Cement Power Resistors (RoHS Compliant) PRM-RC Series FEATURES 5% tolerance Exceptionally small, sturdy, and reliable Sealed with a special cement Excellent moisture resistance High temperature stability Ceramic flame retardant package Recommended wash method is alcohol DERATING CHART HEAT RISE CHART 70 155 275 140 5W, 7W, 10W 100 120 3W 80 100 2W 80 60 60 40 40 20 20 0 70 155 275 0 0 20 40 60 80 100 140 5W, 7W, 10W 100 -50 0 50 100 150 200 250 300 Rated Load (%) 120 Ambient Temperature (C) 3W 80 100 d Leads Not Centered 7&10 Watts Leads Centered 5 Watts 2W 80 60 PART NUMBERING SYSTEM d P 60 W d 5 40 P 40 2 W8 0 - P R M 5 - 1 0W K - R C P L 5 1 20 D 20 5 0 Prefix Series Watts Value Suffix 0 0 20 40 60 80 100 (RoHS Compliant) -50 0 50 100 150 200 250 300 D L 5 1 DL 5 1 Rated Load (%) SERIES, WATTAGE, VALUE RANGE, AND DIMENSIONS Ambient Temperature (C) d Leads Not Centered 7&10 Watts Leads Centered 5 Watts d P W d 5 P W W P L 5 1 D 5 D L 5 1 DL 5 1 Value Ranges () Dimensions (mm) Watts Series Leads (W) Wirewound Power Film W 1 D 1 L 1 d 0.05 P 1 PRM 5 Centered 0.1 ~ 47 48 ~ 100K 12.5 9 25 0.75 5 PRM 7 Not Centered 0.1 ~ 680 681 ~ 200K 12.5 9 38 0.75 5 PRM 10 Not Centered 0.1 ~ 910 911 ~ 200K 12.5 9 50 0.75 5 STANDARD STOCKED VALUES () All standard E-24 values not listed are available special order. 0.1 0.3 0.51 1.0 3.0 6.8 15 33 56 68 75 100 150 200 300 330 470 680 1K 2K 4.7K 10K 0.22 0.47 0.68 2.2 4.7 10 20 47 CONSTRUCTION 3 No. Subpart Name Material Material Generic Name 5 6 1 Body Rod Type Ceramics Al2O3, SiO2 Cement: Wire-wound 2 End Cap Tin plated iron surface Tin : 5%, Iron : 95% 3 Lead Annealed copper wire Tin-Coated Copper wire 4 1 2 (Electrosolder plated surface) Pb Free 5 6 3 4 Ceramic Case Ceramic Al2O3, SiO2 5 Resistance wire Ni-Cr Alloy Ni-Cr Alloy Cement: Power Film Resistance Film Metal Oxide Film Metal Oxide Film 4 1 2 6 Filling Materials Quartz mixed sand SiO2 XICON PASSIVE COMPONENTS (800) 628-0544 XC-600039 Date Revised: 5-15-17 Specifications are subject to change without notice. No liability or warranty implied by this information. Environmental compliance based on producer documentation. Percent Rated Load (%) Percent Rated Load (%) Heat Rise (C) Heat Rise (C)Cement Power Resistors (RoHS Compliant) PRM-RC Series CHARACTERISTICS Characteristics Limits Test Methods ( JIS C 5201-1 ) 5.2 Natural resistance change per temp. degree centigrade. R2-R1 6 Temperature 350 PPM / C Max. x10 (PPM / C) coefficient <20 400 PPM / C R1(t2-t1) R1: Resistance value at room temperature (t1) R2: Resistance value at room temp. plus 100 C (t2) Dielectric No evidence of flashover, 5.7 Resistors shall be clamped in the trough withstanding mechanical damage, arcing of a 90 metallic V-block and shall be tested at voltage or insulation break down AC potential respectively for 60 +10/ -0 secs. 7.4 Resistance change after continuous 5 cycles for duty shown below: Temperature Resistance change rate is Step Temperature Time cycling (2% + 0.05) Max. with no 1 -55 C 3 C 30 mins evidence of mechanical damage 2 Room temp. 10 ~ 15 mins 3 +155 C 2 C 30 mins 4 Room temp. 10 ~ 15 mins Resistance change rate is 5.5 Permanent resistance change after the Short time (5% + 0.05) Max. with no application of a potential of 2.5 times RCWV overload evidence of mechanical damage for 5 seconds Resistance value R/R 7.9 Resistance change after 1,000 hours Wire-wound 5% operating at RCWV with duty cycle of Load life in Power film: <100K 5% (1.5 hourso, 0.5 hourof) in a humidity test humidity >100K 10% chamber controlled at 40 C 2 C and 90 to 95 % relative humidity Resistance value R/R 7.10 Permanent resistance change after Load life Wire-wound 5% 1,000 hours operating at RCWV with duty cycle Power film: <100K 5% of (1.5 hours on, 0.5 hour off) >100K 10% at 70 C 2 C 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 Terminal strength No evidence of mechanical Twist test : damage Terminal leads shall be bent through 90 at a 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 Resistance change rate is 6.4 Permanent resistance change when leads Resistance to (1% + 0.05) Max. with no immersed to 3.2 to 4.8 mm from the body in soldering heat evidence of mechanical damage 350 C 10 C solder for 3 0.5 secs. 6.5 The area covered with a new , smooth clean , shiny and continuous surface free Solderability 95 % coverage Min. from concentrated pinholes. Test temp. of solder : 245 C 3 C Dwell time in solder : 2 ~ 3 seconds XICON PASSIVE COMPONENTS (800) 628-0544 XC-600039 Date Revised: 5-15-17 Specifications are subject to change without notice. No liability or warranty implied by this information. Environmental compliance based on producer documentation.