Adding an information icon to a form element
You can use '#prefix' =&gt; 'Some title &lt;img src="/some/image/source"&gt;' instead of '#title' =&gt; t('Name') 

$component[$this-&gt;componentName] =  array(
                  '#prefix' =&gt; t('Some title*') .' &lt;img src="/some/image/source"&gt;',
                  '#type' =&gt; 'textfield',
                  '#size' =&gt; 30,
                  '#maxlength' =&gt; 45,
                  '#default_value' =&gt; $item-&gt;Name,
                  '#attributes' =&gt; array(

                  );


You can add any markup to '#prefix' element of this array.

Or you can add markup even directly to title '#title' =&gt; t('Some title*') .'&lt;img src="/sdfsf"&gt;', but i think there can be some issues with asterisk when a field is required.