What this part is and where it fits
The Maxim Integrated MAX4036EXK+T is a single-channel general-purpose op-amp in a 5-pin SC-70-5 package. Its headline numbers are a 4 kHz gain-bandwidth product and a 900 nA supply current, with rail-to-rail output swing across a 1.4 V to 3.6 V supply range. This combination targets battery-powered sensor interfaces, portable instrumentation, and always-on signal conditioning where every microamp of quiescent current matters. The 0.004 V/µs slew rate and 4 kHz GBW mean this part is built for DC and near-DC signals — think thermistor bridges, photodiode amplifiers, and battery voltage monitors — not audio or high-speed loops.
What the ratings mean for your BOM
The 900 nA supply current is the spec that decides the fit. The 1.4 V minimum supply lets it run directly from a single alkaline cell down to end-of-life voltage.
Package and rework
The SC-70-5 package (also known as SOT-353) is a 5-lead surface-mount case. It reflows well with a standard hot-air station.
Sourcing and lifecycle
The MAX4036EXK+T carries an Active product status with ROHS3 compliance. For a BOM line that needs a micropower op-amp in SC-70-5, this part is a current-production choice with no near-term obsolescence risk.