CORPORATION GD491SD Description ISSUED DATE :2005/07/11 REVISED DATE : S U R F A C E M O U N T, S C H O T T K Y B A R R I E R D I O D E V O LT A G E 2 5 V, C U R R E N T 1 A The GD491SD is low power rectification for switching power supply. Package Dimensions REF. A A1 A2 D E HE Millimeter Min. Max. 0.85 1.05 0 0.10 0.80 1.00 1.15 1.45 1.60 1.80 2.30 2.70 REF. L b c Q1 Millimeter Min. Max. 0.20 0.25 0.10 0.40 0.40 0.18 0.15 BSC. Absolute Maximum Ratings at Ta = 25 Parameter Operating Junction Temperature Symbol Ratings Unit Tj -50 ~ +125 Storage Temperature Tstg -50 ~ +150 Maximum Recurrent Peak Reverse Voltage VRRM 25 V Maximum RMS Voltage VRPS 18 V Maximum DC Blocking Voltage VDC 20 V Io 1 A Maximum Average Forward Rectified Current IFSM 3.0 A Typical Junction Capacitance between Terminal (Note 1) CJ 30 pF Total Power Dissipation PD 225 mW Peak Forward Surge Current at 8.3mSec single half sine-wave Electrical Characteristics (at TA = 25 Parameter Reverse Breakdown Voltage unless otherwise noted) Symbol Min. Max. Unit V(BR)R 25 - V Maximum Instantaneous Forward Voltage VF - 450 mV Reverse Leakage Current IR - 200 A Test Conditions IR=100 A IF=1A VR=20V Notes: 1. Measured at 1.0 MHz and applied reverse voltage of 10 volts. 2. ESD sensitive product handling required. 1/2 CORPORATION ISSUED DATE :2005/07/11 REVISED DATE : Characteristics Curve Important Notice: All rights are reserved. Reproduction in whole or in part is prohibited without the prior written approval of GTM. GTM reserves the right to make changes to its products without notice. GTM semiconductor products are not warranted to be suitable for use in life-support Applications, or systems. GTM assumes no liability for any consequence of customer product design, infringement of patents, or application assistance. Head Office And Factory: Taiwan: No. 17-1 Tatung Rd. Fu Kou Hsin-Chu Industrial Park, Hsin-Chu, Taiwan, R. O. C. TEL : 886-3-597-7061 FAX : 886-3-597-9220, 597-0785 China: (201203) No.255, Jang-Jiang Tsai-Lueng RD. , Pu-Dung-Hsin District, Shang-Hai City, China TEL : 86-21-5895-7671 ~ 4 FAX : 86-21-38950165 2/2