RKEF500K-2

PolySwitch® Resettable PPTCs Radial Leaded > RKEF Series RKEF Series RoHS Description Littelfuse PolySwitch radial-leaded devices represent the most comprehensive and complete set of PPTC products available in the industry today. RKEF series is for balance of voltage rating (60V) and hold current (up to 5A). Features • Resettable and single-use overcurrent devices • Wide range of form factor and termination methods • Devices compatible with high-volume electronics assembly • RoHS compliant, Lead-Free and Halogen-Free Agency Approvals AGENCY AGENCY FILE NUMBER Applications E74889 • Satellite video receivers • CD-ROMs 78165 • Industrial controls • Game machines • Transformers • Battery packs • Computer motherboards • Phones • Modems • Fax machines • USB hubs, ports and peripherals • Analog and digital line cards 72161791 Additional Information • Printers • IEEE 1394 ports Datasheet Samples Resources Electrical Characteristics Part Number IH IT (A) (A) VMAX (VDC) IMAX (VAC RMS) (DCADC) PD Typ (ACARMS) (W) Max Time-to-trip (A) (s) RMIN RMAX R1MAX (Ω) (Ω) (Ω) Lead Size (mm2/AWG) RKEF – 60V RKEF050 0.50 1.00 60 — 40 — 1.00 8.00 0.8 0.320 0.529 0.900 0.205/24 RKEF065 0.65 1.30 60 — 40 — 1.25 8.00 1.0 0.250 0.450 0.720 0.205/24 RKEF075 0.75 1.50 60 — 40 — 1.40 8.00 1.5 0.200 0.390 0.640 0.205/24 RKEF090 0.90 1.80 60 — 40 — 1.50 8.00 2.0 0.190 0.320 0.520 0.205/24 RKEF110 1.10 2.20 60 — 40 — 2.20 8.00 3.0 0.170 0.280 0.470 0.520/20 RKEF135 1.35 2.70 60 — 40 — 2.30 8.00 4.5 0.110 0.220 0.370 0.520/20 RKEF160 1.60 3.20 60 — 40 — 2.40 8.20 9.0 0.100 0.200 0.320 0.520/20 RKEF185 1.85 3.70 60 — 40 — 2.60 9.25 12.6 0.060 0.152 0.250 0.520/20 RKEF250 2.50 5.00 60 — 40 — 2.80 12.50 15.6 0.040 0.085 0.140 0.520/20 RKEF300 3.00 6.00 60 — 40 — 3.20 15.00 19.8 0.030 0.050 0.080 0.520/20 RKEF375 3.75 7.50 60 — 40 — 3.40 18.75 22.0 0.017 0.040 0.060 0.520/20 RKEF400 4.00 8.00 60 — 40 — 3.70 20.00 24.0 0.014 0.038 0.060 0.520/20 RKEF500 5.00 10.00 60 — 40 — 5.00 25.00 28.0 0.012 0.030 0.050 0.520/20 Notes: IH : Hold current: maximum current device will pass without interruption in 20°C still air. IT : Trip current: minimum current that will switch the device from low resistance to high resistance in 20°C still air. VMAX : Maximum continuous voltage device can withstand without damage at rated current. IMAX : Maximum fault current device can withstand without damage at rated voltage. PD : Power dissipated from device when in the tripped state in 20°C still air. RMIN : Minimum resistance of device as supplied at 20°C unless otherwise specified. RMAX : Maximum resistance of device as supplied at 20°C unless otherwise specified. R1MAX : Maximum resistance of device when measured one hour post reflow (surface-mount device) or one hour post trip ( radial-leaded device) at 20°C unless otherwise specified. * Electrical characteristics determined at 25°C. © 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 10/22/18 PolySwitch® Resettable PTCs Radial Leaded > RKEF Series Temperature Rerating Maximum Ambient Temperature -40°C -20°C 0°C 20°C 25°C 40°C 50°C 60°C 70°C 85°C Hold Current (A) RKEF – 60V RKEF050 0.73 0.65 0.58 0.50 0.48 0.42 0.38 0.34 0.31 0.26 RKEF065 0.94 0.85 0.75 0.65 0.63 0.54 0.50 0.44 0.40 0.34 RKEF075 1.09 0.98 0.86 0.75 0.73 0.62 0.58 0.51 0.46 0.39 