05142 SLVU2.8-4 Only One Name Means ProTek’Tion™ ULTRA LOW CAPACITANCE TVS ARRAY APPLICATIONS ✔ Ethernet - 10/100/1000 Base T ✔ Cellular Phones ✔ Audio/Video Inputs ✔ Personal Digital Assistant (PDA) IEC COMPATIBILITY (EN61000-4) ✔ 61000-4-2 (ESD): Air - 15kV, Contact - 8kV ✔ 61000-4-4 (EFT): 40A - 5/50ns ✔ 61000-4-5 (Surge): 24A, 8/20µs - Level 2(Line-Ground) & Level 3(Line-Line) SO-8 FEATURES ✔ 600 Watts Peak Pulse Power per Line (tp = 8/20µs) ✔ Provides Protection For Two Line Pairs ✔ ESD Protection > 40 kilovolts ✔ LOW LEAKAGE CURRENT < 1.0µA ✔ ULTRA LOW CAPACITANCE: 3pF Typical MECHANICAL CHARACTERISTICS ✔ Molded JEDEC SO-8 ✔ Weight 0.6 grams (Approximate) ✔ Flammability rating UL 94V-0 ✔ 12mm Tape and Reel Per EIA Standard 481 ✔ Device Marking: Marking Code, Logo, Date Code & Pin One Defined By DOT on Package PIN CONFIGURATION 05142.R8 9/03 8 7 6 5 1 2 3 4 1 www.protekdevices.com SLVU2.8-4 DEVICE CHARACTERISTICS MAXIMUM RATINGS @ 25°C Unless Otherwise Specified SYMBOL VALUE UNITS Peak Pulse Power (tp = 8/20µs) - See Figure 1 PPP 600 Watts Peak Pulse Current (tp = 8/20µs) IPP 30 Amps I FRM 260°C (10s) °C TJ -55°C to 150°C °C TSTG -55°C to 150°C °C PARAMETER Lead Soldering Temperature Operating Temperature Storage Temperature ELECTRICAL CHARACTERISTICS PER LINE @ 25°C Unless Otherwise Specified PART NUMBER SLVU2.8-4 DEVICE MARKING CODE SL4 RATED STAND-OFF VOLTAGE (See Note 1) MINIMUM BREAKDOWN VOLTAGE (See Note 1) MINIMUM SNAPBACK VOLTAGE (See Note 1) MAXIMUM CLAMPING VOLTAGE (See Note 1) (See Fig. 2) MAXIMUM CLAMPING VOLTAGE (See Note 1) (See Fig. 2) MAXIMUM CLAMPING VOLTAGE (See Note 1) (See Fig. 2) MAXIMUM CLAMPING VOLTAGE (See Note 1) (See Fig. 2) MAXIMUM LEAKAGE CURRENT (See Note 1) TYPICAL CAPACITANCE (See Note 1) VWM VOLTS @ 1mA V(BR) VOLTS @ISB = 50mA VSB VOLTS @IP = 2A VC VOLTS @IP = 5A VC VOLTS @IP = 24A VC VOLTS @IP = 30A VC VOLTS @VWM ID µA @0V, 1MHz C pF 2.8 3.0 2.8 5.5 8.5 15 21 1.0 3 Note 1: Device measured between pin 1 to 2, pin 3 to 4, pin 5 to 6 and pin 7 to 8. 05142.R8 9/03 2 www.protekdevices.com SLVU2.8-4 GRAPHS FIGURE 1 PEAK PULSE POWER VS PULSE TIME PPP - Peak Pulse Current - Watts 10,000 600W, 8/20µs Waveform 1,000 100 10 0.01 1 10 100 td - Pulse Duration - µs 10,000 FIGURE 2 PULSE WAVE FORM 120 IPP - Peak Pulse Current - % of IPP 1,000 tf 100 TEST WAVEFORM PARAMETERS tf = 8µs td = 20µs Peak Value IPP 80 e-t 60 40 td = t I /2 PP 20 0 0 10 15 t - Time - µs FIGURE 3 POWER DERATING CURVE 100 VC - Clamping Voltage - V 60 40 20 Average Power 0 0 05142.R8 9/03 25 50 75 100 125 TL - Lead Temperature - °C 20 25 30 FIGURE 4 Typical Clamping Voltage vs Peak Pulse Current 20 Peak Pulse Power 8/20µs 80 % Of Rated Power 5 PIN 2 TO 1 16 12 8 4 0 150 3 PIN 3 TO 1 0 5 10 15 20 25 IPP - Peak Pulse Current A 30 www.protekdevices.com SLVU2.8-4 APPLICATION NOTE Electronic equipment is susceptible to damage caused by Electrostatic Discharge (ESD), Electrical Fast Transients (EFT), and tertiary lightning effects. Knowing that equipment can be damaged, the SLVU2.8-4 was designed to provide the level of protection required to safe guard sensitive equipment. This product can be used in different configurations to provide a level of protection to meet unidirectional line requirements as well as bidirectional requirements either in a common-mode or differential-mode configuration. UNIDIRECTIONAL DIFFERENTIAL-MODE CONFIGURATION (Figure 1) Figure 1. Unidirectional Differential-Mode Protection The SLVU2.8-4 provides up to four lines of protection in a differenital-mode configuration as depicted in figure 1. Circuit connectivity is as follows: ✔ Line 1 is connected to Pin 1 ✔ Line 2 is connected to Pin 7 ✔ Line 3 is connected to Pin 3 ✔ Line 4 is connected to Pin 5 ✔ Pins 2, 4, 7 and 8 are connected to ground BIDIRECTIONAL COMMON-MODE CONFIGURATION (Figure 2) The SLVU2.8-4 provides up to two lines of protection in a common-mode configuration as depicted in figure 1. Circuit connectivity is as follows: ✔ Line 1 is connected to Pins 1 & 8 ✔ Line 2 is connected to Pins 4 & 5 ✔ Pins 2, 3, 6, and 7 are connected to ground External diode to ground is a low capacitance diode of less than 10pF BIDIRECTIONAL DIFFERENTIAL-MODE CONFIGURATION (Figure 3) The SLVU2.8-4 provides up to two-line pairs of protection in a differenital-mode configuration as depicted in figure 1. Figure 2. Bidirectional Common-Mode Protection Circuit connectivity is as follows: ✔ Line Pair 1 is connected to Pins ✔ Line Pair 1 is connected to Pins ✔ Line Pair 2 is connected to Pins ✔ Line Pair 2 is connected to Pins 1 7 3 5 & & & & 2 8 4 6 CIRCUIT BOARD LAYOUT RECOMMENDATIONS Circuit board layout is critical for Electromagnetic Compatibility (EMC) protection. The following guidelines are recommended: ✔ The protection device should be placed near the input terminals or connectors, the device will divert the transient current immediately before it can be coupled into the nearby traces. ✔ The path length between the TVS device and the protected line should be minimized. ✔ All conductive loops including power and ground loops should be minimized. ✔ The transient current return path to ground should be kept as short as possible to reduce parasitic inductance. ✔ Ground planes should be used whenever possible. For multilayer PCBs, use ground vias. 05142.R8 9/03 Figure 3. Bidirectional Differential-Mode Protection 4 www.protekdevices.com SLVU2.8-4 PACKAGE OUTLINE & DIMENSIONS PACKAGE OUTLINE SO-8 -A- 8 5 -B- 0.010” (0.25 MM) P M B M 4 PL 1 PACKAGE DIMENSIONS 4 DIM D G C R X 45º 0º - 10º -TJ K 0.010” (0.25 MM) M T B S F A S 8 PL 4.80 3.80 1.35 0.35 0.40 1.27 BSC 0.18 0.10 5.80 0.25 INCHES MIN MAX 5.00 0.189 0.196 4.00 0.150 0.157 1.75 0.054 0.068 0.49 0.014 0.019 1.250 0.016 0.049 1.27 BSC 0.05 BSC 0.05 BSC 0.25 0.007 0.009 0.25 0.004 0.008 6.20 0.229 0.244 0.50 0.010 0.019 NOTES MOUNTING PAD 0.050” ± 0.005” A B C D F G J K P R MILLIMETERS MIN MAX 1. - T - = Seating Plane and Datum Surface. 2. Dimensions “A” and “B” are Datum. 3. Dimensions “A” and “B” do not include mold protrusion. 4. Maximum mold protrusion is 0.015” (0.380 mm) per side. 5. Dimensioning and tolerances per ANSI Y14.5M, 1982. 6. Dimensions are exclusive of mold flash and metal burrs. 0.030” ± 0.005” TAPE & REEL/BULK ORDERING NOMENCLATURE 0.160” ± 0.005” 1. Surface mount product is taped and reeled in accordance with EIA-481. 2. Suffix-T7 = 7 Inch Reel - 1,000 pieces per 12mm tape, i.e., SLVU2.8-4-T7. 3. Suffix-T13 = 13 Inch Reel - 2,500 pieces per 12mm tape, i.e., SLVU2.8-4-T13. 4. No Suffix = Product Shipped in Tubes of 98 pcs per Tube. 0.245” MIN 0.045” ± 0.005” Outline & Dimensions: Rev 1 - 11/01, 06009 COPYRIGHT © ProTek Devices 2003 SPECIFICATIONS: ProTek reserves the right to change the electrical and or mechanical characteristics described herein without notice (except JEDEC). ProTek Devices 2929 South Fair Lane, Tempe, AZ 85282 Tel: 602-431-8101 Fax: 602-431-2288 E-Mail: [email protected] Web Site: www.protekdevices.com DESIGN CHANGES: ProTek reserves the right to discontinue product lines without notice, and that the final judgement concerning selection and specifications is the buyer’s and that in furnishing engineering and technical assistance, ProTek assumes no responsibility with respect to the selection or specifications of such products. 05142.R8 9/03 5 www.protekdevices.com