EIR Cores
MMG offers EIR cores for SMD transformer applications utilizing power, signal or high permeability ferrite materials. The cores can be supplied ungapped, or gapped to suit specific requirements.
Features
- Very low total height
- Low stray inductance
- High DC magnetic bias
Applications
- Low power DC-DC converters
- Pulse transformers
| Core |
A (mm) |
B (mm) |
C (mm) |
D (mm) |
E (mm) |
F (mm) |
G (mm) |
| EIR12/3.4 |
12.00±0.25 |
10.00±0.25 |
4.80±0.10 |
9.00±0.20 |
2.40±0.10 |
3.40±0.10 |
1.00±0.05 |
| EIR12/4.0 |
12.00±0.25 |
10.00±0.25 |
4.80±0.10 |
9.00±0.20 |
3.00±0.10 |
4.00±0.10 |
1.00±0.05 |
| EIR14.5/6 |
14.50±0.20 |
11.80±0.20 |
4.70±0.10 |
6.70±0.10 |
2.80±0.10 |
4.10±0.10 |
1.30±0.20 |
| Core |
Material |
AL Value |
Tolerance |
Part Number |
| EIR12/3.4 |
F48 |
1800 |
+25/-25 % |
C86-S0000-X18 |
| EIR12/3.4 |
HK500 |
1700 |
+25/-25 % |
C86-S0000-X10 |
| EIR12/4.0 |
F48 |
1500 |
+25/-25 % |
C87-S0000-X18 |
| EIR12/4.0 |
HK500 |
1400 |
+25/-25 % |
C87-S0000-X10 |
| EIR14.5/6 |
F48 |
160 |
+3/-3 % |
C88-A0160-X18 |