VT Series Vitreous Enamel Power Resistors RIEDON Resistances from 0.1 Ohm to 100K Ohm Tolerances to ±1% All Welded Construction High Overload and Pulse Handling Capability Supplied in Bulk and Tape & Reel Riedon's VT series, wirewound power resistors have excellent performance and reliability in a moderate package size. Coated with vitreous enamel, they can operate in temperatures to +350°C with no outgassing. SPECIFICATIONS Resistance Range Free Air Power Rating Resistance Tolerances Temperature Coefficient - 0.1 to 100K Ohms 3W, 5W, 7W, 10W, 14W ( Tambient = 25°C ) ± 5%, 10% ( Selection Available for ± 1%, 2% ) ± 200 ppm/°C Max. ( R >= 1 Ohm ) Consult Factory for R < 1 Ohm Climactic Category - 55 / 200 / 55 Environmental and other performance specifications generally Conform to BS CECC 40201-002 standards. Type Power Rating ( 25°C ) Maximum Voltage W MIN W MAX L (MAX) Dimensions in (mm) D (MAX) I (NOM) VT3 3 100 0.1 10K 0.52 (13) 0.22 (5.6) 1.18 (30) 0.032 (0.8) VT5 5 160 0.1 20K 0.91 (23) 0.28 (7) 1.18 (30) 0.032 (0.8) VT7 7 200 0.1 22K 0.87 (22) 0.32 (8) 1.18 (30) 0.032 (0.8) VT10 10 500 0.1 68K 1.50 (38) 0.32 (8) 1.18 (30) 0.032 (0.8) VT14 14 750 0.1 100K 2.13 (54) 0.32 (8) 1.18 (30) 0.032 (0.8) d Power Derating Curve L ØD Ød Ordering information: Part Number - Resistance - Tolerance Power Level % I 120 100 80 60 40 20 0 0 50 100 150 200 250 300 350 Ambient Temperature °C Example: VT-3 - 220 Ohm - 1% Riedon Inc. REV 12/02 300 Cypress Avenue Alhambra CA 91801 www.riedon.com (626) 284-9901 Fax: (626) 284-1704