TM Metal Glaze General Purpose TM Metal GlazeTM GeneralPurpose Purpose Glaze General Surface Mount Power Resistors Surface Mount Power Resistors Welwyn Components Welwyn Components CHP Series CHP Series CHP Series * Up to 2 watts Up to 22 watts * Up watts *to0.1 ohm to 2.2 megohm range 0.1 ohm to 2.2 megohm range megohm * 0.1 ohm * Upto to2.2 1000 volts range Up to 1000 volts * Up to 1000 volts * 150C maximum operating temperature 150C maximum operating temperature * 150C maximum operating temperature * * * * Electrical Data Electrical TypeData Maximum Working Maximum Resistance Tolerance TCR Product Power Rating Voltage1 Voltage Range2 (%)2 (ppm/C)2 Category Maximum Working Maximum Resistance Tolerance TCR Product (watts) (volts) (volts) (ohms) Power Rating Voltage1 Voltage Range2 (%)2 (ppm/C)2 Category 0R1 to 0R99 1, 2, 5 100 Low Range (watts) (volts) (volts) (ohms) Type CHP1/8 CHP1/8 0.25 @ 70C 0.25 @ 70C CHP1/2 CHP1/2 0.5 @ 70C CHP1 CHP2 400 0R1 to 0R99 1R0 to 1M 1, 2, 5 1, 2, 5 100 50, 100 Low RangeStandard 20R to 348K Tight Tolerance 1R0 to 1M 1, 2, 5 0.25, 0.5 50, 100 50, 100Standard 0R1 to 0R99 Low Range 20R to 348K 0.25, 0.5 1, 2, 5 50, 100 100 Tight Tolerance 600 1R0 to 348K 1, 2, 5 50, 100 0R1 to 0R99 1, 2, 5 100 Low RangeStandard 400 300 300 1 @ 70C 600 0R1 to 0R99 1R0 to 348K 1, 2, 5 1, 2, 5 50, 100 350 1 @ 70C CHP2 350 2 @ 25C 1.33 @ 70C 2 @ 25C 700 0R1 to 0R99 1R0 to 2M21 1, 2, 5 1, 2, 5 100 500 500 1000 1000 0R1 to 0R99 20R to 348K 0.25, 0.5 1, 2, 5 50, 100 1R0 to 2M21 0R1 to 0R99 1, 2, 5 1, 2, 5 100 1R0 to 2M21 1, 2, 5 Performance Characteristics Performance Characteristics Characteristics Maximum Change 2 Characteristics Temperature Temperature Thermal Shock 100 StandardLow Range 50, 100 Low RangeStandard 20R to 348K Tight Tolerance 1R0 to 2M21 1, 2, 5 0.25, 0.5 50, 100 50, 100Standard 700 @ 70C PxR Not to exceed1.33 2 ConsultPxR factory for tighter TCR, tolerance or resistance values Not to exceed Consult factory for tighter TCR, tolerance or resistance values 1 1 200 0.5 @ 70C CHP1 200 Maximum Change As Specified As Specified 0.5% +0.01 ohm 100 Low Range Tight Tolerance 50, 100 Low RangeStandard 50, 100 Standard Test Method Method MIL-R55342E Test Par 4.79 (-55C =125C) MIL-R55342E Par 4.79 Par (-55C =125C) MIL-R55342E 4.7.3 (-65C +150C, 5 cycles) Thermal Shock Low Temperature Operation 0.5% +0.01 ohm 0.25% +0.01 ohm Low Temperature Operation Short Time Overload 0.25% +0.01 0.5%ohm +0.01 ohm MIL-R-55342E Par 4.7.4Par (-65C MIL-R-55342E 4.7.5@ working voltage) Short Time Overload 0.5%+1% +0.01for ohm R>100K ohm MIL-R-55342E PxR4.7.5 for 5 seconds 2.5 x Par High Temperature Exposure +1% for R>100K 0.5% ohm +0.01 ohm MIL-R55342E Par 4.7.3 Par (-65C +150C, MIL-R-55342E 4.7.4 (-65C 5@cycles) working voltage) for 5 secondsPar 4.7.6 (+150C for 100 hours) 2.5 x PxR MIL-R-55342E High Temperature ResistanceExposure to Bonding Exposure 0.5% +0.01 ohm0.01 ohm 0.25% MIL-R-55342E Par 4.7.6Par (+150C for 100 soldered hours) to board at MIL-R-55342E 4.7.7 (Reflow Resistance to Bonding Exposure 0.25% 0.01 ohm MIL-R-55342E (Reflow soldered to board at 260CPar for4.7.7 10 seconds) Solderability Solderability Moisture Resistance 10 seconds) Method 208 (245C for 5 seconds) 95% minimum coverage 260C forMIL-STD-202, 95% minimum coverage 0.5% +0.01 ohm MIL-STD-202, Method 208 (245C(10 forcycles, 5 seconds) MIL-R-55342E Par 4.7.8 total 240 hours) Moisture Life Resistance Test 0.5% +0.01 ohm 0.5% +0.01 ohm MIL-R-55342E Par 4.7.8Par (104.7.10 cycles,(2000 total 240 MIL-R-55342E hourhours) at 70C intermittent) Life Test Terminal Adhesion Strength