TClamp1202P Low Capacitance TClamp® Surge Protection for 12V Interfaces PROTECTION PRODUCTS - TransClamp® Description PRELIMINARY Features TClamp 1202P provides dedicated surge and ESD protection for RS-485 and other 12V lines in industrial applications. It features high surge current capability of 100A (tp=8/20us) and low clamping voltage making them ideal for use in harsh transient environments. This device is designed to replace mulitple discrete components by integrating low capacitance, surgerated compensation diodes with a high power transient voltage suppressor (TVS). Capacitance is limited to 12pF maximum to ensure correct signal transmission on high-speed lines. Each TClamp1202P may be used to protect up to two lines. A voltage bus operating up to 12V can also be optionally protected. The TClamp1202P is in a 5-pin SLP2020P5 package, measuring 2.0 x 2.0mm with a nominal height of 0.60mm. The flow- through package design simplifies PCB layout. ® Transient protection for high-speed data lines to IEC 61000-4-2 (ESD) 20kV (air), 15kV (contact) IEC 61000-4-4 (EFT) 40A (5/50ns) IEC 61000-4-5 (Lightning) 100A (8/20μs) Array of surge rated diodes with internal TVS Diode Protects up to two lines Low capacitance: (<12pF) Operating voltage: 12V Low leakage current Solid-state silicon-avalanche technology Mechanical Characteristics SLP2020P5 Package Pb-Free, Halogen Free, RoHS/WEEE Compliant Lead Finish: NiPdAu Molding Compound Flammability Rating: UL 94V-0 Marking : Marking code + Date Code Packaging : Tape and Reel Applications Functional Circuit Diagram Package Configuration 2.00 1 2 Pin 2 2.00 12V Pin 1 RS-485 Surge Protection RS-422 Surge Protection Industrial Equipment Remote Meter Readers Automatic Teller Machines Digital Surveillance Cameras CAN-bus Pin 3 0.60 Pin 4, 5, Tab Revision 5/27/2015 Nominal Dimensions in mm (Bottom View) 1 www.semtech.com TClamp1202P PRELIMINARY PROTECTION PRODUCTS Absolute Maximum Rating R ating Symbol Value Units Peak Pulse Power (tp = 10/1000μs), T=25°C Pp k 300 Watts Peak Pulse Current (tp = 10/1000 μs), T=25°C IP P 12 A Peak Pulse Current (tp = 8/20μs), T=25°C IP P 100 A VESD +/- 20 +/- 15 kV TJ -55 to +125 °C TSTG -55 to +150 °C ESD per IEC 61000-4-2 (Air)1 ESD per IEC 61000-4-2 (Contact)1 Operating Temperature Storage Temperature Electrical Characteristics (T=25oC unless otherwise specified) Parameter Symbol Conditions Minimum Typical Maximum Units 12 V 18.5 V Reverse Stand-Off Voltage VRWM Reverse Breakdown Voltage V BR It = 1mA Pins 1, 2 or 3 to pins 4, 5, and Tab5 Reverse Leakage Current IR VRWM = 12V, T=25°C Pins 1, 2 or 3 to pins 4, 5, and Tab5 0.100 μA Reverse Leakage Current IR VRWM = 12V, T=125°C Pins 1, 2 or 3 to pins 4, 5, and Tab5 0.500 μA RDYN tlp = 0.2 / 100ns Pin 1 and 3 Clamping Voltage4 VC IPP = 12A, tp = 10/1000μs Pins 1, 2 or 3 to pins 4, 5, and Tab5 25 V Clamping Voltage4 VC IPP = 100A, tp = 8/20μs Pins 1, 2 or 3 to pins 4, 5, and Tab5 40 V Junction Capacitance4 Cj Pin 1 or 3 to pins 4, 5, and Tab5 VR = 0V, f = 1MHz 12 pF Dynamic Resistance2, 3 13.3 15 0.11 Ohms Notes 1)ESD gun return path connected to ESD ground reference plane. 