Expertise Applied | Answers Delivered TVS DiodesAxial Leaded - 1kA > AK1-Y series HFImITO ® @Descriptions The AK1-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). These AK components can be connected in series and / or parallel to create a very high surge current protection solution. Features Agency Recognitions Maximum Ratings and Thermal Characteristics (TA=25OC unless otherwise noted) Note: 1. Rated Ipp measured with 8/20ps pulse. Functional Diagram • Recognized to UL 497B as an Isolated Loop Circuit protector • Both reflow and wave soldering capable • Very low clamping voltage • Ultra compact: less than one-tenth the size of traditional discrete solutions • Sharp breakdown voltage • Low slope resistance • Bi-directional • IEC-61000-4-2 ESD 15kV(Air), 8kV (Contact) • Symmetric in leads width for easier soldering during assembly. • ESD protection of data lines in accordance with IEC 61000-4-2 • EFT protection of data lines in accordance with IEC 61000-4-4 • UL Recognized compound meeting flammability rating V-0 • Halogen-free and RoHS compliant • Glass passivated junction • Pb-free E4 means 2nd level interconnect is pb-free and the terminal finish material is silver ©2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 0

Axial Leaded – 1kA > AK1-Y series Ratings and Characteristic Curves (T =25°C unless otherwise noted) A Figure 2 - Typical Peak Pulse Power Rating Curve 1000 PPPM-Peak Pulse Power (kW) Percent of Rated Value Figure 1 - Peak Power Derating TJ - Initial Junction Temperature (ºC) Figure 3 - Typical VBR Vs Junction Temperature Figure 4 - Pulse Waveform IPP – Peak Pulse Current – %IPP Junction Temperature(Tj ) Peak Value tr = rise time to peak value td = decay time to half value Half Value ©2019 Littelfuse, Inc. Specifications are subject to change without notice. Revi

Expertise Applied | Answers Delivered TVS Diodes Axial Leaded - 1kA > AK1-Y series Soldering Parameters ©2019 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 07/18/19

Uttelfuse* Expertise Applied | Answers Delivered TVS DiodesAxial Leaded - 1kA > AK1-Y series Dimensions Packing Options Part Numbering System Part Number Series Type Yellow Coating Stand Off Voltage (Please Refer to Electrical Characteristics Chart) Part Marking System Littelfuse Logo Type 1 - Side View 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...