L-3VEGW T-1(3mm) Bi-Color Indicator Lamp Datasheet – Kingbright

Category: Electronics, Kingbright Corporation, Optoelectronics

Summary of Kingbright L-3VEGW T-1(3mm) Bi-Color Indicator Lamp

The L-3VEGW datasheet presents detailed information about the T-1(3mm) Bi-Color Indicator Lamp produced by Kingbright, with a focus on its features, physical dimensions, electrical and optical specifications, and absolute maximum ratings. Designed for efficient performance, the lamp offers several advantages including uniform light output, low power consumption, integration with current technology (IC compatibility), and the longevity and reliability associated with solid-state components. This lamp is also compliant with RoHS standards.

Features

The Bi-Color Indicator Lamp is characterized by high efficiency in both red and green light output. The red component is manufactured using Gallium Arsenide Phosphide on Gallium Phosphide, while the green component is produced from Gallium Phosphide. This design ensures low power usage alongside a steady and even light distribution. Additionally, the lamp has three leads, with one common lead that simplifies connection.

Physical and Electrical Specifications

Kingbright delineates the physical dimensions of the lamp in millimeters, with a note that tolerance is ±0.25mm unless specified otherwise. The lead spacing is measured at the package’s base. With regards to electrical characteristics, we see typical values at an ambient temperature of 25°C, including parameters such as peak and dominant wavelengths (red: 627/625 nm, green: 565/568 nm), spectral line half-width, capacitance (15 pF for both red and green), forward voltage, and reverse current with specified test conditions.

Optical Characteristics

The lamp’s brightness is quantified by its intensity value (measured in millicandela, mcd) at a standard testing current of 20mA. Furthermore, the viewing angle is defined at 20½ where the luminous intensity reaches half the value of its optical centerline. The datasheet specifies typical intensity values for the red (40 mcd) and green (35 mcd) lights, emphasizing their high efficiency.

Absolute Maximum Ratings

Kingbright includes a section detailing the absolute maximum ratings for the indicator lamp, which outlines the upper limits for power dissipation, forward current, peak forward current, reverse voltage, as well as operating and storage temperatures. The product is specified to sustain a power dissipation of 105 mW with different forward currents for red (30 mA) and green (25 mA) lights. It can also handle a peak forward current of 160 mA for red and 140 mA for green, under specific operation conditions including duty cycle and pulse width. It’s important for users to note that the maximum operating and storage temperature range is -40°C to +85°C, and that specific temperatures and timeframes are highlighted for lead soldering processes.

The data sheet was checked and approved by Allen Liu and J. Lu respectively, with revision number V.8, as indicated on the pages dated March 23, 2005. This datasheet covers 3 pages of which the provided details are from the first two.