LM741H Op-Amp by National Semiconductor. Package: TO-5-8 (TO-99) can with 8-gold plated leads military grade device with an extended heat range of -55 to 125°C Download Texas Instruments (revised National Semiconductor) LM741H .pdf datasheet: favoured package for those building scientific instruments or into analogue musical instruments. Status : NOS (New Old Stock) RoHS compliant : no