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S&B Tech

Already buying magnetics? Send us the part number.

We check it against the line and come back within 48 hours with an equivalent or a build proposal, priced at your volume on a two weeks lead time.

A part number is enough to start

We check it against the line, and where nothing is a drop-in we quote the same specification wound to order. That is how most cross-references end here: the factory builds to order rather than stocking substitutes, so the equivalent is made to match your part instead of being the nearest thing on a shelf.

What to send
The manufacturer's part number, your annual volume, and the datasheet if you have it to hand.
What comes back, within 48 hours
A part from the line or a build proposal, pricing at your volume, and a two weeks lead time.

Attaching the incumbent datasheet turns section 3 from homework into detail we read off the drawing — leave those fields blank if that is easier.

1. Contact information

2. Project details

What the part is for and how many you need. A best guess on volume is more useful to us than a blank.

Optional. It only tells us whether we can improve on it — it is not shared outside S&B Tech.

This decides which technical fields appear in section 3. Pick the closest match if you are between two.

Filled in for you if you arrived from a part page. Leave it blank if you are starting from a specification rather than a part number.

Approvals or standards requiredoptional

Worth telling us now — an approval added after the design is fixed can mean a different core or a different insulation system.

3. Technical specifications

Which parameters appear here depends on the product family selected above.

Technical fields are optional — submit what you know.

Mains transformers and adapters

4. Files and notes

Technical fields are optional — submit what you know.

PDF, PNG, JPG, JPEG, DWG, DXF, STEP, STP. Up to 4.0 MB per file, 4.5 MB in total.

One good drawing usually answers more of section 3 than the fields do. Send the PDF and leave the rest to us.

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