum reverse leakage at 17.6 V, and DO-213AB (MELF) glass package. It is used in precision reference and overvoltage clamp applications within industrial sensor interfaces.

For engineers reviewing the VLZ22-GS08 datasheet, VLZ22-GS08 pinout, VLZ22-GS08 application, or VLZ22-GS08 equivalent, key selection criteria include Zener voltage accuracy, dynamic impedance at test current, thermal stability across -65 °C to +175 °C, and MELF package reliability under thermal cycling stress.

Technical Context

This device operates as a two-terminal voltage reference with sharp reverse breakdown characteristics, specified at I_ZT = 5 mA. Its low dynamic impedance (≤ 55 Ω) and tight voltage tolerance support stable regulation in feedback loops and analog front-end protection.

The DO-213AB glass-metal hermetic package ensures high moisture resistance (MSL 1), low leakage, and long-term parameter stability - critical for automotive and industrial environments where bias networks must remain invariant over temperature and time.

Key Specifications

Parameter	Value and Actual Design Meaning
Zener Voltage (V_Z)	22 V ±5% at I_ZT = 5 mA - defines precise clamping threshold for 24 V rail protection and reference generation.
Power Dissipation (P_tot)	500 mW at T_amb = 50 °C - enables continuous operation without heatsinking in compact PCB layouts.
Reverse Leakage (I_R)	≤1 µA at V_R = 17.6 V - ensures minimal loading on high-impedance sensor bias networks.
Dynamic Impedance (Z_ZT)	≤55 Ω at I_ZT = 5 mA - maintains regulation accuracy under varying load currents in feedback paths.
Operating Temperature	-65 °C to +175 °C - supports deployment in under-hood automotive and industrial control modules.
Package	DO-213AB (MELF) - provides superior thermal performance and reliability vs. SOD-123, with no solder joint fatigue risk.

Pinout & Package

VLZ22-GS08 is a two-terminal axial device in DO-213AB (MELF) glass package. Terminals are non-polarized; cathode identified by single black band. No PCB footprint polarity marking required - symmetric geometry allows orientation-agnostic placement.

Pin/Terminal	Circuit Role	Design Meaning
Anode	Reference ground node	Connected to circuit common; establishes return path for Zener current during regulation.
Cathode	Regulated output node	Provides stable 22 V reference or clamps input transients above 22 V to protect downstream ICs.

Key Features

Feature	Design Value
Very sharp reverse breakdown	Enables clean voltage clamping with minimal overshoot in ESD/EMI protection circuits.
Low reverse leakage current	Maintains high input impedance in precision voltage divider networks without signal attenuation.
High stability over temperature	TC of V_Z ≈ 0.07 %/°C - reduces drift-induced error in 22 V references across full operating range.
AEC-Q200 qualified	Validated for automotive electronics per stress test requirements including temperature cycling and humidity exposure.
UL94 V-0 rated epoxy	Meets flammability safety standards for enclosed industrial enclosures and power supply modules.

Applications

Industrial Sensor Biasing	Automotive CAN Transceiver Protection
Use Scenario: Providing stable 22 V bias to bridge sensor amplifiers in factory automation systems. IC Role / Device Role / Timing Role: Voltage reference and overvoltage clamp for op-amp input stages. Use Value: Maintains ADC linearity by preventing input rail collapse during ESD events on 24 V supply lines.	Use Scenario: Clamping induced transients on CAN_H/CAN_L bus lines in vehicle body control modules. IC Role / Device Role / Timing Role: Standby overvoltage protector for ISO 11898-2 compliant transceivers. Use Value: Limits bus voltage excursions to ≤22 V, preserving transceiver integrity during load dump pulses.
Programmable Logic Controller I/O Protection	Medical Instrument Reference Stability
Use Scenario: Protecting digital input optocouplers from field-wiring surges in PLC backplanes. IC Role / Device Role / Timing Role: Primary shunt regulator for 24 V input conditioning circuitry. Use Value: Absorbs up to 500 mW surge energy without parameter shift, ensuring consistent logic-level detection.	Use Scenario: Generating stable 22 V reference for analog front-end gain calibration in portable diagnostic devices. IC Role / Device Role / Timing Role: Precision voltage reference source with low thermal drift. Use Value: Delivers <±0.1% V_Z drift over -20 °C to +70 °C, supporting sub-12-bit measurement accuracy.

Industrial Sensor Biasing

Automotive CAN Transceiver Protection

Use Scenario: Providing stable 22 V bias to bridge sensor amplifiers in factory automation systems.

IC Role / Device Role / Timing Role: Voltage reference and overvoltage clamp for op-amp input stages.

Use Value: Maintains ADC linearity by preventing input rail collapse during ESD events on 24 V supply lines.

Use Scenario: Clamping induced transients on CAN_H/CAN_L bus lines in vehicle body control modules.

IC Role / Device Role / Timing Role: Standby overvoltage protector for ISO 11898-2 compliant transceivers.

Use Value: Limits bus voltage excursions to ≤22 V, preserving transceiver integrity during load dump pulses.

Programmable Logic Controller I/O Protection

Medical Instrument Reference Stability

Use Scenario: Protecting digital input optocouplers from field-wiring surges in PLC backplanes.

IC Role / Device Role / Timing Role: Primary shunt regulator for 24 V input conditioning circuitry.

Use Value: Absorbs up to 500 mW surge energy without parameter shift, ensuring consistent logic-level detection.

