VLZ20-GS08 Equivalent & Substitute Parts

Part Overview

The VLZ20-GS08 is a Zener Diode rated at 20 V with 500 mW power dissipation in a Surface Mount SOD-80 QuadroMELF package. Manufactured by Vishay General Semiconductor - Diodes Division, this component is classified as Obsolete. Due to its obsolete status, identifying equivalent substitute parts with identical electrical and mechanical specifications is essential for design continuity and procurement planning. The substitute part maintains functional equivalence while offering active product status and improved availability.

Substiute Parts

VLZ20-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 862VLZ20-GS08 Datasheet

Current PartRFQ

TLZ20-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 981TLZ20-GS08 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VLZ20-GS08 is determined by strict equivalence across the following electrical and mechanical parameters:

• Zener Voltage: 20 V nominal
• Power Dissipation: 500 mW maximum
• Impedance: 28 Ohms maximum
• Forward Voltage: 1.5 V maximum at 200 mA
• Operating Temperature Range: -65°C to 175°C
• Package Type: SOD-80 Surface Mount
• Automotive Grade: AEC-Q101 qualified
• Compliance: ROHS3 compliant, REACH unaffected

The substitute part TLZ20-GS08 meets all electrical specifications identically. The primary difference is the package variant designation (MiniMELF versus QuadroMELF) and product status (Active versus Obsolete). Both variants utilize the SOD-80 form factor and are mechanically compatible for surface mount assembly.

Parameter Comparison

Engineering Selection Recommendations

The TLZ20-GS08 is a direct electrical equivalent to the VLZ20-GS08 across all specified parameters. Selection of the substitute part is justified on the following grounds:

Product Status: The VLZ20-GS08 is classified as Obsolete, creating long-term supply risk. The TLZ20-GS08 maintains Active status, ensuring continued availability and manufacturing support.

Electrical Equivalence: Both parts share identical zener voltage (20 V), power rating (500 mW), impedance (28 Ohms), and forward voltage characteristics (1.5 V @ 200 mA). Operating temperature range is identical (-65°C to 175°C).

Compliance and Certification: Both parts are ROHS3 compliant and REACH unaffected. The VLZ20-GS08 carries explicit Automotive grade and AEC-Q101 qualification; the TLZ20-GS08 specifications do not explicitly list these certifications in the provided data.

Package Compatibility: Both parts utilize SOD-80 Surface Mount packaging. The package variant designation (QuadroMELF versus MiniMELF) reflects internal construction differences but maintains mechanical compatibility for standard surface mount assembly processes.

Procurement Advantage: The TLZ20-GS08 has 923 pieces in stock compared to 777 pieces for the obsolete VLZ20-GS08, providing improved availability for new production and replacement inventory.

Frequently Asked Questions (FAQ)

Q: Are the VLZ20-GS08 and TLZ20-GS08 electrically identical?

A: Yes. Both parts have identical zener voltage (20 V), power dissipation (500 mW), impedance (28 Ohms), forward voltage (1.5 V @ 200 mA), and operating temperature range (-65°C to 175°C).

Q: What is the difference between QuadroMELF and MiniMELF package variants?

A: Both are SOD-80 form factor packages. QuadroMELF and MiniMELF represent different internal construction and lead configurations within the same overall package footprint. Both are surface mount compatible and mechanically interchangeable for standard PCB assembly.

Q: Why is the VLZ20-GS08 marked as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued active production. The TLZ20-GS08 provides functional continuity with Active product status and ongoing manufacturing support.

Q: Can I use TLZ20-GS08 in place of VLZ20-GS08 in existing designs?

A: Yes. Electrical specifications are identical. Mechanical compatibility is maintained through the SOD-80 package standard. Verify PCB footprint compatibility with your assembly documentation.

Q: Does the TLZ20-GS08 meet Automotive grade and AEC-Q101 requirements?

A: The provided specifications for TLZ20-GS08 do not explicitly list Automotive grade or AEC-Q101 qualification. If these certifications are required for your application, contact the manufacturer to confirm qualification status.

Q: What is the Moisture Sensitivity Level for both parts?

A: Both parts have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

Q: Are both parts RoHS compliant?

A: Yes. Both VLZ20-GS08 and TLZ20-GS08 are ROHS3 compliant and REACH unaffected.