รายละเอียดเพิ่มเติม
New Original ZM4746 series ZM4746A-GS08 Zener Diode 18V 1W ±5% Surface Mount DO-213AB
Диод Зенера, MELF, 18 В, 1 Вт, DO-213AB, 5 %, 2 вывод(-ов), 175 °C
ZM4746A-GS08 is a surface mount Zener diode produced by VISHAY, a world-renowned semiconductor manufacturer. It belongs to the ZM4746 series and is widely used in voltage regulation, voltage clamping and overvoltage protection scenarios of electronic circuits. The following is a detailed explanation of its core parameters and functional characteristics:
1. Basic parameters
| Parameters | Value/Characteristics | Description |
| Zener voltage (Vz) | 18V ±5% | The nominal voltage regulation value is 18 volts, and the voltage tolerance is ±5%, ensuring stable output when the voltage fluctuates. |
| Power dissipation (Pd) | 1W | The maximum power dissipation is 1 watt, which is suitable for circuit design with medium power requirements. |
| Zener impedance (Zz) | 20Ω (@test current 14mA) | The dynamic impedance is low, which reduces the impact of voltage fluctuations on the circuit. |
| Reverse leakage current (Ir) | 5µA (@13.7V reverse voltage) | The extremely low leakage current reduces power consumption and improves circuit efficiency. |
| Package type | DO-213AB (MELF-2) | The glass encapsulated surface mount device has a compact size (length 5.2mm × diameter 2.6mm), which is suitable for automated production. |
| อุณหภูมิในการทำงาน | -65℃ to +175℃ | The wide temperature range adapts to extreme environments such as industrial control or automotive electronics. |
| Environmental certification | RoHS compliant, lead-free production | It complies with EU environmental standards and is suitable for fields with strict environmental protection requirements. |
2. Functional characteristics
- Precise voltage regulation: As a Zener diode, its core function is to maintain a stable output voltage. When the input voltage exceeds 18V, the diode turns on, clamps the voltage within a safe range, and protects the subsequent circuit from overvoltage damage.
- Low power design: The reverse leakage current is only 5µA, which significantly reduces static power consumption and improves power efficiency, especially suitable for battery-powered or energy-saving devices.
- Packaging: Provides excellent sealing and environmental resistance, moisture-proof, dust-proof, and extended service life.
- Wide temperature operation: It can operate stably from -65℃ to +175℃, adapting to harsh scenarios such as industrial control and automotive electronics.
- Surface mount compatibility: DO-213AB package supports automated patch production, improves manufacturing efficiency, and reduces manual errors.
III. Application scenarios
- Power management
1. Voltage reference or overvoltage protection in switching power supplies and linear regulators.
2. Stable output voltage in chargers and adapters to prevent overcharging and damage to equipment. - Signal conditioning
1. Signal clamping in communication equipment to ensure signal integrity.
2. Suppress voltage spikes in industrial control systems to protect sensitive components. - Consumer electronics
1. Power protection for portable devices such as smartphones and tablets.
2. Stable sensor power supply in smart home devices to improve system stability. - Automotive electronics
1. Voltage regulation requirements for in-vehicle entertainment systems and ECUs (electronic control units).
2. High temperature and vibration resistance design to adapt to complex automotive environments.
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