Pulse dependences of optical characteristics_LEDs

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Light Emitting Diodes

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Package TO-18
Package TO-5
Distribution of radiation
LEDs with PR

LED 1.6÷2.4 mm

Spectral Characteristics
Current Dependence
Pulse Duration Dependence
Temperature Dependence
Parameters

LED 2.7÷4.6 mm

Spectral Characteristics
Current Dependence
Pulse Duration Dependence
Temperature Dependence
Parameters
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	*Pulse Dependences of Optical Characteristics*
	Power characteristics of Light Emitting Diodes in different pulse regimes strongly depend on duty cycle. For receiving of maximum average power we recommend using of pulse regimes with duty cycle 50% or 25%, (but not hard CW where heating decreases power). For receiving of maximum peak power we recommend using of short pulse (less then 50 ms).

	Here are presented typical average vs. current and peak power vs. current characteristics of LED33 and LED43 measured at different pulse regimes in the range 5 ms ÷2 ms.

	These characteristics are measured at repetition rate 500 Hz. 50% duty cycle corresponds to 1 ms pulse duration. Average vs. current and peak power vs. current characteristics for models: LED27, LED29, LED31, LED36, LED38 and LED46 are similar.

Company contact: Nikolay Stoyanov ns@iropt6.ioffe.rssi.ru