1. Document Overview

️· Title: DUAL COLOR LED LAMPS (LSRF9UG42293/R1-PF Data Sheet)
️· Manufacturer: LIGITEK ELECTRONICS CO., LTD.
️· Document Date: 2006, February 27
️· Revision: A
️· Part Number: LSRF9UG42293/R1-PF
️· Confidentiality: Property of Ligitek Only (meaning it is likely not intended for general public distribution).

2. Absolute Maximum Ratings (General for the Device Series - SRF9UG & SRF9UG )

Parameter	Symbol	Red (SRF9UG)	Green (SRF9UG)	Unit
Forward Current	IF	30	30	mA
Peak Forward Current (Duty Cycle 1/10 @ 10kHz)	IFP	90	60	mA
Power Dissipation	PD	75	75	mW
Reverse Current	Ir	10	10	μA
Electrostatic Discharge Voltage	ESD	2000	2000	V
Operating Temperature	Topr	-40 to +85	-40 to +85	°C
Storage Temperature	Tstg	-40 to +100	-40 to +100	°C

3. Electrical/Optical Characteristics (Specific to Part Number LSRF9UG42293/R1-PF)

Parameter	Red (LSRF9UG42293/R1-PF)	Green (LSRF9UG42293/R1-PF)	Unit
Dominant Wavelength (λD)	630	574	nm
Spectral Half-Width (Δλ)	20	20	nm
Forward Voltage (Vf) @ 20mA	1.5 to 2.4	1.7 to 2.6	V
Luminous Intensity @ 20mA	5.0 to 10.0	5.0 to 10.0	mcd
Viewing Angle (2θ)	30	30	degrees

4. Test Standards and Descriptions

The document outlines several environmental and reliability tests performed on the LEDs. Here's a summary:

️· Operating Life Test: Tests the long-term performance under electrical and thermal stress.
️· High Temperature Storage Test: Evaluates resistance to high-temperature storage conditions.
️· Low Temperature Storage Test: Evaluates resistance to low-temperature storage conditions.
️· High Temperature High Humidity Test: Tests performance under tropical humidity conditions.
️· Thermal Shock Test: Tests resistance to rapid temperature changes.
️· Solder Resistance Test: Evaluates the ability to withstand soldering temperatures.
️· Solderability Test: Verifies the ease of soldering the LEDs.

Key Takeaways:

️· This datasheet defines specifications and test conditions for dual-color (red/green) LEDs manufactured by Ligitek.
️· It emphasizes the device's electrical and environmental robustness.
️· The part number LSRF9UG42293/R1-PF is a specific configuration within the series, with defined wavelength and voltage parameters.
️· The document includes detailed test standards that are referenced.