EMC2-33RKI

Resistors Pulse Withstanding Fusible Flameproof Metal Film Resistors EMC Series UL1412 recognised* Failsafe 240V mains fusing Good pulse handling capability Small size for power rating UL94-V0 flameproof protection Surface mount ZI-form option * Values 22R and above. UL file number E234469 All parts are Pb-free and comply with EU Directive 2011/65/EU amended by (EU) 2015/863 (RoHS3) Electrical Data EMC2 Power rating at 70°C Watts 2 Resistance range Ohms 4R7 – 68R TCR (25 to 75°C) ppm/°C Isolation Voltage Volts Resistance Tolerance 100 500 % 10, 20 Standard Values E12 Thermal Impedance °C/Watt Ambient temperature range 82 °C -55 to +155 Physical Data D Dimensions (mm) & Weight (g) Type L max D max f min d nom PCB mount centres Min bend radius Wt. nom EMC2 10 4 27 0.8 15 1.2 0.55 d L f Construction The metal film is deposited onto a high purity ceramic rod. End caps are force fitted and termination wires are welded to the end caps. Finally, a cement protection is applied to the resistor body prior to marking with indelible ink. The cement protection is applied in a manner that leaves the terminations completely clear. This permits a well-defined body length (clean lead to clean lead dimension L). Terminations Material: Solder-coated copper wire Strength: The terminations meet the requirements of IEC 68.2.21 Solderability: The terminations meet the requirements of IEC 115-1 Clause 4.17.3.2 Solvent Resistance The body protection and marking are resistant to all normal industrial cleaning solvents suitable for printed circuits. General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics’ own data and is considered accurate at time of going to print. BI Technologies IRC Welwyn www.ttelectronics.com/resistors © TT Electronics plc 11.20 Pulse Withstanding Fusible Flameproof Metal Film Resistors EMC Series Flammability The resistor coating is UL94-V0 rated and will not burn or emit incandescent particles under any condition of applied temperature or power overload. Marking EMC resistors are colour coded with five bands. Four of the bands indicate value and tolerance in accordance with IEC62. Parts with 20% tolerance have no fourth band. A fifth yellow band denotes constant voltage fusibility. Performance Data Maximum Load at Rated Power: 1000hrs @ 70°C ΔR% 5 Shelf life: 12 months at room temperature ΔR% 2 Derating from rated power at 70°C Zero at 155°C ΔR% Climatic 3 Climatic Category 50/155/56 Temperature rapid change ΔR% 0.5 Resistance to solder heat ΔR% 0.5 Pulse Performance 700 700 700 600 600 600 500 500 500 400 400 400 300 300 300 200 200 200 100 100 100 000 10 20 20 30 40 50 60 70 000 10 10 20 3030 4040 5050 6060 7070 Value(Ohms) (Ohms) Value Value (Ohms) Single Rectangular Pulse Single Rectangular Pulse Single Rectangular Pulse 10000 10000 10000 Pk Power (W) Pk PkPower Power(W) (W) Pk Pk Voltage Voltage (V) (V) Pk Voltage (V) IEC61000-4-5 IEC61000-4-5 1.2/50 Pulse IEC61000-4-51.2/50 1.2/50s sPulse 1000 1000 1000 100 100 100 10 1010 1 11 0.01 0.1 0.01 0.01 0.10.1 EMC resistors fuse open circuit at overload powers exceeding 60W within the time indicated on the Fusing Characteristic. Their fusing performance at lower overload powers is not specified. Fusing Characteristic (Constant Voltage) Max. Fusing Time (s) After fusing, the resistance is at least 100 times greater than the original nominal value. 100 1000 10000 101010 100 100 1000 1000 10000 10000 Pulse Duration (ms) Pulse PulseDuration Duration(ms) (ms) Fusing Performance EMC resistors fuse safely in the event of a 115Vrms / 240Vrms overload (line / mains short circuit condition) without burning or emitting incandescent particles. 