Dual general-purpose op-amp in a TO-99 can
The LM158AH is a dual general-purpose operational amplifier from Texas Instruments, housed in a TO-99-8 metal can package for through-hole mounting. The 1 MHz gain-bandwidth product and 2 mV typical input offset suit it for signal conditioning, transducer amplification, and DC-blocking stages in harsh-environment or high-reliability systems.
Military temperature range — the main event
The TO-99 hermetic metal can seals the die against moisture and contamination — a requirement for long-life mission profiles where conformal coating alone isn't enough.
For BOM lines that specify this exact order code, the supply channel is stable.
Package and mounting — retrofit fit check
The TO-99-8 metal can is a through-hole package with 8 leads. It mates with standard 8-pin round sockets or can be soldered directly into plated through-holes.