RKEF090 1.30 1.17 1.04 0.90 0.87 0.75 0.69 0.61 0.55 0.47 RKEF110 1.60 1.43 1.27 1.10 1.06 0.92 0.85 0.75 0.67 0.57 RKEF135 1.96 1.76 1.55 1.35 1.31 1.12 1.04 0.92 0.83 0.71 RKEF160 2.32 2.08 1.84 1.60 1.55 1.33 1.23 1.08 0.98 0.83 RKEF185 2.68 2.41 2.13 1.85 1.79 1.54 1.43 1.26 1.13 0.96 RKEF250 3.63 3.25 2.88 2.50 2.43 2.08 1.93 1.70 1.52 1.31 RKEF300 4.35 3.90 3.45 3.00 2.91 2.50 2.30 2.04 1.84 1.55 RKEF375 5.44 4.88 4.31 3.75 3.64 3.11 2.90 2.54 2.29 1.94 RKEF400 5.80 5.20 4.60 4.00 3.88 3.32 3.08 2.73 2.45 2.08 RKEF500 7.25 6.50 5.75 5.00 4.85 4.15 3.85 3.41 3.06 2.59 Temperature Rerating Curve % of Rated Hold and Trip Current 200 150 100 50 0 -40 -20 0 20 40 Ambient Temperature (˚C) © 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 10/22/18 60 80 PolySwitch® Resettable PPTCs Radial Leaded > RKEF Series Typical Time-to-Trip Curves at 20°C 100 H = RKEF185 I = RKEF250 J = RKEF300 K = RKEF375 L = RKEF400 M = RKEF500 E A B C F G I J H K L M D 10 Time-to-Trip (s) RKEF A = RKEF050 B = RKEF065 C = RKEF075 D = RKEF090 E = RKEF110 F = RKEF135 G = RKEF160 M L K 1 J I 0.1 H G 0.01 F 1 A BCD E 10 100 Fault Current (A) Physical Specifications Lead Material Soldering Characteristics Solder Heat Withstand RKEF050 to 090 : Tin-plated Copper, 0.205mm2 (24AWG), ø0.51mm (0.020in) RKEF110 to 500 : Tin-plated Copper, 0.52mm2 (20AWG), ø0.81mm (0.032in) Solderability per ANSI/J-STD-002 Category 3 RKEF050-RKEF185: per IEC-STD 68-2-20, Test Tb, Method 1a, Condition a; Can Withstand 5s at 260°C ±5°C All Other Sizes: per IEC-STD 68-2-20, Test Tb, Method 1a, Condition b; RKEF Can Withstand 10s at 260°C ±5°C Insulating Material Cured, Flame-retardant Epoxy Polymer; Meets UL 94V-0 Operation Temperature -40°C~85°C Note: Devices are not designed to be placed through a reflow process. Environmental Specifications Test Conditions Resistance Change -40°C, 1000 hrs ±5% 85°C, 1000 hrs ±5% Humidity Aging 85°C, 85% R.H., 1000 hrs ±10% Thermal Shock 85°C, -40°C (10 Times) ±10% Solvent Resistance MIL-STD-202, Method 215F No change Moisture Resistance Level Level 1, J-STD-020 Storage Conditions 40°C max, 70% RH max; devices should remain in original sealed bags prior to use. Devices may not meet specified values if these storage conditions are exceeded. Passive Aging © 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 10/22/18 A A E E A A PolySwitch® Resettable PTCs Radial Leaded > RKEF Series C CL to CL A F CL CL C F CL to CL C C L L C CL to CL A E E A A B B E B F C CC L L CL to CL A D C CL to CL C F CL to CL C C L L F CL CL C CL to CL Figure 1 D C CL to CL F CL CL A A C E C C F CL to CL C C L L Figure 3 F CL CL C F CL to CL C C L L C CL to CL H E D D F CL CL F CL CL Figure 4 Figure 2 A Dimensions and Weights J A A A C C A E E E E B B Dimensions in Millimeters (Inches) J Part Number A Min J Max B E Min B E Max C Min H H Max Min RKEF – 60V Max D E Min DC CL to CL D Max C CL to CL 3.56 Figure Device Mass (g) (Only for Reference) 1,3,4 0.166 D — 4.32 (0.17) 5.84 C 7.60 (0.23) CL to CL(0.30) 7.11 (0.28) — 12.20 (0.48) 4.32 (0.17) 5.84 (0.23) 7.60 (0.30) — — 3.56 (0.14) 1,3,4 0.182 — 7.87 (0.31) — 12.20 (0.48) 4.32 (0.17) 5.84 (0.23) 7.60 (0.30) — — 3.56 (0.14) 1,3,4 0.201 — 7.87 (0.31) — 13.97 (0.55) 4.32 (0.17) 5.84 (0.23) 7.60 (0.30) — — 3.56 (0.14) 1,3,4 0.235 — 7.60 (0.30) — 