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TZMB75-GS18 Equivalent & Substitute Parts
Part Overview
The TZMB75-GS18 is an automotive-grade Zener diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates at a nominal Zener voltage of 75 V with a maximum power dissipation of 500 mW in the SOD-80 MiniMELF package. The device is classified as Active product status and carries AEC-Q101 automotive qualification, making it suitable for regulated voltage applications in automotive and industrial environments. Substitute parts are identified to provide design flexibility, inventory optimization, and supply chain continuity while maintaining electrical and mechanical compatibility.
Substiute Parts
Key Parameters
| Parameter | Value | Unit |
|---|---|---|
| Voltage - Zener (Nom) | 75 | V |
| Tolerance | ±2% | % |
| Power - Max | 500 | mW |
| Impedance (Max) | 250 | Ohms |
| Current - Reverse Leakage @ Vr | 100 | nA @ 56 V |
| Voltage - Forward (Vf) (Max) @ If | 1.5 | V @ 200 mA |
| Operating Temperature Range | -65 to 175 | °C |
| Package / Case | DO-213AC, MINI-MELF, SOD-80 | |
| Grade | Automotive | |
| Qualification | AEC-Q101 | |
| RoHS Status | ROHS3 Compliant | |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitute parts for the TZMB75-GS18 are identified based on strict electrical and mechanical parameter matching. The substitution criteria are defined by the following key parameters:
- Nominal Zener voltage: 75 V
- Voltage tolerance: ±2%
- Maximum power dissipation: 500 mW
- Package type: SOD-80 MiniMELF (DO-213AC)
- Impedance (Max): 250 Ohms
- Reverse leakage current: 100 nA @ 56 V
- Forward voltage: 1.5 V @ 200 mA
- Operating temperature range: -65°C to 175°C
- Automotive grade with AEC-Q101 qualification
- RoHS3 compliance
Parts meeting all these parameters are classified as parametric equivalents and direct substitutes. The TZMB75-GS08 is identified as a parametric equivalent based on identical electrical specifications and package configuration.
Parameter Comparison
| Parameter | TZMB75-GS18 | TZMB75-GS08 | Match |
|---|---|---|---|
| Voltage - Zener (Nom) | 75 V | 75 V | Yes |
| Tolerance | ±2% | ±2% | Yes |
| Power - Max | 500 mW | 500 mW | Yes |
| Impedance (Max) | 250 Ohms | 250 Ohms | Yes |
| Current - Reverse Leakage @ Vr | 100 nA @ 56 V | 100 nA @ 56 V | Yes |
| Voltage - Forward (Vf) (Max) @ If | 1.5 V @ 200 mA | 1.5 V @ 200 mA | Yes |
| Operating Temperature Range | -65°C to 175°C | -65°C to 175°C | Yes |
| Package / Case | DO-213AC, MINI-MELF, SOD-80 | DO-213AC, MINI-MELF, SOD-80 | Yes |
| Grade | Automotive | Automotive | Yes |
| Qualification | AEC-Q101 | AEC-Q101 | Yes |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Yes |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | Yes |
Engineering Selection Recommendations
The TZMB75-GS08 is a direct parametric equivalent to the TZMB75-GS18. Both parts are manufactured by Vishay General Semiconductor - Diodes Division within the TZM series and share identical electrical characteristics, mechanical specifications, and compliance certifications.
Selection between these parts is based on availability and supply chain considerations. Both parts carry Active product status, AEC-Q101 automotive qualification, and ROHS3 compliance. The TZMB75-GS08 currently maintains higher inventory levels (17,544 pieces) compared to the TZMB75-GS18 (757 pieces), making it suitable for applications requiring extended lead time assurance or volume procurement.
No electrical performance differences exist between these parts. PCB layout, thermal management, and circuit design considerations remain identical for both variants.
Frequently Asked Questions (FAQ)
Q: Can TZMB75-GS08 be used as a direct replacement for TZMB75-GS18?
A: Yes. The TZMB75-GS08 is a parametric equivalent with identical Zener voltage (75 V), power rating (500 mW), tolerance (±2%), impedance (250 Ohms), and package configuration (SOD-80 MiniMELF). All electrical and mechanical specifications match exactly.
Q: Are there any differences in automotive qualification between these parts?
A: No. Both TZMB75-GS18 and TZMB75-GS08 carry AEC-Q101 automotive qualification and are classified as Automotive grade components. They meet identical compliance requirements for automotive applications.
Q: What is the difference between the part number suffixes GS18 and GS08?
A: The suffix designates the tape reel configuration and packaging variant from Vishay. Both variants contain identical die and electrical performance. The difference relates to packaging format and supplier logistics only.
Q: Can these parts be used interchangeably in PCB assembly?
A: Yes. Both parts use the SOD-80 MiniMELF package (DO-213AC) with identical footprint and pin configuration. No PCB layout modifications are required for substitution.
Q: What is the operating temperature range for both parts?
A: Both TZMB75-GS18 and TZMB75-GS08 operate across -65°C to 175°C. This range is identical for both variants.
Q: Are both parts RoHS compliant?
A: Yes. Both parts are ROHS3 compliant and carry Moisture Sensitivity Level 1 (Unlimited), indicating no special moisture handling requirements during storage or assembly.
Q: Which part should be selected for new designs?
A: Selection is based on supply chain availability and inventory requirements. Both parts are Active status and suitable for new designs. The TZMB75-GS08 offers higher current inventory availability.
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