Contextual Info: HI TAC HI/ OPTOELECTRONICS S^E D MM T b SG S D0120L42 HL7838G •HIT4 GaAIAs LD Description The HL7838G is a 0.78 pm band GaAIAs laser diode with a double heterojunction structure and is appro­ priate as the light source for various optical application devices, including laser beam printers and laser