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WRM0207V-1K0JI Datasheet(PDF) 1 Page - Welwyn Components Limited |
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WRM0207V-1K0JI Datasheet(HTML) 1 Page - Welwyn Components Limited |
1 / 3 page Dimensions (mm) and weight (g) Type L D D1 K Weight max max max min WRM 0102 2.2 1.1 1.1 0.35 0.01 WRM 0204 3. 6 1.4 1.4 0.5 0.02 WRM 0207 6. 0 2. 2 2.2 1.1 0.08 Mini Melf Resistors WRM Series • High reliability • Predictable pulse handling capability • Tolerances down to 0.1% • TCR down to 5 ppm/°C 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. © 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 WRM 0102 WRM 0204 WRM 0207 Power rating at 70°C watts 0.2 0.25 0.4 Resistance range ohms R22 – 2M21 R22 – 10M R22 – 8M2 Limiting element voltage volts 150 200 250 TCR ppm/°C 15, 25, 50 5, 15, 25, 50 25, 50 Resistance tolerance % 0.1, 0.25, 0.5, 1.0, 2, 5 Standard values E24 & E96 Thermal impedance k/W 250 200 140 Ambient temperature range °C -55 to +125 Insulation resistance ohms >1010 Electrical Data Physical Data Issue D · 09.06 A subsidiary of TT electronics plc Welwyn Components L K L1 D D1 Construction A metal film is deposited onto a high dissipation ceramic former to which tin plated teminating caps are fitted. The resistor is adjusted to value by a helical cut in the film and the body is protected by a lacquer coating. Marking Resistance values are colour coded with 4 or 5 bands depending on type. Terminations Material Plated steel cap. Solderability The pure tin finish produces ageing free contacts on which low melting solders can be used. Dipped area shall be covered with a smooth and bright solder coating after 3 seconds immersion at 215°C. Solvent Resistance The body protection and marking are resistant to all normal industrial cleaning solvents suitable for printed circuit boards. |
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