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| VSMC1506 Vishay Foil Resistors SURFACE MOUNT Bulk Metal(R) Foil Technology Discrete High Precision Surface Mount Chip Resistor FEATURES * High Precision, Low TCR * Temperature Coefficient of Resistance: Product may not be to scale Nominal TCR: 4ppm/C (0C to + 60C) 8ppm/C (- 55C to + 125C) + 25C Reference * Resistance Range: 10W to 40KW * Tolerance: to 0.01% (See table) * Load Life Stability: 0.01% maximum DR under full rated power @ + 70C for 2000 hours. * Shelf Life Stability: 50ppm/year (0.005%) maximum DR non-hermetically sealed * Voltage Coefficient: < 0.00001%/volt (< 0.1ppm/V) * Current Noise: < 0.010mV(rms)/volt of applied voltage * Non Inductive: < 0.08mH The VSMC1506 Precision Surface Mount Chip Resistor utilizes the Vishay Bulk Metal(R) Foil technology with its inherent low TCR and stability. It provides a level of performance not provided in other resistor technologies. This is a commercial version of the VSM1506 resistor. The significant difference is in the expression of the redefined limits of the TCR. The VSMC1506 has a envelope of limits compared to the standard Vishay TCR curve. The VSMC1506 with its robust full width wrap around termination ensures safe handling and provides stability during the installation process and multiple thermal excursions it will encounter in use. The excellent performance specifications of this product makes it ideal for precision analog applications. Utilizing its low TCR characteristics a voltage divider can be fashioned by using two VSMC1506 chip resistors resulting in a tracking specification < 5ppm/C. TABLE 1 - TOLERANCE VERSUS RESISTANCE VALUE VALUE (W) 100W to 40kW 50W to < 100W 25W to < 50W STANDARD TOLERANCE* (%) 0.01 0.05 0.1 FIGURE 1 - TEMPERATURE COEFFICIENT VISHAY STANDARD TCR LIMITS (0C to + 60C) + 140 + 100 +4 pp C m/ 10W to < 25W 0.25 *Tighter tolerances are available. Please contact Application Engineering. Soldering temperatures used during installation may cause resistance to shift up to 0.01%. R (ppm) DR TABLE 2 - TYPICAL PERFORMANCE SPECIFICATIONS 0 TEST -4 pp - 100 m/ C - 140 + 60 VSMC1506 MAXIMUM DR LIMITS* 0.02% 0.02% 0.02% 0.03% 0.01% 0.03% 0.01% 100 63 max. 12 max. * SWEDEN +46.8.594.70590 FAX: +46.8.594.70581 * UK +44 191 514 8237 FAX: +44 1953 457 722 * USA +1 610 407-4800 FAX: +1 610 640-9081 Thermal Shock Low Temperature Operation Short Time Overload High Temperature Exposure Resistance to Bonding Moisture Resistance 0 Temperature, C + 25 VISHAY STANDARD TCR LIMITS (- 55C to+ 125C) + 640 + 500 p pp 8p ++8 + 800 C C m/ m R (ppm) DR 0 Life 2000 hours @ + 70C -8 pp Power @ + 70C (mW) m/ - 500 - 640 - 55 + 25 C - 800 + 125 Maximum Voltage (V) Maximum Weight (mg) Temperature, C VISHAY FOIL * FRANCE +33.4.93.37.28.24 FAX: +33.4.93.37.27.31 * GERMANY +49.9287.710 FAX: +49 9287.70435 * ISRAEL +972.3.557.0945 FAX: +972.3.558.9121 *As shown + 0.01 Ohms to allow for measurement errors at low values. * ITALY + 39.2.300.11919 FAX: +39.2.300.11999 * JAPAN +81.42.729.0661 FAX: +81.42.729.3400 * SINGAPORE +65.788.6668 FAX: +65.788.0988 www.vishay.com 62 Document Number: 63077 Revision 02-May-02 VSMC1506 Bulk Metal(R) Foil Technology Vishay Foil Resistors Discrete High Precision Surface Mount Chip Resistor SURFACE MOUNT FIGURE 2 - RECOMMENDED MOUNTING FIGURE 3 - DERATING CURVE Percent of Rated Power 125 100 75 50 25 0 -75 -55C +70C Rated Power 25% to 85% of T A low profile solder fillet is recommended to avoid unnecessary stresses along top edge of metallization. IR and vapor phase reflow are best. Avoid the use of cleaning agents which could attack epoxy resins, which form part of the resistor construction. -50 -25 0 +25 +50 +75 +100 +125 +150 +175 Ambient Temperature (C) TABLE 3 - CHIP SIZE AND LAND PATTERN DIMENSIONS in inches [millimeters] Bottom View for Mounting Uncoated Ceramic L X T D W G Z Footprint Recommended Land Pattern L W 0.005 [0.13] 0.150 [3.81] 0.005 [0.13] 0.062 [1.57] T MAXIMUM 0.025 [0.64] D 0.005 [0.13] 0.020 [0.50] Z* MAXIMUM 0.199 [5.046] G* MINIMUM 0.083 [2.108] X* MAXIMUM 0.071 [1.806] *Land Pattern Dimensions are per IFC-782 TABLE 4 - ORDERING INFORMATION MODEL VSMC CHIP SIZE 1506 RESISTANCE RANGE 5W to < 1kW RESISTANCE VALUE LETTER DESIGNATOR MULTIPLIER FACTOR x 1.0 TOLERANCE T 0.01% Q 0.02% A 0.05% B 0.1% C 0.25% D 0.5% F 1.0% TERMINATION B - Solderable PACKAGING T = Tape and Reel W = Waffle Pack R Example: 249R00 = 249W 1k to 40k K x 103 Example: 40K000 = 40.0kW VISHAY FOIL * FRANCE +33.4.93.37.28.24 FAX: +33.4.93.37.27.31 * GERMANY +49.9287.710 FAX: +49 9287.70435 * ISRAEL +972.3.557.0945 FAX: +972.3.558.9121 * ITALY + 39.2.300.11919 FAX: +39.2.300.11999 * JAPAN +81.42.729.0661 FAX: +81.42.729.3400 * SINGAPORE +65.788.6668 FAX: +65.788.0988 * SWEDEN +46.8.594.70590 FAX: +46.8.594.70581 * UK +44 191 514 8237 FAX: +44 1953 457 722 * USA +1 610 407-4800 FAX: +1 610 640-9081 Document Number: 63077 Revision 02-May-02 www.vishay.com 63 |
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