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powershell - How to get hash table key which has specific value?

I am having a hash table where Keys are being used based on value.

For ex.

    $ComponentTobeBuild=@{"ComponentNameX"="True";
                          "ComponentNameXyz"="False";
                          "SomeComponent"="False"}

I would like to get the keys which are having values True. (I will pass the key to some other script as parameter).

I was trying like that , But i think some where i am missing as it is not listing the keys.

$($ComponentToBuild.Keys) | Where-Object { $_.Value -eq "True" }

How to get the component Name which are having denoted as True? Also i would like to know whether hash table is a wise choice for this kind of work. Because I thought that Hash table will be mainly be used for processing the values.

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$ComponentTobeBuild.GetEnumerator() | ? { $_.Value -eq "True" }

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