2)Transmission Line Pulse Test (TLP) Settings: tp = 100ns, tr = 0.2ns, ITLP and VTLP averaging window: t1 = 70ns to t2 = 90ns. 3) Dynamic resistance calculated from Ipp = 4A to Ipp = 16A 4)Guaranteed by design. Not production tested. 5)Pins 4, 5 and center tab are internally connected © 2015 Semtech Corporation 2 www.semtech.com TClamp1202P PRELIMINARY PROTECTION PRODUCTS Typical Characteristics Non-Repetitive Peak Pulse Power vs. Pulse Time (VBus Pin 1) Capacitance vs. Reverse Voltage (Data Line Pins 1 and 3) 100 14 Junction Capacitance - CJ (pF) Peak Pulse Power - PPP (kW) TA = 25OC 10 1 12 10 8 6 4 2 f = 1 MHz 0 0 0.1 0.1 1 10 100 2 4 6 8 10 12 14 Reverse Voltage - VR (V) 1000 Pulse Duration - tp (µs) Clamping Voltage vs. Peak Pulse Current (10/1000us Pulse Waveform) Clamping Voltage vs. Peak Pulse Current (8/20us Pulse Waveform) 40 35 TX/RX (Pins 1 and 3) 20 Clamping Voltage - VC (V) Clamping Voltage - VC (V) 25 VBus (Pin 2) 15 10 Waveform Parameters: tr = 10µs td = 1000µs 5 TX/RX (Pins 1 and 3) 30 25 VBus (Pin 2) 20 15 10 Waveform Parameters: tr = 8µs td = 20µs 5 0 0 0 2 4 6 8 10 12 14 0 20 Peak Pulse Current - IPP (A) Forward Voltage vs. Peak Pulse Current (8/20us Pulse Waveform) 60 80 100 120 TLP Characteristic (Data Line Pins 1 and 3) 35 12 Transmission Line Pulse Test (TLP) Settings: tp = 100ns, tr = 0.2ns, ITLP and VTLP averaging window: t1 = 70ns to t2 = 90ns 30 10 TX/RX (Pins 1 and 3) TLP Current (A) Forward Voltage - V F (V) 40 Peak Pulse Current - IPP (A) 8 6 4 25 20 15 10 2 5 0 0 0 20 40 60 80 100 120 0 Peak Pulse Current - IPP (A) © 2015 Semtech Corporation 5 10 15 20 25 TLP Voltage (V) 3 www.semtech.com TClamp1202P PRELIMINARY PROTECTION PRODUCTS Typical Characteristics ESD Clamping (+8kV Contact per IEC 61000-4-2) (Data Line Pins 1 and 3) ESD Clamping (-8kV Contact per IEC 61000-4-2) (Data Line Pins 1 and 3) 160 10 Measured with 50 Ohm scope input impedance, 2GHz bandwidth. Corrected for 50 Ohm, 20dB attenuator. ESD gun return path connected to ESD ground plane 140 120 -10 -30 Voltage (V) Voltage (V) 100 80 60 -50 -70 40 -90 20 -110 0 -130 -20 Measured with 50 Ohm scope input impedance, 2GHz bandwidth. Corrected for 50 Ohm, 20dB attenuator. ESD gun return path connected to ESD ground plane -150 -10 0 10 20 30 40 50 60 70 -10 80 0 10 20 ESD Clamping (+8kV Contact per IEC 61000-4-2) (VBus Pin 2) 40 50 60 70 80 ESD Clamping (-8kV Contact per IEC 61000-4-2) (VBus Pin 2) 20 100 Measured with 50 Ohm scope input impedance, 2GHz bandwidth. Corrected for 50 Ohm, 20dB attenuator. ESD gun return path connected to ESD ground plane 90 80 70 0 -20 60 Voltage (V) Voltage (V) 30 Time (ns) Time (ns) 50 40 30 -40 -60 20 10 Measured with 50 Ohm scope input impedance, 2GHz bandwidth. Corrected for 50 Ohm, 20dB attenuator. ESD gun return path connected to ESD ground plane -80 0 -100 -10 -10 0 10 20 30 40 50 60 70 -10 80 0 10 LOG 30 40 50 60 70 80 Analog Crosstalk (Pin 1 to 3) Typical Insertion Loss S21 (Data Line Pins 1 and 3) CH1 S21 20 Time (ns) Time (ns) CH1 S21 6 dB / REF 0 dB LOG 20dB /REF 0 dB 1: - 7.4634 dB 800 MHz 0 dB 2: - 8.8858 dB 900 MHz 0 dB 3: - 6.2824 dB 1.8 GHz -20 dB 5 -6 dB 4 3 1 -12 dB 2 -40 dB 4: - 4.1204 dB 2.5 GHz -18 dB -60 dB 5: - 4.1436 dB 2.7 GHz -24 dB -80 dB -30 dB -100 dB -36 dB -120 dB -42 dB -48 dB -140 dB 1 MHz START. 