## Summary of the QT Optoelectronics PCB Mount LED Indicator Datasheet

This document is a datasheet for a variety of PCB mount LED indicators manufactured by QT Optoelectronics. Here's a breakdown of the key information:

1. Product Range:

️· Types: The datasheet covers a wide range of LEDs, including:
- Single-color LEDs (Red, Yellow, Green, High-Efficiency Red)
- Bicolor (Red/Green) LEDs
- LEDs with integrated resistors.
️· Package Styles: The datasheet details LEDs in the following package styles:
- T-1 ¾ (5mm) - multiple configurations for stacking and multiples
- Single T-1 ¾(5mm)

2. Key Features & Specifications:

️· Electrical Characteristics: The datasheet provides typical forward voltage (VF) and forward current (mA) values for each LED type.
️· Dimensions: Detailed package dimensions are provided in inches and millimeters, showing variations based on the package style and figure number.
️· Lens Color: LEDs are available with diffused lenses, and some with clear lenses (denoted by an asterisk *).
️· Stackability: Some configurations are designed to be stackable for increased brightness or indicator arrangements.

️· Multiple Configurations: LEDs are available in multiples of 2, 3 or 4.

3. Organization & Notes:

️· The datasheet is organized by package style, with multiple pages dedicated to each type.
️· General notes throughout the document cover tolerances, electrical value typicality, lens type, and the definition of the red cathode for bicolor LEDs.
️· Specific notes clarify options for multiples of LEDs.

4. Contact Information:

️· The datasheet includes contact information for QT Optoelectronics offices in the United States, France, Germany, the United Kingdom, and Asia/Pacific.



In essence, this document serves as a comprehensive reference guide for engineers and designers selecting LED indicators for their PCB designs. It provides the necessary technical information to make informed decisions based on specific application requirements.