WS12M2T Transient Voltage Suppressor Features 300 watts peak pulse power (tp = 8/20μs) ESD Protection > 15 kilovolts Protects one bidirectional line or two unidirectional lines Working Voltages: 12V Low clamping voltages IEC COMPATIBILITY (EN61000-4) IEC 61000-4-2 (ESD) ±15kV (air), ±8kV (contact) IEC 61000-4-4 (EFT) 40A (5/50ns) IEC 61000-4-5 (Lightning) 12A (8/20μs) Mechanical Characteristics Applications JEDEC SOT23 package RS-232, RS-422 & RS-485 Molding compound flammability rating: Cellular Handsets and Accessories UL 94V-0 Control & Monitoring Systems Marking: Marking Code Portable Electronics Packaging: Tape and Reel per EIA 481 Set-Top Box RoHS/WEEE Compliant Servers, Notebook, and Desktop PC Wireless Bus Protection Circuit Diagram Schematic & PIN Configuration 2 1 3 3 2 1 SOT-23 (Top View) ©2008 WAYON Corporation www.way-on.com 1/4 Silicontrol TM WS12M2T Overvoltage Protection Products Absolute Maximum Rating Rating Symbol Value Units Peak Pulse Power（tp=8/20μs） PPP 300 Watts Lead Soldering Temperature TL 260(10sec) °C Operating Temperature TJ -55 to + 125 °C TSTG -55 to +150 °C Storage Temperature Electrical Parameters (T=25℃) Symbol Parameter I IPP Maximum Reverse Peak Pulse Current VC Clamping Voltage @ IPP VRWM IR VBR IF Working Peak Reverse Voltage Maximum Reverse Leakage Current @ VRWM VC VBR VRWM Breakdown Voltage @ IT IT Test Current IF Forward Current VF Forward Voltage @ IF V IR VF IT IPP Electrical Characteristics WS12M2T Parameter Reverse Stand-Off Voltage Reverse Breakdown Voltage Symbol Conditions Minimum Typical VRWM Maximum Units 12 V VBR IT=1mA Reverse Leakage Current IR VRWM=12V,T=25°C 1 μA Peak Pulse Current IPP tp =8/20μs 12 A Clamping Voltage VC IPP=1A, tp=8/20μs 19 V Maximum Clamping Voltage VC IPP=12A, tp=8/20μs 25 V Junction Capacitance Cj Junction Capacitance Cj ©2008 WAYON Corporation Pin 1 to 2 VR = 0V, f = 1MHz Pin 1 to 3 and Pin 2 to 3 VR = 0V, f = 1MHz www.way-on.com 13.3 V 30 pF 50 pF 2/4 Silicontrol TM WS12M2T Overvoltage Protection Products Typical Characteristics Peak Pulse Power vs. Pulse Time Power Derating Curve 110 100 1,000 % of Rated Power or IPP Ppp–Peak Pulse Power–Watts 10,000 300w 8/20µs Waveform 100 90 80 70 60 50 40 30 20 10 10 0 0.1 1 10 100 1000 10000 0 25 50 75 100 125 Ambient Temprature -TA(°C) td–Pulse Duration–µs ESD Pulse Waveform (Per IEC 61000-4-2) Pulse Waveform 110 Waveform Paramters tr=8µs td=20µs 100 90 Percent of Ipp 80 70 e-t 60 50 40 30 td=Ipp/2 20 10 R1 0 0 5 10 15 25 30 35 Time (µs) ©2008 WAYON Corporation Ref1 500mV 10.0ns www.way-on.com 3/4 150 Silicontrol TM WS12M2T Overvoltage Protection Products Outline Drawing – SOT-23 3 PACKAGE OUTLINE 1 2 SOT-23 D 3 DIMENSIONS E1 E 0.25 θ 1 b e A INCHES MAX MIN MAX A 0.900 1.150 0.035 0.045 A1 0.000 0.100 A2 0.900 1.050 0.035 0.041 D 2.800 3.000 0.110 0.118 b 0.300 0.500 0.012 0.020 E 2.250 2.550 0.089 0.100 E1 1.200 1.400 0.047 0.055 e A1 MILLIMETER MIN L 2 A2 SYMBOL 0.000 0.950 BSC L 0.300 0.500 θ 0 8 ○ 0.004 0.037 BSC 0.012 0.020 0 8 ○ Notes b DIMENSIONS DIM Z M C e INCHES MILLIMETERS M 0.088 2.20 C 0.0058 0.15 Z 0.093 2.35 e 0.037 BSC 0.95 BSC e1 0.074 BSC 1.9 BSC b 0.0389 0.35 1. Dimensioning and tolerances per ANSI Y14.5M, 1985. 2. Controlling Dimension: Inches 3. Pin 3 is the cathode (Unidirectional Only). 4. Dimensions are exclusive of mold flash and metal burrs. e1 Marking Codes Part Number WS12M2T Marking Code AM2 CONTACT INFORMATION SHANGHAI CHANGYUAN WAYON CIRCUIT PROTECTION CO., LTD. No.1001, Shiwan(7) Road, Pudong District, Shanghai, P.R.China.201202 Tel: 86-21-50310888 Fax: 86-21-50757680 Email: [email protected] WAYON website: http://www.way-on.com For additional information, please contact your local Sales Representative. ® and ® are registered trademarks of Wayon Corporation. ©2008 WAYON Corporation www.way-on.com 4/4