Custom LAN & Signal Transformers
LAN and signal transformers provide the isolation, common-mode rejection and signal integrity that Ethernet, PoE and data links depend on. P&A International engineers, prototypes and delivers custom LAN and signal transformers — 10/100/1000 Mbps and multi-gig, single and multi-port, discrete and integrated-magnetics modules — built to your PHY, data rate and footprint.
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 LAN & signal transformers
Signal integrity
Tight turns-ratio, low insertion loss and good return loss for clean 10/100/1000 and multi-gig links.
Common-mode rejection
Integrated common-mode chokes and balanced winding reject noise on power and data lines.
Reinforced isolation
IEEE 802.3 isolation with reinforced construction to IEC 62368-1 / UL as specified.
To your PHY & footprint
Matched to your PHY and connector, in discrete, module or RJ45-magnetics formats.
Engineering capability
- Magnetic design & simulation — turns ratio, insertion / return loss, CMRR, crosstalk
- Core and winding selection for data rate and signal integrity
- Integrated common-mode chokes and autotransformer sections
- Reinforced isolation to IEEE 802.3 / IEC 62368-1; hi-pot to your spec
- Single and multi-port, discrete, SMD module or RJ45-magnetics formats
- 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 | LAN / Ethernet / signal & pulse transformers |
| Data rate | 10 / 100 / 1000 Mbps & multi-gig |
| Ports | Single & multi-port |
| Format | Discrete, SMD module, RJ45-magnetics |
| Isolation | Reinforced to IEEE 802.3 / IEC 62368-1; hi-pot to spec |
| Features | Integrated common-mode chokes |
| 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 LAN/signal transformers designed for insertion/return loss, CMRR and isolation matched to your PHY. We design to your data rate and footprint — 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
Ethernet & industrial networking · PoE / PoE+ equipment · routers, switches & gateways · IP cameras and IoT · telecom and data infrastructure · automotive and industrial Ethernet.
Explore related types: high-frequency & switch-mode magnetics, common-mode chokes & inductors and current transformers.
Choosing the right LAN / signal transformer
A few decisions shape every LAN/signal design — sharing this detail lets us quote and prototype faster:
| Data rate & PHY | 10/100/1000 or multi-gig and your specific PHY set the turns ratio, inductance and return-loss target. |
| Common-mode rejection | Integrated common-mode chokes and balanced winding reject noise; the level needed sets the design. |
| Isolation & hi-pot | IEEE 802.3 isolation, reinforced construction to IEC 62368-1 and your hi-pot voltage designed in. |
| Ports & format | Single or multi-port, discrete, SMD module or RJ45-with-magnetics to suit your board and connector. |
| PoE | PoE / PoE+ current handling and saturation are designed into the magnetics where required. |
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:
- Data rate (10/100/1000 / multi-gig) and target PHY
- Single or multi-port and format (discrete / module / RJ45)
- Required insertion loss, return loss and CMRR
- Isolation / hi-pot voltage and PoE class if applicable
- Footprint, pin-out and connector
- Target cost and annual volume or call-off pattern
- Any reference design, competitor part number or datasheet
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 LAN / signal transformer RFQ checklist & selection quick reference (PDF)
Get a quote
Send your data rate, PHY, format 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