VLZ24-GS18 Equivalent & Substitute Parts

Part Overview

The VLZ24-GS18 is a Zener diode rated at 24 V nominal voltage with 500 mW power dissipation, manufactured by Vishay General Semiconductor - Diodes Division. This component is designed for surface mount applications in the SOD-80 QuadroMELF package format. The part is classified as obsolete, necessitating identification of active equivalent components that maintain electrical and mechanical compatibility for ongoing production and repair applications.

Substiute Parts

VLZ24-GS18

Vishay General Semiconductor - Diodes DivisionIn Stock: 1239VLZ24-GS18 Datasheet

Current PartRFQ

TLZ24-GS18

Vishay General Semiconductor - Diodes DivisionIn Stock: 1182TLZ24-GS18 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VLZ24-GS18 is determined by equivalence across the following critical parameters:

• Zener Voltage: 24 V nominal
• Power Dissipation: 500 mW maximum
• Impedance: 35 Ohms maximum
• Forward Voltage: 1.5 V maximum at 200 mA
• Operating Temperature Range: -65°C to 175°C
• Surface Mount Configuration: SOD-80 package family
• Automotive Grade: AEC-Q101 qualification
• Compliance: ROHS3 and REACH requirements

The TLZ24-GS18 meets all electrical specifications and compliance requirements. The primary distinction is the packaging variant within the SOD-80 family: the substitute uses SOD-80 MiniMELF format (DO-213AC) compared to the original QuadroMELF format. Both variants are surface mount configurations within the SOD-80 standard, with compatible footprint dimensions for PCB integration.

Parameter Comparison

Engineering Selection Recommendations

The TLZ24-GS18 serves as the active equivalent for the obsolete VLZ24-GS18. Both components are manufactured by Vishay General Semiconductor - Diodes Division and maintain identical electrical specifications across all critical parameters: 24 V zener voltage, 500 mW power rating, 35 Ohms maximum impedance, and -65°C to 175°C operating temperature range.

The primary consideration for selection is the package variant. The TLZ24-GS18 utilizes the SOD-80 MiniMELF format (DO-213AC), which differs from the original QuadroMELF format. Both are SOD-80 standard packages suitable for surface mount assembly. PCB layout verification is required to confirm footprint compatibility with existing designs, as MiniMELF and QuadroMELF variants have different physical dimensions despite sharing the SOD-80 classification.

The TLZ24-GS18 is currently in active production status with confirmed inventory availability, ensuring supply chain continuity. Both components maintain ROHS3 compliance and MSL 1 moisture sensitivity rating, supporting standard handling and storage protocols.

Frequently Asked Questions (FAQ)

Q: Can the TLZ24-GS18 directly replace the VLZ24-GS18 without circuit modification?

A: Electrical substitution is valid. The TLZ24-GS18 maintains identical zener voltage (24 V), power dissipation (500 mW), impedance (35 Ohms), and forward voltage characteristics. PCB layout modification may be required due to package variant differences between QuadroMELF and MiniMELF formats within the SOD-80 family.

Q: What is the difference between SOD-80 QuadroMELF and SOD-80 MiniMELF?

A: Both are SOD-80 standard packages for surface mount diodes. QuadroMELF and MiniMELF are variant designations indicating different physical dimensions and lead configurations. Verification of PCB footprint compatibility is necessary before component substitution.

Q: Are there compliance or qualification differences between the two parts?

A: The VLZ24-GS18 carries automotive grade classification with AEC-Q101 qualification. The TLZ24-GS18 substitute data does not specify automotive grade or AEC-Q101 status. Applications requiring automotive qualification should verify component certification with the manufacturer.

Q: Is the TLZ24-GS18 available in the same packaging format as the VLZ24-GS18?

A: The TLZ24-GS18 is supplied in Tape & Reel (TR) packaging, while the original part packaging format is not specified in the provided data. Both components use surface mount SOD-80 packages but with different physical variants (MiniMELF vs. QuadroMELF).

Q: What is the operating temperature range for both components?

A: Both the VLZ24-GS18 and TLZ24-GS18 operate across the identical temperature range of -65°C to 175°C, ensuring thermal compatibility in equivalent applications.

Q: Are both components RoHS compliant?

A: Yes, both the VLZ24-GS18 and TLZ24-GS18 are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating, supporting standard component handling and storage requirements.