Description The is a low capacitance transient voltage suppressor (TVS) diode array. It is designed to protect sensitive CMOS ICs from the damaging effects of ESD and lightning. Each device will protect one line in common (line-to-ground) mode. They are low capacitance (< 1pF) making them suitable for use on highspeed telecom and datacom interfaces without signal degradation. The configuration of the has been optimized for easy layout on high density boards. The small SOT- 143 package minimizes required board space. These devices will handle up to 1 Amps for an 8/2µs lightning impulse. The low inductance construction minimizes voltage overshoot during high current surges. The may be used to protect ADSL interfaces, portable electronics, and wireless systems. Low Capacitance TVS Diode Array PRELIMINARY Features Transient protection for high-speed data lines to IEC 6-4-2 (ESD) ±1kV (air), ±8kV (contact) IEC 6-4-4 (EFT) 4A (/ns) IEC 6-4- (lightning) 1A (8/2µs) Configuration optimized for easy board layout Protects one line Low capacitance (<1pF) for high-speed interfaces Low clamping voltage Low leakage current Operating voltage: 1V Solid-state silicon-avalanche technology Mechanical Characteristics JEDEC SOT-143 package Molding compound flammability rating: UL 94V- Marking : Marking code Packaging : Tape and Reel per EIA 481 Applications ADSL Interfaces Serial/Parallel Interfaces High-Speed Data Lines Portable Electronics WAN/LAN Equipment Wireless Systems Circuit Diagram Schematic & PIN Configuration SOT-143 (Top View) Revision 1/1/3 1
Absolute Maximum Rating Rating Symbol Value Units Peak Pulse Power (t = 8/2µs) P p k Peak Pulse Current (t = 8/2µs) I p P p P Watts 1 A Lead Soldering Temperature T L 26 ( sec. ) C Operating Temperature T J - to +12 C Storage Temperature T STG to +1 - C Electrical Characteristics Parameter Symbol Conditions Minimum Typical Maximum Units Reverse Stand-Off Voltage V WM R 1 V Reverse Breakdown Voltage B I t = 1mA 16. 7 V V R Reverse Leakage Current I R V RWM = 1V, T=2 C µ A Steering Diode Forward Voltage V F I F = 1A 1. V Clamping Voltage V C I PP = 1A, t = 8/2µ s p 24 V Clamping Voltage V C I PP = 1A, t = 8/2µ s p 33 V Junction Capacitance C j Between I/O pins and Ground = V, f = 1MHz V R 8 1 pf 23 Semtech Corp. 2
Typical Characteristics Non-Repetitive Peak Pulse Power vs. Pulse Time Power Derating Curve PRELIMINARY Peak Pulse Power - Ppk (kw) 1.1.1.1 1 Pulse Duration - t p (µs) % of Rated Power or IPP 1 9 8 7 6 4 3 2 2 7 12 1 Ambient Temperature - T A ( o C) Pulse Waveform Clamping Voltage vs. Peak Pulse Current Percent of IPP 1 9 8 7 6 4 3 2 e - td = I PP /2 Waveform Parameters: tr = 8µs td = 2µs Clamping Voltage - VC (V) 3 3 2 2 1 Waveform Parameters: tr = 8µs td = 2µs 1 2 2 3 Time (µs) Capacitance vs. Reverse Voltage 1 2 2 Peak Pulse Current - I PP (A) Forward Voltage vs. Forward Current 9 9 Capacitance - C j (pf) 8. 8 7. f= 1 M H z Forward Voltage - VF (V) 8 7 6 4 3 2 1 Waveform Parameters: tr = 8µs td = 2µs 7 1 2 2 3 3 4 4 1 2 3 4 6 7 8 9 1 11 12 Reverse Voltage - V R (V) Forward Current - I F (A) 23 Semtech Corp. 3
Applications Information Device Connection for Protection of High-Speed Data Lines The is designed to protect high-speed data lines from transient over-voltages which result from lightning and ESD. The device is designed to protect one unidirectional line in common mode (Line-to- Ground). For common mode protection, The signal is input at pins 2 and 3. Pins 1 and 4 are connected to ground. The ground connection should be made directly to the ground plane for best results. ADSL Protection Figure 2 shows a typical ADSL schematic diagram with the configured to provide lightning and ESD protection for the sensitive ADSL line driver. The is connected from each line to ground on the IC side of the line. The should to be grounded to the system ground to provide a proper reference. Line In 1 4 2 3 Line Out Figure 1 - Connection for Common Mode Protection (Line-to-Ground) +1 +1 Figure 2 - ADSL Protection Circuit 23 Semtech Corp. 4
Outline Drawing - SOT-143 PRELIMINARY Notes: (1) Controlling dimension: Inch (unless otherwise specified). (2) Dimension A and B do not include mold protrusions. Mold protrusions are.6 max. Land Pattern - SOT-143 23 Semtech Corp.
Marking Codes Part Number Marking Code 1U Ordering Information Part Number Working Voltage Qty per Reel Reel Size.TC 1V 3, 7 Inch Contact Information Semtech Corporation Protection Products Division 2 Flynn Road, Camarillo, CA 9312 Phone: (8)498-2111 FAX (8)498-384 23 Semtech Corp. 6