uClamp0508T Low Profile μClampTM 8-Line ESD protection PROTECTION PRODUCTS - MicroClampTM Description Features The μClamp series of TVS arrays are designed to protect sensitive electronics from damage or latch-up due to ESD. It is designed to replace multilayer varistors (MLVs) in portable applications such as cell phones, notebook computers, and other portable electronics. It features large cross-sectional area junctions for conducting high transient currents. TVS diodes offer desirable characteristics for board level protection including fast response time, low operating and clamping voltage, and no device degradation. The μClampTM0508T is in a 8-pin, RoHS/WEEE compliant, SLP1713P8T package. It measures 1.7 x 1.3 mm with a nominal height of only 0.4mm. The leads are spaced at a pitch of 0.4mm and are finished with leadfree NiPdAu. Each device features eight TVS diodes with an operating voltage of 5 volts and a maximum loading capacitance of only 10pF. They may be used to meet the ESD immunity requirements of IEC 61000-4-2, Level 4 (±15kV air, ±8kV contact discharge). The combination of small size and high ESD surge capability makes them ideal for use in portable applications such as cellular phones, digital cameras, and notebook computers. TM Transient protection for data lines to IEC 61000-4-2 (ESD) ±15kV (air), ±8kV (contact) IEC 61000-4-4 (EFT) 40A (tp = 5/50ns) Cable Discharge Event (CDE) Ultra-small package Protects eight data lines Low clamping voltage Working voltage: 5V Low capacitance (10pF) Solid-state silicon-avalanche technology Mechanical Characteristics SLP1713P8T package RoHS/WEEE Compliant Nominal Dimensions: 1.7 x 1.3 x 0.4 mm Lead Finish: NiPdAu Molding compound flammability rating: UL 94V-0 Marking : Marking code Packaging : Tape and Reel Applications Dimensions Cellular Handsets & Accessories Notebooks & Handhelds Micro SD Ports MMC & HS-MMC Ports Portable Instrumentation Digital Cameras Peripherals Schematic 1.70 1 2 3 4 1 2 3 4 5 6 7 8 1.30 8 7 6 5 0.40 BSC Tab 0.40 Nominal Dimensions (mm) (SLP1713P8T Bottom View) Revision 01/07/2008 1 www.semtech.com uClamp0508T PROTECTION PRODUCTS Absolute Maximum Rating R ating Symbol Value Units Peak Pulse Power (tp = 8/20μs) Pp k 25 Watts Maximum Peak Pulse Current (tp = 8/20μs) Ip p 2 Amps VESD +/- 20 +/- 15 kV TJ -55 to +125 °C TSTG -55 to +150 °C ESD p er IEC 61000-4-2 (Air) ESD p er IEC 61000-4-2 (Contact) Op erating Temp erature Storage Temp erature Electrical Characteristics (T=25oC) Parameter Symbol Conditions Reverse Stand-Off Voltage VRWM Reverse Breakdown Voltage V BR It = 1mA Reverse Leakage Current IR VRWM = 5V, T=25°C Forward Voltage VF IF = 10mA Clamp ing Voltage VC Junction Cap acitance Junction Cap acitance © 2008 Semtech Corp. Minimum Typical Maximum Units 5 V 6 V 0.25 μA 1.2 V IPP = 2A, tp = 8/20μs 12.5 V Cj VR = 0V, f = 1MHz 10 pF Cj VR = 3.3V, f = 1MHz 2 1 4.5 pF www.semtech.com uClamp0508T PROTECTION PRODUCTS Typical Characteristics Non-Repetitive Peak Pulse Power vs. Pulse Time Power Derating Curve 110 10 90 % of Rated Power or IPP Peak Pulse Power - PPP (kW) 100 1 0.1 80 70 60 50 40 30 20 10 0 0.01 0.1 1 10 0 100 25 50 75 100 125 150 o Ambient Temperature - TA ( C) Pulse Duration - tp (us) Forward Voltage vs. Forward Current Clamping Voltage vs. Peak Pulse Current 8 15 Forward Voltage - VF V) Clamping Voltage - VC (V) 7 10 5 Waveform Parameters: tr = 8μs td = 20μs 6 5 4 3 Waveform Parameters: tr = 8μs td = 20μs 2 1 0 0 0 0.5 1 1.5 2 2.5 0 3 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Forward Current - IF (A) Peak Pulse Current - IPP (A) Junction Capacitance vs. Reverse Voltage ESD Clamping (8kV Contact per IEC 61000-4-2) 1.1 f = 1 MHz 1 0.9 CJ(VR) / CJ(VR=0) 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 0 1 2 3 Reverse Voltage - VR (V) 4 5 Note: Data is taken with a 10x attenuator © 2008 Semtech Corp. 3 www.semtech.com uClamp0508T PROTECTION PRODUCTS Typical Characteristics Insertion Loss S21 CH1 S21 LOG Analog Crosstalk 6 dB / REF 0 dB CH1 S21 LOG 20 dB /REF 0 dB 1: -3.0037dB 572.149 MHz 2: -5.0581 dB 800.00 MHz 0 dB 3: -5.8299 dB 900.00 MHz 1 -6 dB 2 3 5 -12 dB 4: -23.207 1.80000 GHz -18 dB -24 dB 4 5: -13.452 2.50000 GHz -30 dB -36 dB 1 MHz START. 