SMS05_04 SEMTECH | Alldatasheet
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1 www.semtech.com PROTECTION PRODUCTS SMS05 through SMS24 TVS Diode Array For ESD and Latch-Up Protection Transient protection for data lines to IEC 61000-4-2 (ESD) ±15kV (air), ±8kV (contact) IEC 61000-4-4 (EFT) 40A (5/50ns) IEC 61000-4-5 (Lightning) 24A (8/20µs) Small package for use in portable electronics Protects four I/O lines Working voltages: 5V, 12V, 15V and 24V Low leakage current Low operating and clamping voltages Solid-state silicon avalanche technology Description Features Circuit Diagram Schematic & PIN Configuration Revision 08/11/04
Applications
Mechanical Characteristics The SMS series of TVS arrays are designed to protect sensitive electronics from damage or latch-up due to ESD and other voltage-induced transient events. Each device will protect up to four lines. They are available with operating voltages of 5V, 12V, 15V and 24V. They are unidirectional devices and may be used on lines where the signal polarities are above ground. TVS diodes are solid-state devices designed specifically for transient suppression. They feature large cross- sectional area junctions for conducting high transient currents. They offer desirable characteristics for board level protection including fast response time, low operating and clamping voltage and no device degrada- tion. The SMS series devices may be used to meet the immunity requirements of IEC 61000-4-2, level 4. The low cost SOT23-6L package makes them ideal for use in portable electronics such as cell phones, PDA’s, and notebook computers. SOT23-6L (Top View) EIAJ SOT23-6L package Molding compound flammability rating: UL 94V-0 Marking : Marking Code Packaging : Tape and Reel per EIA 481 Cell phone Handsets and Accessories Microprocessor Based Equipment Personal Digital Assistants (PDA’s) and Pagers Desktops PC and Servers Notebook, Laptop, and Palmtop Computers Portable Instrumentation Peripherals MP3 Players Cordless Phones
2 2004 Semtech Corp. www.semtech.com PROTECTION PRODUCTSPROTECTION PRODUCTS SMS05 through SMS24 Absolute Maximum Rating
Electrical Characteristics
)sµ02/8=pt(rewoPesluPkaePP kp 053s ttaW )2-4-00016CEIrepMBH(egatloVDSEV DSE 52>V k erutarepmeTgniredloSdaeLT L ).ces01(062C ° erutarepmeTgnitarepOT J 521+ot55-C ° erutarepmeTegarotST GTS 051+ot55-C ° 50SMS retemaraPl obmySs noitidnoCm uminiMl acipyTm umixaMs tinU egatloVffO-dnatSesreveRV MWR 5V egatloVnwodkaerBesreveRV RB It Am1=6 V tnerruCegakaeLesreveRI R V MWR C°52=T,V5=0 2A µ egatloVgnipmalCV C I PP t,A5= p sµ02/8=8 .9V egatloVgnipmalCV C I PP t,A42= p sµ02/8=5 .41V tnerruCesluPkaePI PP tp sµ02/8=4 2A ecnaticapaCnoitcnuJC j dnasniPO/IneewteB dnuorG VR zHM1=f,V0= 5230 04F p 21SMS retemaraPl obmySs noitidnoCm uminiMl acipyTm umixaMs tinU egatloVffO-dnatSesreveRV MWR 21V egatloVnwodkaerBesreveRV RB It Am1=3 .31V tnerruCegakaeLesreveRI R V MWR C°52=T,V21=1 A µ egatloVgnipmalCV C I PP t,A5= p sµ02/8=9 1V egatloVgnipmalCV C I PP t,A51= p sµ02/8=3 2V tnerruCesluPkaePI PP tp sµ02/8=5 1A ecnaticapaCnoitcnuJC j dnasniPO/IneewteB dnuorG VR zHM1=f,V0= 5310 51F p
3 2004 Semtech Corp. www.semtech.com PROTECTION PRODUCTSPROTECTION PRODUCTS SMS05 through SMS24 51SMS retemaraPl obmySs noitidnoCm uminiMl acipyTm umixaMs tinU egatloVffO-dnatSesreveRV MWR 51V egatloVnwodkaerBesreveRV RB It Am1=7 .61V tnerruCegakaeLesreveRI R V MWR C°52=T,V51=1 A µ egatloVgnipmalCV C I PP t,A5= p sµ02/8=4 2V egatloVgnipmalCV C I PP t,A21= p sµ02/8=9 2V tnerruCesluPkaePI PP tp sµ02/8=2 1A ecnaticapaCnoitcnuJC j dnasniPO/IneewteB dnuorG VR zHM1=f,V0= 0015 21F p Electrical Characteristics (Continued) 42SMS retemaraPl obmySs noitidnoCm uminiMl acipyTm umixaMs tinU egatloVffO-dnatSesreveRV MWR 42V egatloVnwodkaerBesreveRV RB It Am1=7 .62V tnerruCegakaeLesreveRI R V MWR C°52=T,V42=1 A µ egatloVgnipmalCV C I PP t,A5= p sµ02/8=0 4V egatloVgnipmalCV C I PP t,A8= p sµ02/8=4 4V tnerruCesluPkaePI PP tp sµ02/8=8 A ecnaticapaCnoitcnuJC j dnasniPO/IneewteB dnuorG VR zHM1=f,V0= 065 7F p
