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| PROTECTION PRODUCTS - MicroClamp(R) Description The Clamp series of Transient Voltage Suppressors (TVS) are designed to replace multilayer varistors (MLVs) in portable applications such as cell phones, notebook computers, and PDAs. They offer superior electrical characteristics such as lower clamping voltage and no device degradation when compared to MLVs. They are designed to protect sensitive semiconductor components from damage or upset due to electrostatic discharge (ESD), lightning, electrical fast transients (EFT), and cable discharge events (CDE). The Clamp(R)2501T is constructed using Semtech's proprietary EPD TVS process technology. The EPD process provides low operating voltages with significant reductions in leakage currents and capacitance over silicon-avalanche diode processes. They feature a true sub 5 volt operating voltage for superior protection when compared to traditional pn junction devices. The Clamp2501T is in a 2-pin SLP1006P2T package. It measures 1.0 x 0.6 x 0.4mm. The leads are spaced at a pitch of 0.65mm and are finished with lead-free NiPdAu. Each device will protect one line operating at 2.5 volts. It gives the designer the flexibility to protect single lines in applications where arrays are not practical. 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 MP3 players. (R) Low Voltage Clamp(R) 2.5V TVS Diode Features 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 (1.0 x 0.6 x 0.4mm) Low leakage current: <10nA typical (VR=2.5V) Low Operating voltage: 2.5V Low capacitance Protects one data line Solid-state silicon-avalanche technology UCLAMP2501T Mechanical Characteristics SLP1006P2T package Pb-Free, Halogen Free, RoHS/WEEE Compliant Nominal Dimensions: 1.0 x 0.6 x 0.4 mm Lead Finish: NiPdAu Molding compound flammability rating: UL 94V-0 Marking : Marking code, cathode band Packaging : Tape and Reel Applications Cellular Handsets & Accessories Portable Instrumentation Keypads, Side Keys, LCD Displays Notebooks & Desktop Computers mp3 Players Dimensions 1.0 0.60 0.65 Schematic & PIN Configuration 2 0.40 1 SLP1006P2T (Bottom View) 1 www.semtech.com Nominal Dimensions (mm) Revision 10/21/2009 UCLAMP2501T PROTECTION PRODUCTS Absolute Maximum Rating R ating Peak Pulse Power (tp = 8/20s) Maximum Peak Pulse Current (tp = 8/20s) ESD p er IEC 61000-4-2 (Air) ESD p er IEC 61000-4-2 (Contact) Op erating Temp erature Storage Temp erature Symbol Pp k Ip p VESD TJ TSTG Value 40 5 +/- 20 +/- 15 -40 to +85 -55 to +150 Units Watts Amps kV C C Electrical Characteristics (T=25oC) Parameter Reverse Stand-Off Voltage Punch-Through Voltage Snap -Back Voltage Reverse Leakage Current Clamp ing Voltage Clamp ing Voltage Forward Voltage Junction Cap acitance Symbol VRWM V PT VSB IR VC VC VF Cj Conditions Minimum Typical Maximum 2.5 Units V V V IPT = 2A ISB = 50mA VRWM = 2.5V IPP = 1A, tp = 8/20s IPP = 5A, tp = 8/20s IPP = 1A, tp = 8/20s Pi n 2 to 1 VR = 0V, f = 1MHz Pi n 2 to 1 VR = 2.5V, f = 1MHz 2.7 2.8 3.1 3.6 0.01 0.05 5 7.5 2.4 A V V V pF 25 30 14 pF (c) 2009 Semtech Corp. 2 www.semtech.com UCLAMP2501T PROTECTION PRODUCTS Non-Repetitive Peak Pulse Power vs. Pulse Time 1 10 9 Peak Pulse Power - P PP (kW) Clamping Voltage - VC (V) 8 7 6 5 4 3 2 1 0.01 0.1 1 10 Pulse Duration - tp ( s) 100 1000 0 0 1 2 3 4 5 6 Waveform Parameters: tr = 8s td = 20s Clamping Voltage vs. Peak Pulse Current 0.1 Peak Pulse Current - IPP (A) Normalized Junction Capacitance vs. Reverse Voltage CH1 S21 Typical Insertion Loss (S21) LOG 6 dB / REF 0 dB 1: -9.2069 dB 900 MHz 2: -12.958 dB 1.8 GHz 3: -11.689 dB 2.5 GHz 0 dB -6 dB -12 dB -18 dB -24 dB -30 dB 1 3 2 4 1.6 f = 1 MHz 1.4 1.2 Cj(VR) / Cj(VR=0V) 1 0.8 0.6 0.4 0.2 0 0 0.5 1 1.5 2 Reverse Voltage - VR (V) 2.5 3 4: -3.0358 dB 227MHz -36 dB 1 MHz START . 030 MHz 10 MHz 100 MHz 3 1 GHz GHz STOP 3000. 