SMTAK3-058C

TVS Diodes Surface Mount – 3kA > SMTAK3 Series SMTAK3 Series RoHS Pb e4 Description The SMTAK3 series of high current transient suppressors have been specially designed for use in D.C. line protection and any demanding applications. They offer superior clamping characteristics over standard S.A.D. technologies by virtue of the Littelfuse Foldbak technology. Therefore, any voltage rise due to increased current conduction is contained to a minimum, providing the best possible protection level. Features • Very low clamping voltage • Sharp breakdown voltage • Low slope resistance • Bi-directional • Foldbak technology for superior clamping factor • Symmetric in leads width for easier soldering during assembly. • IEC 61000-4-2 ESD 15kV(Air), 8kV (Contact) • ESD protection of data lines in accordance with IEC 61000-4-2 Agency Recognitions Agency Agency File Number E128662 Maximum Ratings and Thermal Characteristics (TA=25OC unless otherwise noted) Symbol Value Unit Operating Storage Temperature Range Parameter TSTG -55 to 150 °C Operating Junction Temperature Range TJ -55 to 125 ºC Current Rating1 IPP 3 kA • EFT protection of data lines in accordance with IEC 61000-4-4 • Halogen-free • RoHS compliant • Glass passivated junction • Pb-free E4 means 2nd level interconnect is Pb-free and the terminal finish material is silver (IPC/JEDEC J-STD609A.01) • UL Recognized to ANSI/ UL 497B Note: 1. Rated IPP measured with 8/20μs pulse. Functional Diagram Bi-direcctional Electrical Characteristics (T =25°C unless otherwise noted) A Part Numbers SMTAK3-015C Part Marking S3-015C Standoff Voltage (VSO) Volts 15 Max. Reverse Leakage (IR) @VSO µA Typical IR @ 85OC (µA) 10 15 Reverse Breakdown Voltage VBR (Volts) @ IT Test Current IT Max. Clamping Voltage Max. Temp VCL @ Ipp Peak Pulse Coefficient Current (IPP) (Note 1) OF VBR Max. Capacitance 0 Bias 10kHz Min Max (mA) VCL Volts IPP Amps (%/OC) (nF) 16 19 10 28 3,000 0.1 9.0 Agency Approval X SMTAK3-058C S3-058C 58 10 15 64 70 10 110 3,000 0.1 6.0 X SMTAK3-066C S3-066C 66 10 15 72 80 10 120 3,000 0.1 6.0 X SMTAK3-076C S3-076C 76 10 15 85 95 10 140 3,000 0.1 6.0 X Note: 1. Using 8/20μs wave shape as defined in IEC 61000-4-5. ©2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 04/15/19 TVS Diodes Surface Mount – 3kA > SMTAK3 Series Soldering Parameters Lead–free assembly Reflow Condition 150°C - Temperature Max (Ts(max)) 200°C Ramp-up Average ramp up rate (Liquidus Temp (TA) to peak 3°C/second max TS(max) to TA - Ramp-up Rate 3°C/second max Reflow TL 60 – 120 secs - Time (min to max) (ts) tp TP - Temperature (TL) (Liquidus) 217°C - Time (min to max) (ts) 60 – 150 seconds Temperature (T) Pre Heat - Temperature Min (Ts(min)) Critical Zone TL to TP tL Ts(max) Ramp-down Ts(min) ts Preheat 25˚C t 25˚C to Peak Time (t) Peak Temperature (TP) 260+0/-5 °C Time within 5°C of actual peak Temperature (tp) 30 seconds max Ramp-down Rate 6°C/second max Time 25°C to peak Temperature (TP) 8 minutes Max. Do not exceed 260°C Flow/Wave Soldering (Solder Dipping) Peak Temperature : 265OC Dipping Time : 10 seconds Soldering : 1 time Physical Specifications Weight Contact manufacturer Case Compound encapsulated Terminal Silver plated leads, solderable per MIL-STD-202 Method 208 Wave Solder Profile Figure 1 - Non Lead-free Profile Figure 2 - Lead-free Profile 300 300 Maximum Wave 240C TEMPERATURE (ºC) TEMPERATURE (º 250 Maximum Wave 260C 250 200 150 100 200 150 100 50 50 0 0 0 0. 5 1 1. 5 2 2. 5 TIME (MINUTES) 3 3. 5 4 0 0.5 1 1.5 2 2.5 3 3.5 4 TIME (MINUTES) ©2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 04/15/19 TVS Diodes Surface Mount – 3kA > SMTAK3 Series Ratings and Characteristic Curves (T =25°C unless otherwise noted) A Figure 3 - Peak Power Derating Figure 4 - Typical Peak Pulse Power Rating Curve 1000 8/20µs PPPM-Peak Pulse Power (kW) Percent of Rated Value 100 80 60 40 20 100 10/350µs SMTAK3-076C 10/1000µs 10 1 0 0 25 50 75 100 0.1 125 0.00001 TJ - Initial Junction Temperature (ºC) Figure 5 - Typical VBR Vs Junction Temperature 0.001 Figure 6 -Surge Response (8/20 Surge current waveform) 12 10 Percent of VBR Change 0.0001 td-Pulse Width (sec.) Voltage 8 6 4 2 Current 0 -2 -4 -6 Note: -8 -50 -25 0 25 50 75 100 125 Junction Temperature(Tj ) Time (µs) The power dissipation causes a change in avalanche voltage during the surge and the avalanche voltage eventually returns to the original value when the transient has passed. IPP – Peak Pulse Current – %IPP Figure 7 - Pulse Waveform Peak Value 100 tr = rise time to peak value td = decay time to half value tr x td =8/20µs 50 Half Value 0 0 tr td t – Time (µs) ©2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 04/15/19 TVS Diodes Surface Mount – 3kA > SMTAK3 Series Dimensions A C B K K Inches Millimeters A 0.354 +0.059/- 0.020 9.0 +1.5/- 0.5 B-SMTAK3-015C 0.362 +/- 0.059 9.2 +/- 1.5 B-SMTAK3-058C/ 066C/076C 0.394 +/- 0.039 10.0 +/- 1.0 C-SMTAK3-015C 0.205 REF 5.2 REF C-SMTAK3-058C/ 066C/076C 0.264 REF 6.7 REF D 0.366 +/- 0.020 9.3 +/- 0.5 F 0.045 +/- 0.012 1.15 +/- 0.3 G 0.020 +/- 0.008 0.5 +/- 0.2 H 0.256 +/- 0.020 6.5 +/- 0.5 G F Dimensions D I H J I 0.319 REF 8.1 REF J 0.295 +0.059/- 0.020 7.5 +1.5/- 0.5 K 0.075 +/- 0.020 1.9 +/- 0.5 Part Marking System Part Numbering System SMTAK3 -XXXX S3-xxxC Stand Off Voltage Series Type LF YWW Part Marking Trace Code Marking Y:Year Code WW: Working Week Code Littelfuse Logo Packing Options Part Number Component Package Packing Mode Quantity SMTAK3-xxxC SMTAK Package Tape & Reel – 32mm/13” tape 200 SMTAK3-xxxC-B SMTAK Package Bulk 100 1.5 2.0 4.0 20.0 0.5 14.2 1.75 Tape and Reel Specification 32.0 10.5 3.0 Dimensions in millimeters 12.0 9.0 Direction of Feed Disclaimer Notice - Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications. Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at http://www.littelfuse.com/disclaimer-electronics. ©2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 04/15/19