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SEPIC/ZETA Transformers    SQR1277CA

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

  • Automotive
  • Car Audio, Car Navigation, ECU, LED Headlights
  • Others
  • Power Supply, FA, Medical, Energy

Electrical Characteristics

Part Number Inductance(µH) DCR (Ω) .max DC Saturation Allowable Current (A) Temperature Rise Allowable Current (A)
④-③ ①-② One winding Series connection
SQR1277CA-2R2A 2.2 ± 35% 0.017 0.017 13.6 4.2 3.35
SQR1277CA-3R0A 3 ± 35% 0.021 0.021 11.2 3.85 3.1
SQR1277CA-3R9A 3.9 ± 35% 0.023 0.018 9.15 3.75 2.95
SQR1277CA-5R1A 5.1 ± 35% 0.027 0.021 8.35 3.4 2.75
SQR1277CA-6R8A 6.8 ± 35% 0.035 0.027 7.45 3.05 2.4
SQR1277CA-8R2N 8.2 ± 30% 0.039 0.03 7 2.9 2.25
SQR1277CA-100M 10 ± 20% 0.044 0.034 6.35 2.75 2.2
SQR1277CA-120M 12 ± 20% 0.052 0.04 5.85 2.45 1.95
SQR1277CA-150M 15 ± 20% 0.071 0.054 5.15 2.15 1.7
SQR1277CA-180M 18 ± 20% 0.083 0.064 4.8 2 1.55
SQR1277CA-220M 22 ± 20% 0.11 0.08 4.35 1.75 1.35
SQR1277CA-270M 27 ± 20% 0.12 0.091 3.85 1.6 1.25
SQR1277CA-330M 33 ± 20% 0.14 0.11 3.35 1.55 1.15
SQR1277CA-390M 39 ± 20% 0.18 0.14 3.05 1.35 1.03
SQR1277CA-470M 47 ± 20% 0.2 0.15 2.9 1.3 0.98
SQR1277CA-560M 56 ± 20% 0.25 0.19 2.7 1.15 0.87
SQR1277CA-680M 68 ± 20% 0.3 0.23 2.35 1.05 0.79
SQR1277CA-820M 82 ± 20% 0.035 0.27 2.1 0.96 0.72
SQR1277CA-101M 100 ± 20% 0.42 0.33 1.95 0.88 0.66
SQR1277CA-121M 120 ± 20% 0.51 0.39 1.8 0.8 0.6
SQR1277CA-151M 150 ± 20% 0.63 0.49 1.55 0.72 0.53
SQR1277CA-181M 180 ± 20% 0.75 0.58 1.45 0.68 0.49
  • 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

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