Flame-Proof Power Metal Oxide Film Resistors Key Features Type ROX Series High Power with Small Size for Space Saving Excellent Long Term Stability Complete Flameproof The resistive element comprises a metal oxide film deposited on a ceramic Construction former. The element is protected by a flameproof coating which will withstand overload conditions without flame or mechanical damage. They are Controlled recommended for use in applications such as line protection etc Temperature Capability Characteristics Electrical Solvent Rated Max. Max. Dielectric Resistance Operating Resistant Coat Type Power Working Overload Withstand Range Temp. 70C Voltage Voltage Voltage Range and Code ROX025 0.25W 250V 400V 250V 0.3 ~ 50K ROX05 0.5W 250V 400V 250V 0.3 ~ 330K Special Lead ROX1 1W 350V 600V 350V 0.1 ~ 470K Formations ROX2 2W 350V 600V 350V 0.1 ~ 560K Possible ROX3 3W 500V 800V 500V 5.0 ~ 100K ROX5 5W 750V 1000V 750V 5.0 ~ 150K ROX7 7W 750V 1000V 750V 20 ~ 150K ROX8 8W 750V 1000V 750V 30 ~ 200K ROX9 9W 750V 1000V 750V 50 ~ 200K ROX05S 0.5W 250V 400V 250V 0.3 ~ 50K ROX1S 1W 350V 600V 350V 0.3 ~1M0 ROX2S 2W 350V 600V 350V 0.3 ~ 1M0 ROX3S 3W 350V 600V 350V 0.3 ~ 1M0 ROX4S 4W 500V 800V 500V 5.0 ~ 100K ROX5SS 5W 500V 800V 500V 5.0 ~ 100K ROX5S 5W 500V 800V 500V 5.0 ~ 150K Resistors shall have a rated direct-current (DC) continuous working voltage or an approximate sine-wave root-mean-square (RMS) alternating-current (AC) continuous working voltage at commercial line frequency and waveform corresponding to the power rating , as determined from the following formula : RCWV = P x R Where : RCWV = Rated DC or RMS AC continuous working voltage at commercial-line frequency and waveform (volt) P = Power Rating (watt) R = Nominal Resistance (ohm) Rated Voltage = RCWV or Max. Working Voltage, whichever is smaller Dimensions in Dimensions Shown for 1773271 Rev. H 11/2020 For Email, phone or live chat, millimetres unless reference purposes only. go to: www.te.com/help otherwise specified Specifications subject to change Small Size Normal Size -55 ~ 155C Flame-Proof Power Metal Oxide Film Resistors Environmental Characteristics Test Methods Characteristics Specification ( JIS C 5201-1 ) 5.1 The limit of error of Must be within the specified measuring apparatus shall not DC. Resistance tolerance exceed allowable range or 5% of resistance tolerance 5.2 Natural resistance change per TCR temp. degree centigrade. Range (PPM/C) . ~ 200 R -R Temperature x 10 (PPM/ ) . ~ K 350 R (t -t ) Coefficient R : Resistance value at room 101K ~ 1M -700 temperature (t ) 1.1M ~ 10M -1500 R : Resistance value at room temp. plus 100 (t ) 5.5 Permanent resistance change Resistance change rate is after the application of a Noral Size : % + .5 Max. potential of 2.5 times RCWV or Short time Sall Size : % + .5 Max. the max. overload voltage overload with no evidence of mechanical respectively specified in the damage above list, whichever less for 5 seconds 5.7 Resistors shall be clamped in the trough of a 90 metallic V- Dielectric No evidence of flashover block and shall be tested at AC Withstanding mechanical damage, arcing or potential respectively specified in Voltage insulation break down the electrical characteristics table for 60 + 10/ -0 seconds 6.1 Direct load: Resistance to a 2.5 kgs direct load for 10 secs. in the direction of the longitudinal axis of the terminal leads Twist test: No Evidence of mechanical Terminal leads shall be bent Terminal Strength damage through 90 at point of about 6mm from the body of the resistor and shall be rotated through 360 about the original axis of the bent terminal in alternating direction for a total of 3 rotations. 6.4 Permanent resistance change Resistance change rate is: when leads immersed to 3.2 mm Resistance to % + .5 Max. with o to 4.8 mm from the body in soldering heat evidence of mechanical damage 350 10 solder for 3 0.5 seconds 6.5 The area covered with a new , smooth, clean , shiny and continuous surface free from Solderability 95 % coverage Min. concentrated pinholes. Test temp. of solder: 245 3 Dwell time in solder : 2 ~ 3 seconds Dimensions in Dimensions Shown for 1773271 Rev. H 11/2020 For Email, phone or live chat, millimetres unless reference purposes only. go to: www.te.com/help otherwise specified Specifications subject to change