High Frequency Wire Wound Transformers ER7.5 Platforms - SMT - PA4470.XXXNL Power Range: Up to 1.8 W Height: 6.0 mm Max Footprint: 9.5 mm x 8.0 mm Max Topology: Flyback 1 Pulse PN Electrical Specifications 25 C - Operating Temper ature -40 C to 130 C Schematic Pri. Inductance(4-3) 216uH +/- 25% Lk. Inductance(4-3) 3.5uH Max 4 5 w/ (5,6,7,8) shorted33-57v 3.3v/0.9W 7.43 1 DCR (4-3) 2.6 200kHz 3 6 PA4470.001NL (2-1)2.72 Ohms Max 2 7 (5-6) 0.11 10v/50mA 3.3v/0.9W 2.86 1 (7-8)0.12 1 8 Hi-Pot Pri-Sec 1650 Vdc K1 Factor 7187 Flyback Transformer Pri. Inductance(4-3) 216uH +/- 25% Lk. Inductance(4-3) 5 3.5uH Max 4 w/ (5,6,7,8) shorted33-57v 5.0v/0.9W 5.21 DCR (4-3) 2.6 200kHz 3 6 PA4470.002NL (2-1)1.8 Ohms Max 2 7 (5-6) 0.32 10v/50mA 5.0v/0.9W 2.0 1 (7-8)0.32 1 8 Hi-Pot Pri-Sec 1650 Vdc K1 Factor 7187 Flyback Transformer Pri. Inductance(4-3) 216uH +/- 25% Lk. Inductance(4-3) 4 5 3.5uH Max w/ (5,6,7,8) shorted33-57v 12v/0.9W 2.17 1 DCR (4-3) 2.6 200kHz 3 6 PA4470.003NL (2-1)2.72 Ohms Max 2 7 (5-6) 1.2 10v/50mA 12v/0.9W 0.83 1 (7-8)1.2 1 8 Hi-Pot Pri-Sec 1650 Vdc K1 Factor 7187 Flyback Transformer Pri. Inductance(4-3) 21.8 uH +/- 25% Lk. Inductance(4-3) 5 0.5uH Max 4 w/ (5,6,7,8) shorted10-14v 3.3v/0.9W 2.89 1 DCR (4-3) 0.3 200kHz 3 6 PA4470.004NL (2-1)1.6 Ohms Max 2 7 (5-6) 0.11 10v/50mA 3.3v/0.9W 2.86 1 (7-8)0.12 1 8 Hi-Pot Pri-Sec 1650 Vdc K1 Factor 2357 Flyback Transformer Power.PulseElectronics.com P847.D (08/20) 1High Frequency Wire Wound Transformers ER7.5 Platforms - SMT - PA4470.XXXNL 1 Pulse PN Electrical Specifications 25 C - Operating Temper ature -40 C to 130 C Schematic Pri. Inductance(4-3) 21.8 uH +/- 25% Lk. Inductance(4-3) 0.5uH Max 4 5 w/ (5,6,7,8) shorted 10-14v 5v/0.9W 1.61 DCR (4-3) 0.3 200kHz 3 6 PA4470.005NL (2-1)1.6 Ohms Max 7 2 (5-6) 0.15 10v/50mA 2.0 1 5v/0.9W (7-8)0.16 1 8 Hi-Pot Pri-Sec 1650 Vdc K1 Factor 2357 Flyback Transformer Pri. Inductance(4-3) 21.8 uH +/- 25% Lk. Inductance(4-3) 4 5 0.5uH Max w/ (5,6,7,8) shorted 10-14v 12v/0.9W 0.67 1 DCR (4-3) 0.3 200kHz 3 6 PA4470.006NL (2-1)1.6 Ohms Max 2 7 (5-6) 1.15 10v/50mA 0.83 1 12v/0.9W (7-8)1.2 1 8 Hi-Pot Pri-Sec 1650 Vdc K1 Factor 2357 Flyback Transformer Notes: 1. The temperature of the component (ambient plus temperature rise) must be within 4. Optional Tape & Reel packaging can be ordered by adding a T suffix to the part the stated operating temperature range. number (i.e. (PA4470.001NL becomes PA4470.001NLT). Pulse complies with industry 2. For flyback topology applications, it is necessary to ensure that the transformer will standard tape and reel specification EIA481. The tape and reel for this product has a not saturate in the application. The peak flux density (Bpk) should remain below width (W=24mm), pitch (Po=16mm) and depth (Ko=5.8mm). 2600Gauss. To calculate the peak flux density use the following formula: Bpk (Gauss) = K1 Factor * Ipk(A) 3. In high volt- sec applications, it is important to calculate the core loss of the trans- former. Approximate transformer core loss can be calculated as: 1.63 2.63 CoreLoss (W) = 3.84E-14 * (Freq kHz) * (B Gauss) where B can be calculated as: For Flyback Topology: B = K1 Factor * I(A) Power.PulseElectronics.com P847.D (08/20) 2