Overview
The FOD814A3SD, produced by onsemi, is a phototransistor optocoupler that features two gallium arsenide infrared emitting diodes connected in inverse parallel, driving a silicon phototransistor output. This configuration is housed in a 4-pin dual in-line package (DIP) or surface mount technology (SMT) package with lead bend. The device is designed to provide reliable optical isolation and is suitable for various applications requiring AC input sensing and high insulation voltage.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Storage Temperature | −55 to +150 | °C |
| Operating Temperature | −55 to +105 | °C |
| Junction Temperature | −55 to +125 | °C |
| Lead Solder Temperature | 260 for 10 s | °C |
| Total Device Power Dissipation | 200 mW | mW |
| Input Current | ±50 mA | mA |
| Reverse Voltage | 6 V | V |
| Collector-Emitter Voltage | 70 V | V |
| Current Transfer Ratio (CTR) | 50–150% | % |
| Input-Output Isolation Voltage | 5000 VACRMS | VACRMS |
| Isolation Resistance | > 10^11 Ω | Ω |
| Isolation Capacitance | 0.6–1.0 pF | pF |
Key Features
- AC Input Response: Suitable for applications requiring AC line monitoring and sensing.
- High Current Transfer Ratio (CTR): The FOD814A3SD has a CTR range of 50–150%, ensuring reliable signal transfer.
- High Insulation Voltage: Offers up to 5000 VACRMS input-output isolation voltage, ensuring safe electrical insulation.
- Safety and Regulatory Approvals: Compliant with UL1577, DIN EN/IEC60747-5-5, and other safety standards.
- Pb-Free: Environmentally friendly packaging.
- Various Package Options: Available in DIP and SMT packages with lead bend.
Applications
- AC Line Monitor: Ideal for monitoring AC lines in various electrical systems.
- Unknown Polarity DC Sensor: Can be used to sense DC signals without regard to polarity.
- Telephone Line Interface: Suitable for interfacing with telephone lines due to its high insulation and safety features.
- Power Supply Regulators: Can be used in power supply regulators to ensure safe and reliable operation.
- Digital Logic Inputs and Microprocessor Inputs: Applicable in digital logic and microprocessor systems requiring optical isolation.
Q & A
- What is the FOD814A3SD used for?
The FOD814A3SD is used for applications requiring AC input sensing, high insulation voltage, and reliable optical isolation, such as AC line monitoring, unknown polarity DC sensing, and telephone line interfaces.
- What is the current transfer ratio (CTR) of the FOD814A3SD?
The CTR of the FOD814A3SD ranges from 50% to 150%.
- What are the safety and regulatory approvals for the FOD814A3SD?
The device is compliant with UL1577, DIN EN/IEC60747-5-5, and other relevant safety standards.
- What is the maximum input-output isolation voltage of the FOD814A3SD?
The maximum input-output isolation voltage is 5000 VACRMS.
- Is the FOD814A3SD Pb-free?
- What are the available package options for the FOD814A3SD?
The device is available in both DIP and SMT packages with lead bend.
- What is the operating temperature range of the FOD814A3SD?
The operating temperature range is from -55°C to +105°C.
- What is the maximum collector-emitter voltage of the FOD814A3SD?
The maximum collector-emitter voltage is 70 V.
- How much power can the FOD814A3SD dissipate?
The total device power dissipation is 200 mW.
- What is the isolation resistance of the FOD814A3SD?
The isolation resistance is greater than 10^11 Ω.
