TDK Power Inductor Technical Data SLF12575-PF Series CONTENTS L-Q Frequency Characteristics DC Bias & Temperature Characteristics Temperature Characteristics Temperature Rise TDK CORPORATION Aug.2005 KY -1- C2520 TDK Power Inductor L-Q Frequency Characteristics SLF12575T-150M4R7-PF 100 40 80 40 80 60 30 60 20 40 20 10 20 0 100000 0 Q 30 L 20 40 10 0 1 10 100 1000 10000 Q 50 L(uH) 100 Q L(uH) SLF12575T-100M5R4-PF 50 1 10 Freq.(kHz) 1000 10000 0 100000 Freq.(kHz) SLF12575T-220M4R0-PF SLF12575T-330M3R2-PF 100 100 40 80 80 80 30 60 60 60 20 40 40 40 10 20 20 20 0 100000 0 0 1 10 100 1000 10000 Q 100 L(uH) 50 Q L(uH) 100 1 10 Freq.(kHz) 1000 10000 0 100000 Freq.(kHz) SLF12575T-470M2R7-PF SLF12575T-680M2R0-PF 200 100 80 80 160 80 60 60 120 60 40 40 80 40 20 20 40 20 0 100000 0 0 1 10 100 1000 10000 Q 100 L(uH) 100 Q L(uH) 100 1 Freq.(kHz) Aug.2005 KY 10 100 1000 10000 0 100000 Freq.(kHz) -2- C2520 TDK Power Inductor L-Q Frequency Characteristics SLF12575T-101M1R9-PF 120 100 80 400 80 60 300 60 80 200 40 20 100 20 0 100000 0 40 Q 40 0 1 10 100 1000 10000 Q L 500 Q L(uH) 160 SLF12575T-151M1R5-PF 100 L(uH) 200 1 Freq.(kHz) 10 100 1000 10000 0 100000 Freq.(kHz) 100 400 80 300 60 200 40 100 20 Q L(uH) SLF12575T-221M1R3-PF 500 0 1 10 100 1000 10000 0 100000 Freq.(kHz) Aug.2005 KY -3- C2520 TDK Power Inductor DC Bias & Temperature Characteristics SLF12575T-100M5R4-PF 12 10 L(uH) 8 Tem p. -40deg. -20 0 20 65 85 105 6 4 2 0 0 2 4 6 8 10 8 10 IDC(A) SLF12575T-150M4R7-PF 16 L(uH) 12 Tem p. -40deg. -20 0 20 65 85 105 8 4 0 0 2 4 6 IDC(A) Aug.2005 KY -4- C2520 TDK Power Inductor DC Bias & Temperature Characteristics SLF12575T-220M4R0-PF 25 20 Tem p. -40deg. -20 0 20 65 85 105 L(uH) 15 10 5 0 0 2 4 6 8 IDC(A) SLF12575T-330M3R2-PF 40 30 L(uH) Tem p. -40deg. -20 0 20 65 85 105 20 10 0 0 1 2 3 4 5 6 7 IDC(A) Aug.2005 KY -5- C2520 TDK Power Inductor DC Bias & Temperature Characteristics SLF12575T-470M2R7-PF 50 40 Tem p. -40deg. -20 0 20 65 85 105 L(uH) 30 20 10 0 0 2 4 6 IDC(A) SLF12575T-680M2R0-PF 80 60 L(uH) Tem p. -40deg. -20 0 20 65 85 105 40 20 0 0 1 2 3 4 5 IDC(A) Aug.2005 KY -6- C2520 TDK Power Inductor DC Bias & Temperature Characteristics SLF12575T-101M1R9-PF 120 80 L(uH) Tem p. -40deg. -20 0 20 65 85 105 40 0 0 1 2 3 IDC(A) SLF12575T-151M1R5-PF 160 L(uH) 120 Tem p. -40deg. -20 0 20 65 85 105 80 40 0 0.0 0.5 1.0 1.5 2.0 IDC(A) Aug.2005 KY -7- C2520 TDK Power Inductor DC Bias & Temperature Characteristics SLF12575T-221M1R3-PF 250 200 Tem p. -40deg. -20 0 20 65 85 105 L(uH) 150 100 50 0 0.0 0.5 1.0 1.5 2.0 IDC(A) Aug.2005 KY -8- C2520 TDK Power Inductor Temperature Characteristics SLF12575T-100M5R4-PF 20 15 basis on L at 20degree 10 L Change(%) L Change(%) 15 SLF12575T-150M4R7-PF 20 5 0 -5 -10 -15 basis on L at 20degree 10 5 0 -5 -10 -15 -20 -40 -20 0 20 40 60 80 -20 -40 100 -20 0 T emperature(degree) SLF12575T-220M4R0-PF 20 15 basis on L at 20degree 10 5 0 -5 -10 -15 60 80 100 80 100 80 100 basis on L at 20degree 10 5 0 -5 -10 -15 -20 -40 -20 0 20 40 60 80 100 -20 -40 -20 T emperature(degree) 15 0 20 40 60 T emperature(degree) SLF12575T-470M2R7-PF 20 SLF12575T-680M2R0-PF 20 15 basis on L at 20degree 10 L Change(%) L Change(%) 40 SLF12575T-330M3R2-PF 20 L Change(%) L Change(%) 15 20 T emperature(degree) 5 0 -5 -10 -15 basis on L at 20degree 10 5 0 -5 -10 -15 -20 -20 -40 -20 0 20 40 60 80 100 -40 T emperature(degree) Aug.2005 KY -20 0 20 40 60 T emperature(degree) -9- C2520 TDK Power Inductor Temperature Characteristics SLF12575T-101M1R9-PF 20 15 basis on L at 20degree 10 L Change(%) L Change(%) 15 5 0 -5 -10 -15 -20 -40 5 0 -5 -10 -15 -20 0 20 40 60 80 100 -20 -40 -20 0 20 40 60 80 100 T emperature(degree) SLF12575T-221M1R3-PF 20 L Change(%) basis on L at 20degree 10 T emperature(degree) 15 SLF12575T-151M1R5-PF 20 basis on L at 20degree 10 5 0 -5 -10 -15 -20 -40 -20 0 20 40 60 80 100 T emperature(degree) Aug.2005 KY - 10 - C2520 TDK Power Inductor Temperature Rise SLF12575T-100M5R4-PF SLF12575T-150M4R7-PF 40 Temperature Rise(degree) Temperature Rise(degree) 40 30 20 10 0 30 20 10 0 0 2 4 6 8 0 1 2 3 IDC(A) SLF12575T-220M4R0-PF 6 40 Temperature Rise(degree) Temperature Rise(degree) 5 SLF12575T-330M3R2-PF 40 30 20 10 0 30 20 10 0 0 1 2 3 4 5 0 1 2 IDC(A) 3 4 5 IDC(A) SLF12575T-470M2R7-PF SLF12575T-680M2R0-PF 40 Temperature Rise(degree) 40 Temperature Rise(degree) 4 IDC(A) 30 20 10 0 30 20 10 0 0 1 2 3 4 0 IDC(A) Aug.2005 KY 1 2 3 IDC(A) - 11 - C2520 TDK Power Inductor Temperature Rise SLF12575T-101M1R9-PF SLF12575T-151M1R5-PF 40 Temperature Rise(degree) Temperature Rise(degree) 40 30 20 10 0 30 20 10 0 0 1 2 3 0 IDC(A) 1 2 IDC(A) SLF12575T-221M1R3-PF Temperature Rise(degree) 40 30 20 10 0 0 1 1 2 2 IDC(A) Aug.2005 KY - 12 - C2520