030 MHz © 2015 Semtech Corporation 10 MHz 100 MHz 3 1 GHz GHz -160 dB START. 030 MHz STOP 3000.000000 MHz 4 STOP 3000.000000 MHz www.semtech.com TClamp1202P PRELIMINARY PROTECTION PRODUCTS Applications Information mode protection, one of the TClamp1202P data pins (pin 1 or 3) is connected to the TX/RX line and the other is connected to ground. Pins 4 and 5 as well as EIA RS-485 specifies a ±7V ground difference between the center tab are not connected. This effectively devices on the bus. This permits the bus voltage to makes the device look like a bidirectional 12V TVS to range from +12V (5V + 7V) to -7V (0 - 7V). the circuit. For differential mode protection, each of Because of this requirement, each TClamp1202P can the device data pins (1 and 3) are connected to the be configured to protect one line for common mode transceiver RX/TX pins as shown. Again, Pins 4, 5 and surges or one line pair for differential surges. the center tab are not connected. The example below illustrates how to connect the TClamp1202P for common mode and differential mode protection on an RS-485 interface. For common Device Connection for Protection of RS-485 Interfaces Receiver TClamp1202P TClamp1202P R Driver TClamp1202P RS-485 Common Mode and Differential Surge Protection © 2015 Semtech Corporation 5 www.semtech.com TClamp1202P PRELIMINARY PROTECTION PRODUCTS Outline OutlineDrawing Drawing- -SO-8 SLP2020P5 A B D DIMENSIONS MILLIMETERS MIN NOM MAX DIM E PIN 1 INDICATOR (LASER MARK) A SEATING PLANE aaa c A2 A1 C b1X3 bbb C A B A 0.50 0.60 0.65 A1 0.00 0.03 0.05 (0.127) A2 b 0.20 0.25 0.30 b1 0.25 0.30 0.35 D 1.90 2.00 2.10 D1 0.775 0.925 1.025 E 1.90 2.00 2.10 E1 0.750 0.900 1.000 e 0.675 BSC e1 0.725 BSC L 0.25 0.30 0.35 N 5 aaa 0.08 bbb 0.08 D1 e1 R0.20 1 2 E/2 LxN E1 N bX2 bbb e/2 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 - SLP2020P5 P b DIMENSIONS P/2 G (C) K Y Z DIM C G H K P P1 b b1 Y Z MILLIMETERS (1.95) 1.35 0.925 0.900 0.675 0.725 0.30 0.35 0.60 2.55 b1 P1 H 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. © 2015 Semtech Corporation 6 www.semtech.com TClamp1202P PRELIMINARY PROTECTION PRODUCTS Marking Codes PIN 1 INDICATOR (LASER MARK) Ordering Information 12P YW Part Number Qty per Reel R eel Size TClamp 1202P.TGT 10,000 13 Inch TransClamp and TClamp are trademarks of Semtech Corporation. YW = Alphanumeric character Date Code Carrier Tape Specification Pin1 Location (towards sprocket holes) 12P YW 12P YW TClamp1202P‐6‐R0 Device Orientation in Tape Contact Information Semtech Corporation Protection Products Division 200 Flynn Road, Camarillo, CA 93012 Phone: (805)498-2111 FAX (805)498-3804 © 2015 Semtech Corporation 7 www.semtech.com