Surface Mounted Surface Mounted Resistors Surface Mounted Resistors Resistors CR Series Welwyn Components Welwyn Components CR Series s CECC released products *CRCECC released products Series high temperature and overload screened s 100% *s CECC 100% high temperature andreliability overload screened versions available for high applications released products versions for high reliability applications s Terminations available for wire bonding or soldering highavailable temperature and overload screened s 100% * versions Terminations available for wire bonding or soldering s Available in for sizes down to 0503 available high reliability applications for wire bondingohms or soldering s Resistance range 1 ohm *s Terminations Available inavailable sizes down to to100M 0503 s Available in sizes down to 0503 s Tolerances down to 0.1% * Resistance range 1 ohm to100M ohms ohm to100M s Solderrange terminations have a ohms nickel barrier layer *ss Resistance Tolerances down1 to 0.1% Tolerances down to available 0.1% s Shorting Links *s Solder Solder terminations have a nickel barrier layer terminations have a nickel barrier layer *s Shorting ShortingLinks Linksavailable available Electrical Data Commercial Electrical Data Power rating at 70C CR0503 CR0805 CR1005 CR1206 CR2010 CR2512 Notes watts 0.063 0.125 0.125 0.25 0.5 1.0 Resistance range ohms 1R to511M Comme rcial CR0501R 3 to 10M CR0805 CR101R 05 to 100M CR1206 CR2010 CR2 2 Notes Power rating at element 70C voltage watts volts 0.063 50 0.125 100 0.125 150 0.25 200 0.5 Limiting 400 1.0 500 Resistance ohmsppm/C 1R to 10M 1R to ohms 100M350: 10 to 100 ohms 200: 1R to 1M TCRrange -55 to +155C <10 Limiting element voltage volts 50 100 400250 500 100150 to 1M ohm 200 100: >1M ohm TCR -55 ppm/C <10 ohms 350:010 Resto ist+155C ance tolerance % .1, to 0.2100 5, 0.ohms 5, 1, 2200: ,5 See table of value ranges 100 to 1M ohm 100: Ambient temperature range C -5>1M 5 to 1ohm 55 250 Resistance tolerance % 0.1, 0.25, 0.5, 1, 2, 5 See table of value ranges AmbienCtEtCeC mp ge C 4e0r4a0tu 1r-e00ra4nRequirements CR0805 -55 to 155 CR1206 Power rating at 70C watts CECC 4R0e4s0is1ta-0n0c4 e rRequirements ange ohms Power rating at element 70C voltage watts volts Limiting ResistanTCR ce ra n g e ohmsppm/C -55C to +125C Limiting element voltage volts TCR +20C to +70C ppm/C TCR -55C to +125C ppm/C Resistance tolerance % TCR +20C to +70C ppm/C Ambient temperature range C Resistance tolerance % Ambient temperature ranRequirements ge C CECC 40401-008 Power rating at 70C watts CECC 40401-008 Requirements Resistance range ohms Power rating at 70C watts Limiting element voltage volts Resistance range ohms TCR -55C to +155C ppm/C Limiting element voltage volts TCR -55C to +155C ppm/C Resistance tolerance % A m b i e n t t e m p e r a t u r e r a n g e C Resistance tolerance % 0.125 0.25 CR0805 R1206 1R to 10CM 0.125 100 0.25 200 1 R t o 1 0 M <10 ohms 200: 10 to 1M 100: >1M 200 100 200 <10 ohms 200: 10 to 1M 50: >1M 100 <10 ohms 200: 10 to 1M 100: >1M 200 0.5, 1, 2, 5 See table of value ranges <10 ohms 200: 10 to 1M 50: >1M 100 -55 to +125 0.5, 1, 2, 5 See table of value ranges -55 to +125 CR0805 CR1206 CR2010 CR2512 0.125 0.25 0.5 1.0 CR0805 CR1206 CR2010 CR2512 1R to 10M 1R to 10M 1R to 1M 1R to 1M 0.125 0.25 0.5 1.0 100 200 400 500 1R to 10M 1R to 10M 1R to 1M 1R to 1M <10 ohms 200: 10 to 1M ohms 100: 100 200 400 500 >1M ohms 250 <10 ohms 200: 10 to 1M ohms 100: 1, 0.2250 5, 0.5, 1, 2, 5 See table of value ranges >1M0.ohms 5 5 t o 1 5 5 0.1, 0.25, 0.5, 1, 2, 5 See table of value ranges Ambient temperature range C CECC 40401-003 Requirements at 70C watts CECC 4Power 0401-0rating 03 Requirements