RClamp(R)1521PQ Ultra-Low Capacitance 1-Line ESD Protection PROTECTION PRODUCTS - RailClamp(R) Description Features u Transient protection for data lines to The RailClamp family is a series of ultra low capacitance Transient Voltage Suppressors (TVS) designed to protect high speed data interfaces. This series has been specifically designed to protect sensitive components which are connected to high-speed data and transmission lines from overvoltage caused by ESD (electrostatic discharge), CDE (Cable Discharge Events), and EFT (electrical fast transients). The RClamp(R)1521PQ has a maximum capacitance of only 0.5pF. This allows it to be used on circuits operating in excess of 3GHz without signal attenuation. They may be used to meet the ESD immunity requirements of IEC 61000-4-2, Level 4 (15kV air, 8kV contact discharge). The RClamp1521PQ is in a 2-pin, RoHS/WEEE compliant, SLP1006P2 package measuring 1.0 x 0.6 x 0.5mm. The leads are spaced at a pitch of 0.65mm and feature a lead-free finish. Each device will protect one highspeed line operating at 15 volts. It gives the designer the flexibility to protect single lines in applications where arrays are not practical. The combination of small size, low capacitance, and high ESD surge capability makes them ideal for use in applications such as cellular phones and high-power USB. The RClamp1521PQ is qualified to AEC-Q100 Grade 1 for Automotive use. IEC 61000-4-2 (ESD) 15kV (air), 8kV (contact) IEC 61000-4-4 (EFT) 40A (tp = 5/50ns) Cable Discharge Event (CDE) u u u u u u u Ultra-small package (1.0 x 0.6 x 0.5mm). Protects one data or I/O line. Low capacitance: 0.3pF typical. Low clamping voltage. Low operating voltage: 15V. Solid-state silicon-avalanche technology. AEC-Q100 Grade1 Qualified. Mechanical Characteristics u u u u u u SLP1006P2 package. Molding compound flammability rating: UL 94V-0. Marking: Marking code. Packaging : Tape and Reel. Lead Finish: NiPdAu. RoHS/WEEE Compliant Applications u u u u u Package Dimensions Cellular Handsets & Accessories. USB Ports. PCI Express. Serial ATA. Automotive Applications. Schematic & Pin Configuration #7 7/ 7/7#1%-&-2#2 #1%-&-2%2 Revised 3/15/2013 1 www.semtech.com RClamp1521PQ PROTECTION PRODUCTS Absolute Maximum Ratings Rating Symbol Value Units Peak Pulse Power (tp = 8/20s) PPK 120 W Peak Pulse Current (tp = 8/20s) IPP 4 A ESD per IEC 61000-4-2 (Air) 15 VESD kV ESD per IEC 61000-4-2 (Contact) 8 Operating Temperature Storage Temperature TJ -40 to +125 O TSTG -55 to +150 O C C Electrical Characteristics (T=25OC unless otherwise specified) Parameter Symbol Conditions Min. Reverse Stand-Off Voltage VRWM T = -40 to +125C Reverse Breakdown Voltage VBR It = 1mA T = -40 to +125C Reverse Leakage Current IR Typ. Max. Units 15 V 16.7 V T = 25C 1 T = 125C 5 VRWM = 15V, uA Clamping Voltage VC IPP = 1A, tp = 8/20s 30 V Clamping Voltage VC IPP = 4A, tp = 8/20s 35 V 0.50 pF T = 25C Junction Capacitance CJ VR = 0V, f = 1MHz T = 125C 2013 Semtech Corporation. 0.30 2 1.00 www.semtech.com RClamp1521PQ PROTECTION PRODUCTS Typical Characteristics Non-RepetitivePeak Pulse Power vs. Pulse Time Power Derating Curve 120 10 TA = 25OC % of Rated Power or IPP Peak Pulse Power - PPP (kW) 100 1 0.1 80 60 40 20 DR040512:25:125:150 DR040412-120 0.01 0.1 1 10 100 0 1000 0 25 50 75 100 Ambient Temperature - TA (OC) Pulse Duration - tp (s) Reverse Leakage vs. Temperature 125 150 Reverse Leakage vs. Reverse Voltage 0.20 1.5 TA = 25OC VR = 15V Leakage Current - IR (uA) Leakage Current - IR (uA) 0.15 1.0 0.5 0.10 0.05 AR_IRvT AR_IRvV 0.0 0.00 -50 0 50 Temperature (OC) 100 0 150 5 10 15 Reverse Voltage - VR (V) Capacitance vs. Temperature Breakdown Voltage vs. Temperature 22 2.5 IR = 1mA VR = 15V VR = 0V Breakdown Voltage - VBR (V) Junction Capacitance - CJ (pF) 2.0 1.5 1.0 21 20 19 0.5 AR-BVvT AR_CJvT 18 0.0 -50 0 2013 Semtech Corporation. 