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BPX 38
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BPX 38: Phototransistor for Optoelectronic Applications

Introduction

The BPX 38 is a phototransistor designed for various optoelectronic applications. This entry provides an overview of the product, including its category, use, characteristics, packaging, specifications, pin configuration, functional features, advantages and disadvantages, working principles, application field plans, and alternative models.

Basic Information Overview

  • Category: Optoelectronics
  • Use: Detection of light in electronic circuits
  • Characteristics: High sensitivity, fast response time
  • Package: TO-18 metal can package
  • Essence: Phototransistor
  • Packaging/Quantity: Typically available in reels or tubes containing multiple units

Specifications

  • Collector-Emitter Voltage (VCEO): 30V
  • Emitter-Collector Voltage (VECO): 5V
  • Collector Current (IC): 20mA
  • Power Dissipation (PD): 100mW
  • Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The BPX 38 phototransistor has three pins: 1. Collector (C) 2. Base (B) 3. Emitter (E)

Functional Features

  • High sensitivity to light
  • Fast response time
  • Low dark current

Advantages and Disadvantages

Advantages

  • High sensitivity enables detection of low-intensity light
  • Fast response time allows for quick signal processing
  • Low dark current minimizes noise in low-light conditions

Disadvantages

  • Susceptible to ambient light interference
  • Limited operating temperature range

Working Principles

When exposed to light, the BPX 38 phototransistor conducts current between the collector and emitter, allowing it to be used as a light sensor in electronic circuits.

Detailed Application Field Plans

The BPX 38 is commonly used in the following applications: - Light sensing in automatic lighting systems - Optical encoders for position sensing - Object detection in industrial automation

Detailed and Complete Alternative Models

  • BPX 61: Higher sensitivity and lower dark current
  • BPW 34: Enhanced spectral response for specific wavelength ranges
  • BPW 21: Lower capacitance for high-speed applications

In conclusion, the BPX 38 phototransistor is a versatile component with high sensitivity and fast response time, suitable for various optoelectronic applications. Its compact TO-18 package and reliable performance make it a popular choice for light sensing in electronic circuits.

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Liste 10 almindelige spørgsmål og svar relateret til anvendelsen af BPX 38 i tekniske løsninger

  1. What is BPX 38?

    • BPX 38 is a high-speed silicon PIN photodiode used for various technical applications, including light detection and optical data transmission.

  2. What are the key features of BPX 38?

    • The key features of BPX 38 include high speed, low capacitance, and high photosensitivity, making it suitable for fast optical communication systems.

  3. How is BPX 38 typically used in technical solutions?

    • BPX 38 is commonly used in fiber optic communication systems, laser-based distance measurement, and other applications requiring high-speed light detection.

  4. What is the spectral range of BPX 38?

    • BPX 38 has a spectral range of approximately 350 to 1100 nm, allowing it to detect a wide range of light wavelengths.

  5. What are the typical operating conditions for BPX 38?

    • BPX 38 operates well under ambient light conditions and can also be used in low-light environments with appropriate amplification.

  6. Can BPX 38 be used in conjunction with optical filters?

    • Yes, BPX 38 can be paired with optical filters to narrow its spectral response and improve its performance in specific wavelength ranges.

  7. What are the packaging options available for BPX 38?

    • BPX 38 is available in various package types, including surface-mount and through-hole packages, to accommodate different integration requirements.

  8. Does BPX 38 require any special handling during assembly?

    • While BPX 38 is sensitive to static discharge, standard ESD precautions during assembly and handling are usually sufficient to prevent damage.

  9. What are the typical output characteristics of BPX 38?

    • BPX 38 produces a photocurrent proportional to the incident light intensity, making it suitable for direct interface with amplifiers or signal processing circuits.

  10. Are there any application notes or reference designs available for using BPX 38 in technical solutions?

    • Yes, many manufacturers provide application notes and reference designs for integrating BPX 38 into various technical solutions, offering guidance on circuit design and performance optimization.