LEDs and Photodetectors - Industrial Fiber Optics, Inc.

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LEDs and Photodetectors

Industrial Fiber Optics produces a wide variety of low-cost, medium frequency fiber optic devices for use with plastic fiber cable. This product family contains 17 different devices — nine LEDs and eight photodetectors. Each device consists of a PBT housing and cinch nut with an internal active element such as an LED or photodetector. The PBT housing holds the active element and optimizes the physical connection between the optical fiber and the active component. The cinch nut holds the fiber in place without requiring the expense and labor of a fiber connection or termination.

Applications and Features

LEDs

Stock Number	λ(nm)	Δλ(nm)	P_lmin⁽¹⁾ (µw)	T_R⁽²⁾	T_F⁽²⁾	Distance (m)	General Comments or Application	RoHS
IF E91A	940	40	50	1.0 µs	1.0 µs	< 10	Lowest cost device in portfolio for short distance applications	Yes
IF E91D	870	30	200	3 ns	3 ns	< 10	Lowest cost, high electrical bandwidth device	Yes
IF E92A	430	65	25	.5 µs	.5 µs	< 50	430 nm blue light for sensor applications in a convenient F/O package	Yes
IF E92B	470	25	75	.6 µs	.6 µs	< 50	430 nm blue light for sensor applications in a convenient F/O package	Yes
IF E93	530	50	95	3.5 ns	16 ns	< 150	Longest distance device selected for attenuation minimum in PMMA fiber core	Yes
IF E96	660	20	125	.1 µs	.1 µs	< 75	Lowest cost visible red LED device in portfolio	Yes
IF E97	660	40	250	.5 µs	.5 µs	< 100	High power red LED for low data rates	Yes
IF E98	650	20	200	8 ns	8 ns	< 65(4)	High power, fast electrical switching times for 50 Mbps applications	Yes
IF E99	650	10	700	3.5 ns	3.5 ns	< 100(5)	Very high power device for 100 Mbps	Yes

1 Optical power measured from the end of a 1mm core plastic fiber 1m long, NA=.47 and LED IF =20 mA.

4 Distance when mated with the IF-D97 photologic detector.

2 Rise and fall times are measured from the 10% to 90% and 90% to 10% points.

5 When matched with the IF-D98 photologic detector.

3 Exact operating distance depends on the photodetector selected and in some cases the electrical bandwidth of accompanying circuits.

Photodetectors

Stock Number	Type	T_R⁽¹⁾	T_F⁽¹⁾	T_P	Responsitivity⁽²⁾	Threshold⁽³⁾	General Comments or Application	RoHS
IF D91	Diode	5 ns	5 ns	N/A	0.2 µA/µW	N/A	Highest electrical bandwidth device suitable for analog/digital applications	Yes
IF D92	Transistor	20 µs	20 µs	N/A	50 µA/µW	N/A	Lowest cost, simplest to use photodetector	Yes
IF D93	Darlington	5 ms	2.5 ms	N/A	200 µA/µW	N/A	Highest responsivity linear detector in portfolio	Yes
IF D95OC	Logic	.1 µs	.1 µs	8.0 µs	N/A	1.0 µW -30 dBm	Identical to IF-D95T except with open collector output	Yes
IF D95T	Logic	70 ns	70 ns	8.0 µs	N/A	1.0 µW -30 dBm	Totem-pole output device for data rates up to 150 kbps	Yes
IF D96F	Logic			65ns	N/A	3.5 µW -24.5 dBm	Open-collector output device for data rates up to 5 Mbps	Yes
IF D97	Logic	7 ns	7 ns	12 ns	N/A	17 µW -17.5 dBm	Totem-pole output device for data rates up to 55 Mbps	Yes
IF D98	Logic	3.5 ns	3.5 ns	6 ns	N/A	6.3 µW -22 dBm	Device suitable for data rates up to 155 Mbps(5)	No

1 Rise times and fall times are measured from the 10% to 90% and 90% to 10% points, respectively.

2 Optical power measured from polished end of 1000 µm plastic optical fiber connected to Helium Neon laser producing radiation at 632.8 nm in wavelength.

3 λ=660 nm.

4 Threshold is the optical power that the photologic switches from a low to high, or from high to low.

5 This device has internal gain control circuitry that makes it unsuitable for applications under 4 Mbps.