Custom Encapsulated & PCB-Mount Transformers
Encapsulated transformers seal the magnetics against moisture, dust and vibration for harsh environments and safety-critical isolation. P&A International engineers, prototypes and delivers custom encapsulated and PCB-mount transformers — potted, sealed and board-level — a few VA to several hundred VA, 50/60 Hz, built to your voltages, footprint and safety class.
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 encapsulated transformers
Sealed & protected
Potted construction resists moisture, dust, chemicals and vibration for harsh and outdoor environments.
Safe isolation
Reinforced or double-insulated to IEC 61558 / EN 61558, CE and UL for safety-critical designs.
Board-level fit
PCB-mount and chassis footprints designed to your layout, pin-out and height.
Built to your spec
Custom voltages, taps and outputs, DFM-reviewed for cost and manufacturability.
Engineering capability
- Magnetic design & simulation — turns ratio, regulation, temperature rise
- Potting compound & case selection for thermal, environmental and safety class
- Reinforced / double-insulated construction; creepage and clearance to IEC 61558
- PCB-mount pin-out and chassis footprints to your layout
- Multi-output and tapped designs; electrostatic screens
- 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 | Encapsulated / potted / PCB-mount |
| Power | A few VA – several hundred VA |
| Frequency | 50 / 60 Hz line frequency |
| Windings | Single & multi-output, taps, screens |
| Isolation | Reinforced / double-insulated to IEC 61558; CE / UL |
| Protection | Sealed against moisture, dust & vibration |
| 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 encapsulated transformers optimised for thermal performance, safety class and board fit. We design to your footprint and environment — 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
Building services & HVAC · lighting and LED drivers · industrial & outdoor equipment · safety-critical and medical isolation · door-entry & security · pumps and controls.
Explore related types: low-frequency & power transformers, EI laminated and toroidal transformers.
Choosing the right encapsulated transformer
A few decisions shape every encapsulated design — sharing this detail lets us quote and prototype faster:
| Environment | Operating temperature, humidity, ingress and chemical exposure set the potting compound and case. |
| Isolation class | Reinforced or double-insulated construction and creepage/clearance to IEC 61558 / EN 61558 for the safety class you need. |
| Footprint & pin-out | PCB layout, pin spacing, height and chassis mounting designed to your board and enclosure. |
| Voltage & rating | Primary/secondary voltages, taps, outputs and VA rating set the core and copper. |
| Thermal | Potting and case are selected so the sealed part stays inside its temperature class under load. |
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:
- Primary and secondary voltages, VA rating and number of outputs
- Operating environment (temperature, humidity, ingress)
- Isolation / safety class and target standards
- PCB footprint, pin-out and height, or chassis mounting
- Mechanical envelope and any thermal limits
- 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 encapsulated transformer RFQ checklist & selection quick reference (PDF)
Get a quote
Send your voltages, footprint, environment and spec sheet 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