000000 MHz ESD Clamping (Pin 2 to 1) (8kV Contact per IEC 61000-4-2) ESD Clamping (Pin 1 to 2) (-8kV Contact per IEC 61000-4-2) Note: Data is taken with a 10x attenuator (c) 2009 Semtech Corp. 3 Note: Data is taken with a 10x attenuator www.semtech.com UCLAMP2501T PROTECTION PRODUCTS Applications Information Device Connection Options The Clamp2501T is designed to protect one data line operating up to 2.5 volts. It will present a high impedance to the protected line up to 2.5 volts. It will "turn on" when the line voltage exceeds 2.7 volts. The device is unidirectional and may be used on lines where the signal polarity is above ground. These devices are not recommended for use on DC power supply lines due to their snap-back voltage characteristic. EPD TVS Characteristics These devices are constructed using Semtech's proprietary EPD technology. The structure of the EPD TVS is vastly different from the traditional pn-junction devices. At voltages below 5V, high leakage current and junction capacitance render conventional avalanche technology impractical for most applications. However, by utilizing the EPD technology, these devices can effectively operate at 2.5V while maintaining excellent electrical characteristics. The EPD TVS employs a complex nppn structure in contrast to the pn structure normally found in traditional silicon-avalanche TVS diodes. The EPD mechanism is achieved by engineering the center region of the device such that the reverse biased junction does not avalanche, but will "punch-through" to a conducting state. This structure results in a device with superior DC electrical parameters at low voltages while maintaining the capability to absorb high transient currents. 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: Place the TVS near the input terminals or connectors to restrict transient coupling. Minimize the path length between the TVS and the protected line. Minimize all conductive loops including power and ground loops. The ESD transient return path to ground should be kept as short as possible. Never run critical signals near board edges. Use ground planes whenever possible. (c) 2009 Semtech Corp. 4 www.semtech.com Device Schematic & Pin Configuration 2 1 UCLAMP2501T PROTECTION PRODUCTS Applications Information - Spice Model Spice Model UCLAMP2501T Spice Parameters Parameter IS BV VJ RS IB V CJO TT M N EG Unit Amp Volt Volt Ohm Amp Farad sec --eV D1 (T VS) 9.5E-15 2.81 0.72 0.707 1.0E-3 23E-12 2.541E-9 0.18 1.1 1.11 (c) 2009 Semtech Corp. 5 www.semtech.com UCLAMP2501T PROTECTION PRODUCTS Outline Drawing - SLP1006P2T A D B E DIMENSIONS INCHES MILLIMETERS DIM MIN NOM MAX MIN NOM MAX A A1 b D E e L R N aaa bbb .015 .016 .017 .000 .001 .002 .018 .020 .022 .035 .039 .043 .020 .024 .028 .026 BSC .008 .010 .012 .002 .004 .006 2 .003 .004 0.37 0.40 0.43 0.00 0.03 0.05 0.45 0.50 0.55 0.90 1.00 1.10 0.50 0.60 0.70 0.65 BSC 0.20 0.25 0.30 0.05 0.10 0.15 2 0.08 0.10 TOP VIEW A aaa C A1 PIN 1 ID R bxN bbb CAB 2x L e C SEATING PLANE BOTTOM VIEW NOTES: 1. CONTROLLING DIMENSIONS ARE IN MILLIMETERS (ANGLES IN DEGREES). Land Pattern - SLP1006P2T Y (C) G Z X NOTES: DIM C G X Y Z DIMENSIONS INCHES MILLIMETERS (.033) (0.85) .012 0.30 .024 0.60 .022 0.55 .055 1.40 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. (c) 2009 Semtech Corp. 6 www.semtech.com UCLAMP2501T PROTECTION PRODUCTS Marking Code Ordering Information Part Number Working Voltage 2.5V Qty per Reel 3,000 Reel Size 7 Inch 25 Notes: 1) Marking will also include line matrix date code uClamp 2501T.TCT Notes: 1) MicroClamp, uClamp and Clamp are marks of Semtech Corporation Tape and Reel Specification Pin 1 Location User Direction of feed Device Orientation in Tape A0 0.69 +/-0.10 mm B0 1.19 +/-0.10 mm K0 0.66 +/-0.10 mm Tape Width B, (Max) D 1.5 + 0.1 mm - 0.0 mm (0.59 +.005 - .000) D1 E 1.750.10 mm (.069.004) F P 4.00.10 mm (.157.004) P0 4.00.1 mm (.157.004) P2 T W 8.0 mm + 0.3 mm - 0.1 mm (.312.012) 8 mm 4.2 mm (.165) 0.4 mm 0.25 (.031) 3.50.05 mm (.138.002) 2.00.05 mm (.079.002) 0.2540.02 mm (.016) Contact Information Semtech Corporation Protection Products Division 200 Flynn Rd., Camarillo, CA 93012 Phone: (805)498-2111 FAX (805)498-3804 www.semtech.com (c) 2009 Semtech Corp. 7 |
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