Package and mounting
The Renesas CA3140EZ is a single-channel general-purpose op-amp in an 8-pin DIP through-hole package. Its 4.5 MHz gain-bandwidth product and 9 V/µs slew rate cover audio-band filtering, signal conditioning, and moderate-speed control loops. Supply range spans 4 V to 36 V single or dual supply.
-55 to 125°C — military-grade temperature range
The 4 mA typical supply current stays consistent across the range, so the thermal budget in a sealed module is predictable.
8-DIP package — prototyping and repair staple
Housed in an 8-DIP (0.300", 7.62mm) through-hole package, the CA3140EZ is a rework-lab and breadboard favorite. No hot-air station needed — a standard soldering iron and a DIP socket get it onto a prototype board or back into a legacy PCB. The 40 mA output per channel can drive a small relay coil or a headphone amplifier directly, though thermal derating applies at the high end of the temperature range.