SMD Power Inductors CER1257B
Product Info.
General Info.
Features
- Cost competitive shielded type inductor
- SMD magnetic shielded type of power inductor
- Suitable for power supply choke coil
- Construction for high current
- Operating temperature：-40℃～+125℃(The self-heating is included)
Applications
- AudioVisual TV and Monitor, Mini System, AV Amplifier, for Professionals, Camera, Recorder
- Computer & Peripheral Device Computer, Printer(MFP), Industorial Machines
- Home Electronics LED Lights
- Others Power Supply, FA, Medical, Energy, Transceivers
Electrical Characteristics
| Part Number | Inductance (µH) | DCR (Ω)±30% | DC Saturation Allowable Current (A) | Temperature Rise Allowable Current (A) | ||
|---|---|---|---|---|---|---|
| Typical | Spec | Typical | Spec | |||
| CER1257B-2R2N | 2.2 ± 30% | 0.006 | 17.1 | 11.4 | 9.9 | 6.8 |
| CER1257B-3R3N | 3.3 ± 30% | 0.008 | 13.1 | 9.4 | 8.95 | 5.7 |
| CER1257B-4R3N | 4.3 ± 30% | 0.009 | 11.7 | 8.1 | 8.15 | 5.45 |
| CER1257B-5R6N | 5.6 ± 30% | 0.011 | 10.5 | 7.1 | 7.5 | 5 |
| CER1257B-7R5N | 7.5 ± 30% | 0.012 | 8.85 | 6.2 | 7 | 4.7 |
| CER1257B-100M | 10 ± 20% | 0.017 | 8.1 | 5.6 | 5.8 | 4 |
| CER1257B-120M | 12 ± 20% | 0.022 | 7.25 | 5 | 5.15 | 3.7 |
| CER1257B-150M | 15 ± 20% | 0.026 | 6.25 | 4.4 | 4.6 | 3.3 |
| CER1257B-180M | 18 ± 20% | 0.029 | 5.7 | 4 | 4.4 | 2.95 |
| CER1257B-220M | 22 ± 20% | 0.033 | 5.5 | 3.7 | 4.1 | 2.65 |
| CER1257B-270M | 27 ± 20% | 0.043 | 4.75 | 3.2 | 3.55 | 2.55 |
| CER1257B-330M | 33 ± 20% | 0.053 | 4 | 2.95 | 3.15 | 2.3 |
| CER1257B-390M | 39 ± 20% | 0.056 | 3.75 | 2.75 | 3.05 | 2.2 |
| CER1257B-470M | 47 ± 20% | 0.069 | 3.45 | 2.5 | 2.75 | 1.95 |
| CER1257B-560M | 56 ± 20% | 0.081 | 3.2 | 2.3 | 2.5 | 1.8 |
| CER1257B-680M | 68 ± 20% | 0.096 | 2.9 | 2.05 | 2.3 | 1.6 |
| CER1257B-820M | 82 ± 20% | 0.13 | 2.6 | 1.85 | 1.95 | 1.4 |
| CER1257B-101M | 100 ± 20% | 0.14 | 2.35 | 1.65 | 1.85 | 1.3 |
| CER1257B-121M | 120 ± 20% | 0.18 | 2.15 | 1.5 | 1.65 | 1.2 |
| CER1257B-151M | 150 ± 20% | 0.23 | 1.9 | 1.35 | 1.45 | 1.05 |
| CER1257B-181M | 180 ± 20% | 0.26 | 1.75 | 1.2 | 1.3 | 1 |
| CER1257B-221M | 220 ± 20% | 0.32 | 1.55 | 1.1 | 1.2 | 0.88 |
| CER1257B-271M | 270 ± 20% | 0.38 | 1.4 | 1 | 1.1 | 0.81 |
| CER1257B-331M | 330 ± 20% | 0.47 | 1.25 | 0.9 | 0.99 | 0.7 |
| CER1257B-391M | 390 ± 20% | 0.54 | 1.15 | 0.8 | 0.92 | 0.67 |
| CER1257B-471M | 470 ± 20% | 0.66 | 1.05 | 0.75 | 0.83 | 0.61 |
| CER1257B-561M | 560 ± 20% | 0.79 | 1 | 0.7 | 0.75 | 0.54 |
| CER1257B-681M | 680 ± 20% | 0.95 | 0.9 | 0.65 | 0.68 | 0.5 |
| CER1257B-821M | 820 ± 20% | 1.15 | 0.79 | 0.55 | 0.61 | 0.44 |
| CER1257B-102M | 1000 ± 20% | 1.42 | 0.73 | 0.5 | 0.55 | 0.4 |
- Inductance Measuring Condition:100kHz,1V
- DC saturation allowable current:The current value which inductance decrease within 30% from the initial value
- Temperature rise allowable current:The rise in temperature of core surface is within 40℃
Current characteristic graph
Characteristics of DC Superposition
Characteristics of Temperature Rise