Resistance range Power rating at 70C watts ohms Limiting Resistance rangeelement voltage ohms volts R -55Cvoltage to +125C LimitingTCelement voltsppm/C -55 to 155 CR0805 CR1206 0.063 CR0805 CR1206 0.125 1R to 3M 0.063 0.1251R to 5M 1R to 3M 100 1R to 5M 200 <5 ohms 500: 200 5 to 10 ohms 350: 100 250 TCR -55C to +125C ppm/C <5 oh10 msto503M 0: 5ohms to 10100: ohm>3M s 350ohms : Resistance tolerance % 0.25,>3M 0.5, ohms 1, 2, 5250 10 to 3M ohms 100: ieln C ResistanAcm e bto ertatnecm eperature range % 0.25, 0.5, -15,52t,o5125 AmbieThese nt tetables mpeindicate rature the ranCECC ge specification C requirements, and these are met or exceeded -by 55thetocorresponding 125 CR series products See table of value ranges See table of value ranges These tables indicate the CECC specification requirements, and these are met or exceeded by the corresponding CR series products Values Values Thermal impedance Thermal impedance C/watt C/watt 800 800 360 E24 & E96 preferred 6 preferred 200 360 E24 & E9290 290 200 80 80 70 Any value to order to order 70 Any value Mounted on custom Mounted ondesigned custom PCB's designed PCB's General Note Welwyn General NoteComponents reserves the right to make changes in product specification without notice or liability. General Note information is subject Welwyn's own data and is considered accurate at timenotice of going to print. Welwyn All Components reserves the to right to make changes in product specification without or liability. A subsidiary of TT reserves theto right to make changes in product specification without notice or liability. TT electronics plc A subsidiary of Allelectronics information is subject Welwyn's own data and is considered accurate at time of going to print. TT electronics plc (c) Welwyn * Bedlington, Northumberland NE22 All information is subjectComponents to TT electronics'Limited own data and is considered accurate at time of 7AA, goingUK to print. www.bitechnologies.com www.irctt.com www.welwyn-tt.com 11. 09 07 . 07 (c) Welwyn Components Bedlington, NE22 7AA, UK Telephone: +44 (0) 1670Limited 822181 * *Facsimile: +44Northumberland (0) 1670 829465 * Email: info@welwyn-tt.com * Website: www.welwyn-tt.com 09 0711. . 07 Telephone: +44 (0) 1670 822181 * Facsimile: +44 (0) 1670 829465 * Email: info@welwyn-tt.com * Website: www.welwyn-tt.com (c) TT electronics plc 10. 11 17 17 Surface Mounted Surface Mounted Resistors Resistors Welwyn Components CR Series CR Series Physical Data Dimensions of Standard Styles (mm) & Weight (g) Wrap around Style L W T max 0503 1.250.2 0.63.15 0.5 0805 2.00.2 1.250.15 0.6 A B Not available 0.30.15 1005 2.50.3 1.250.2 0.7 1206 3.20.2 1.60.2 0.7 0.40.2 2010 5.10.3 2.50.2 0.7 2512 6.50.3 3.20.2 0.7 C Wt 0.200.1 0.005 0.30.1 0.009 0.9 min Not available T 0.40.15 0.015 1.7 min 0.40.15 0.020 0.60.3 3.0 min N/A 0.036 0.60.3 4.4 min N/A 0.055 C A B L A C W T Wrap-around terminations (3 faces) L W Planar terminations Alternative styles for surface mounting resistors This dimension determines the number of conductors which may pass under the surface mounted device. Construction Solderability Thick film resistor material, overglaze and organic protection are screen printed on a 96% alumina substrate. Terminations Wrap-around terminations have an electroplated nickel barrier and solder coating, this ensures excellent `leach' resistance properties and solderability. They will withstand immersion in solder at 260C for 30 seconds. Planar (or single-sided) termination is gold and suitable for wire-bonding; wrap-around is suitable for soldering. Marking All relevant information recorded on the primary package or reel. Performance Data CECC 40401-008 CECC40401-004 