RCLAMP0542T SEMTECH | Alldatasheet
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Technical content
1 www.semtech.com RClamp0542T 2-Line ESD Protection PROTECTION PRODUCTS - RailClamp ®®®®® Description Features Circuit Diagram PIN Configuration Revision 4/1/2010
Applications
Mechanical Characteristics 10GBASE-T Ethernet 10/100/1000 Ethernet SATA USB 3.0 HDMI 1.4 Transient protection for high-speed data lines to IEC 61000-4-2 (ESD) ±18kV (air), ±12kV (contact) IEC 61000-4-4 (EFT) 40A (5/50ns) Array of surge rated diodes with internal TVS Diode Small package saves board space Protects up to 6-Lines operating at 5V Low capacitance: 0.25pF typical (I/O to I/O) Low leakage current Low clamping voltage Innovative package for easy pcb layout Solid-state silicon-avalanche technology SLP1610P4T 6-pin package Pb-Free, Halogen Free, RoHS/WEEE Compliant Nominal Dimensions: 1.6 x 1.0 x 0.40 mm Lead Finish: NiPdAu Molding compound flammability rating: UL 94V-0 Marking: Marking code Packaging: Tape and Reel SLP1610P4T (Bottom View) RailClamp® TVS diode arrays are specifically designed to protect sensitive components which are connected to high-speed data and transmission lines from over- voltage caused by ESD (electrostatic discharge), CDE (Cable Discharge Events), and EFT (electrical fast transients). The RClamp ®0542T has a typical capacitance of only 0.25pF between I/O pins. This allows it to be used on circuits operating in excess of 3GHz without signal attenuation. These devices are constructed using Semtech’s proprietary RailClamp process technology. This technology yields superior electrical characteristics including reduced leakage current (IR), a key require- ment for high-speed interfaces. As such, the RClamp0542T has a maximum IR of only 50nA at 5 volts. The RClamp0542T is in a 6-pin SLP1610P4T package. It measures 1.6 x 1.0 x 0.4mm. The leads are spaced at a pitch of 0.5mm and are finished with lead-free NiPdAu. They are designed for easy PCB layout by allowing the traces to run straight through the device. They may be used to meet the ESD immunity requirements of IEC 61000-4-2. Each device is designed to protect two lines (one differential pair). The combination of small size, low capacitance, low leakage current, and high level of ESD protection makes them a flexible solution for protection of next generation interfaces including 10Gigabit Ethernet, HDMI 1.4, and USB 3.0. Pin 1 Pin 2 3, 4 65 4 12 3
2© 2010 Semtech Corp. www.semtech.com PROTECTION PRODUCTS RClamp0542T Absolute Maximum Rating retemaraPl obmySs noitidnoCm uminiMl acipyTm umixaMs tinU egatloVffO-dnatSesreveRV MWR DNGotO/IynA5 V egatloVnwodkaerBesreveRV RB It ,Am1= DNGotO/IynA 5.681 1V tnerruCegakaeLesreveRI R V MWR ,V0.5= DNGotO/IynA 500.00 50.0A μ egatloVdrawroFV F If Am51= DNGotO/IynA 6.02 .1V egatloVgnipmalCV C I PP sμ02/8=pt,A1= DNGotO/IynA 21V egatloVgnipmalCV C I PP sμ02/8=pt,A5= DNGotO/IynA 51V ecnaticapaCnoitcnuJC j VR ,zHM1=f,V0= DNGotO/IynA 54.00 6.0F p VR ,zHM1=f,V0= snipO/IneewteB 52.04 .0F p Electrical Characteristics (T = 25 oC) gnitaRl obmySe ulaVs tinU )sμ02/8=pt(rewoPesluPkaePP kp 57s ttaW )sμ02/8=pt(tnerruCesluPkaePI PP 5A )riA(2-4-00016CEIrepDSE )tcatnoC(2-4-00016CEIrepDSE V DSE 81-/+ 21-/+ Vk erutarepmeTgnitarepOT J 521+ot55-C ° erutarepmeTegarotST GTS 051+ot55-C °
3© 2010 Semtech Corp. www.semtech.com PROTECTION PRODUCTS RClamp0542T Typical Characteristics Non-Repetitive Peak Pulse Power vs. Pulse Time Pulse Waveform 100 110 0 5 10 15 20 25 30 Time (µs) Percent of I PP e-t td = IPP/2 Waveform Parameters: tr = 8µs td = 20µs Normalized Capacitance vs. Reverse Voltage 0.2 0.4 0.6 0.8 1.2 1.4 1.6 1.8 012345 Reverse Voltage - VR (V) CJ(VR) / CJ(VR=0) f = 1MHz 0123456 Peak Pulse Current - I PP (A) Clamping Voltage - VC (V) Waveform Parameters: tr = 8µs td = 20µs Clamping Voltage vs. Peak Pulse Current 0.01 0.1 0.1 1 10 100 Pulse Duration - tp (us) Peak Pulse Power - PPP (kW) ESD Clamping (Any I/O to GND) (+8kV Contact per IEC 61000-4-2) Note: Data is taken with a 10x attenuator
4© 2010 Semtech Corp. www.semtech.com PROTECTION PRODUCTS RClamp0542T Typical Characteristics Insertion Loss S21 - I/O to I/O 1 2 3 4 START . 030 MHz 3 STOP 000 . 000 000 MHz CH1 S21 LOG 6 dB / REF 0 dB 1: -0.0715 dB
800 MHz
2: -0.0442 dB
900 MHz
3: -0.4690 dB
1.8 GHz
4: -0.5150 dB
2.5 GHz
