EV charger focus
Materials aligned to charger power stages — module interfaces, control boards, enclosure sealing and magnetics.
High-conductivity thermal pads and electrical insulation for AC and DC EV chargers — 3 to 6 W/m·K silicone pads for IGBT, MOSFET and SiC power modules, flame-retardant sealing foam for the enclosure, and aramid magnetics insulation, die-cut to your drawing for OEM production.
An EV charger is thermally closer to industrial power conversion than to consumer electronics, because the defining condition is duration. A charger runs near its rated output for the length of a charging session, so the design case is sustained steady-state dissipation, not a short peak the enclosure can absorb. The losses land in the PFC stage, the IGBT or SiC switching modules, and the magnetics — and they keep landing there for as long as the vehicle stays connected.
Outdoor and wall-box units then remove the easiest cooling option. To keep water and dust out they are sealed, so there is no through-airflow and effectively all heat leaves by conduction into the casting or heatsink. That puts unusual weight on the interface layer, since it is in series with every watt on its way out — a pad that bridges the gap badly raises module temperature for the whole session, every session.
Magnetics bring a second, separate requirement: winding and layer insulation rated for the temperature class the transformer actually reaches. That is a paper and film problem rather than a thermal pad one, and we supply aramid paper die-cut to the bobbin or core geometry alongside the pads. We supply EV charger thermal pads and magnetics insulation converted and die-cut to your drawings for OEM production.
Every watt the power stage loses has to travel the same road. The module temperature is whatever the ambient air is, plus the sum of every thermal resistance along that road.
Every watt lost in the PFC stage, the switching modules and the magnetics has to reach ambient air through the same chain: out of the module baseplate, across the interface, into the heatsink or sealed casting, and away. In an outdoor or wall-box unit the enclosure is sealed against water and dust, so there is no through-airflow to help — conduction is the whole story.
That makes the interface pad a genuine design component rather than an assembly afterthought. Its thermal resistance sits in series with everything else in the path, and at 6 W/m·K the pad's share of the total budget stays small even as module power climbs. Specify it against the measured case temperature and the real gap, not the headline number.
Both silicone grades are supplied as sheet with or without adhesive backing, and every part on this page can be die-cut to your drawing. Technical datasheets are linked per grade.
| Grade | Conductivity | Dielectric strength | Thickness options | Adhesive | Datasheet |
|---|---|---|---|---|---|
| CP600 | 6.0 W/m·K | 6.0 kV/mm | 0.5 / 1 / 2 / 3 mm | Adhesive or plain | TDS |
| CP300 | 3.0 W/m·K | 6.0 kV/mm | 0.5 / 1 / 2 / 3 mm | Adhesive or plain | TDS |
| Part | Material | Key specifications | Thickness | Datasheet |
|---|---|---|---|---|
| MCF-PU | Micro-cellular PU foam | UL94 HF-1 / HBF · −40 °C to +100 °C · ≥50 % set recovery | 0.5 / 1 / 2 / 3 / 5 mm + custom | — |
| NOMEX-CUST | Aramid insulation paper | Class H · die-cut to bobbin or core geometry | To drawing | Datasheet |
MOQ 10 sheets · typically dispatched in 7 days.
Grades most often specified for EV charger assemblies, drawn from the live catalogue.
Materials aligned to charger power stages — module interfaces, control boards, enclosure sealing and magnetics.
Electrically insulating silicone pads and aramid papers for live module tabs and Class H magnetics.
Custom die-cut parts for enclosures, module stack-ups and gasket profiles, quoted to your drawing.
Supply terms. Standard sheet grades start at 10 sheets; die-cut TO-package shapes start at 50 pieces. Catalogue grades are typically dispatched within 7 days. Parts to a new drawing are quoted per job — send a DXF or PDF with the grade and thickness, and note that die cost is one-time, so the per-part price falls sharply with volume. Adhesive and non-adhesive options are available across the silicone grades. ISO 9001:2015, supplied to OEMs and contract manufacturers across India from Bengaluru.
CP600 (6.0 W/m·K) and CP300 (3.0 W/m·K) silicone pads, both rated 6.0 kV/mm dielectric strength, in 0.5, 1, 2 and 3 mm, with or without adhesive backing.
Aramid insulation paper, Class H, die-cut to your bobbin or core geometry. The full range is in the insulation paper catalogue.
MCF-PU micro-cellular PU foam, rated UL94 HF-1 / HBF, −40 °C to +100 °C, with at least 50 % set recovery, in 0.5 to 5 mm and custom thicknesses.
Yes. Send a DXF or PDF with the grade and thickness for each part. Several parts for the same enclosure can be quoted together.
Standard sheet grades start at 10 sheets and die-cut TO-package shapes at 50 pieces. Catalogue grades are typically dispatched within 7 days. Parts to a new drawing are quoted per job; die cost is one-time.
Send your specification — grade, thickness, size or die-cut drawing, and quantity — and our team will quote to your requirement.