CRT

Trimmable Surface Mount Resistors CRT Series Welwyn Components • 40% adjustment available • Wrap around terminations • Inner electrode protection Electrical Data Commercial Power rating at 70°C Resistance range Limiting element voltage TCR -55 to 125°C *Resistance tolerance at 20°C Standard values Ambient temperature range °C watts ohms volts ppm/°C % CRT0805 0.1 10R to 1M 100 CRT1206 0.125 10R to 1M 200 250 ± 20 E24 -55 to 125 CRT1210 0.25 10R to 1M 200 *Tolerance +0-30% is available. Physical Data Dimensions (mm) & Weight (g) Type CRT0805 L +0.2 2.0 -0.1 +0.1 CRT1206 3.2 -0.15 +0.10 CRT1210 3.2 -0.15 W +0.2 1.25 -0.1 +0.1 1.6 -0.15 +0.1 2.6 -0.15 0.5±0.2 0.5±0.2 0.4±0.2 A T +0.15 0.50 -0.05 -0.15 0.55 -0.05 +0.15 0.55 -0.05 L A W A Wrap-around terminations (3 faces) T Construction The chips have a high alumina substrate (96% minimum) with ruthenium oxide resistance element and silver palladium, nickel and solder plated terminations. A glass dielectric coat is applied to the resistive element. Marking All relevant information recorded on the reel. Solvent Resistance The chips are resistant to all normal industrial cleaning fluids suitable for printed circuits. Terminations Solderability The terminations meet the requirements of IEC 115-1, Clause 4.17.3.2. General Note Welwyn Components reserves the right to make changes in product specification without notice or liability. All information is subject to Welwyn’s own data and is considered accurate at time of going to print. A subsidiary of TT electronics plc Issue B · 03.02 © Welwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com 35 Trimmable Surface Mount Resistors CRT Series Welwyn Components Performance Data Maximum Load at rated power: 1000 hours at 70°C Derate linearly to zero from 70°C Short term overload (6.25 x rated power) Long term damp heat Temperature rapid change Resistance to solder heat ∆R% ∆R% ∆R% ∆R% 2.5 3 1 2.5 ∆R% 3 Zero at 125°C 0.4 0.5 0.1 0.2 Typical 0.4 Packaging Parts supplied Tape and Reel 5000 pieces per 7” reel as per IEC 286-3. © Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com 36 Issue B · 03.02