VLZ12-GS08 Equivalent & Substitute Parts

Part Overview

The VLZ12-GS08 is a Zener Diode rated at 12 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, indicating that direct procurement from primary sources may be limited. Identification of equivalent substitute parts is necessary to ensure design continuity and maintain supply chain reliability for applications requiring this specific electrical and mechanical specification.

Substiute Parts

VLZ12-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 753VLZ12-GS08 Datasheet

Current PartRFQ

TLZ12-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 925TLZ12-GS08 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VLZ12-GS08 is determined by strict equivalence across the following critical parameters:

• Zener Voltage: 12 V nominal
• Power Dissipation: 500 mW maximum
• Impedance: 12 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
• Regulatory Compliance: ROHS3, AEC-Q101 Automotive Grade

The substitute part TLZ12-GS08 meets all electrical specifications and operates within the same temperature range. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and share identical electrical performance characteristics. The primary distinction is packaging format: VLZ12-GS08 uses QuadroMELF configuration while TLZ12-GS08 uses MiniMELF configuration, both within the SOD-80 package family. The TLZ12-GS08 carries Active product status, ensuring ongoing availability and supply chain support.

Parameter Comparison

Engineering Selection Recommendations

The TLZ12-GS08 is a direct electrical equivalent to the VLZ12-GS08 with all critical electrical parameters matching exactly. Selection of TLZ12-GS08 as a substitute is supported by:

1. Electrical Equivalence: Identical Zener voltage, power rating, impedance, and forward voltage characteristics ensure functional compatibility in circuit applications.

2. Temperature Performance: Both parts operate across the full -65°C to 175°C range, maintaining performance in automotive and industrial environments.

3. Regulatory Compliance: Both parts are ROHS3 compliant with MSL 1 rating, meeting environmental and moisture handling requirements.

4. Supply Continuity: TLZ12-GS08 carries Active product status, providing assured long-term availability compared to the Obsolete VLZ12-GS08.

5. Package Compatibility: Both parts use SOD-80 surface mount packages. The transition from QuadroMELF to MiniMELF variant requires PCB footprint verification to confirm mechanical fit within the existing design layout.

For applications where AEC-Q101 automotive qualification is a mandatory requirement, design validation should confirm that the substitute part meets all application-specific automotive standards before production implementation.

Frequently Asked Questions (FAQ)

Q: Are the electrical characteristics of VLZ12-GS08 and TLZ12-GS08 identical?

A: Yes. Both parts have identical Zener voltage (12 V), power dissipation (500 mW), impedance (12 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 packaging?

A: Both are SOD-80 surface mount packages manufactured by Vishay. QuadroMELF and MiniMELF refer to different physical form factors within the SOD-80 family. PCB footprint compatibility must be verified before substitution, as the physical dimensions and lead configurations differ between these variants.

Q: Can I use TLZ12-GS08 as a direct replacement in my existing PCB design?

A: Electrical substitution is valid. However, mechanical compatibility depends on whether your PCB footprint accommodates the MiniMELF variant. Footprint verification is required before assembly.

Q: Why is VLZ12-GS08 marked as Obsolete?

A: Obsolete status indicates the part is no longer in active production. TLZ12-GS08, with Active status, represents the current equivalent offering from the manufacturer.

Q: Are both parts RoHS compliant?

A: Yes. Both VLZ12-GS08 and TLZ12-GS08 are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: Does TLZ12-GS08 have AEC-Q101 qualification?

A: AEC-Q101 qualification is specified for VLZ12-GS08. Qualification status for TLZ12-GS08 is not provided in the available technical data. Applications requiring automotive qualification should confirm compliance with the substitute part's datasheet.

Q: What inventory levels are available?

A: VLZ12-GS08 has 733 pieces in stock (Obsolete status). TLZ12-GS08 has 824 pieces in stock (Active status), providing better long-term supply assurance.