4N38 Optoisolator 5KV Transistor W/Base 6DIP

Description

Product Overview

The 4N38 Optoisolator is a high‑performance optoelectronic component designed to provide robust electrical isolation between circuits while allowing fast data transmission. Featuring a 5kV isolation rating, this device safeguards low‑voltage control circuitry from high‑voltage transients, making it an essential building block in modern industrial systems. Housed in a compact 6‑pin DIP (Dual In‑Line Package), the optoisolator occupies minimal board space, which is critical for densely populated printed circuit boards. The internal architecture combines a high‑efficiency infrared LED emitter with a phototransistor detector, delivering low propagation delay and high linearity across a wide temperature range. Constructed from durable materials, the package meets RoHS compliance and is rated for operation from –40 °C to +85 °C, ensuring reliable performance in demanding environments. The component is manufactured by AVLIS CO, a reputable supplier known for stringent quality control and consistent product specifications. Detailed specifications include a forward current of 20 mA, collector‑emitter voltage of 80 V, and a typical CTR (Current Transfer Ratio) of 100 % at 5 mA, providing designers with predictable behavior for precise circuit design.

Usage

Engineers and system integrators find the 4N38 Optoisolator particularly valuable in applications where safety and signal integrity are paramount. Typical use cases include power supply regulation, where the optoisolator separates the feedback loop from the high‑voltage switching stage, preventing noise coupling and protecting sensitive microcontroller inputs. In motor drive circuits, the device isolates control signals from the power stage, allowing safe operation of high‑current motors while maintaining precise speed and torque control. Safety interlock systems also benefit from the 5 kV isolation capability, ensuring that fault conditions are detected without exposing personnel to hazardous voltages. The compact 6‑DIP form factor enables easy integration into existing board layouts, and the device can be mounted using standard through‑hole technology, simplifying assembly and repair processes. Additionally, the optoisolator is suitable for medical equipment, industrial automation, and renewable energy converters, where compliance with IEC 60730 and other safety standards is required. Its fast response time supports high‑frequency PWM signals, making it compatible with modern digital control schemes.

Why Choose Us

Choosing the 4N38 Optoisolator from AVLIS CO means partnering with a manufacturer that prioritizes reliability, consistency, and customer support. Each unit undergoes rigorous testing, including electrical stress screening, thermal cycling, and optical performance verification, to guarantee that the product meets or exceeds its datasheet specifications. AVLIS CO maintains a transparent supply chain, providing traceability from raw material sourcing to final inspection, which is essential for industries that require strict quality assurance. The company also offers comprehensive technical documentation, including detailed application notes, design guidelines, and simulation models, helping engineers accelerate development cycles and reduce time‑to‑market. In addition to the product itself, AVLIS CO provides responsive after‑sales service, with a dedicated support team ready to assist with design queries, troubleshooting, and warranty claims. Customers benefit from fast shipping options, bulk pricing tiers, and the ability to request custom packaging or labeling for OEM projects. By selecting this optoisolator, you gain a component that not only meets high electrical standards but also comes backed by a partner committed to your long‑term success.

Key Features

• High 5kV isolation rating protects low‑voltage circuitry from dangerous transients, enhancing overall system safety.
• Compact 6‑DIP package saves board space and simplifies integration into existing designs without sacrificing performance.
• Fast response time and low propagation delay enable reliable operation with high‑frequency PWM and digital control signals.
• Robust construction rated for –40 °C to +85 °C operation ensures durability in harsh industrial environments.
• Dedicated technical support and comprehensive documentation from AVLIS CO provide confidence and assistance throughout product lifecycle.

FAQ

What is the maximum voltage the 4N38 Optoisolator can handle?

The device is rated for a maximum isolation voltage of 5 kV, which means it can safely separate circuits with up to 5,000 volts between the input and output sides without breakdown.

Can the 4N38 be used in high‑frequency applications?

Yes, the optoisolator features a fast infrared LED and phototransistor pair that provides low propagation delay, making it suitable for PWM frequencies up to several hundred kilohertz, depending on the circuit design.

Is the 4N38 Optoisolator RoHS compliant?

AVLIS CO ensures that the 4N38 Optoisolator complies with RoHS directives, meaning it is free of hazardous substances such as lead, mercury, cadmium, and certain flame retardants.

What support does AVLIS CO offer for design engineers?

AVLIS CO provides extensive application notes, reference designs, and simulation models, as well as a responsive technical support team that can help with schematic integration, layout optimization, and troubleshooting.

How does the 4N38 perform in extreme temperature conditions?

The component is specified to operate reliably from –40 °C to +85 °C, allowing it to function in both cold‑start environments and high‑temperature industrial settings without performance degradation.