50 Temperature (OC) 100 -50 150 0 50 100 150 Temperature (OC) 3 www.semtech.com RClamp1521PQ PROTECTION PRODUCTS Typical Characteristics (Continued) ESD Positive Clamp (8kV Contact per IEC 61000-4-2) ESD Negative Clamp (8kV Contact per IEC 61000-4-2) 400 100 TA = 25OC Corrected for 40dB attenuation. Measured with 50, 40dB attenuator; 50 Scope Input Impedance. 0 Clamping Voltage - VC (V) Clamping Voltage - VC (V) 300 TA = 25OC Corrected for 40dB attenuation. Measured with 50, 40dB attenuator; 50 Scope Input Impedance. 200 100 -100 -200 -300 0 AR_ESD NEG AR_ESD POS -400 -100 -20 0 20 40 Time (ns) 60 80 -20 100 0 20 40 Time (ns) 60 80 100 TLP IV Curve (Typical Either Direction) 30 TLP Current - IDUT (A) TA = 25OC Typical Either Direction 20 RDYN = 1.07 4A to 16A 10 AR_TLP_BI 0 0 10 20 30 40 Clamping Voltage - VC (V) 2013 Semtech Corporation. 50 60 4 www.semtech.com RClamp1521PQ PROTECTION PRODUCTS Applications Information Device Connection Options These low capacitance TVS diodes are designed to provide common mode protection for one high-speed line or differential protection for one line pair. The device is bidirectional and may be used on lines where the signal polarity is positive and negative. Equivalent Circuit Diagram 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: u Place the TVS near the input terminals or connectors to restrict transient coupling. u Minimize the path length between the TVS and the protected line. u Minimize all conductive loops including power and ground loops. u The ESD transient return path to ground should be kept as short as possible. u Never run critical signals near board edges. u Use ground planes whenever possible. 2013 Semtech Corporation. #1%-&-2&2 5 www.semtech.com RClamp1521PQ PROTECTION PRODUCTS Applications Information - Spice Model 4 < % # & % # #1%-&-2,2 ; RClamp1521PQ Spice Model RClamp1521PQ Spice Parameters Parameter Unit D1 (LCRD) D2 (LCRD) D3 (TVS) IS (A) 1.0E-20 1.0E-20 2.0E-12 BV (V) 100 100 19.5 VJ (V) 0.7 0.7 0.6 RS (Ohm) 0.458 0.89 0.8 IBV (A) 1E-3 1E-3 1E-3 CJO (F) 0.4E-12 0.4E-12 56E-12 TT (s) 2.541E-9 2.541E-9 2.541E-9 M -- 0.01 0.01 0.23 N -- 1.1 1.1 1.1 EG (eV) 1.11 1.11 1.11 2013 Semtech Corporation. 6 www.semtech.com RClamp1521PQ PROTECTION PRODUCTS Outline Drawing - {Insert Package Type} % ! "$ "& % %" ! $ " $ %$ & $ $$ $ $$ # $ ! $ % $ " % " $ ! #6%-$(+#+ Land Pattern - {Insert Package Type} ) "" + !$ " % ) + $$ % $$ #6%-$(+%+ ' ) ( )* 2013 Semtech Corporation. ) ( (' ' (' ( ( ( ( ( ) ( ( 7 www.semtech.com RClamp1521PQ PROTECTION PRODUCTS Marking Ordering Information Part Number Qty per Reel Reel Size RClamp1521PQTCT 3000 7 Inch Note: Lead finish is lead-free NiPdAu RailClamp and RClamp are marks of Semtech Corporation. #1%-&-2-2 Tape and Reel Specification ! , : 3" ;: 3 (<= " #< > 6 ) . . ! ? > ! - 1 == ! == , ? !8"9**5!5 @ . ' #1%-&-2/2 A0 B0 K0 B1 D D1 E F K P P0 P2 t W 0.69 0.10 1.19 0.10 0.66 0.10 Not Spec'd 1.50 +0.1 -0.0 Not Spec'd 1.75 0.10 3.50 0.05 Not Spec'd 4.00 0.10 4.00 0.10 2.00 0.05 Not Spec'd 8.0 +0.3 -0.1 Ref KCT00078 Rev0 Contact Information Semtech Corporation Protection Products Division 200 Flynn Rd., Camarillo, CA 93012 Phone: (805)498-2111 FAX (805)498-3804 2013 Semtech Corporation. 8 www.semtech.com RClamp1521PQ PROTECTION PRODUCTS Date Description By 1/8/2013 Raised from PM Document RClamp1521P.pmd Rev 8/22/07 DJR 1/30/2013 Released to PLM as Preliminary DJR 2/1/2013 Corrected p1. date (was 2012); Added High temp. parameters to Electrical Characteristics table. DJR 3/1/2013 Changed 8/20 Clamping voltage. WAS 28V @ 1A; 30V @ 4A: IS 30V @ 1A; 35V @ 4A: Reason necessary for yield. DJR 3/15/2013 Added ESD and TLP Curves, raised to Final; Released to PLM as Final DJR 2013 Semtech Corporation. 9 www.semtech.com