As many have said these LED replacement bulbs are not as bright as the original 20w bulbs. But who will replace the light bulb at this age? Not me. I got two LED bulbs for less than most standard replacement parts. I've safely glued the second one in the oven in case it's needed in the future. The review asks me to rate "easy installation" but to be honest this is Panasonic's problem, not the lamp manufacturer. I checked the reviews before buying, many people complain that they need a torx protector to get the lid off the microwave. I felt that removing the cover to replace a user-serviceable item like a lightbulb was poor design, and why doesn't the base just have a single-socket (screwed in) lightbulb like everything else? Again, Panasonic is to blame, not the lamp manufacturers. It wasn't a problem for me as I fix things all day and have all the security features I will ever need. But to be honest it's three stars. The only physical difference between this replacement bulb is that both quick connects are the same size, 3/16 inch (.187 inch), while the original bulb was .187 inch. and .250" for terminals (see image for comparison), but a larger female terminal works well with a smaller ferrule. (Really, Panasonic, why do something stupid like that? It's not polarity sensitive and they both pass the same amount of current!). This replacement worked great If anyone is wondering I have the model NN-SN778S but this lamp fits multiple models Overall it works and works quite well.
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