Chris, you knew this post was coming... 
(delayed a week assisting my boss who had to fly over to your side of the planet, to assisting him debug EMI-related IrDA issues at one of our test sites - just when I thought I'd have my most productive week ever with him gone... not so much
)
so I need a common-mode choke, 85-265Vac rated, <1.0Amps operational current, but UL/CSA/VDE/whateverthefluff rated, Because Standards (which have not been formally stated requirements for the product at this stage, but we know it'll come down the track).
so I can see @ DK there's all sorts. my height restriction is about 27-28mm, but there's plenty of options, some half that height, at various PCB footprints. but unfortunately DK doesn't give agency ratings as a searchable criteria sigh
hope over here. um, where do I start? tried transformers, 1:1 ratio, saw a delicious-looking Approvals search criteria, but clearly I wasn't in the right place. did a search for a part# that was on my maybe-short list, just to get an idea where CM-chokes were categorised here - ah! inductors! duh!
so, Inductors > Fixed Inductors > Inductor Type: CM Choke; while furiously ignoring the criteria "Connector Type" that was left with "Card Edge Connector" as the only available type, & same with "Resistor Type: Fixed Resistor" -weird! But then 'Package Height' ranged only from 0.3 to 10.0mm, hmmm, something wrong here...
Undeterred, I tick 'filter choke' & 'common mode choke' in the 'Inductor Application' criteria (the kind of thing I'd never dream of ticking, it sounds like the list of 'Applications' on the front page of a datasheet - oh damn, they don't have my application listed, so I can't use this part?? you know the joke...
but the result of narrowing my search by ticking these two 'Applications' left me with results whose Package Height now ranged from 31.2 to 35.6mm, up from 0.3 to 10.0mm blank stare blink blank stare please, don't even try to make a Venn Diagram of this situation, you'll do yourself an injury.
so, The Truth Is In There, somewhere, but seemingly not searchable in a manner that makes sense to me 