Panasonic AN22117A Integrated Circuit

This is a Panasonic AN22117A surface-mount integrated circuit (IC) soldered onto a multi-layer green printed circuit board (PCB). The chip is housed in a square, black plastic Low-profile Quad Flat Package (LQFP) with high pin-density Gull-wing leads on all four sides. The laser-etched markings on the top surface include the manufacturer name 'Panasonic', the primary part number 'AN22117A', and a secondary production/lot code '721P2256'. A small circular indentation (pin 1 marker) is visible in the bottom-left corner of the chip's body. The surrounding circuitry features various surface-mount devices (SMD), including ceramic capacitors and resistors (notably labeled R105, R106, P104, and C111-C115). The soldering is clean and reflective, indicating modern automated manufacturing techniques. The board appears to be in good functional condition with no visible signs of thermal stress, corrosion, or physical fractures. The presence of 'STM OUT' labeling suggests this IC may be part of a signal processing or control subsystem in a consumer electronic device, likely manufactured in the early-to-mid 2000s based on the component style and marking format.

I have carefully examined the Panasonic AN22117A integrated circuit as presented on its host printed circuit board. Based on the laser-etched markings and the clean soldering of the LQFP package, the component appears to be an authentic Panasonic semiconductor. The physical condition is excellent, showing no signs of charring, ESD damage, or 'popcorning' frequently associated with improper storage or thermal stress. As an appraiser, I note that while the individual IC typically retails for $4.00 to $7.00 as a 'New Old Stock' (NOS) component, its value is tied strictly to its utility as a replacement part for specific consumer electronics. Because it is already soldered to a PCB, its value is effectively that of a salvaged part unless the entire sub-assembly is being sought for a specific repair. The market for mid-2000s signal processing chips is saturated with surplus, and rarity is low. Factors that would increase value include original manufacturer reels or anti-static packaging. Limitations of this digital inspection include the inability to perform a continuity test or verify internal die integrity; full authentication would require high-resolution X-ray inspection to ensure no internal wire-bond fatigue exists and a functional test in its designed circuit. This valuation represents the fair market price for a single salvaged unit provided to a technician requiring this exact specification.