-6 dB -12 dB -18 dB -24 dB -30 dB -36 dB GHz 100 MHz GHz MHz MHz -42 dB -48 dB Insertion Loss S21 - I/O to GND 1 2 3 4 START . 030 MHz 3 STOP 000 . 000 000 MHz CH1 S21 LOG 6 dB / REF 0 dB 1: -0.2214 dB 2: -0.2095 dB 3: -0.6419 dB 4: -0.2029 dB -6 dB -12 dB -18 dB -24 dB -30 dB -36 dB GHz 100 MHz GHz MHz MHz -42 dB -48 dB
6© 2010 Semtech Corp. www.semtech.com PROTECTION PRODUCTS RClamp0542T Applications Information Figure 4 - USB 3.0 Protection Example (Standard Type A Receptacle) Figure 5 - USB 3.0 Protection Example (Standard micro Type A and AB Receptacle) Pin 1 Pin 5 Pin 6 Pin 10 Pin 1 Pin 5 Pin 6 Pin 10 GND RClamp0542T (2 each) GND GND RClamp1624T GND GND
9 SSTx+
USB3.0 Standard A Receptacle uClamp0511T RClamp0542T
7© 2010 Semtech Corp. www.semtech.com PROTECTION PRODUCTS RClamp0542T Figure 5 - 10GBaseT Protection Example Applications Information 10GbaseT Ethernet Protection When designing Ethernet protection, the entire system must be considered. An Ethernet port includes interface magnetics in the form of transformers and common mode chokes. Transformers and chokes can be discrete components, but integrated solutions that include the RJ-45 connector, resistors, capacitors, and protection are also available. In either case, the transformer will provide a high level of common mode isolation to external voltages, but no protection for metallic (line-to-line) surges. During a metallic transient event, current will flow into one line, through the transformer and back to the source. As the current flows, it charges the windings of the transformer on the line side. Once the surge is removed, the windings on the line side will stop charging and will transfer its stored energy to the IC side where the PHY is located. The magnitude and duration of the surge is attenuated by the inductance of the magnetics. The amount of attenuation will vary by vendor and configuration of the magnetics. It is this transferred energy that must be clamped by the protection circuitry. A typical protection scheme which utilizes the RClamp0542T is shown in Figure 5. One device is placed across each line pair and is located on the PHY side of the transformer as close to the magnetics as possible. This is done to minimize parasitic inductance and improve clamping performance. Data lines are routed through the device minimizing any discontinuity in the signal path. The ground pins of the RClamp0542T are left unconnected. When connected in this configuration, the RClamp0542T presents a typical capcitance of less than 0.3pF between each line pair. RJ-45 Connector 10GBASE-T Ethernet PHY TP2+ TP2- TP3+ TP3- TP4+ TP4- TP1+ TP1- RClamp0542T RClamp0542T RJ-45 Connector 10GBASE-T Ethernet PHY TP2+ TP2- TP3+ TP3- TP4+ TP4- TP1+ TP1- RClamp0542T RClamp0542T
8© 2010 Semtech Corp. www.semtech.com PROTECTION PRODUCTS RClamp0542T Outline Drawing - SLP1610P4T Land Pattern - SLP1610P4T 2X R0.075
3 PLACES
R0.125 e1 .039 BSC 1.00 BSC A 1.00.039E 1.701.50.067.059 0.90 1.10.043.035 E DA aaa C PIN 1 INDICATOR (LASER MARK) B C SEATING PLANE e N bbb C A B LxNE/2 INCHES .020 BSC b .006 bbb aaa N L e D .012 DIM A MIN 0.00 .015 0.430.30 .004 .003 .015 .063 .017 0.08 0.10 0.38 1.60
0.50 BSC
0.05 0.43 DIMENSIONS MIN 0.00 NOM (.005) .016 .001 MAX .002 .017 NOM 0.37 0.03 (0.13) 0.40 CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). NOTES: THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR NOTES: DIM X Y P G C MILLIMETERSINCHES (0.875) .008 .027 .008 .020 (.034) 0.20 0.675 0.50 0.20 DIMENSIONS COMPANY'S MANUFACTURING GUIDELINES ARE MET. 1.55.061Z X1 .016 0.40 X (Y1) P Y G(C)Z Y1 (.061) (1.55) 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). P1 .039 1.00
9© 2010 Semtech Corp. www.semtech.com PROTECTION PRODUCTS RClamp0542T Contact Information Semtech Corporation Protection Products Division 200 Flynn Rd., Camarillo, CA 93012 Phone: (805)498-2111 FAX (805)498-3804 rebmuNtraP daeL hsiniF repytQ leeR eziSleeR TCT.T2450pmalCRe erFbP0 00,3h cnI7
Ordering Information
Tape and Reel Specification RailClamp and RClamp are marks of Semtech Corporation Device Orientation in Tape Pin 1 in upper left towards sprocket holes Marking epaT htdiW )xaM(,BD 1 DE F K )XAM( P0 P2 P) XAM(TW mm8m m2.4 mm1.0+5.1 )mm0.0- mm5.0 50.0± 01.±057.1 mm 50.0±5.3 mm mm4.2 1.0±0.4 mm 1.0±0.4 mm 50.0±0.2 mm mm4.0 mm0.8 mm3.0+ mm1.0- YW = Date Code Pin 1 Location User Direction of feed 0A0 B0 K PIN 1 INDICATOR 0542T YW