15.00 (0.59) 4.32 (0.17) 5.84 (0.23) 7.60 (0.30) — — 4.10 (0.16) 1,3,4 0.353 — 10.20 (0.40) — 17.00 (0.67) 4.32 (0.17) 5.84 (0.23) 7.60 (0.30) — — 3.81 (0.15) 2,3,4 0.438 RKEF160 — 12.20 (0.48) — 18.30 (0.72) 4.32 (0.17) 5.84 (0.23) 7.60 (0.30) — — 3.81 (0.15) 2,3,4 0.546 RKEF185 — 13.00 (0.51) — 18.80 (0.74) 4.32 (0.17) 5.84 (0.23) 7.60 (0.30) — — 3.81 (0.15) 2,3,4 0.538 RKEF250 — 14.00 (0.55) — 20.60 (0.81) 4.32 (0.17) 5.84 (0.23) 7.60 (0.30) — — 3.00 (0.12) 2,3,4 0.775 RKEF300 — 16.50 (0.65) — 21.20 (0.83) 4.32 (0.17) 5.84 (0.23) 7.60 (0.30) — — 3.00 (0.12) 2,3,4 0.971 RKEF375 — 16.50 (0.65) — 25.20 (0.99) 9.40 (0.37) 10.90 (0.43) 7.60 (0.30) — — 3.00 (0.12) 2,3,4 1.142 RKEF400 — 21.00 (0.83) — 24.90 (0.98) 9.40 (0.37) 10.90 (0.43) 7.60 (0.30) — — 3.00 (0.12) 2,3,4 1.391 RKEF500 — 24.10 (0.95) — 29.00 (1.14) 9.40 (0.37) 10.90 (0.43) 7.60 (0.30) — — 3.00 (0.12) 2,3,4 1.783 RKEF065 A — — E RKEF075 B B RKEF090 D RKEF110 D C C CL to CL CL to CL RKEF135 E 7.10 (0.28) B D 11.43 (0.45) RKEF050 A D B J A J B J D D E E E B J D F CL CL C CL to CL F CL CL A J E D C F CL to CL C C L L D C CL to CL B B A B E E A B B D F CL CL C CL to CL E E D Dimension Figures A E D D C F CL to CL C C L L A B D D A A B B B B E E © 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 10/22/18 C — CL to CL — (0.14) H PolySwitch® Resettable PPTCs Radial Leaded > RKEF Series Packaging and Marking Information Part Number Bag Quantity Tape and Reel Quantity Ammo Pack Quantity Standard Package Quantity Part Marking Agency Recognition RKEF – 60V RKEF050 500 — — 10,000 K50 UL, CSA, TÜV RKEF065 500 — — 10,000 K65 UL, CSA, TÜV RKEF075 500 — — 10,000 K75 UL, CSA, TÜV RKEF090 500 — — 10,000 K90 UL, CSA, TÜV RKEF110 500 — — 10,000 K110 UL, CSA, TÜV RKEF135 500 — — 10,000 K135 UL, CSA, TÜV RKEF160 500 — — 10,000 K160 UL, CSA, TÜV RKEF185 500 — — 10,000 K185 UL, CSA, TÜV RKEF250 500 — — 10,000 K250 UL, CSA, TÜV RKEF300 250 — — 5,000 K300 UL, CSA, TÜV RKEF375 250 — — 5,000 K375 UL, CSA, TÜV RKEF400 250 — — 5,000 K400 UL, CSA, TÜV RKEF500 250 — — 5,000 K500 UL, CSA, TÜV Part Ordering Number System RKEF 250 U 2 Packaging Blank = Packaged in Bags -1 = 25.4mm (1.0 in) Minimum Lead Length -2 = Tape and Reel -AP = Ammo Pack -X.X = Special Lead Cut Length (in) Modifier K = Standard Kinked Lead B = Special Kinked Lead S = Straight Lead U = Uncoated Device Hold Current Indicator Product Series An “F” at the end of product series indicates Pb-free version of product. Note: Kinked parts are recommended to control the height of the part on the PCB in non-auto PCB applications. © 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 10/22/18 PolySwitch® Resettable PTCs Radial Leaded > RKEF Series Tape and Reel Specifications RKEF devices are available in tape and reel packaging per EIA468-B/IEC60286-2 standards. See Figures 1 and 2 for details. Description EIA Mark Dimension (mm) Tolerance Carrier Tape Width W 18 -0.5/+1.0 Hold-Down Tape Width W4 11 Minimum Top Distance between Tape Edges W6 3 Maximum Sprocket Hole Position W5 9 -0.5/+0.75 Sprocket Hole Diameter D0 4 ± 0.2 Abscissa to Plane (Straight Lead) (RKEF135 To RKEF500) H 18.5 ± 2.5 Abscissa to Plane (Kinked Lead) (RKEF050 To RKEF110) H0 16.0 ± 0.5 Abscissa to Top (RKEF050 To RKEF185) H1 32.2 Maximum Abscissa to Top* (RKEF250 To RKEF500) H1 47.5 