Custom & OEM power supply manufacturer

A US company you buy from
One accountable contact
Own factories · China + Vietnam
Origin documented per unit

Build to your spec

HTS 8504.40.85

OutputAny voltage to your drawing — 3 to 250 W · single or multi-rail · fixed, PD, or programmed

EnclosureWall-mount or desktop enclosure to your mechanical drawing

Also builtClass 2 linear transformers to UL 1310 — see the linear transformer page

EfficiencyDoE Level VI four-point average, computed for your nameplate wattage

Production testHi-pot 3.0 kV AC, 3 s, 100% of units · insulation > 50 MΩ at 500 V DC

ImmunityIEC 61000-4-2 through 4-11 to your levels and performance criterion

CertificationUL / cUL 62368-1 · FCC · CE / UKCA standard · DoE VI · medical IEC 60601, PSE / KC / CCC / BIS and other regional marks on request

Private labelYour brand on the housing, your artwork on the carton; tooling quoted before commitment

OriginVietnam or China — your election, documented per unit

The figures above are typical of builds we have shipped, not a limit. Output voltage and wattage, connector, plug standard, protection trip points, cable, housing and agency marks are all set per order — send a target spec and we will quote against it.

Discuss your spec

Where custom & oem power supplies are used

OEM device power (in-box or embedded)
Medical (IEC 60601) and industrial
Networking, IoT, and instrumentation
Replacement and cross-reference builds

How we build them

Bring a drawing or a target spec — voltage, connector, enclosure, efficiency, certification — and we build it under the same UL 62368-1 file and DoE Level VI test as our standard SKUs. Any output voltage to 250 W, single or multi-rail, fixed, PD, or programmed; switching or AC-AC linear to UL 1310; desktop or wall-mount enclosures; medical IEC 60601 on request. A first-article sample is approved before any run.

Custom power supply sourcing guide →

How we test them — IQC to OQC →

The marks every build carries.

Product certifications on the label, the packaging, and the documentation your procurement team audits against — verifiable by file number on request.

cULus LISTED

cRUus REC.

cETLus

FCC PART 15

RoHS

REACH

Manufacturing operates under ISO 9001:2015 · ISO 14001:2015 ·ISO/IEC 27001:2022 · TL 9000-H · QC 080000 HSPM · ESD S20.20 ·Amfori BSCI

See how we source

Custom & OEM power supplies — common questions

Can you build a power supply to our drawing?

Yes. Custom and OEM switching power supplies up to 140 W — single or multi-rail, fixed, PD, or programmed output — to your voltage, connector, and enclosure, under the same UL file and DoE Level VI testing as our standard lines.

What do you need to start a custom build?

A target spec or a drawing: output voltage and current, connector, enclosure (wall or desktop), certifications, and destination. From that we quote tooling, samples, MOQ, lead time, and price before you commit.

Do you handle medical or industrial power supplies?

Yes. Medical IEC 60601 and regional overlays (PSE, KC, BIS) on request, tested per unit to the standard your market requires.

Do custom builds carry the same certifications as your standard lines?

Yes — they are built under the same UL 62368-1 file and DoE Level VI efficiency testing, with private-label branding on the housing and carton.

What is the minimum order quantity and lead time?

Both depend on the build and how much is customized, including tooling. Send your spec and target volume and we quote MOQ, lead time, and price together.

Related products

Desktop power adaptersEnclosed, any voltage, to 250 W Wall-mount power adaptersInterchangeable AC blades, 5–65 W USB-C power adaptersUSB PD 3.0 / 3.1 fixed-output GaN chargers30–140 W, 1–4 ports, PD 3.1 EPR

Request a quote

Send the spec or drawing, target volume, certification, and destination — five lines get you a real quote for custom & oem power supplies.