Octal sample-and-hold in a hermetic cavity
The SMP08FQ is an octal sample-and-hold amplifier from Analog Devices, designed for precision data-acquisition front ends where multiple analog channels must be simultaneously sampled and held for conversion. Each of the eight channels captures and stores an analog voltage on an external hold capacitor, allowing a single ADC to sequentially digitise the held values without skew between channels. The through-hole mounting suits legacy board layouts, prototyping, and applications where mechanical robustness of the solder joint matters more than board density.
RoHS status — a BOM flag to resolve early
However, it is marked RoHS non-compliant, which means the device contains lead in the solder-dip terminations or die-attach. For designs that must meet EU RoHS or similar regulations, this part requires an exemption or a waiver; for defence, aerospace, or high-reliability programs that are explicitly exempt from RoHS, it is a straightforward fit.
Package and thermal handling note
The 16-CERDIP package has a different coefficient of thermal expansion from FR4 — board designers should allow for lead-strain relief and avoid rigid conformal coatings that could stress the glass-to-metal seals. The ceramic body also means the part is MSL 1 (no moisture sensitivity), so no bake-out is needed before reflow or hand-soldering, but the through-hole leads require a wave or selective-solder process rather than reflow.