TVS Diodes Axial Leaded – 3kA > AK3 series AK3 Series RoHS Pb e4 Description The AK3 series of high current transient suppressors have been specially designed for use in A.C. line protection and any demanding applications (AC or DC). 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. They can also be connected in series and/ or parallel to create very high capacity protection solutions. Agency Approvals Features AGENCY • Very low clamping voltage • Ultra compact: less than one-tenth the size of traditional discrete solutions • Sharp breakdown voltage • Low slope resistance • Bi-directional • Foldbak technology for superior clamping factor • Symmetric in leads width for easier soldering during assembly. AGENCY FILE NUMBER E128662 Maximum Ratings and Thermal Characteristics (TA=25OC unless otherwise noted) Parameter Symbol Value Unit Operating Storage Temperature Range TSTG (-)55 to 150 °C Operating Junction Temperature Range TJ (-)55 to 125 ºC Current Rating1 IPP 3 kA • IEC-61000-4-2 ESD 15kV(Air), 8kV (Contact) • ESD protection of data lines in accordance with IEC 61000-4-2 (IEC801-2) • EFT protection of data lines in accordance with IEC 61000-4-4 (IEC801-4) • Halogen-free • RoHS compliant • Glass passivated junction • 2nd level interconnect is Pb-free per IPC/JEDEC J-STD-609A.01 Note: 1. Rated IPP measured with 8/20μs pulse. Functional Diagram Bi-direcctional Electrical Characteristics (T =25°C unless otherwise noted) A Part Numbers AK3 - 015C AK3 - 030C AK3 - 058C AK3 - 066C AK3 - 076C AK3 - 150C AK3 - 170C AK3 - 208C AK3 - 380C AK3 - 430C Max. Standoff Reverse Part Voltage Leakage Marking (VSO) (IR) @VSO Volts µA 3 - 015C 3 - 030C 3 - 058C 3 - 066C 3 - 076C 3 - 150C 3 - 170C 3 - 208C 3 - 380C 3 - 430C 15 30 58 66 76 150 170 208 380 430 10 10 10 10 10 10 10 10 10 10 Max. Clamping Max. Max. Typical Reverse Breakdown Test Agency Voltage Temp Current Capacitance Approval IR @ Voltage (VBR) @ IT VCL @ Ipp Peak Pulse Coefficient IT 0 Bias 10kHz 85OC Current (IPP) (Note 1) OF VBR (µA) Min Volts Max Volts (mA) VCL Volts IPP Amps (%/OC) (nF) 15 15 15 15 15 15 15 15 15 15 16 32 64 72 85 158 179 223 401 440 19 37 70 80 95 194 220 246 443 490 10 10 10 10 10 10 10 10 10 10 28 90 110 120 140 230 260 262 520 625 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 3,000 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 0.1 9.0 11.0 6.0 6.0 6.0 2.6 2.4 2.4 2.0 2.0 X X X X X X X X X Note: 1. Using 8/20µS wave shape as defined in IEC 61000-4-5. AK3 Series 164 ©2014 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 10/09/14 TVS Diodes Axial Leaded – 3kA > AK3 series Flow/Wave Soldering (Solder Dipping) Physical Specifications Weight Contact manufacturer Case Epoxy encapsulated Terminal Silver plated leads, solderable per MIL-STD-750 Method 2026 Peak Temperature : 265OC Dipping Time : 10 seconds Soldering : 1 time Wave Solder Profile Figure 1 - Non Lead-free Profile Figure 2 - Lead-free Profile 300 300 250 250 TEMPERATURE (ºC) TEMPERATURE (ºC) Maximum Wave 260C Maximum Wave 240C 200 150 100 50 200 150 100 50 0 0 0.5 1 1.5 2 2.5 3 3.5 0 4 0 TIME(MINUTES) 0.5 1 1.5 2 2.5 3 3.5 4 TIME(MINUTES) Ratings and Characteristic Curves (T =25°C unless otherwise noted) A Figure 4 - Surge Response 100 80 Current (kA) Percent of Rated Value Figure 3 - Peak Power Derating 60 40 20 0 0 25 50 75 100 125 Voltage (V) TA-Ambient Temperature(°C) continues on next page. AK3 Series 165 ©2014 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 10/09/14 TVS Diodes Axial Leaded – 3kA > AK3 series Ratings and Characteristic Curves (T =25°C unless otherwise noted) (Continued) A Figure 5 - Typical Peak Pulse Power Rating Curve 12 10 8/20µs 10/350µs 100 8 Percent of VBR Change PPPM-Peak Pulse Power (kW) 1000 Figure 6 - Typical VBR Vs Junction Temperature AK3-076C 10/1000µs 10 1 6 4 2 0 -2 -4 -6 -8 0.1 0.00001 0.0001 -50 0.001 -25 0 25 50 75 100 125 Junction Temperature(Tj ) td-Pulse Width (sec.) Figure 8 - Pulse Waveform Figure 7 -Surge Response (8/20 Surge current waveform) IPP – Peak Pulse Current – %IPP Voltage Current Time (µs) Note: 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. 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) Dimensions Dimensions A G L2 F L1 D C B AK3 Series C Inches Millimeters -015C 0.951 +/- 0.040 0.094 +/- 0.024 0.236 +/- 0.039 0.433 max. 0.050 +/- 0.002 0.374 max. 0.093 +/- 0.039 24.15 +/- 1.00 2.40 +/- 0.60 6.00 +/- 1.00 11.0 max. 1.27 +/- 0.05 9.50 max. 2.36 +/- 1.00 -030C/-066C 0.130 +/- 0.047 3.30 +/- 1.20 A B C D E F E G 166 -058C/-076C 0.168 +/- 0.047 4.27 +/- 1.20 -150C 0.383 +/- 0.047 9.72 +/- 1.20 -170C 0.420 +/- 0.047 10.67 +/- 1.20 -380C 0.547 +/- 0.047 13.90 +/- 1.20 -430C 0.583 +/- 0.047 14.80 +/- 1.20 L1= L2 tolerance +/- 0.047 inch (+/- 1.20 mm) L1/L2 ©2014 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 10/09/14 TVS Diodes Axial Leaded – 3kA > AK3 series Part Marking System Part Marking YWW Trace Code Marking Y:Year Code WW: Working Week Code Apply to P/N listed below: AK3-150C AK3-170C AK3-208C AK3-380C AK3-430C 3-xxxx LF Littelfuse Logo LF YWW 3-XXXX Littelfuse Logo Apply to P/N listed below: AK3-015C AK3-030C AK3-058C AK3-066C AK3-076C Trace Code Marking Part Marking Y:Year Code WW: Working Week Code Type 1- Side View Type 2 - Top View Packing Options Part Numbering System AK3 - XXXX Series Type Stand Off Voltage (Please Refer to Electrical Characteristics Chart) AK3 Series 167 Part Number Component Package Quantity Packaging Option AK3-XXXX AK Package 56pcs/Box Bulk AK3-XXXX-12 AK Package 12pcs/Box Bulk ©2014 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 10/09/14