purdy electronics corporation ? 720 palomar avenue ? sunnyvale, ca 94085 tel: 408.523.8200 ? fax: 408.733.1287 ? sales@purdyelectronics.com ? www.purdyelectronics.com 11/11/09 and156syp ultra bright led lamps package dimensions unit: mm and156syp as aiga in p super yellow light emission t-1 3/4 package (5 mm) features ? high efficiency ? absorbing substrate aluminum gallium phosphide ? viewing angle: 30 degrees ? all plastic mold type, clear colorless lens ? low power consumption ? esd-withstand voltage: up to 2kv ? pb free ? applications: outdoor displays, status indicators, backlighting, and commercial use maximum ratings (t a = 25c) characteristics symbol rating unit continuous forward current i f 50 ma peak forward current (pulse width < 100 s, duty cycle <1%) ifp 100 ma operating temperature t opr -40 ~ + 85 c storage temperature t stg -40 ~ +100 c soldering temperature (time < 5 seconds) t sol 260 c power dissipation p d 115 mw zener reverse current i z 100 ma electrostatic discharge esd 4000 v electro-optical characteristics (t a = 25c) characteristics symbol test condition minimum typical maximum unit forward voltage v f i f = 20 ma C2 . 02 . 6 v zener reverse voltage v z i z = 5 ma CC3 . 0v luminous intensity i v i f = 20 ma 4500 6200 7150 mcd peak emission wavelength p i f = 20 ma C 591 C nm dominant wavelength d i f = 20 ma C 589 C nm spectrum radiation bandwidth ? i f = 20 ma C1 5Cn m full viewing angle 2 1/2 i f = 20 ma C 30 C degree product speci?cations contained herein may be changed without prior notice. it is therefore advisable to contact purdy electronics before proceeding with the design of equipment incorporating this produc t.
and156syp as a lgain p super yellow light emission ultra bright led lamps purdy electronics corporation ? 720 palomar avenue ? sunnyvale, ca 94085 tel: 408.523.8200 ? fax: 408.733.1287 ? sales@purdyelectronics.com ? www.purdyelectronics.com 11/11/09 radiation characteristics 0 10 20 30 40 50 60 70 80 90 00 . 5 relative intensity vs. wavelength 500 550 600 650 700 0.2 0.4 0.6 0.8 1.0 wavelength (nm) relative intensity forward current vs. forward voltage 1.0 1.5 2.0 2.5 3.0 3.5 10 20 30 40 50 forward voltage (v) forward current (ma) forward current vs. relative intensity 0 10 20 30 40 50 0.5 1.0 1.5 2.0 2.5 forward current (ma) relative luminous intensity (%) forward current vs. ambient temp. 0 20 40 60 80 100 10 20 30 40 50 relative intensity relative intensity vs. ambient temp. 25 35 45 55 65 0.0 0.5 1.0 1.5 2.0 ambient temperature ta (oc) relative luminous intensity (%) 0.0 30 40 50 60 70 radiation angle 1.0 0 0.5 1.0 forward current (ma) ambient temperature ta (oc) 0 0 0.0 when the leds are connected using serial circuit, if either one of the leds does not light up, then current will not flow causing the other leds to not light up. in the new design, the leds are in parallel with the zener diodes. if either one of the leds does not light up, current can still flow through causing the others to light up.
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