CECC40401-003 Actual Requirements Requirements Requirements Maximum Typical 3M3 2 2 0.25 0.1 0.02 0.1 Load at rated power: 1000 hours at 70C R% 2 2 Shelf life: 12 months at room temp. R% - - - Zero at 155C Zero at 125C Zero at 125C >3M3 3 Derating from rated power at 70C Overload R% 0805:1 1206:0.5 0.5 2 1 Dry Heat: 1000 hours at UCT R% 2 1 3M3 2 to 10M 1 0.2 >3M3 3 >10M 2 >10M 1 (125C for 003 & 004 - 155C for 008) Long term damp heat R% 2 2 2 1 0.25 Temperature rapid change R% 0.5 0.5 1 0.25 0.05 Resistance to solder heat R% 0.5 2 0.25 Voltage proof volts 0.5 0.05 0805 : 200 1206 : 300 0503 : 100 2010 : 400 2512 : 500 All others : 500 Note: An 0.01 ohm addition to be added to the performance of all resistors <10 ohms Value Ranges (ohms) Tolerance % Size 5 2 1 0.5 0.25 0.1 0503 1 to 10M 1 to 10M 10 to 10M 100 to 1M N/A N/A 0805 1 to 100M 1 to 50M 1 to 20M 10 to 10M 100 to 1M 100 to 1M 1005 1 to 100M 1 to 50M 1 to 20M 10 to 10M 100 to 1M 100 to 1M 1206 1 to 100M 1 to 50M 1 to 25M 10 to 10M 100 to 1M 100 to 1M 2010 1 to 1M 1 to 1M 1 to 1M 10 to 10M 100 to 1M N/A 2512 1 to 1M 1 to 1M 1 to 1M 10 to 10M 100 to 1M N/A General Note (c) Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 Facsimile: +44in(0)product 1670 829465 * Email: info@welwyn-tt.com TT electronics reserves the822181 right to *make changes specification without notice or liability.* 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 Surface Mounted Surface Mounted Resistors Resistors Welwyn Components CR CR Series Series Application Notes Operating Temperature Range Packaging The chips themselves can operate at a maximum temperature of 155C (see performance claims above). For soldered chips, the joint temperature should not exceed 110C. This condition is met when the stated power levels at 70C are used. Wrap-around Termination Chip resistors are supplied taped and reeled on standard 8mm tape to IEC 286-3. Mounting Planar Terminations This chip resistor is ideally suited for handling by automatic methods due to its rectangular shape and the small dimensional tolerances. Electrical connection to a ceramic substrate or to a printed circuit board can be made by wire bonding (eg suffix `G' in CR0805G) or by reflow soldering of wrap-around terminations (eg suffix `F' in CR0805F). Resistor chips are supplied in waffle packs. Quantity per reel; 3000 max. The `F' terminations provide good leach properties and ensure reliable contact. Due to the robust construction the resistor chip can be immersed in the solder bath for 30 seconds at 260C. This enables the resistor to be mounted on one side of a printed circuit board and other wire-leaded components on the other side. Ordering Procedure Example: CR2512 with solderable wraparound terminations at 10 kilohms and 1% tolerance on a reel of up to 1800 pieces CR2512F- 10KFI Type Termination F G Solderable wraparound Gold pad planar 0805, 1206, 2010, 2512 only All sizes Value (use IEC62 code) Tolerance (use IEC62 code) B 0.1% C 0.25% Packing I Tape Waffle D 0.5% F 1% G 2% J 5% 0805F, 1206F, 2010F 2512F G Termination Up to 3000/reel Up to 1800/reel Standard For CECC released product state on order the CECC number. Example: CR2512F-10KFI CECC40401-008 For SnPb finish instead of Pb-free replace the packing suffix with PB. Example: CR2512F-10KFPB For zero-ohm jumper chips use the dummy value & tolerance code R005J 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. www.bitechnologies.com www.irctt.com www.welwyn-tt.com (c) Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 (c) TT electronics plc822181 * Facsimile: +44 (0) 1670 829465 * Email: info@welwyn-tt.com * Website: www.welwyn-tt.com 11 . 09 10. 11 19