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VLZ24C-GS18 Equivalent & Substitute Parts Reference
Part Overview
VLZ24C-GS18 is a Zener diode manufactured by Vishay General Semiconductor - Diodes Division in the Diodes, Zener category. It features a nominal Zener voltage of 23.72 V, maximum power dissipation of 500 mW, and is supplied in a SOD-80 QuadroMELF surface mount package. The device operates across a temperature range of -65°C to 175°C, with an automotive grade AEC-Q101 qualification. The product status is listed as Obsolete. Due to its obsolete status and ongoing application needs, identifying equivalent or substitute Zener diodes with similar electrical and mechanical parameters is essential to support continued product designs or maintenance activities.
Substiute Parts
Key Parameters
| Parameter | Main Part Value | Notes |
|---|---|---|
| Manufacturer | Vishay General Semiconductor - Diodes Division | -- |
| Category | Diodes, Zener | -- |
| Voltage - Zener (Nom) (Vz) | 23.72 V | Core electrical parameter |
| Power - Max | 500 mW | Maximum power dissipation |
| Impedance (Max) (Zzt) | 35 Ohms | Maximum dynamic impedance |
| Current - Reverse Leakage @ Vr | 40 µA @ 22 V | Reverse leakage current at specified voltage |
| Voltage - Forward (Vf) (Max) @ If | 1.5 V @ 200 mA | Maximum forward voltage |
| Operating Temperature | -65°C ~ 175°C | Operation range |
| Mounting Type | Surface Mount | Mechanical compatibility |
| Package / Case | SOD-80 Variant | Package form factor |
| Supplier Device Package | SOD-80 QuadroMELF | Package compatibility |
| RoHS Status | ROHS3 Compliant | Environmental compliance |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | Moisture sensitivity |
| REACH Status | REACH Unaffected | Chemical regulation compliance |
| AEC-Q101 Qualification | Automotive | Automotive grade requirement |
Substitute Part Grouping Explanation
The selection of substitute Zener diodes for VLZ24C-GS18 is strictly determined by a match or close correspondence in the following key parameters: nominal Zener voltage, maximum power dissipation, maximum dynamic impedance, reverse leakage current at specified voltage, maximum forward voltage, operating temperature, surface mount package compatibility, and relevant regulatory and automotive qualifications. Only parts matching or exceeding these criteria are grouped as valid substitutes.
Parameter Comparison
| Parameter | VLZ24C-GS18 | TLZ24C-GS18 |
|---|---|---|
| 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 | -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 |
| Supplier Device Package | SOD-80 QuadroMELF | SOD-80 MiniMELF |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) |
| REACH Status | REACH Unaffected | REACH Unaffected |
Engineering Selection Recommendations
The VLZ24C-GS18 is classified as Obsolete, while TLZ24C-GS18 is Active. Both Zener diode models are ROHS3 Compliant and REACH Unaffected, matching the environmental, health, and safety requirements. Both have a Moisture Sensitivity Level of 1 (Unlimited), ensuring storage and assembly process compatibility. TLZ24C-GS18 is supplied in SOD-80 MiniMELF/DO-213AC form factor, which aligns with SOD-80 series device mounting criteria. The substitute part meets all compliance and certification requirements stated in the input parameters.
Frequently Asked Questions (FAQ)
Q1: What are the primary criteria for selecting a substitute for VLZ24C-GS18?
A1: The primary criteria include nominal Zener voltage, power rating, maximum impedance, reverse leakage current, forward voltage rating, operating temperature range, package and mounting type, as well as regulatory and automotive qualifications.
Q2: Is TLZ24C-GS18 package compatible with VLZ24C-GS18?
A2: TLZ24C-GS18 is provided in SOD-80 MiniMELF (DO-213AC) package, which is consistent with standard SOD-80 surface mount diode footprints, matching SOD-80 QuadroMELF mounting requirements.
Q3: Are there any differences in regulatory compliance between the main and substitute diodes?
A3: Both VLZ24C-GS18 and TLZ24C-GS18 are ROHS3 Compliant and REACH Unaffected, with the same Moisture Sensitivity Level.
Q4: How close do the electrical parameters match between VLZ24C-GS18 and TLZ24C-GS18?
A4: The key parameters, including maximum power, impedance, and forward voltage, are equivalent. The Zener voltage is closely matched (23.72 V vs. 24 V).
Q5: Why substitute is necessary for VLZ24C-GS18?
A5: VLZ24C-GS18 is Obsolete, making it necessary to select a compatible Zener diode for ongoing production or maintenance activities.
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