Custom Inductors & Chokes
Inductors and chokes store energy, smooth current and suppress EMI across power and data lines. P&A International engineers, prototypes and delivers custom power inductors, common-mode chokes, filter chokes and SMD inductors — litz, flat-wire and multi-layer constructions — built to your inductance, current and saturation requirement.
As an engineering-led contract manufacturer founded as an engineering consultancy, we assign one dedicated engineer to your project from design review to qualified samples in 10–15 working days, then scale into volume through our vetted partner-factory network, where every supplier is ISO 9000 certified or better.Request a quote ›
consultancy + manufacture
per project, end-to-end
qualified samples with test data
every supplier certified or better
one-off to high volume
Why choose PA inductors & chokes
High current, low loss
Litz and flat-wire windings and the right core give high saturation current and low AC resistance.
EMI suppression
Common-mode and differential chokes designed for the insertion loss and frequency band you need.
Stable inductance
Core grade and gap chosen for stable inductance versus current, temperature and frequency.
Any format
Power, filter, flat-wire high-current and SMD inductors, through-hole or surface-mount.
Engineering capability
- Magnetic design & simulation — inductance, saturation, DCR, AC resistance, core loss
- Core grade and gap selection for stable L vs current and temperature
- Litz, foil, flat-wire and multi-layer winding for low AC resistance
- Common-mode and differential chokes for EMI/EMC suppression
- Power, filter, output, PFC and SMD inductor designs
- DFM review to hit target cost while preserving performance
- Qualified samples with full test data before any volume tooling
- One dedicated engineer owns the project end-to-end
At a glance
| Type | Power / filter / PFC / common-mode / SMD inductors |
| Construction | Litz, foil, flat-wire, multi-layer |
| Inductance | Specified to your L, current & ripple |
| Current | To your rated & saturation current |
| Mounting | Through-hole, SMD, chassis |
| Frequency | Line-frequency filtering to high-frequency power |
| Prototype | 10–15 working days to qualified samples |
| Quality | Every supplier in our network is ISO 9000 certified or better |
Why engineers & buyers choose PA
For design engineers
A true design partner — one dedicated engineer, full simulation and DFM support, rapid samples, and inductors and chokes optimised for saturation, DCR, AC resistance and EMI. We design to your inductance, current and frequency — not just catalogue parts.
For purchasing
Low-risk scalability — predictable 10–15-day prototypes, flexible MOQ from one-off to production, target-cost DFM, a single point of contact, and a vetted ISO 9000+ partner network managed end-to-end by P&A. No hand-offs, no surprises.
3 easy steps to get started
Send us your spec
Send your drawing or spec sheet. One dedicated engineer reviews it and confirms the technical details with you.
Proposed design & quote
You receive a proposed design and indicative pricing — typically within 48 hours — to review and refine together.
Samples & production
Qualified samples with full test data in 10–15 working days; on approval we scale into volume through our partner network.
Applications
SMPS output & filter · PFC and boost · EMI/EMC input filters · motor drives and inverters · renewable and energy storage · audio and RF.
Explore related types: high-frequency & switch-mode magnetics, SMPS and planar transformers.
Choosing the right inductor or choke
A few decisions shape every inductor design — sharing this detail lets us quote and prototype faster:
| Function | Power/output storage, PFC, EMI common-mode or differential filtering – the function sets core, winding and topology. |
| Inductance & current | Required inductance, rated and peak/saturation current and ripple set the core size, gap and wire. |
| AC resistance | At high frequency, litz, foil or flat-wire winding cuts AC/proximity loss for efficiency and temperature rise. |
| Core & stability | Powder, ferrite or gapped cores are chosen for stable inductance versus current and temperature. |
| Format | Through-hole, SMD, flat-wire high-current or chassis, with the footprint and height you need. |
What to send us for a fast, accurate quote
The more of this you can share, the quicker we can return a proposed design and price:
- Inductance, tolerance and rated / saturation current
- Function (power, PFC, output, common-mode, differential)
- Ripple current, frequency and DCR / AC-resistance targets
- Mounting (through-hole / SMD / chassis) and footprint/height
- Temperature rise and EMI requirements
- Target cost and annual volume or call-off pattern
- Any reference design, competitor part number or physical sample
Working from a competitor part or a sample is fine — our engineer will reverse-engineer it or design a drop-in equivalent to your specification.
📄 Download the inductor & choke RFQ checklist & selection quick reference (PDF)
Get a quote
Send your inductance, current, frequency and footprint and one dedicated engineer will reply — typically within 48 hours — with a proposed design and indicative pricing.
One dedicated engineer reviews every enquiry and replies with a proposed design and indicative pricing. Your details are used only to respond to your enquiry. Prefer email? support@pa-international.com.au