SEPIC/ZETA Transformers SQR1257C
AEC-Q200 2 in 1
Mag 
Features
- Small size and high efficiency are realized with the 2 in 1 structure, developed specifically for the SEPIC and ZETA converter.
- Magnetically shielded structure, high current.
- Four terminals structure for resisting to mechanical shock and vibration.
- AEC-Q200 compliant
- Operating temperature：-40℃～+125℃(The self-heating is included)
Applications
- AudioVisual Camera
- Automotive Car Audio, Car Navigation, ECU, LED Headlights
- Others Power Supply, FA
Electrical Characteristics
| Part Number | Inductance(µH) | DCR (Ω) ±30% | DC Saturation Allowable Current (A) | Temperature Rise Allowable Current (A) | ||
|---|---|---|---|---|---|---|
| ④-③ | ②-① | One winding | Series connection | |||
| SQR1257C-1R2N | 1.2 ± 30% | 0.008 | 0.009 | 15.4 | 5.4 | 3.8 |
| SQR1257C-2R0N | 2 ± 30% | 0.01 | 0.011 | 12.1 | 4.9 | 3.5 |
| SQR1257C-2R7N | 2.7 ± 30% | 0.012 | 0.014 | 10 | 4.4 | 3.2 |
| SQR1257C-3R9N | 3.9 ± 30% | 0.016 | 0.019 | 8.55 | 3.9 | 2.75 |
| SQR1257C-5R1N | 5.1 ± 30% | 0.02 | 0.023 | 7.5 | 3.35 | 2.5 |
| SQR1257C-6R2N | 6.2 ± 30% | 0.023 | 0.027 | 6.6 | 3.1 | 2.4 |
| SQR1257C-8R2N | 8.2 ± 30% | 0.029 | 0.035 | 5.8 | 2.75 | 2 |
| SQR1257C-100M | 10 ± 20% | 0.036 | 0.042 | 5.35 | 2.55 | 1.8 |
| SQR1257C-120M | 12 ± 20% | 0.046 | 0.054 | 4.95 | 2.2 | 1.6 |
| SQR1257C-150M | 15 ± 20% | 0.054 | 0.064 | 4.15 | 2 | 1.45 |
| SQR1257C-180M | 18 ± 20% | 0.065 | 0.077 | 3.75 | 1.8 | 1.35 |
| SQR1257C-220M | 22 ± 20% | 0.085 | 0.1 | 3.4 | 1.6 | 1.2 |
| SQR1257C-270M | 27 ± 20% | 0.09 | 0.11 | 3.25 | 1.5 | 1.1 |
| SQR1257C-330M | 33 ± 20% | 0.12 | 0.14 | 2.8 | 1.4 | 1.05 |
| SQR1257C-390M | 39 ± 20% | 0.14 | 0.16 | 2.6 | 1.25 | 0.91 |
| SQR1257C-470M | 47 ± 20% | 0.16 | 0.19 | 2.35 | 1.15 | 0.83 |
| SQR1257C-560M | 56 ± 20% | 0.19 | 0.23 | 2.2 | 1.05 | 0.77 |
| SQR1257C-680M | 68 ± 20% | 0.24 | 0.28 | 1.9 | 0.92 | 0.69 |
| SQR1257C-820M | 82 ± 20% | 0.27 | 0.33 | 1.8 | 0.85 | 0.64 |
| SQR1257C-101M | 100 ± 20% | 0.34 | 0.41 | 1.55 | 0.75 | 0.55 |
| SQR1257C-121M | 120 ± 20% | 0.42 | 0.51 | 1.45 | 0.68 | 0.51 |
| SQR1257C-151M | 150 ± 20% | 0.52 | 0.63 | 1.35 | 0.61 | 0.46 |
| SQR1257C-181M | 180 ± 20% | 0.65 | 0.79 | 1.25 | 0.54 | 0.42 |
| SQR1257C-221M | 220 ± 20% | 0.84 | 1.01 | 1.05 | 0.47 | 0.36 |
| SQR1257C-271M | 270 ± 20% | 1 | 1.2 | 1 | 0.43 | 0.33 |
| SQR1257C-331M | 330 ± 20% | 1.1 | 1.35 | 0.9 | 0.4 | 0.3 |
- 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 Resistance
Characteristics of Temperature Rise