4 2004 Semtech Corp. www.semtech.com PROTECTION PRODUCTSPROTECTION PRODUCTS SMS05 through SMS24 Typical Characteristics Non-Repetitive Peak Pulse Power vs. Pulse Time Power Derating Curve 100 110 0 5 10 15 20 25 30 Time (µs) Percent of IPP e td = IPP/2 Waveform Parameters: tr = 8µs td = 20µs Pulse Waveform Forward Voltage vs. Forward Current 100 110 0 25 50 75 100 125 150 Ambient Temperature - T A (oC) % of Rated Power or IPP Clamping Voltage vs. Peak Pulse Current 0.5 1.5 2.5 3.5 4.5 0 5 10 15 20 25 30 35 40 45 Forward Current - IF (A) Forward Voltage - VF (V) Waveform Parameters: tr = 8µs td = 20µs 0 5 10 15 20 25 30 Peak Pulse Current - IPP (A) Clamping Voltage - VC (V) SMS12 SMS05 Waveform Parameters: tr = 8µs td = 20µs SMS15 SMS24 0.01 0.1 0.1 1 10 100 1000 Pulse Duration - tp (µs) Peak Pulse Power - Ppk (kW)
5 2004 Semtech Corp. www.semtech.com PROTECTION PRODUCTSPROTECTION PRODUCTS SMS05 through SMS24 SMSxx Circuit Diagram Protection of Four Unidirectional Lines Device Connection for Protection of Four Data Lines The SMSxx is designed to protect up to four unidirec- tional data lines. The device is connected as follows: 1. Unidirectional protection of four I/O lines is achieved by connecting pins 1, 3, 4 and 6 to the data lines. Pin 2 and 5 are connected to ground. The ground connections should be made directly to the ground plane for best results. The path length is kept as short as possible to reduce the effects of parasitic inductance in the board traces. Circuit Board Layout Recommendations for Suppres- sion of ESD Good circuit board layout is critical for the suppression of ESD induced transients. The following guidelines are recommended: z Place the SMSxx near the input terminals or con- nectors to restrict transient coupling. z Minimize the path length between the SMSxx 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. Matte Tin Lead Finish Matte tin has become the industry standard lead-free replacement for SnPb lead finishes. A matte tin finish is composed of 100% tin solder with large grains. Since the solder volume on the leads is small com- pared to the solder paste volume that is placed on the land pattern of the PCB, the reflow profile will be determined by the requirements of the solder paste. Therefore, these devices are compatible with both lead-free and SnPb assembly techniques. In addition, unlike other lead-free compositions, matte tin does not have any added alloys that can cause degradation of the solder joint. Applications Information
6 2004 Semtech Corp. www.semtech.com PROTECTION PRODUCTSPROTECTION PRODUCTS SMS05 through SMS24 Outline Drawing - SO-8 Land Pattern -SOT23 6L Outline Drawing -SOT23 6L .110 BSC .037 BSC DETAIL aaa C SEATING ccc C 2X N/2 TIPS 2X E/2 SEE DETAIL AA2 bxN A .008 N E .060 .114 .063 .118 .010 - A 0.20 1.60 3.00
2.80 BSC
0.95 BSC
.069 1.50 2.90 .020 0.25 1.75 0.50- EI L (L1) c 0.25 PLANE GAGE H 2.80.110 bbb C A-B D .008 .004 .012 .003 (.024) .018 .035 .000 .035 .045 0.10 0.20 10° 0° - 10° 1.15 (0.60) 0.45.024 .009 0.30 0.08 .057 .051 .006 0.00 .90 0.90 0.22 0.60 0.15 1.45 1.30 1.90 BSC.075 BSC A e1 D e B C H NOM INCHES DIMENSIONS aaa bbb ccc N DIM c e L E D b A MIN MILLIMETERS MAX MIN NOM MAX PLANE D DATUMS AND TO BE DETERMINED AT DATUM PLANE CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). DIMENSIONS "E1" AND "D" DO NOT INCLUDE MOLD FLASH, PROTRUSIONS3. OR GATE BURRS. NOTES: 2. -A- -B- -H- SIDE VIEW THIS LAND PATTERN IS FOR REFERENCE PURPOSES ONLY. CONSULT YOUR MANUFACTURING GROUP TO ENSURE YOUR COMPANY'S MANUFACTURING GUIDELINES ARE MET. NOTES: DIMENSIONS INCHES Y Z DIM G P X C MILLIMETERS .043 .141 .055 (.098) .037 .024 1.40 (2.50) 0.95 0.60 1.10 3.60 DIMENSIONS INCHES Y Z DIM G P X C MILLIMETERS P (C) Z Y G X
7 2004 Semtech Corp. www.semtech.com PROTECTION PRODUCTSPROTECTION PRODUCTS SMS05 through SMS24 Contact Information Semtech Corporation Protection Products Division
200 Flynn Road, Camarillo, CA 93012
Phone: (805)498-2111 FAX (805)498-3804 Note: (1) No suffix indicates tube pack. Marking Codes
Ordering Information
CT.50SMSb PnS0 00,3h cnI7 CT.21SMSb PnS0 00,3h cnI7 CT.51SMSb PnS0 00,3h cnI7 CT.42SMSb PnS0 00,3h cnI7 TCT.50SMSe erFbP0 00,3h cnI7 TCT.21SMSe erFbP0 00,3h cnI7 TCT.51SMSe erFbP0 00,3h cnI7 TCT.42SMSe erFbP0 00,3h cnI7