VLZ7V5-GS18 Equivalent & Substitute Parts

Part Overview

The VLZ7V5-GS18 is a Zener Diode rated at 7.5 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 product status, identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Substiute Parts

VLZ7V5-GS18

Vishay General Semiconductor - Diodes DivisionIn Stock: 1254VLZ7V5-GS18 Datasheet

Current PartRFQ

TLZ7V5-GS18

Vishay General Semiconductor - Diodes DivisionIn Stock: 1084TLZ7V5-GS18 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VLZ7V5-GS18 is determined by the following critical electrical and mechanical parameters:

Electrical Parameters:

• Zener voltage rating: 7.5 V (nominal)
• Maximum power dissipation: 500 mW
• Maximum impedance: 8 Ohms
• Forward voltage: 1.5 V @ 200 mA
• Operating temperature range: -65°C ~ 175°C

Mechanical Parameters:

• Mounting type: Surface Mount
• Package family: SOD-80 (includes QuadroMELF and MiniMELF variants)

Compliance Parameters:

• Automotive Grade qualification (AEC-Q101)
• RoHS3 Compliance
• MSL Level 1

The substitute part TLZ7V5-GS18 meets all critical electrical specifications and operates within the same temperature range. Both parts share identical zener voltage, power rating, impedance, and forward voltage characteristics. The primary difference is the package variant (QuadroMELF versus MiniMELF) and product status (Obsolete versus Active).

Parameter Comparison

Engineering Selection Recommendations

The TLZ7V5-GS18 is a direct electrical substitute for the VLZ7V5-GS18. All critical electrical parameters—zener voltage, power dissipation, impedance, and forward voltage—are identical. Both components operate across the same temperature range and maintain RoHS3 compliance with MSL Level 1 rating.

The primary distinction is product status: the VLZ7V5-GS18 is Obsolete, while the TLZ7V5-GS18 is Active. This status difference, combined with the TLZ7V5-GS18's active inventory availability (1038 Pcs), makes it the preferred selection for new designs and ongoing production requirements.

The package variant difference (QuadroMELF to MiniMELF) represents a physical footprint change within the SOD-80 family. PCB layout and component placement must be evaluated to confirm mechanical compatibility with the MiniMELF package dimensions.

Frequently Asked Questions (FAQ)

Q: Can the TLZ7V5-GS18 replace the VLZ7V5-GS18 in existing designs?

A: Yes, from an electrical standpoint. The TLZ7V5-GS18 provides identical zener voltage (7.5 V), power rating (500 mW), impedance (8 Ohms), and forward voltage characteristics. PCB layout verification is required to confirm the MiniMELF package footprint is compatible with the original QuadroMELF placement.

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

A: Both are SOD-80 family packages for surface mount applications. QuadroMELF and MiniMELF are variant designations within this family, differing in physical dimensions and lead configuration. Component datasheets must be consulted for precise footprint specifications.

Q: Why is the VLZ7V5-GS18 marked as Obsolete?

A: Obsolete status indicates the manufacturer has discontinued production. The TLZ7V5-GS18, with Active status and current inventory, is the recommended alternative for ongoing component sourcing.

Q: Are both parts automotive-grade?

A: The VLZ7V5-GS18 carries Automotive Grade designation with AEC-Q101 qualification. The TLZ7V5-GS18 specifications provided do not explicitly list automotive grade or AEC-Q101 qualification. Applications requiring automotive certification should confirm qualification status with the manufacturer.

Q: What is the packaging difference between the two parts?

A: The VLZ7V5-GS18 is supplied in bulk packaging, while the TLZ7V5-GS18 is supplied in Tape & Reel (TR) format. This affects handling, storage, and automated assembly processes but does not impact electrical performance.

Q: Are both parts RoHS compliant?

A: Yes. Both the VLZ7V5-GS18 and TLZ7V5-GS18 are ROHS3 Compliant with MSL Level 1 (Unlimited moisture sensitivity level), indicating no special moisture protection requirements during storage and handling.