づ け Fixed Inductors for Surface Mounting 面実装用固定インダクタ DB315C/DB318C/DB320C Inductance Range: 1.0~22μH (DB315C), 1.0~22μH (DB318C), 3.9~27μH (DB320C)) Recommended patterns DIMENSIONS／外形寸法図 推奨パターン図 3.8 * DB320C DB318C (Unit: mm) DB315C (Unit: mm) * DB315C: 1.5mm Max. height DB318C: 1.8mm Max. height DB320C: 2.0mm Max. height FEATURES／特長 • Low profile (4.0mm Max. square,1.5/1.8/2.0mm Max. height). • Magnetically shielded construction and low DC resistanse. • Ideal for DC-DC converter choke coil for portable equipments (DVD, DSC, Cellular phone, PDA). • RoHS compliant. TYPE • 小型薄形構造(4.0mm角Max. 高さ1.5/1.8/2.0mmMax.) • 閉磁路構造、低直流抵抗 • 小型機器（DVD, DSC, Cellular phone, PDA）などのDCDCコンバータ用チョークコイルに最適 • RoHS指令対応 SELECTION GUIDE FOR STANDARD COILS DB315C ( Quantity / reel; 2,000 PCS) (1) 東光品番 インダクタンス TOKO Part Number Inductance (μH) A1109AS-H-1R0N A1109AS-H-1R6N A1109AS-H-2R2N A1109AS-H-3R3M A1109AS-H-4R7M A1109AS-H-6R8M A1109AS-H-8R2M A1109AS-H-100M A1109AS-H-120M A1109AS-H-150M A1109AS-H-180M A1109AS-H-220M (1) 1.0 1.6 2.2 3.3 4.7 6.8 8.2 10.0 12.0 15.0 18.0 22.0 許容差 (2) 直流抵抗 Tolerance (%) DC (2) Resistance (mΩ) Max. (Typ.) ±30 ±30 ±30 ±20 ±20 ±20 ±20 ±20 ±20 ±20 ±20 ±20 51 (43) 68 (57) 78 (65) 110 (88) 150 (120) 210 (180) 290 (240) 310 (260) 420 (350) 560 (470) 640 (530) 720 (600) (3) 直流重畳許容電流 Inductance (3) Decrease Current (A) Max. (Typ.) ΔL ΔL L =10% L =30% 2.00 (2.70) 1.60 (2.10) 1.40 (1.90) 1.10 (1.50) 0.92 (1.20) 0.72 (0.97) 0.67 (0.89) 0.62 (0.83) 0.55 (0.73) 0.51 (0.68) 0.47 (0.62) 0.41 (0.55) 2.60 (3.50) 2.00 (2.70) 1.80 (2.40) 1.40 (1.90) 1.20 (1.60) 0.96 (1.30) 0.87 (1.20) 0.81 (1.10) 0.72 (0.96) 0.66 (0.88) 0.60 (0.81) 0.54 (0.73) (3) 温度上昇許容電流 Temperature (3) Rise Current ΔT=40°C (A) Max. (Typ.) 2.10 (2.50) 1.70 (2.00) 1.60 (1.90) 1.40 (1.60) 1.10 (1.30) 0.93 (1.10) 0.77 (0.91) 0.74 (0.87) 0.62 (0.72) 0.52 (0.62) 0.49 (0.58) 0.45 (0.53) continued on next page 次頁へ続く づ け Fixed Inductors for Surface Mounting 面実装用固定インダクタ continued from previous page 前頁より続く SELECTION GUIDE FOR STANDARD COILS TYPE DB318C (Quantity/reel; 2,000 PCS) (1) 東光品番 インダクタンス TOKO Part Number Inductance (μH) A997AS-1R0N A997AS-2R2N A997AS-3R3M A997AS-3R9M A997AS-4R7M A997AS-5R6M A997AS-6R8M A997AS-8R2M A997AS-100M A997AS-120M A997AS-150M A997AS-180M A997AS-220M TYPE (1) 1.0 2.2 3.3 3.9 4.7 5.6 6.8 8.2 10.0 12.0 15.0 18.0 22.0 許容差 (2) 直流抵抗 Tolerance (%) DC (2) Resistance (mΩ) Max. (Typ.) ± 30 ± 30 ± 20 ± 20 ± 20 ± 20 ± 20 ± 20 ± 20 ± 20 ± 20 ± 20 ± 20 40 (32) 60 (48) 70 (60) 90 (80) 100 (90) 120 (100) 130 (110) 160 (140) 180 (150) 230 (190) 260 (210) 330 (270) 440 (370) (3) 直流重畳許容電流 Inductance (3) Decrease Current (A) Max. (Typ.) ΔL ΔL L =10% L =30% 1.80 (2.40) 1.30 (1.70) 0.94 (1.26) 0.86 (1.15) 0.85 (1.14) 0.81 (1.09) 0.69 (0.92) 0.59 (0.78) 0.58 (0.77) 0.55 (0.73) 0.48 (0.64) 0.42 (0.56) 0.39 (0.52) 2.30 (3.10) 1.60 (2.10) 1.20 (1.61) 1.10 (1.46) 1.07 (1.43) 1.02 (1.36) 0.89 (1.19) 0.75 (1.00) 0.74 (0.99) 0.70 (0.94) 0.61 (0.81) 0.53 (0.70) 0.51 (0.67) (3) 温度上昇許容電流 Temperature (3) Rise Current ΔT=40°C (A) Max. (Typ.) 1 2.40 (2.80) 1.90 (2.20) 1.64 (1.93) 1.37 (1.61) 1.29 (1.52) 1.23 (1.45) 1.10 (1.29) 1.05 (1.23) 0.99 (1.16) 0.78 (0.92) 0.74 (0.87) 0.63 (0.74) 0.53 (0.63) 2 3 DB320C (Quantity/reel; 2,000 PCS) (1) 東光品番 インダクタンス TOKO Part Number Inductance (μH) A993AS-3R9M A993AS-4R7M A993AS-5R6M A993AS-6R8M A993AS-8R2M A993AS-100M A993AS-120M A993AS-150M A993AS-180M A993AS-220M A993AS-270M (1) 3.9 4.7 5.6 6.8 8.2 10.0 12.0 15.0 18.0 22.0 27.0 許容差 (2) 直流抵抗 Tolerance (%) DC (2) Resistance (mΩ) Max. (Typ.) ± 20 ± 20 ± 20 ± 20 ± 20 ± 20 ± 20 ± 20 ± 20 ± 20 ± 20 80 (70) 100 (80) 110 (90) 120 (100) 140 (120) 160 (130) 190 (160) 240 (200) 290 (240) 370 (310) 480 (400) (1) Inductance is measured with a LCR meter 4284A (Agilent Technologies) or equivalent. Test frequency at 100kHz (2) DC Resistance is measured with a Digital Multimeter TR6871 (Advantest) or equivalent. (3) Maximum allowable DC current is that which causes a 30% inductance reduction from the initial value, coil temperature to rise by 40°C, whichever is smaller. (Reference ambient temperature 20°C) (3) 直流重畳許容電流 Inductance (3) Decrease Current (A) Max. (Typ.) ΔL ΔL L =10% L =30% 0.86 (1.15) 0.85 (1.14) 0.73 (0.97) 0.70 (0.93) 0.66 (0.88) 0.59 (0.78) 0.56 (0.74) 0.49 (0.65) 0.45 (0.60) 0.41 (0.55) 0.35 (0.47) 1.10 (1.47) 1.08 (1.44) 0.97 (1.29) 0.89 (1.18) 0.85 (1.14) 0.74 (0.99) 0.69 (0.92) 0.62 (0.82) 0.56 (0.74) 0.52 (0.69) 0.45 (0.60) (3) 温度上昇許容電流 Temperature (3) Rise Current ΔT=40°C (A) Max. (Typ.) 1.38 (1.73) 1.28 (1.60) 1.21 (1.52) 1.19 (1.49) 0.97 (1.21) 0.96 (1.20) 0.83 (1.04) 0.74 (0.93) 0.65 (0.82) 0.55 (0.69) 0.47 (0.59) (1) インダクタンスはLCRメータ4284A (Agilent Technologies) また は同等品により測定する。測定周波数は100kHz。 (2) 直流抵抗はデジタルマルチメータTR6871(Advantest)または同等 品により測定する。 (3) 最大許容電流は、直流重畳電流を流した時、インダクタンスの値 が初期値より30％減少する直流電流値、またはコイルの温度が 40℃上昇する直流電流値の何れかの内、小さい値とする。 (周囲温度20℃を基準とする） 4 6 7 8 9