0.040 (1.02) 0.100 (2.54) 0.050 (1.27) 45 0.040 (1.02) 13 0.030 (0.76) nom 0.184 (4.67) 0.209 (5.31) 1.00 (25.4) min 0.255 (6.48) anode (case) ?0.020 (0.51) 2x package dimensions features ? good optical to mechanical alignment ? mechanically and wavelength matched to the to-18 series phototransistor ? hermetically sealed package ? high irradiance level notes: 1. dimensions for all drawings are in inches (mm). 2. tolerance of .010 (.25) on all non-nominal dimensions unless otherwise specified. description the led55b/led55c/led56 are 940 nm leds in a narrow angle, to-46 package. anode (connected to case) 3 1 cathode schematic ? ? 2001 fairchild semiconductor corporation ds300312 6/05/01 1 of 4 www.fairchildsemi.com gaas infrared emitting diode led55b led55c led56
www.fairchildsemi.com 2 of 4 6/05/01 ds300312 parameter symbol rating unit operating temperature t opr -65 to +125 c storage temperature t stg -65 to +150 c soldering temperature (iron) (3,4,5 and 6) t sol-i 240 for 5 sec c soldering temperature (flow) (3,4 and 6) t sol-f 260 for 10 sec c continuous forward current i f 100 ma forward current (pw, 1s; 200hz) i f 10 a reverse voltage v r 3v power dissipation (t a = 25c) (1) p d 170 mw power dissipation (t c = 25c) (2) p d 1.3 w absolute maximum ratings (t a = 25c unless otherwise specified) parameter test conditions symbol min typ max units peak emission wavelength i f = 100 ma ! p ? 940 ? nm emission angle at 1/2 power i f = 100 ma " ? 8 ? deg. forward voltage i f = 100 ma v f ? ? 1.7 v reverse leakage current v r = 3 v i r ? ? 10 a total power led55b (7) i f = 100 ma p o 3.5 ? ? mw total power led55c (7) i f = 100 ma p o 5.4 ? ? mw total power led56 (7) i f = 100 ma p o 1.5 ? ? mw rise time 0-90% of output t r ? 1.0 ? s fall time 100-10% of output t f ? 1.0 ? s electrical / optical characteristics (t a =25c) (all measurements made under pulse conditions) note: 1. derate power dissipation linearly 1.70 mw/c above 25c ambient. 2. derate power dissipation linearly 13.0 mw/c above 25c case. 3. rma flux is recommended. 4. methanol or isopropyl alcohols are recommended as cleaning agents. 5. soldering iron tip 1/16? (1.6mm) minimum from housing. 6. as long as leads are not under any stress or spring tension 7. total power output, p o , is the total power radiated by the device into a solid angle of 2 # steradians. gaas infrared emitting diode led55b led55c led56
figure 1. power output vs. input current 0.01 .001 .002 .005 .01 .02 .05 0.1 0.2 0.5 1.0 2 5 10 i f , forward current (a) 0.02 0.05 0.1 0.2 0.5 1.0 2 5 10 20 50 100 p o , normalized power output i f = 100 ma t a = 25 c normalized to continuous forward current p w = 80 sec pulsed forward current figure 2. power output vs. temperature 0 0.2 -50 t a , ambient temperature ( c) 0.4 0.6 0.8 1.0 1.2 1.4 -25 0 150 p o , normalized power output 75 50 25 100 125 i f = 100 ma t a = 25 c normalized to figure 5. typical radiation pattern 0 20 -50 - angular displacement from optical axis (degrees) 40 60 80 100 -40 -30 -20 50 relative output (%) 10 0 -10 20 30 40 figure 4. forward voltage vs. forward current 1 2 .9 v f , forward voltage (v) 4 6 8 10 20 40 60 80 100 1.0 1.1 1.2 i f , forward current (ma) 1.5 1.4 1.3 figure 3. forward voltage vs. forward current .01 .02 v f , forward voltage (v) .04 .06 .08 0.1 0.2 0.4 0.6 0.8 1.0 2.0 4.0 6.0 8.0 10 01 2 8 i f , forward current (a) 5 4 36710 9 t a = 100 c 25 c -55 c ds300312 6/05/01 3 of 4 www.fairchildsemi.com typical performance curves gaas infrared emitting diode led55b led55c led56
disclaimer fairchild semiconductor reserves the right to make changes without further notice to any products herein to improve reliability, function or design. fairchild does not assume any liability arising out of the application or use of any product or circuit described here- in; neither does it convey any license under its patent rights, nor the rights of others. life support policy fairchild?s products are not authorized for use as critical components in life support devices or systems without the express written approval of the president of fairchild semiconductor corporation. as used herein: 1. life support devices or systems are devices or systems which, (a) are intended for surgical implant into the body,or (b) support or sustain life, and (c) whose failure to perform when properly used in accordance with instructions for use provided in labeling, can be reasonably expected to result in a significant injury of the user. 2. a critical component in any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness. www.fairchildsemi.com 4 of 4 6/05/01 ds300312 gaas infrared emitting diode led55b led55c led56
product folder - fairchild p/n led55c - gaas infrared emitting diode fairchild semiconductor space space space search | parametric | cross reference | inventory space product folders and datasheets application notes space space space find products home >> find products >> space space space space products groups space analog and mixed signal discrete interface logic microcontrollers non-volatile memory optoelectronics markets and applications new products product selection and parametric search cross-reference search technical information buy products technical support my fairchild company led55c gaas infrared emitting diode related links request samples dotted line how to order products dotted line product change notices (pcns) dotted line support dotted line distributor and field sales representatives dotted line quality and reliability dotted line design tools contents general description | features | testing conditions | product status/pricing/packaging general description the led55b/led55c and led56 are 940 nm leds in a narrow angle, to-46 package. back to top features l good optical to mechanical alignment l mechanically and wavelength matched to the to-18 series phototransistor l hermetically sealed package l high irradiance level back to top space datasheet download this datasheet pdf e-mail this datasheet [e- mail] this page print version testing conditions l p 0 @ i f = 100 ma back to top product status/pricing/packaging product product status pricing* inventory check & ordering package type packing method LED55CB full production n/a purchase to-46 bulk led55c full production $0.91 purchase to-46 bulk file:///d|/fair/pdf/led55c.html (1 of 2) [10/4/02 11:04:13 am]
product folder - fairchild p/n led55c - gaas infrared emitting diode * fairchild 1,000 piece budgetary pricing back to top space space home | find products | technical information | buy products | support | company | contact us | site index | privacy policy ? copyright 2002 fairchild semiconductor space space file:///d|/fair/pdf/led55c.html (2 of 2) [10/4/02 11:04:13 am]
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