TBA221B Integrated Circuit Op-Amp - CASE: DIP8 MAKE: SIEMENS

M5218P Integrated Circuit Op-Amp - CASE: DIP8 MAKE: Mitsubishi

AN1358 Integrated Circuit Op-Amp - CASE: DIP8 MAKE: Panasonic

UPC4570C NEC INTEGRATED CIRCUIT OPAMP DIP-8

BA6220 Integrated Circuit - CASE: DIP8 MAKE: ROHM

UPC4570C Integrated Circuit Op-Amp - CASE: DIP8 MAKE: NEC

BA15218 Integrated Circuit Op-Amp - CASE: DIP8 MAKE: Rohm Semiconductor

SFC2748DC Integrated Circuit Op-Amp - CASE: DIP8 MAKE: STMicroelectronics