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VLZ11-GS18 Equivalent & Substitute Parts
Part Overview
The VLZ11-GS18 is a Zener diode rated at 11 V nominal voltage with 500 mW maximum power dissipation, packaged in SOD-80 QuadroMELF surface mount configuration. Manufactured by Vishay General Semiconductor - Diodes Division, this component is classified as Automotive grade with AEC-Q101 qualification. The VLZ11-GS18 carries an Obsolete product status, necessitating identification of functionally equivalent active alternatives to support ongoing design requirements and procurement needs.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Voltage - Zener (Nom) | 11 V |
| Power - Max | 500 mW |
| Impedance (Max) | 10 Ohms |
| Voltage - Forward (Vf) (Max) @ If | 1.5 V @ 200 mA |
| Operating Temperature Range | -65°C ~ 175°C |
| Mounting Type | Surface Mount |
| Grade | Automotive |
| Qualification | AEC-Q101 |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the VLZ11-GS18 is determined by electrical and mechanical parameter equivalence within the Zener diode category. The critical parameters governing substitution are:
Electrical Parameters:
- Zener voltage: 11 V nominal
- Maximum power dissipation: 500 mW
- Maximum impedance: 10 Ohms
- Forward voltage: 1.5 V maximum at 200 mA
- Operating temperature range: -65°C to 175°C
Mechanical & Compliance Parameters:
- Surface mount configuration
- Automotive grade classification
- AEC-Q101 qualification
- ROHS3 compliance
- MSL 1 rating
The TLZ11-GS18 meets all electrical specifications and compliance requirements. The primary distinction is the package variant designation (QuadroMELF versus MiniMELF) and product status transition (Obsolete to Active), with both utilizing the SOD-80 form factor suitable for surface mount assembly.
Parameter Comparison
| Parameter | VLZ11-GS18 | TLZ11-GS18 |
|---|---|---|
| Manufacturer | Vishay General Semiconductor - Diodes Division | Vishay General Semiconductor - Diodes Division |
| Category | Diodes, Zener | Diodes, Zener |
| Voltage - Zener (Nom) | 11 V | 11 V |
| Power - Max | 500 mW | 500 mW |
| Impedance (Max) | 10 Ohms | 10 Ohms |
| Voltage - Forward (Vf) (Max) @ If | 1.5 V @ 200 mA | 1.5 V @ 200 mA |
| Operating Temperature | -65°C ~ 175°C | -65°C ~ 175°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | SOD-80 Variant | DO-213AC, MINI-MELF, SOD-80 |
| Grade | Automotive | Automotive |
| Qualification | AEC-Q101 | AEC-Q101 |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Obsolete | Active |
Engineering Selection Recommendations
The TLZ11-GS18 serves as the direct functional equivalent to the obsolete VLZ11-GS18. Both components are manufactured by Vishay General Semiconductor - Diodes Division and maintain identical electrical specifications across all critical parameters: 11 V zener voltage, 500 mW power rating, 10 Ohms maximum impedance, and -65°C to 175°C operating temperature range.
Both parts carry Automotive grade classification with AEC-Q101 qualification, ensuring suitability for automotive applications. Compliance certifications are equivalent: ROHS3 compliance, MSL 1 rating, and identical REACH and ECCN classifications.
The transition from VLZ11-GS18 (Obsolete, QuadroMELF variant) to TLZ11-GS18 (Active, MiniMELF variant) represents a product line evolution within the same manufacturer's portfolio. The TLZ11-GS18 is available in active production status with current inventory, supporting long-term supply chain continuity.
Frequently Asked Questions (FAQ)
Q: Are the VLZ11-GS18 and TLZ11-GS18 electrically interchangeable?
A: Yes. Both components share identical electrical specifications: 11 V nominal zener voltage, 500 mW maximum power dissipation, 10 Ohms maximum impedance, 1.5 V forward voltage at 200 mA, and -65°C to 175°C operating temperature range.
Q: What is the difference between QuadroMELF and MiniMELF packaging?
A: Both variants utilize the SOD-80 form factor for surface mount assembly. The QuadroMELF (VLZ11-GS18) and MiniMELF (TLZ11-GS18) designations indicate different physical package geometries within the SOD-80 classification. PCB layout and footprint design must accommodate the specific variant selected.
Q: Why is the VLZ11-GS18 listed as Obsolete?
A: The VLZ11-GS18 has reached end-of-life status in the manufacturer's product portfolio. The TLZ11-GS18 represents the active production equivalent, ensuring continued availability and supply chain support.
Q: Are both parts suitable for Automotive applications?
A: Yes. Both the VLZ11-GS18 and TLZ11-GS18 carry Automotive grade classification with AEC-Q101 qualification, meeting automotive industry reliability and quality standards.
Q: What is the Moisture Sensitivity Level for these components?
A: Both components are rated MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.
Q: Are there any compliance differences between the two parts?
A: No. Both components are ROHS3 compliant, REACH unaffected, and carry identical ECCN (EAR99) and HTSUS (8541.10.0050) classifications.
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