1 11 20 15 10 5 0 (4R7-8R2) (10R-68R) 40 50 60 70 80 90 100 Initial Power (W) General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics’ own data and is considered accurate at time of going to print. BI Technologies IRC Welwyn www.ttelectronics.com/resistors © TT Electronics plc 11.20 Application Notes Application Notes Pulse Withstanding Fusible 1. If the resistors are to dissipate full rated power, it is recommended that the terminations should not be soldered closer than 4mm from the body. Flameproof Metal Film Resistors (Delete redundant subtitle) 2. Due to operating temperature limits imposed by some PCB materials, derating may be necessary. An estimate of the EMC Seriestemperature rise to be expected at the center of the body can be calculated using the thermal impedance figures given under Electrical Data. 3. For the purpose of UL approval, the following points should be observed: Application Notes 3.1 To protect against fire under all conditions of overload, a positive clearance of at least 13mm should be provided between the body of the resistor and any combustible materials. positive clearance 13mm should be provided between theterminations resistor body should or terminations and uninsulated 1. If the resistors are3.2 toAdissipate full ratedofpower, it is recommended that the not be soldered closerparts thanof4mm from opposite polarity or uninsulated dead metal parts. the body. 3.3 Limited Short Circuit testing should be performed in the complete appliance. 2. Due to operating temperature imposed some PCB materials, derating may be necessary. An estimate of the temperature rise 4. ULW resistors canlimits also be suppliedby with radial, goalpost or lancet pre-formed leads. In particular ULW2, ULW3, ULW4 and to be expected can be calculated using the thermal impedance figures given under Electrical Data. ULW5 are available in ZI-form SMD format packed in blister tape – see http://www.ttelectronics.com/sites/default/files/resistors-datasheets/ZI-form.pdf (This diagram exists on WP-S, so just it) 3. To protect against fire under all conditions of overload, a positive clearance of at least 13mm should be copy provided between the body of the resistor and any combustible materials. 4. EMC resistors can also be supplied loose packed with radial, goalpost or lancet pre-formed leads - see https://www.ttelectronics.com/TTElectronics/media/ProductFiles/Resistors/ApplicationNotes/TN008-Resistors-Leadform-Capability.pdf, or in ZI-form SMD format packed in blister tape - see https://www.ttelectronics.com/TTElectronics/media/ProductFiles/Resistors/Datasheets/ZI-form.pdf Also a 2W radial taped version is available as shown below Dimension EMC2R Radial (mm) as shown below. Also a 2W radial Taped taped Dimensions version* is available Notation Nominal Tolerance (mm) Component BodyULWP2R Length Radial Taped Dimensions L 10.0 Max Dimension Component Body Diameter Component Body Length Terminal Lead Diameter Component Body Diameter Component PitchTerminal Lead Diameter Pitch of Holes Component Pitch Notation Nominal Tolerance D 4.0 Max L 10.0 Max dD 0.8 Nom 4.0 Max Pd 12.7 ±0.5 0.8 Nom PoP 12.7 ±0.2 5 ±0.5 Pitch of Holes 10 ±0.2 P1Po 3.85 ±0.3 Distance between Hole & Component 3.85 ±0.3 Distance between Hole & P2P1 5.85 ±0.5 Component 5.85 ±0.5 Lead Pitch FP2 5.0 +0.75 -0.34 Lead Pitch F 5.0 +0.75 -0.34 Width of Backing Strip W 18.0 ±0.3 Width of Backing Strip W 18.0 ±0.3 Position of Hole W1 9.0 ±0.25 Position of Hole W1 9.0 ±0.25 Diameter of Hole Do 4.0 ±0.3 Diameter of Hole Do 4.0 ±0.3 Height to Lead Form HoHo 16.0 ±0.3 Height to Lead Form 16.0 ±0.3 Height from LeadHeight Formfrom Lead Form Ho1 21.7 Ho1 17.0Max MAX Height to ResistorHeight to Resistor Ho2 18.0 Ho2 18.0Max MIN Width of Adhesive Tape W2 15.0 ±0.5 Width of Adhesive Tape W2 15.0 ±0.5 Length of protrusion