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4N38A from TFK

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4N38A

Manufacturer: TFK

PHOTO TRANSISTOR (AC LINE/DIGITAL LOGIC ISOLATOR)

Partnumber Manufacturer Quantity Availability
4N38A TFK 100 In Stock

Description and Introduction

PHOTO TRANSISTOR (AC LINE/DIGITAL LOGIC ISOLATOR) The part 4N38A is an optocoupler manufactured by TFK (formerly known as Telefunken). It consists of a gallium arsenide infrared LED optically coupled to a silicon phototransistor. The device is designed for use in general-purpose switching and linear applications. Key specifications include:

- **Isolation Voltage**: 5300 Vrms
- **Collector-Emitter Voltage (VCEO)**: 30 V
- **Emitter-Collector Voltage (VECO)**: 7 V
- **Collector Current (IC)**: 50 mA
- **Current Transfer Ratio (CTR)**: 20% to 300% (depending on the forward current)
- **Forward Current (IF)**: 60 mA
- **Power Dissipation**: 150 mW
- **Operating Temperature Range**: -55°C to +100°C
- **Package**: DIP-6 (Dual In-line Package with 6 pins)

The 4N38A is commonly used in applications requiring electrical isolation, such as signal transmission, power supply feedback, and interfacing between different voltage levels.

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