Terminal Adhesion Strength 0.5% +0.01 1%ohm +0.01 ohm 1% +0.01 ohm no mechanical change MIL-R-55342E Par 4.7.10 hour at 70C intermittent) 1200 gram push (2000 from underside of mounted chip 1200 gram push from underside of mounted chip for 60 seconds for 60 seconds Chip mounted in center of 90mm long board, deflected Resistance to Board Bending Resistance to Board Bending no mechanical change 1% +0.01 ohm 1% +0.01 ohm Chip mounted in center of 90mm long 5mm so as to exert pull on chipboard, for 10deflected seconds 5mm so as to exert pull on chip for 10 seconds General Note General Welwyn Note Components reserves the right to make changes in product specification without notice or liability. All information is subject to Welwyn's own datainand is considered accurate at time of going to print. General Note Welwyn Components reserves the right to make changes product specification without notice or liability. A subsidiary of TT electronics plc A subsidiary of TT theto right to make changes in product specification without notice or liability. All electronics informationreserves is subject Welwyn's own data and is considered accurate at time of going to print. (c) Welwyn Components Limited * Bedlington, Northumberland NE22 7AA, UK TT electronics plc All information is subject to TT electronics' own data and is considered accurate at time of going to print. Issue C * 05.03 Telephone: +44 (0) 1670 822181* *Bedlington, Facsimile: +44 (0) 1670 829465 info@welwyn-tt.com * Website: www.welwyn-tt.com www.irctt.com www.welwyn-tt.com www.bitechnologies.com (c) Welwyn Components Limited Northumberland NE22* Email: 7AA, UK Telephone: +44 (0) 1670 822181 * Facsimile: +44 (0) 1670 829465 * Email: info@welwyn-tt.com * Website: www.welwyn-tt.com (c) TT electronics plc Issue C * 05.03 10. 11 43 43 TM Metal Purpose MetalGlazeTM GlazeGeneral General Purpose Surface Mount Power Resistors Surface Mount Power Resistors Welwyn Components CHP Series CHP Series CHP Power Derating Curve CHP Repetitive Surge Curve 1000 100% Peak Power (watts) Percent Relative Power 120% CHP 1/8, 1/2, 1 80% 60% CHP 2 40% 100 CHP 2 CHP 1 CHP 1/2 10 CHP 1/8 20% 0% 30 50 70 90 110 130 1 0.0001 150 .1msec Ambient Temperature (oC) 0.0010 1msec 0.0100 10msec 0.1000 100msec 1.0000 10000msec Surge or pulse duration (seconds) Note: Use for repetitive pulses where the average power dissipation is not to exceed the component rating at 70C. Surge handling capacity for low-repetitive surges may be significantly greater than shown above. Contact factory for recommendations. Physical Data Size Code Industry Footprint L Dimensions (mm) W C 1206 3.250.18 1.450.15 0.510.25 CHP1/8 CHP1/2 2010 5.080.25 2.010.15 0.7610.25 CHP1 2512 6.380.25 2.010.15 1.020.25 CHP2 3610 9.320.25 2.670.15 1.270.25 L C W Ordering Procedure Example: CHP1 at 100 ohms, 1% tolerance and 100ppm/ C on a reel of 1500 pieces CHP1- 100RFI Type Size TCR - 50 100ppm/ C 50ppm/ C Value (use IEC62 code) Tolerance (use IEC62 code) C D F 0.25% 0.5% 1% Packing I Tape G 2% J 5% CHP1/8 CHP1/2, CHP1, CHP2 2500/reel 1500/reel Standard General Note (c) Welwynreserves Components Bedlington, Northumberland NE22 7AA, UKor liability. TT electronics the right toLimited make changes in product specification without notice 44 Issue C * 05.03 Telephone: +44 (0) 1670 822181 * Facsimile: +44 (0) 1670 829465 * Email: info@welwyn-tt.com * Website: www.welwyn-tt.com All information is subject to TT electronics' own data and is considered accurate at time of going to print. www.bitechnologies.com www.irctt.com www.welwyn-tt.com (c) TT electronics plc 10. 11