Vishay Semiconductor Opto Division
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BPW85C
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BPW85C: Product Overview and Specifications

Introduction

The BPW85C is a phototransistor belonging to the category of optoelectronic components. It is widely used in various applications due to its unique characteristics and functional features.

Basic Information Overview

  • Category: Optoelectronic Component
  • Use: Light Sensing and Detection
  • Characteristics: High Sensitivity, Fast Response Time
  • Package: TO-18 Metal Can Package
  • Essence: Converts light energy into electrical signals
  • Packaging/Quantity: Typically available in reels or trays

Specifications

  • Peak Wavelength: 880 nm
  • Collector-Emitter Voltage: 32 V
  • Emitter-Collector Voltage: 5 V
  • Collector Current: 50 mA
  • Power Dissipation: 200 mW
  • Operating Temperature Range: -40°C to +100°C

Detailed Pin Configuration

The BPW85C phototransistor has a standard TO-18 metal can package with three pins: 1. Collector (C) 2. Base (B) 3. Emitter (E)

Functional Features

  • High sensitivity to light in the near-infrared spectrum
  • Fast response time for rapid detection and signal processing
  • Low dark current for accurate light sensing in low-light conditions

Advantages and Disadvantages

Advantages

  • High sensitivity enables precise light detection
  • Fast response time allows for quick signal processing
  • Low dark current enhances performance in low-light environments

Disadvantages

  • Limited spectral range compared to some other photodetectors
  • Susceptible to ambient light interference in certain applications

Working Principles

The BPW85C operates based on the principle of light-induced conductivity modulation. When exposed to light, the base-collector junction undergoes a change in conductivity, leading to a corresponding change in collector current. This mechanism enables the conversion of light energy into electrical signals.

Detailed Application Field Plans

The BPW85C finds extensive use in the following application fields: - Optical encoders for position sensing - Ambient light sensors in automotive and consumer electronics - Industrial automation for light detection and control systems - Medical devices for non-invasive optical sensing

Detailed and Complete Alternative Models

Some alternative models to the BPW85C include: - BPW34: A similar phototransistor with a broader spectral range - BPW21R: Designed for high-speed light detection applications - BPW17N: Offers enhanced sensitivity for low-light environments

In conclusion, the BPW85C phototransistor serves as a versatile optoelectronic component with specific advantages and limitations. Its high sensitivity, fast response time, and reliable performance make it a preferred choice for various light sensing and detection applications across different industries.

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Seznam 10 běžných otázek a odpovědí souvisejících s aplikací BPW85C v technických řešeních

  1. What is the BPW85C photodiode used for?

    • The BPW85C photodiode is commonly used for light detection and measurement in various technical solutions.

  2. What is the spectral response range of the BPW85C?

    • The BPW85C has a spectral response range of approximately 350nm to 1100nm, making it suitable for a wide range of applications.

  3. Can the BPW85C be used for proximity sensing?

    • Yes, the BPW85C can be used for proximity sensing applications due to its sensitivity to ambient light.

  4. What are the typical operating conditions for the BPW85C?

    • The BPW85C operates well under normal ambient conditions and at temperatures ranging from -40°C to 100°C.

  5. Is the BPW85C sensitive to infrared light?

    • Yes, the BPW85C is sensitive to both visible and infrared light, allowing for versatile use in light detection applications.

  6. What is the typical responsivity of the BPW85C?

    • The typical responsivity of the BPW85C is around 0.55 A/W at 880nm, providing efficient light-to-electrical signal conversion.

  7. Can the BPW85C be used in automotive applications?

    • Yes, the BPW85C can be used in automotive applications such as rain sensors, twilight switches, and other light detection systems.

  8. Does the BPW85C require any external amplification?

    • Depending on the specific application, the BPW85C may require external amplification to achieve the desired signal levels.

  9. What are the packaging options available for the BPW85C?

    • The BPW85C is available in various package types, including standard through-hole packages and surface-mount packages for easy integration into different designs.

  10. Are there any special considerations for circuit design when using the BPW85C?

    • It's important to consider the ambient light conditions, filtering requirements, and signal conditioning when designing circuits using the BPW85C to ensure optimal performance.