Depending on the complexity of the transformer not in stock, it's usually a 2-4 week ship time for wound-to-order builds.
• For our more common designs, we probably already have it in our production schedule, and if we complete your order sooner than that we'll ship it as soon as it's done.
• For more complex builds (high interleaving, custom hardware, etc..) or designs we don't produce often, we strive to ship everything within a 4 week timeframe. If you have a strict deadline for you project let us know and we'll do our best to accomodate.