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Vishay 1W 12 V General Purpose Zener Diode Single 2-Pin Surface Mount DO-214AC SML4742A-E3/61
Specifications
| Country of Origin | China |
|---|---|
| Brand | Vishay |
| Height | 2.29mm |
| Length | 4.5mm |
| Model | SML4742A-E3/61 |
| Mount Type | Surface |
| Maximum Operating Temperature | 150°C |
| Package Type | DO-214AC |
| Minimum Operating Temperature | -65°C |
| Standards/Approvals | RoHS |
| Pin Count | 2 |
| Number of Elements per Chip | 1 |
| Automotive Standard | AEC-Q101 |
| Maximum Power Dissipation Pd | 1W |
| Diode Configuration | Single |
| Test Current It | 21mA |
| Maximum Reverse Leakage Current | 5μA |
| Nominal Zener Voltage Vz | 12V |
| Zener Type | General Purpose |
| Maximum Zener Impedance | 9Ω |
Key Features
- Features a nominal zener voltage of 12 V with ±5% tolerance.
- Single diode configuration with two pins for mounting.
- Maximum power dissipation of 1 watt for reliable operation.
- Low zener impedance of 9 ohms for stable voltage regulation.
- Tested at a current of 21 mA ensuring accurate performance.
- Robust operating temperature range from -65°C to 150°C for industrial use.
- Complies with RoHS environmental standards and automotive AEC-Q101 qualification.
- Compact dimensions with 2.29 mm height and 4.5 mm length package size.
Product Description
Vishay SML4742A-E3/61 is a high-quality 1 watt general purpose zener diode intended for precise voltage regulation in electronic circuits. It features a nominal zener voltage of 12 volts with a 5% tolerance, making it suitable for maintaining a stable voltage reference in a variety of industrial and commercial semiconductor applications.
This diode is configured as a single element and packaged in a compact DO-214AC surface mount plastic enclosure, optimized for automated PCB assembly. The package complies with Underwriters Laboratories 94 V-0 flammability standards, enhancing safety and durability.
The device supports a maximum power dissipation of 1 watt, with a low zener impedance of 9 ohms, reducing voltage variation under load. It operates effectively between -65°C and 150°C, complying with both RoHS regulations and the automotive-grade AEC-Q101 standard for reliability in harsh environments.
Its maximum reverse leakage current is limited to 5 μA, reducing energy loss and enhancing circuit efficiency. The diode's test current is 21 mA, reflecting the conditions for which its voltage rating is guaranteed.
Measuring 2.29 mm in height and 4.5 mm in length, this surface mount diode supports compact circuit designs while maintaining robust performance.
Applications include voltage regulation in power supplies, protection circuits, automotive electronics, instrumentation, and general semiconductor circuits requiring stable voltage references and surge protection.
Nominal zener voltage: 12 V with ±5% tolerance. Maximum power dissipation of 1 W to handle moderate power loads. Surface mount DO-214AC package ensuring ease of installation. Automotive AEC-Q101 qualification for reliability.
Wide operating temperature range enables use in industrial environments. Low impedance and leakage current enhance circuit efficiency. Single diode configuration with 2-pin setup for standard mounting.
This product's robust specifications and industry certifications make it an excellent choice for designers seeking reliable zener diode solutions for electronic and automotive applications.
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Frequently Asked Questions
The nominal zener voltage of this diode is 12 volts with a tolerance of ±5%.
It supports a maximum power dissipation of 1 watt, allowing it to handle moderate power loads effectively.
The maximum zener impedance is 9 ohms, which helps in reducing voltage variation under load.
This model operates effectively within a temperature range of -65°C to 150°C.
It is packaged in a DO-214AC surface mount enclosure, which is optimized for automated PCB assembly.
The test current for this diode is 21 mA, which reflects the conditions under which its voltage rating is guaranteed.
This model features a single diode configuration with two pins for mounting.
It complies with the automotive AEC-Q101 qualification, ensuring reliability in automotive applications.
The maximum reverse leakage current is limited to 5 μA, which helps in enhancing circuit efficiency.
This diode complies with RoHS environmental standards, ensuring it meets specific safety and environmental criteria.
It is suitable for applications including voltage regulation in power supplies, protection circuits, and automotive electronics.
The dimensions of this model are 2.29 mm in height and 4.5 mm in length, making it compact for circuit designs.
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