US2.8-4LVU. Features IEC COMPATIBILITY (EN ) Schematic & PIN Configuration. Transient Voltage Suppressor SO-8.

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Document: W314, Rev: C Transient Voltage Suppressor Features 4 Watts peak pulse power (t p =8/2μs) Protects Two Line Pairs (Four lines) Low capacitance Low leakage current Low operating and clamping

1 Document: W314, Rev: C Transient Voltage Suppressor Features 4 Watts peak pulse power (t p =8/2μs) Protects Two Line Pairs (Four lines) Low capacitance Low leakage current Low operating and clamping voltage Solid-state Punch through Avalanche TVS process technology IEC COMPATIBILITY (EN61-4) SO-8 IEC (ESD) ±15kV (air), ±8kV (contact) IEC (EFT) 4A (5/5ns) IEC (Lightning) 24A (8/2μs) Mechanical Characteristics Applications JEDEC SO-8 package Molding compound flammability rating: UL 94V- Marking: Marking Code Packaging: Tape and Reel RoHS/WEEE Compliant Switching Systems WAN/LAN Equipment Desktops, Serves, Notebooks& Handhelds 1/1 Ethernet Base Stations Audio/Video Inputs Schematic & PIN Configuration SO-8 (Top View) 28 WAYON Corporation 1 / 8

2 Absolute Maximum Rating Rating Sy mbol Value Units Peak Pulse Power(t p =8/2μs) see Figure1& Figure2 P PP 4 Watts Peak Pulse Current(t p =8/2μs) I PP 24 A Lead Soldering Temperature T L 26(1sec) C Operating Temperature T J -55 to C Storage Temperature T STG -55 to +15 C Electrical Parameters (T=25 ) Symbol IPP Parameter Maximum Reverse Peak Pulse Current VC VRWM Clamping IPP Working Peak Reverse Voltage IR Maximum Reverse Leakage VRWM VPT Punch-through Breakdown IT V SB I SB Snap-Back I SB Snap-Back Current IPT Test Current VPTF IPTF Forward Punch-through Breakdown I F Forward Test Current Electrical Characteristics(T=25 ) WS2.8-4LVU Parameter Sy mbol Conditions Minimum Typical Maximum Units Reverse Stand-Off Voltage V RWM 2.8 V Punch-through Vo ltage V PT I PT =2μA, 3. V Reverse Leakage Current I R V RWM =2.8V 1 μa Snap-Back Voltage V SB I SB =5mA, 2.8 V 28 WAYON Corporation

3 Electrical Characteristics (Cont.) Parameter Sy mbol Conditions Minimum Typical Maximum Units Clamping Voltage ( Note1) V C I PP =2A, tp=8/2μs 6 V Clamping Voltage V C I PP =5A, tp=8/2μs 9.5 V Clamping Voltage V C I PP =24A, tp=8/2μs 17 V Junction Capacitance C j V R = V, f = 1MHz 3. pf Steer Diodes Reverse Breakdown Voltage V BR I T =1µA See Note4 5 V Reverse Leakage Current I R V RWM = 2.8V See Note4 1 μa Forward Voltage (Note 3) V F I F =1A See Note5 2 V NOTES: 1. Device measured between pin 1 to 2, pin 3 to 4, pin 5 to 6 and pin 7 to The 8/2μs test pulse wave is shown in figure3, and the clamping voltage vs. I PP is shown in figure4. 3. The Junction Capacitance vs. Reverse Voltage is shown in figure5. 4. Each Steer Diode integrated in the reversely connected with a TVS Diode in series 5. The Forward Voltage vs. Forward Current for Steer diode is shown in figure6. 28 WAYON Corporation 3 / 8

4 Typical Characteristics Figure 1: Peak Pulse Power vs. Pulse Time Figure 2: Power Derating Curve Ppp Peak Pulse Power - Ppp(KW) w 8/2µs Waveform Percent of Rated Power for Ipp t d Pulse Duration - µs Ambient Temperature - T A ( ) Figure3: Pulse Waveform Figure 4: Clamping Voltage vs. Peak Pulse Current Percent Ipp e -1 td=ipp/2 Time (µs) Waveform Paramters tr=8µs td=2µs Clamping Voltage VC (V) Test Waveform Paramters tr=8µs td=2µs Peak Pulse Current I PP (A) Figure 5: Capacitance vs. Reverse Voltage Figure 6: Forward Voltage vs. Forward Current Capacitance Cj (pf) f=1 MHz Forward Voltage VF(V) Test Waveform Paramters tr=8µs td=2µs Reverse Voltage V R (V) Forward Current I F (A) 28 WAYON Corporation 4 / 8

5 Application Information The is designed to pro viding p rotection for electronic equi pment that is susceptible to damage caused by Electrostatic Discharg e (ESD), Electrical Fast Transients (E FT) and tertiary light ning effects. This product is offered in a unidirectional configurati on and provides both common-mode and differential-mode protection. Unidirectional Common-mode Protection The protects four lines in a common-mo de configuration. Pin 1 is connected to Line1. Pin 3 is connected to Line2 Pin 5 is connected to Line3. Pin 7 is connected to Line4 Other Pins are connected to ground. Bidirectional Common-mode Protection The device provide two lines of bidirectional protection in a common-mode configuration. Pin1 &Pin8 are connected to Line1 Pin4&Pin5 are connected to Line2 Other Pins are connected to ground. Bidirectional Differential-mode Protection The device provide four lines of bidirectional protection in a differential-mode configuration. Pin1 & Pin8 is connected to Line1 Pin2 & Pin7 is connected to Line2 Pin3 & Pin6 is connected to Line3 Pin4 & Pin5 is connected to Line4 Line1&Line2 compose Line Pair1,Line3&Line4 compose Line Pair2 28 WAYON Corporation 5 / 8

6 Main Application 1/1 Ethernet Protection Circuit 28 WAYON Corporation 6 / 8

7 Main Application (Cont) quad Transformer Gigabit Ethernet Protection Circuit 28 WAYON Corporation 7 / 8

8 Outline Drawing SO-8 PACKAGE OUTLINE DIMENSIONS SYMBOL INCHES MI LIMETER MIN MAX MIN MAX A a a D F E e. 5BSC.5BSC 1.27BSC 1.27BSC L θ 1 1 DIMENSIONS DIM INCHES MILLIMETERS C G P X Y Z Notes 1. This land pattern is for reference purposes only consult your manufacturing group to ensure your company's manufacturing guidelines are met. 2. Reference ipc-sm-782a.. Marking Codes Part Number Marking Code WS2.8-4LVU 28 WAYON Corporation 8 / 8

WS2.8LVU. Features IEC COMPATIBILITY (EN ) Transient Voltage Suppressor. SOT23-3L (Top View) Document: W , Rev: C

WS2.8LVU. Features IEC COMPATIBILITY (EN ) Transient Voltage Suppressor. SOT23-3L (Top View) Document: W , Rev: C Document: W33, Rev: C Transient Voltage Suppressor Features 4 Watts peak pulse power (t p =8/μs) One device protects one unidirectional line Two devices protect two high-speed data line pairs Low capacitance