Description

The 314H Electronic Component Model falls under the category of IC Chips. In particular, it is a phototransistor that combines a photodiode and amplifier on a single silicon chip. Phototransistors are widely used in electronic devices that require greater output signal than what can be generated by a photodiode alone. The device can be viewed as a photodiode whose output photocurrent is fed into the base of a small-signal transistor. The typical gain of this phototransistor can range from 100 to over 1500.

Specifications and features

The 314H phototransistor features:

• Low-cost visible and near-IR photodetection;
• Gains ranging from 100 to over 1500;
• Moderately fast response times;
• Available in a wide range of packages including epoxy-coated, transfer-molded, cast, hermetic packages, chip form and surface mounting technology;
• Usable with almost any visible or near-infrared light source such as IREDs, neon, fluorescent, incandescent bulbs, lasers, flame sources, sunlight, etc.;
• Has the same general electrical characteristics as familiar signal transistors.

Application Scenarios

The 314H phototransistor can be used in various applications such as:

• Computer/business equipment;
• Write-protect control;
• Margin controls—printers;
• Industrial applications;
• LED light source—light pens;
• Security systems;
• Safety shields;
• Consumer products such as coin counters, lottery card readers, position sensors—joysticks, remote controllers—toys, appliances, audio/visual equipment, and games—laser tag; and
• Camera shutter control.

Comparison

• Low-cost visible and near-IR photodetection.
• Has a wide range of gains.
• Usable with almost any visible or near-infrared light source.
• Same general electrical characteristics as familiar signal transistors.

• Having a moderately fast response time, it may not be suitable for applications that require quick response time.
• May require an external circuitry for amplification of output signals.