030 MHz © 2008 Semtech Corp. 10 MHz 100 MHz 3 1 GHz GHz START. 030 MHz STOP 3000. 000000 MHz 4 STOP 3000. 000000 MHz www.semtech.com uClamp0508T PROTECTION PRODUCTS Applications Information Device Connection Options Figure 1 - Circuit Diagram (Eight Each) This device is designed to protect eight data lines. The device is unidirectional and may be used on lines where the signal polarity is above ground. Ground Connection Recommendation Parasitic inductance present in the board layout will affect the filtering and ESD performance of the device. Ground loop inductance can be reduced by using multiple vias to make the connection to the ground plane. Figure 2 shows the recommended device layout. The ground pad vias have a diameter of 0.008 inches (0.20 mm) while the two external vias have a diameter of 0.010 inches (0.250mm). The internal vias are spacedapproximately evenly from the center of the pad. The designer may choose to use more vias with a smaller diameter (such as 0.005 inches or 0.125mm) since changing the diameter of the via will result in little change in inductance. Circuit Board Layout Recommendations for Suppression of ESD. Good circuit board layout is critical for the suppression of ESD induced transients. The following guidelines are recommended: z Place the TVS near the input terminals or connectors to restrict transient coupling. z Minimize the path length between the TVS and the protected line. z Minimize all conductive loops including power and ground loops. z The ESD transient return path to ground should be kept as short as possible. z Never run critical signals near board edges. z Use ground planes whenever possible. © 2008 Semtech Corp. Figure 2 - Recommended Layout using Ground Vias 5 www.semtech.com uClamp0508T PROTECTION PRODUCTS Applications Information - Spice Model uClamp0508T Spice Model uClamp0508T Spice Parameters © 2008 Semtech Corp. Parameter Unit D1 (T VS) IS Amp 2.05e-15 BV Volt 7.0 VJ Volt 0.80 RS Ohm 0.75 IB V Amp 1.0E-3 CJO Farad 9e-12 TT sec 2.541E-9 M -- 0.25 N -- 1.1 EG eV 1.11 6 www.semtech.com uClamp0508T PROTECTION PRODUCTS Outline Drawing - SLP1713P8T A D B DIM PIN 1 INDICATOR (LASER MARK) A A1 A2 b D D1 E E1 e L N aaa bbb E A SEATING PLANE aaa C A2 C A1 DIMENSIONS INCHES MILLIMETERS MIN NOM MAX MIN NOM MAX .015 .016 .017 .000 .001 .002 (.005) .006 .008 .010 .065 .067 .070 .047 .051 .055 .049 .051 .054 .008 .012 .016 .016 BSC .008 .010 .012 8 .003 .004 0.37 0.40 0.43 0.00 0.02 0.05 (0.13) 0.15 0.20 0.25 1.65 1.70 1.78 1.20 1.30 1.40 1.25 1.30 1.38 0.20 0.30 0.40 0.40 BSC 0.20 0.25 0.30 8 0.08 0.10 D1 1 2 LxN E/2 E1 N bxN e/2 bbb C A B e D/2 NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. COPLANARITY APPLIES TO THE EXPOSED PAD AS WELL AS THE TERMINALS. Land Pattern - SLP1713P8T P Z X G DIMENSIONS DIM C G H K P X Y Z H (C) Y INCHES (.050) .027 .012 .055 .016 .008 .023 .073 MILLIMETERS (1.27) 0.69 0.30 1.40 0.40 0.20 0.58 1.85 K NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). 2. THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. 3. THERMAL VIAS IN THE LAND PATTERN OF THE EXPOSED PAD SHALL BE CONNECTED TO A SYSTEM GROUND PLANE. FAILURE TO DO SO MAY COMPROMISE THE THERMAL AND/OR FUNCTIONAL PERFORMANCE OF THE DEVICE. © 2008 Semtech Corp. 7 www.semtech.com uClamp0508T PROTECTION PRODUCTS Marking Code Ordering Information 0508T PIN 1 INDICATOR Part Number Working Voltage Qty per Reel Reel Size uClamp 0508T.TCT 5V 3,000 7 Inch Notes: 1) This is a lead-free, RoHS/WEEE compliant product MicroClamp, uClamp and μClamp are marks of Semtech Corporation YYWW Note: YYWW = Date Code Tape and Reel Specification Pin 1 Location User Direction of feed Device Orientation in Tape A0 1.51 +/-0.10 mm B0 K0 1.91 +/-0.10 mm 0.66 +/-0.10 mm Tape Width B, (Max) D D1 8 mm 4.2 mm (.165) 1.5 + 0.1 mm - 0.0 mm (0.59 +.005 - .000) 0.8 mm ±0.05 (.031) E 1.750±.10 mm (.069±.004) F K (MAX) P P0 P2 T(MAX) W 3.5±0.05 mm (.138±.002) 2.4 mm (.094) 4.0±0.1 mm (.157±.004) 4.0±0.1 mm (.157±.004) 2.0±0.05mm (.079±.002) 0.4 mm (.016) 8.0 mm + 0.3 mm - 0.1 mm (.312±.012) Contact Information Semtech Corporation Protection Products Division 200 Flynn Rd., Camarillo, CA 93012 Phone: (805)498-2111 FAX (805)498-3804 © 2008 Semtech Corp. 8 www.semtech.com