VLZ36-GS18 Equivalent & Substitute Parts

Part Overview

The VLZ36-GS18 is a Zener Diode rated at 36 V with 500 mW power dissipation, manufactured by Vishay General Semiconductor - Diodes Division. This component is packaged in SOD-80 QuadroMELF surface mount configuration and is qualified to AEC-Q101 automotive standards. The part is currently classified as obsolete, making identification of equivalent and substitute components necessary for ongoing design support, maintenance, and production continuity. Substitute parts must maintain electrical performance specifications while accommodating packaging and availability constraints.

Substiute Parts

VLZ36-GS18

Vishay General Semiconductor - Diodes DivisionIn Stock: 1058VLZ36-GS18 Datasheet

Current PartRFQ

TLZ36-GS18

Vishay General Semiconductor - Diodes DivisionIn Stock: 727TLZ36-GS18 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VLZ36-GS18 is determined by the following critical parameters:

Electrical Specifications (Must Match):

• Zener voltage: 36 V nominal
• Maximum power dissipation: 500 mW
• Maximum impedance: 75 Ohms
• Forward voltage: 1.5 V maximum at 200 mA
• Operating temperature range: -65°C to 175°C

Mechanical & Packaging Considerations:

• Surface mount technology required
• SOD-80 package family compatibility
• Automotive grade qualification (AEC-Q101)
• RoHS3 compliance
• MSL 1 rating

Substitute Identification: The TLZ36-GS18 qualifies as a direct substitute based on identical electrical specifications and automotive qualification. The primary distinction is the packaging variant: TLZ36-GS18 uses SOD-80 MiniMELF (DO-213AC) configuration supplied in Tape & Reel format, whereas the VLZ36-GS18 uses SOD-80 QuadroMELF packaging. Both variants maintain the same electrical performance and thermal operating range required for automotive applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: TLZ36-GS18

The TLZ36-GS18 is the direct electrical equivalent of the VLZ36-GS18. Both components share identical zener voltage, power rating, impedance, forward voltage characteristics, and operating temperature specifications. The TLZ36-GS18 is currently in active production status, providing supply continuity for the obsolete VLZ36-GS18.

Packaging Consideration:

The primary difference between these parts is the SOD-80 package variant. The VLZ36-GS18 uses QuadroMELF geometry, while the TLZ36-GS18 uses MiniMELF (DO-213AC) geometry. Both are SOD-80 family packages with surface mount compatibility. PCB layout modifications may be required to accommodate the different footprint dimensions between QuadroMELF and MiniMELF variants.

Compliance & Qualification:

Both parts are RoHS3 compliant and carry MSL 1 rating. The VLZ36-GS18 explicitly carries AEC-Q101 automotive qualification. The TLZ36-GS18 is designated as automotive grade. Designs requiring explicit AEC-Q101 certification should confirm qualification status with the manufacturer prior to implementation.

Supply & Availability:

The TLZ36-GS18 is supplied in Tape & Reel packaging format, suitable for automated assembly processes. The VLZ36-GS18 is obsolete with limited remaining inventory. For new designs or production continuity, the TLZ36-GS18 is the recommended selection.

Frequently Asked Questions (FAQ)

Q: Can the TLZ36-GS18 directly replace the VLZ36-GS18 in existing designs?

A: Electrical substitution is direct. The TLZ36-GS18 maintains identical zener voltage (36 V), power dissipation (500 mW), impedance (75 Ohms), and operating temperature range (-65°C to 175°C). PCB layout modification is required due to different SOD-80 package variants (MiniMELF versus QuadroMELF). Footprint dimensions differ between these package types.

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

A: Both are SOD-80 package family designations for surface mount zener diodes. QuadroMELF and MiniMELF refer to different physical geometries and lead configurations within the SOD-80 standard. The electrical performance is identical; the mechanical footprint differs. PCB design files must be updated to reflect the specific package variant.

Q: Are both parts automotive qualified?

A: The VLZ36-GS18 carries explicit AEC-Q101 qualification. The TLZ36-GS18 is designated as automotive grade. Confirm AEC-Q101 certification status with Vishay General Semiconductor - Diodes Division if this qualification is mandatory for your application.

Q: What is the impact of the product status change from Obsolete to Active?

A: The VLZ36-GS18 is obsolete with limited inventory availability. The TLZ36-GS18 is in active production, ensuring long-term supply continuity. For new designs or production planning beyond current inventory levels, the TLZ36-GS18 is the appropriate selection.

Q: Are there any compliance or regulatory differences between these parts?

A: Both parts are RoHS3 compliant, carry MSL 1 rating, and are REACH unaffected. ECCN and HTSUS classifications are identical. No regulatory or compliance barriers exist for substitution.

Q: What packaging format is the TLZ36-GS18 supplied in?

A: The TLZ36-GS18 is supplied in Tape & Reel (TR) format, standard for automated surface mount assembly. The VLZ36-GS18 packaging format is not specified in the provided data.