POWER INDUCTORS <SMD Type: WCDRH Series> Type: WCDRH25D18 ◆ Product Description ・3.2×3.1mm Max.(L×W), 2.3mm Max. Height. ・Inductance Range: 3.3～5.6µH ・Rated current range: 0.38～0.63A ・Customer design is available. ◆ Feature ・Magnetically shielded construction. ・Ideally used in MP3 and other portable devices. ・RoHS Compliance ◆ Dimensions(mm) 2. 9± 0. 2 0. 8 0. 6 3. 0± 0. 2 2. 3 MAX. ◆ Land Pattern (mm) ◆ Schematics (Bottom) S 1 2 S 4 3 0.5 3.2 2.3 0.6 Please refer to the sales offices on our website for a representative near you www.sumida.com 1/2 POWER INDUCTORS <SMD Type: WCDRH Series> Type: WCDRH25D18 ◆ Specification Part Number Stamp Inductance (μH) (1-2);(3-4) ※1 WCDRH25D18NP-3R3N□ A 3.3±30% 220±20％ 1.12(1.39) 0.63(0.72) WCDRH25D18NP-4R7N□ B 4.7±30% 310±20％ 0.75(0.94) 0.47(0.53) WCDRH25D18NP-5R6N□ C 5.6±30% 440±20％ 0.68(0.85) 0.38(0.43) DCR (mΩ) (1-2);(3-4) D.C Saturation Current (A) ※2 Temperature Rise Current (A) ※3 ※ Description of part name WCDRH25D18NP-3R3N□ B Box C Carrier Tape ※ 1. Measuring frequency at 100kHz, 1.0V. ※ 2. This indicates the value of current when the inductance decreases to 70% of the nominal value. ※ 3. Temperature rise current: the value of DC current when the temperature rise is △t＝40℃ (Ta＝20℃). ※ THIS SPEC IS NOT THE FINAL REVISION, AND SOME PARTS MAY BE CHANGED BEFORE PRODUCTION. Please refer to the sales offices on our website for a representative near you www.sumida.com 2/2