TVS Diodes Axial Leaded - 15kA > AK15-Y Series RoHS Pb e4 AK15-Y Series Descriptions The AK15-Y series of high power TVS diode is specially designed for meeting severe surge test environment of both AC and DC line protection applications. It features a very fast response and ultra low clamping characteristics as compared to MOVs (Metal Oxide Varistors). It accomplishes TM this by virtue of the Littelfuse Foldback technology,which provides a clamping voltage lower than the avalanche voltage (but above the rated working voltage) therefore, any voltage rise due to increased current conduction is maintained at a minimum magnitude, providing the best possible protection level. These AK components can be connected in series and / or parallel to create a very high surge current protection Agency Approvals solution. Agency Agency File Number Features E128662 No wear-out nor degrade IEC 61000-4-2 ESD 15 kV surge rating over multiple (air), 8 kV (contact) rating transient events as long Lightning, 15 kA (8/20 as as within surge capability defined in IEC 61000-4-5 nd Maximum Ratings and Thermal Characteristics Ultra high power rating 2 Edition) O (T =25 C unless otherwise noted) A Very low clamping voltage EFT protection of data lines in accordance with Both reflow and wave Parameter Symbol Value Unit IEC 61000-4-4 soldering capable Operating Storage Temperature Range T -55 to 150 C Halogen-free and RoHS Ultra compact: less STG compliant Operating Junction Temperature Range T -55 to 125 C than one-tenth the size J 1 of traditional discrete Glass passivated junction Current Rating I 15 kA PP nd solutions Pb-free E4 means 2 level Note: nd 1. Rated I measured with 8/20 pulse as defined in IEC 61000-4-5 2 edition. Sharp breakdo wn voltage interconnect is Pb-free PP and the terminal finish Low slope resistance material is silver (IPC/ Bi-directional JEDEC J-STD-609A.01) Functional Diagram Foldback technology for superior clamping factor Symmetric lead width for easy soldering during assembly Bi-direcctional Electrical Characteristics (T =25C unless otherwise noted) A Reverse Test Max. Clamping Voltage Max. Temp Max. Breakdown Max. Current V Peak Pulse Current Coefficient Capacitance CL Agency Voltage Standoff Reverse Typical I R I (I ) of V 0V Bias 10kHz Part Part T PP BR Approval O (V ) I Voltage Leakage 85 C BR T Numbers Marking (V ) Volts (I ) V (A) SO R SO I I PP PP Min Max V (A) CL O (mA) (8/20s) (10/350s) (%/ C) (nF) Volts Volts Volts (A) (A) AK15-058C-Y 15-058C 58 10 15 64 70 10 110 15,000 2,000 0.1 16 X AK15-066C-Y 15-066C 66 10 15 72 80 10 120 15,000 2,000 0.1 12 X AK15-076C-Y 15-076C 76 10 15 85 95 10 150 15,000 2,000 0.1 12 X AK15-190C-Y 15-190C 190 10 15 200 245 10 290 15,000 1,500 0.1 5 X nd Note: Using the 8/20 waveshape as defined in IEC 61000-4-5 2 Edition. 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 12/16/20TVS Diodes Axial Leaded - 15kA > AK15-Y Series Soldering Parameters Reflow Condition Leadfree assembly t p T P - Temperature Min (T ) 150C s(min) Ramp-up Critical Zone Pre Heat - Temperature Max (T ) 200C s(max) T to T L P T L t L - Time (min to max) (t ) 60 120 secs s T s(max) Average ramp up rate (Liquidus Temp (T ) to peak 3C/second max L T to T - Ramp-up Rate 3C/second max Ramp-down S(max) L T s(min) t - Temperature (T ) (Liquidus) 217C s L Preheat Reflow - Time (min to max) (t ) 60 150 seconds s +0/-5 Peak Temperature (T ) 260 C 25C P t 25C to Peak Time within 5C of actual peak Temperature (t ) 30 seconds max Time (t) p Ramp-down Rate 6C/second max Physical Specifications Time 25C to peak Temperature (T ) 8 minutes max. P Do not exceed 260C Weight Contact manufacturer UL Recognized compound meeting Case ammabilitfl y rating V-0 Silver plated leads, solderable per Terminal MIL-STD-750 Method 2026 Flow Soldering (Solder Dipping) Wave soldering condition Pb - Free assembly t P - Temperature Min 140C T P Pre Heat - Temperature Max 160C Ramp-up Time to Pre-Heat Temp 60-150 seconds Average ramp up rate to Pre-Heat Temp 5C/second max Peak Temperature 260+0/-5 C T S Average ramp up rate (Tpre-heat to Tp) 5C/second max Ramp Down Pre-heatPre-heat Time within actual peak Temperature Max 6 seconds Ramp-down Rate 5C/second max time to peak temperature Time (t) Ratings and Characteristic Curves (T =25C unless otherwise noted) A Figure 1- Peak Power Derating Figure 2 - Pulse Waveform t = rise time to peak value 100 r t = decay time to half value d Peak 100 80 Value t x t =8/20s r d 60 40 50 Half Value 20 0 0 0255075 100 125 t t r d 0 T - Initial Junction Temperature (C) t Time (s) J 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD. 12/16/20 Percent of Rated Value Temperature (T) I Peak Pulse Current %I PP PP Temperature