Maximum Overall Width with Lead Protrusion (RKEF050 To RKEF185) C1 43.2 Maximum Overall Width with Lead Protrusion* (RKEF250 To RKEF500) C1 58 Maximum Overall Width without Lead Protrusion (RKEF050 To RKEF185) C2 42.5 Maximum Overall Width without Lead Protrusion* (RKEF250 To RKEF500) C2 57.0 Maximum Lead Protrusion L1 1.0 Maximum Protrusion of Cut-Out L 11.0 Maximum Protrusion beyond Hold-down Tape I2 Not Specified — ± 0.3 Sprocket Hole Pitch P0 12.7 Device Pitch (RKEF050 To RKEF185) — 12.7 ± 0.3 Device Pitch (RKEF250 To RKEF500) — 25.4 ± 0.61 Pitch Tolerance — 20 Consecutive ±1 Tape Thickness T 0.9 Maximum Overall Tape and Lead Thickness (RKEF050 To RKEF185) T1 1.5 Maximum Overall Tape and Lead Thickness (RKEF250 To RKEF500) T1 2.3 Maximum Splice Sprocket Hole Alignment — 0 ± 0.3 Body Lateral Deviation h 0 ± 1.0 Body Tape Plane Deviation p 0 ± 1.3 ± 0.7 Ordinate to Adjacent Component Lead (RKEF050 To RKEF300) P1 3.81 Ordinate to Adjacent Component Lead (RKEF375 To RKEF500) P1 7.62 ± 0.7 Lead Spacing* (RKEF050 To RKEF300) F 5.05 ± 0.75 Lead Spacing* (RKEF375 To RKEF500) F 10.15 ± 0.75 Reel Width (RKEF050 To RKEF185) W2 56.0 Maximum Reel Width* (RKEF250 To RKEF500) W2 63.5 Maximum A 370.0 Maximum Space between Flanges* (RKEF050 To RKEF185) W1 48.0 Maximum Space between Flanges* (RKEF250 To RKEF500) W1 55.0 Maximum C 26.0 ± 12.0 Reel Diameter Arbor Hold Diameter Core Diameter* N 91.0 Maximum Box — 64/372/362 Maximum Consecutive Missing Places — None — Empty Places per Reel — 0.1% Maximum *Differs from EIA specification. © 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 10/22/18 PolySwitch® Resettable PPTCs Radial Leaded > RKEF Series Tape and Reel Diagrams h p h p Reference Plane H1 P1 H1 F A L H0 B D4 C2 C1 H W5 W I2 L1 P0 D0 Figure 1 Direction of Unreeling Cross Section A-B t Reel Upper Side n Type a Direction of Unreeling Lower Side c w1 w2 Cross Section Optional Shape: Circular or Polygonal Figure 2 WARNING • Users should independently evaluate the suitability of and test each product selected for their own application. • Operation beyond the maximum ratings or improper use may result in device damage and possible electrical arcing and flame. • These devices are intended for protection against damage caused by occasional overcurrent or overtemperature fault conditions and should not be used when repeated fault conditions or prolonged trip events are anticipated. • Contamination of the PPTC material with certain silicone-based oils or some aggressive solvents can adversely impact the performance of the devices. • Device performance can be impacted negatively if devices are handled in a manner inconsistent with recommended electronic, thermal, and mechanical procedures for electronic components. • PPTC devices are not recommended for installation in applications where the device is constrained such that its PTC properties are inhibited, for example in rigid potting materials or in rigid housings, which lack adequate clearance to accommodate device expansion. • Operation in circuits with a large inductance can generate a circuit voltage (Ldi/dt) above the rated voltage of the device. 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 www.littelfuse.com/disclaimer-electronics. © 2018 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 10/22/18