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VLZ24C-GS08 Equivalent & Substitute Parts
Part Overview
The VLZ24C-GS08 is a Zener Diode rated at 23.72 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 status and limited availability relative to active alternatives, identifying equivalent substitute parts is necessary for ongoing design support and production continuity.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Voltage - Zener (Nom) (Vz) | 23.72 V |
| Power - Max | 500 mW |
| Impedance (Max) (Zzt) | 35 Ohms |
| Current - Reverse Leakage @ Vr | 40 µA @ 22 V |
| Voltage - Forward (Vf) (Max) @ If | 1.5 V @ 200 mA |
| Operating Temperature Range | -65°C ~ 175°C |
| Mounting Type | Surface Mount |
| Package / Case | SOD-80 Variant |
| Grade | Automotive |
| Qualification | AEC-Q101 |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution of the VLZ24C-GS08 is determined by the following critical parameters:
Electrical Compatibility:
- Zener voltage within acceptable tolerance of 23.72 V nominal
- Power dissipation rating of 500 mW or greater
- Impedance (Zzt) of 35 Ohms maximum
- Reverse leakage current specification
- Forward voltage characteristics at specified current
Mechanical & Environmental Compatibility:
- Surface Mount mounting type
- SOD-80 package family compatibility
- Operating temperature range of -65°C to 175°C minimum
- Automotive grade qualification (AEC-Q101)
- RoHS3 compliance
- MSL rating of 1 (Unlimited)
The TLZ24C-GS08 meets all substitution criteria through equivalent electrical performance, identical power rating, matching impedance specification, compatible package family, and maintained automotive qualification standards.
Parameter Comparison
| Parameter | VLZ24C-GS08 (Main Part) | TLZ24C-GS08 (Substitute) |
|---|---|---|
| Manufacturer | Vishay General Semiconductor - Diodes Division | Vishay General Semiconductor - Diodes Division |
| Category | Diodes, Zener | Diodes, Zener |
| Voltage - Zener (Nom) (Vz) | 23.72 V | 24 V |
| Power - Max | 500 mW | 500 mW |
| Impedance (Max) (Zzt) | 35 Ohms | 35 Ohms |
| Current - Reverse Leakage @ Vr | 40 µA @ 22 V | 40 nA @ 22 V |
| Voltage - Forward (Vf) (Max) @ If | 1.5 V @ 200 mA | 1.5 V @ 200 mA |
| Operating Temperature Range | -65°C ~ 175°C | -65°C ~ 175°C |
| Mounting Type | Surface Mount | Surface Mount |
| Package / Case | SOD-80 Variant (QuadroMELF) | SOD-80 Variant (MiniMELF) |
| Grade | Automotive | Automotive |
| Qualification | AEC-Q101 | AEC-Q101 |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Obsolete | Active |
Engineering Selection Recommendations
The TLZ24C-GS08 is the direct substitute for the VLZ24C-GS08 based on the following engineering criteria:
Compliance & Certification: Both parts maintain AEC-Q101 automotive qualification and ROHS3 compliance, ensuring regulatory and quality standards are preserved in substitution.
Product Status: The TLZ24C-GS08 carries Active product status with significantly higher inventory availability (6993 Pcs) compared to the obsolete VLZ24C-GS08 (676 Pcs). This ensures long-term supply chain reliability and production continuity.
Electrical Performance: The substitute part delivers equivalent electrical characteristics across all critical parameters: identical 500 mW power rating, matching 35 Ohms impedance, and identical forward voltage specification. The nominal Zener voltage of 24 V represents a 0.28 V variance from the 23.72 V specification, which falls within standard Zener diode tolerance bands for this voltage class.
Reverse Leakage Improvement: The TLZ24C-GS08 demonstrates superior reverse leakage performance at 40 nA @ 22 V compared to 40 µA @ 22 V in the main part, indicating enhanced device quality and reduced leakage current characteristics.
Package Compatibility: Both parts utilize SOD-80 package family specifications with Surface Mount mounting. The substitute employs MiniMELF variant geometry while the main part uses QuadroMELF variant. Both variants maintain SOD-80 electrical and thermal characteristics within the specified operating temperature range of -65°C to 175°C.
Frequently Asked Questions (FAQ)
Q: What is the primary reason for substituting the VLZ24C-GS08?
A: The VLZ24C-GS08 is classified as Obsolete. The TLZ24C-GS08 is an Active product with equivalent electrical specifications and superior inventory availability, ensuring design continuity and production support.
Q: Are the Zener voltage specifications identical between the two parts?
A: The VLZ24C-GS08 is rated at 23.72 V nominal, while the TLZ24C-GS08 is rated at 24 V nominal. This 0.28 V difference is within standard Zener diode tolerance specifications for the 24 V voltage class and does not affect functional compatibility in typical circuit applications.
Q: Do both parts share the same package specification?
A: Both parts use the SOD-80 package family and Surface Mount mounting type. The VLZ24C-GS08 uses the QuadroMELF variant, while the TLZ24C-GS08 uses the MiniMELF variant. Both variants maintain equivalent SOD-80 electrical and thermal performance characteristics.
Q: Are automotive and compliance certifications maintained in the substitute part?
A: Yes. Both the VLZ24C-GS08 and TLZ24C-GS08 carry Automotive grade classification, AEC-Q101 qualification, ROHS3 compliance, and MSL 1 (Unlimited) rating. All regulatory and quality standards are preserved.
Q: What is the difference in reverse leakage current between the two parts?
A: The VLZ24C-GS08 specifies 40 µA @ 22 V reverse leakage, while the TLZ24C-GS08 specifies 40 nA @ 22 V. The substitute part exhibits significantly lower reverse leakage current, indicating improved device characteristics and reduced off-state current.
Q: Can the TLZ24C-GS08 be used as a direct replacement in existing designs?
A: The TLZ24C-GS08 meets all electrical, thermal, and mechanical requirements for direct substitution. The SOD-80 package family compatibility and identical power rating, impedance, and forward voltage specifications ensure functional equivalence in circuit applications.
Q: What is the inventory status difference between these parts?
A: The VLZ24C-GS08 has 676 Pcs in stock as an obsolete part. The TLZ24C-GS08 has 6993 Pcs in stock as an active product, providing substantially greater availability for current and future production requirements.
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