April 30, 2020
Inductors: Compact dual inductors with high saturation current
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TDK Corporation has extended its range of dual inductors to include the new EPCOS series B82477D6*. The seven series types cover an inductance range from 2 x 3.9 µH to 2 x 47 µH and are designed for maximum rated currents from 2.83 A to 7.05 A. A special feature of the inductors, which are certified according to AEC-Q200 and compatible with RoHS, are the high saturation currents of up to 16.1 A. The magnetically shielded inductors have dimensions of just 12.5 x 12.5 x 10.5 mm3 and are designed for a wide temperature range of -55°C to +150 °C. Depending on the type, the inductors offer very high coupling factors of the two windings from 97 to 99 per cent.
The fields of application of dual inductors are diverse: Indeed, they can be used as coupled inductors in SEPIC (Single-Ended Primary Inductance Converter) or 1:1 transformers in flyback topologies. A further application involves use as a common-mode inductor in power supply lines. The isolation voltage between the two windings is >500 V.
Main fields of application
- Common-mode inductors in power supply lines
- DC/DC converters in SEPIC topology
- Flyback converters
Main features and benefits
- High saturation currents of up to 16.1 A
- Low dimensions of just 12.5 x 12.5 x 10.5 mm3
- Wide temperature range of -55°C to +150°C
- High coupling factor of up to 99 per cent
Characteristics
| Ordering code | Inductance L1, L2 [µH] | Max. rated current [A] | Saturation current [A] | DC resistance L1, L2 [mΩ] |
|---|---|---|---|---|
| B82477D6392M603 | 3.9 | 7.05 | 16.1 | 13.9 |
| B82477D6682M603 | 6.8 | 6.40 | 11.8 | 17.0 |
| B82477D6103M603 | 10 | 5.65 | 9.9 | 22.5 |
| B82477D6153M603 | 15 | 4.92 | 8.7 | 29.6 |
| B82477D6223M603 | 22 | 3.85 | 7.2 | 45.0 |
| B82477D6333M603 | 33 | 3.22 | 5.6 | 60.5 |
| B82477D6473M603 | 47 | 2.83 | 4.7 | 81.8 |
Further information on the products can be found under www.tdk-electronics.tdk.com/en/power_inductors.
About TDK Corporation
TDK Corporation is a leading electronics company based in Tokyo, Japan. It was established in 1935 to commercialize ferrite, a key material in electronic and magnetic products. TDK's comprehensive portfolio features passive components such as ceramic, aluminum electrolytic and film capacitors, as well as magnetics, high-frequency, and piezo and protection devices. The product spectrum also includes sensors and sensor systems such as temperature and pressure, magnetic, and MEMS sensors. In addition, TDK provides power supplies and energy devices, magnetic heads and more. These products are marketed under the product brands TDK, EPCOS, InvenSense, Micronas, Tronics and TDK-Lambda. TDK focuses on demanding markets in the areas of information and communication technology and automotive, industrial and consumer electronics. The company has a network of design and manufacturing locations and sales offices in Asia, Europe, and in North and South America. In fiscal 2019, TDK posted total sales of USD 12.5 billion and employed about 105,000 people worldwide.
