High Value Surface Mount Resistor Wrap-around terminations for soldering Organic Protection HR Series Tin/lead Solder • 100M ohms to 50G ohms • Low voltage coefficient of resistance Thick Film Conductor Nickel Electrical Data IRC Type Resistance Range (ohms) (measured at 10 volts) Limiting Element Voltage (volts) Operating Temp. Range (°C) TCR (ppm/°C) (measured at 10 volts) 0805 100M to 50G 100 -55 to +125 0 to -2000 1005 100M to 50G 150 -55 to +125 0 to -1500 1206 100M to 50G 200 -55 to +125 0 to -1000 Resistance Tolerance (%) 100M to 1G: 5, 10 >1G to 50G: 25, 50 Power Rating: The high resistance value of these devices is such that power dissipation is always small. The rating is therefore determined by voltage considerations only, as shown in the table above. Thickness: Contruction: The thickness of these devices depend on the size of the chip. The resistor material is screen printed onto a 96% alumina substrate and The table below shows the standard substrate thickness used covered with a protection comprising of a glaze followed by an organic (mm). coating. This construction gives an insulated device. Terminations: Wrap-around terminations on HR resistors have good ‘leach’ resistance STYLE 0805 1005 1206 properties. They will withstand immersion in solder at 260°C for 30 Planar 0.4 0.63 0.5 seconds. Wrap-around 0.4 N/A 0.5 Marking: All relevant information is recorded on the primary package or reel. F = Wrap-around; G = Planar Gold. Environmental Data Actual Maximum Typical Load at rated power: 1000 hours at 70°C ∆R% 2 1 Shelf life: 12 months at room temperature ∆R% 2 1 Dry heat: 1000 hrs at 125°C ∆R% 2 0.5 Temperature rapid change ∆R% 1 0.3 Change on Wave Soldering ∆R% 1 0.5 Voltage proof volts 100 200 0.4 Voltage coefficient of resistance %volts (10V - 25V) 0805 1.0 1005 0.8 0.5 1206 0.2 0.05 General Note IRC reserves the right to make changes in product specification without notice or liability. All information is subject to IRC’s own data and is considered accurate at time of going to print. Wire and Film Technologies Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com A subsidiary of TT electronics plc HR Series Issue October 2008 Sheet 1 of 2 High Value Surface Mount Resistor Physical Data Planar Terminations C Res ist On T or op Face C Res ist On T or op Face Wrap Around Terminations (3 Faces) T A L W B T A L W Dimensions (Inches and (mm)) Style L W T 0805 .079 ± .012 (2.0 ± 0.3) .049 ± .008 (1.25 ± 0.2) .027 (.07) 1005 .098 ± .012 (2.5 ± 0.3) .049 ± .008 (1.25 ± 0.2) .027 (.07) 1206 .126 ± .016 (3.2 ± 0.4) .063 ± .008 (1.6 ± 0.2) .027 (.07) Planar Wrap-around Weight (g) A B* C .012 ± .006 (0.3 ± 0.15) .035 (0.9min) .012 ± .004 (0.3 ± 0.1) 0.009 .016 ± .006 (0.4 ± 0.15) 0.015 .016 ± .006 (0.4 ± 0.15) 0.020 not available .016 ± .008 (0.4 ± 0.2) .067 (1.7min) * This dimension determines the number of conductors which may pass under the surface mounted device. APPLICATION NOTES: Mounting 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 reflow soldering of wrap-around terminations. The ‘F’ terminations provide good leach properties and ensure reliable contact. Due to the robust construction, the resistor chip can be immersed completely in the solder bath for 30 seconds at 260°C. This enables the resistor to be mounted on one side of a printed circuit board and other wire-leaded components on the other side. The presence of moisture will not damage the resistor in any way. Ordering Data Specify type, reference, etc. as indicated in this example of a HR0805F 100M ohms K resistor with wrap-around terminations and packed in a waffle pack. 1005 is available in Waffle Pack only. Sample Part No. HR 0805 F 100M J W IRC Type CR Style 0805, 1005, 1206 Termination F = Wrap Around, P = Planar Gold Resistance Value (EIA 4-digit code) (100Ω and greater - First 3 significant digits plus 4th digit multiplier) Example: 100Ω = 1000; 1000Ω = 1001, 150,000Ω = 1503 (Less than 100Ω - "R" is used to designate decimal) Example: 51Ω = 51R0; 1Ω = 1R00; 0.25Ω = R250 Tolerance K = 10%; S = 25%; Y = 50% Packaging T = Tape Pack (3K per Reel), W = Waffle Pack Wire and Film Technologies Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com HR Series Issue October 2008 Sheet 1 of 2