T491B225K035AT2478

Tantalum Surface Mount Capacitors – Standard Tantalum T491 Industrial Grade MnO 2 Density Level A: For low-density product applications. Recommended for wave solder applications and provides a wider process window for reflow solder processes. Density Level B: For products with a moderate level of component density. Provides a robust solder attachment condition for reflow solder processes. Density Level C: For high component density product applications. Before adapting the minimum land pattern variations, the user should perform qualification testing based on the conditions outlined in IPC standard 7351 (IPC–7351). 1 Height of these chips may create problems in wave soldering. V1 L L W W S Grid Placement Courtyard V2 Tantalum Surface Mount Capacitors – Standard Tantalum T491 Industrial Grade MnO 2 Note: All temperatures refer to the center of the package, measured on the package body surface that is facing up during assembly reflow. * For Case Size height > 2.5 mm ** For Case Size height ≤ 2.5 mm TP Temperature TL tL Tsmax Tsmin 25 tP Maximum Ramp Up Rate = 3°C/second Maximum Ramp Down Rate = 6°C/second ts 25°C to Peak Time Tantalum Surface Mount Capacitors – Standard Tantalum T491 Industrial Grade MnO 2 Polarity Stripe (+) Molded Epoxy Case Detailed Cross Section Silver Paint (Fourth Layer) Polarity Bevel (+) Tantalum Wire Leadframe (fl Cathode) Washer Tantalum Wire Weld (to attach wire) Carbon (Third Layer) Silver Adhesive Leadframe (+ Anode) Molded Epoxy Case KEMET Industrial Grade MnO2 Polarity Indicator (+) Picofarad Code KEMET ID Rated Voltage Date Code* * 301 = 1st week of 2023 MnO2 (Second Layer) Washer Ta2O5 Dielectric (First Layer) Tantalum Tantalum Surface Mount Capacitors – Standard Tantalum T491 Industrial Grade MnO 2 EIA Standard 481 Right hand orientation only (+) Embossed carrier (fl) Embossment Top tape thickness 0.10 mm (0.004”) maximum thickness 8 mm (0.315”) or 12 mm (0.472”) * No C-Spec required for 7" reel packaging. C-7280 required for 13" reel packaging. 180 mm (7.0”) or 330 mm (13.”) Tantalum Surface Mount Capacitors – Standard Tantalum T491 Industrial Grade MnO 2 P2 T T2 ØD0 P0 (10 pitches cumulative tolerance on tape ±0.2 mm) A0 E1 F K0 B1 B0 S1 E2 W P1 T1 Center Lines of Cavity Cover Tape B1 is for tape feeder reference only, including draft concentric about B0. ØD1 Embossment For cavity size, see Note 1, Table 4 User Direction of Unreeling 1. The embossment hole location shall be measured from the sprocket hole controlling the location of the embossment. Dimensions of embossment location and hole location shall be applied independent of each other. 2. The tape, with or without components, shall pass around R without damage (see Figure 4). 3. If S1 < 1.0 mm, there may not be enough area for cover tape to be properly applied (see EIA Standard 481–D, paragraph 4.3, section b). 4. B1 dimension is a reference dimension for tape feeder clearance only. 5. The cavity defined by A0, B0 and K0 shall surround the component with sufficient clearance that: (a) the component does not protrude above the top surface of the carrier tape. (b) the component can be removed from the cavity in a vertical direction without mechanical restriction, after the top cover tape has been removed. (c) rotation of the component is limited to 20° maximum for 8 and 12 mm tapes (see Figure 2). (d) lateral movement of the component is restricted to 0.5 mm maximum for 8 mm and 12 mm wide tape (see Figure 3). (e) see Addendum in EIA Standard 481–D for standards relating to more precise taping requirements. Tantalum Surface Mount Capacitors – Standard Tantalum T491 Industrial Grade MnO 2 Refer to EIA Standards 556 and 624 ° T Maximum Component Rotation Top View Maximum Component Rotation Side View Typical Pocket Centerline Tape Width (mm) 8, 12 Bo Maximum Rotation ( 20 ° T) Typical Component Centerline ° s Tape Maximum Width (mm) Rotation ( 8, 12 20 ° S) Ao 8 mm & 12 mm Tape 0.5 mm maximum 0.5 mm maximum Embossed Carrier Punched Carrier R Bending Radius R Tantalum Surface Mount Capacitors – Standard Tantalum T491 Industrial Grade MnO 2 Full Radius, See Note Access Hole at Slot Location (Ø 40 mm minimum) W3 (Includes flange distortion at outer edge) W2 A D (See Note) N C (Arbor hole diameter) B (see Note) If present, tape slot in core for tape start: 2.5 mm minimum width x 10.0 mm minimum depth Note: Drive spokes optional; if used, dimensions B and D shall apply. (Measured at hub) W1 (Measured at hub) Tantalum Surface Mount Capacitors – Standard Tantalum T491 Industrial Grade MnO 2 Embossed Carrier Punched Carrier 8 mm & 12 mm only END Carrier Tape Round Sprocket Holes START Top Cover Tape Elongated Sprocket Holes (32 mm tape and wider) Trailer 160 mm minimum Components 100 mm minimum Leader 400 mm minimum Top Cover Tape Elongated Sprocket Holes (32 mm & wider tapes) 1 mm maximum, either direction Straight Edge 250 mm Carrier Tape Round Sprocket Holes Tantalum Surface Mount Capacitors – Standard Tantalum T491 Industrial Grade MnO 2 KEMET is a registered trademark of KEMET Electronics Corporation.