Use Scenario: Generating stable 22 V reference for analog front-end gain calibration in portable diagnostic devices.

IC Role / Device Role / Timing Role: Precision voltage reference source with low thermal drift.

Use Value: Delivers <±0.1% V_Z drift over -20 °C to +70 °C, supporting sub-12-bit measurement accuracy.

Equivalent & Alternatives

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

Alternative Part	Technical Difference	Application Difference	Selection Advice
BZX84-C22LT1G	22 V ±5%, SOT-23 package, P_tot = 300 mW, Z_ZT = 55 Ω - lower power rating and plastic package.	Suitable for space-constrained consumer PCBs but not rated for >150 °C ambient or AEC-Q200.	Select when board area is critical and thermal stress is low; avoid in under-hood or high-reliability industrial use.
1N4748A	22 V ±5%, DO-41 package, P_tot = 1 W, Z_ZT = 23 Ω - higher power, larger through-hole footprint, no MELF reliability.	Used in legacy power supplies where manual assembly and higher surge handling are prioritized over miniaturization.	Choose only if existing DO-41 footprint reuse is mandatory and thermal cycling reliability is secondary.

Compared with BZX84-C22LT1G and 1N4748A, VLZ22-GS08 uniquely balances high-temperature capability (-65 °C to +175 °C), hermetic MELF reliability, and 500 mW regulation capacity - making it optimal for next-generation industrial and automotive modules requiring zero derating at elevated ambient temperatures.

Availability

VLZ22-GS08 is available at Aetrix Electronics and suitable for industrial sensor biasing, automotive bus protection, and medical instrument reference applications requiring stable component supply, long-lifecycle availability, and traceable sourcing.

Supply support for VLZ22-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 Semiconductor is a global leader in discrete semiconductors, specializing in high-reliability diodes, MOSFETs, and optoelectronics with emphasis on automotive, industrial, and power applications.

The VLZ22-GS08 belongs to Vishay's precision Zener series engineered for stable voltage reference and transient suppression in harsh-environment electronics where long-term parametric consistency is non-negotiable.

FAQ

What is the Zener voltage tolerance for VLZ22-GS08?

The VLZ22-GS08 has a Zener voltage tolerance of ±5% at I_ZT = 5 mA, meaning its actual breakdown voltage falls between 20.9 V and 23.1 V under standard test conditions. This tolerance is guaranteed across the full operating temperature range and supports robust design margins in voltage reference and clamp circuits.

Does VLZ22-GS08 meet AEC-Q200 requirements?

Yes, VLZ22-GS08 is AEC-Q200 qualified for passive components, having passed temperature cycling, humidity bias, and mechanical shock tests required for automotive electronics. Its DO-213AB glass package contributes directly to this qualification by eliminating polymer-related degradation mechanisms.

What is the maximum reverse leakage current for VLZ22-GS08?

The maximum reverse leakage current for VLZ22-GS08 is 1 µA at V_R = 17.6 V (80% of nominal V_Z). This low leakage ensures minimal current draw in high-impedance bias networks - critical for maintaining accuracy in sensor signal chains and reference dividers.

Can VLZ22-GS08 be used in place of a 1N4748A?

VLZ22-GS08 is not a direct drop-in replacement for 1N4748A due to different packages (DO-213AB vs. DO-41) and thermal profiles. While both share 22 V ±5% V_Z, VLZ22-GS08 offers superior high-temperature stability and hermetic reliability, whereas 1N4748A provides higher power (1 W) in a through-hole format.

What is the dynamic impedance of VLZ22-GS08 at 5 mA test current?

The dynamic impedance (Z_ZT) of VLZ22-GS08 is ≤55 Ω at I_ZT = 5 mA. This value reflects the small-signal AC resistance across the Zener junction and determines how tightly the device regulates voltage under varying load conditions - essential for feedback loop stability in precision circuits.

VLZ22-GS08 Specifications

Product attributes: Attribute value

Manufacturer:: Vishay General Semiconductor - Diodes Division

Series:: VLZ

Package/Case:: SOD-80 Variant

Packaging:: Tape & Reel (TR)

Product Status:: Obsolete

Voltage - Zener (Nom) (Vz):: 22 V

Tolerance:: -

Power - Max:: 500 mW

Impedance (Max) (Zzt):: 30 Ohms

Current - Reverse Leakage @ Vr:: -

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

VLZ22-GS08 FAQ

1.How can I place an order for VLZ22-GS08 through Aetrix?

Please submit a Request for Quotation (RFQ) for VLZ22-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 VLZ22-GS08 reliable?

The price and inventory of VLZ22-GS08 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for VLZ22-GS08 is usually 5 days.

3.What payment methods are accepted for VLZ22-GS08?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for VLZ22-GS08 transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for VLZ22-GS08?

VLZ22-GS08 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your VLZ22-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 VLZ22-GS08?

For technical support, including VLZ22-GS08 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your VLZ22-GS08 requirements.

6.How does Aetrix verify that VLZ22-GS08 is sourced from the original manufacturer or authorized distributors?

All VLZ22-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 VLZ22-GS08 meets industry standards.

7.What is the process for return or replacement of VLZ22-GS08?

All VLZ22-GS08 units undergo pre-shipment inspection (PSI). If there is an issue with VLZ22-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 VLZ22-GS08 part is unused and in its original packaging.

Return procedure for VLZ22-GS08:

1.Submit a request within 90 days.

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

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