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Planar Cores

Standard low-profile planar ferrite cores, listed small to large. We build with cores from Nicera®, Ferroxcube®, TDK®/EPCOS® and TDG® — all interchangeable standard form factors.

Nicera®Nippon Ceramic Co. (Japan) — low-loss ferrite (NC-2H, NC-1L, NC-4Y); standard E / ER / EQ / PQ planar shapes.
Ferroxcube®Planar E cores E14→E64 with matching PLT plates; power materials 3F3, 3F4, 3C85.
TDK® / EPCOS®ELP 14→102 (rectangular post), ER 9.5→32 and EQ 13→30 (round post); PC200 up to 4 MHz.
TDG®Zhejiang TDG Holding (China) — one of the world's largest soft-ferrite makers; compatible standard planar shapes.
Core Dimensions A × B × C (mm) Ferroxcube® TDK® / EPCOS® TDG® Drawing
ER 9.59.5 × 2.5 × 5—✓✓PDF
ER 1111 × 2.5 × 6—✓✓PDF
EQ 1312.8 × 2.85 × 8.7—✓✓PDF
E 14 / ELP 1414 × 3.5 × 5✓✓✓PDF
ER 14.514.5 × 3 × 6.7—✓✓PDF
E 18 / ELP 1818 × 4 × 10✓✓✓PDF
ER 1818 × 3 × 10—✓✓PDF
EQ 2020 × 6.3 × 14—✓✓PDF
E 22 / ELP 2221.8 × 5.7 × 15.8✓✓✓PDF
ER 2323 × 5 × 13—✓✓PDF
ER 2525 × 6 × 15—✓✓PDF
EQ 2525 × 5.6 × 18—✓✓PDF
E 32 / ELP 3231.75 × 6.35 × 20.35✓✓✓PDF
EQ 3030 × 8 × 20—✓✓PDF
ER 3232 × 5 × 21—✓✓PDF
E 38 / ELP 3838.1 × 8.25 × 25.4✓✓✓PDF
E 43 / ELP 4343.2 × 9.5 × 27.9✓✓✓PDF
E 58 / ELP 5858 × 11 × 38✓✓✓PDF
E 64 / ELP 6464 × 10 × 50✓✓✓PDF
ELP 102102 × 20 × 38—✓✓PDF
Customon request————

Ferroxcube PLT plates

Matching low-profile plates — combine with an E core (E+PLT set) for half-height, or two E cores (E+E) for double winding window. One plate per E core size:

PLT 14 · 18 · 22 · 32 · 38 · 43 · 58 · 64