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| Semi-Precision Power Wirewound Resistor AS Series * 1/4 watt to 10 watts * 0.1 ohm to 175K ohms * 5%, 3%, 1%, .5% tolerance * Resistance wire TCR 20 ppm/C * RoHS-compliant version available Alloy resistance wirewound to specific parameters including TCR's from All welded cap and lead AlphaDigital Marking Silicone conformal coating Heat conducting ceramic Electrical Data IRC Type Similar MIL-R-26 Style Power Rating 275C Max. Hot Spot 125C 0.5 0.5 RW70U 1 1 RW79U 2 3 2 3 RW74U/ 5 7 RW78U 10 25C 1 1 2 2 3 4 3 5 7 9 14 Commercial Range (ohms) Min. 0.1 0.1 0.1 .05 0.1 0.1 0.1 0.1 0.1 0.1 0.1 Max. 1.0K 6.0K 7.5K 2K 20K 24K 18K 30K 60K 90K 175K Non-Inductive Range (ohms) Min. * * 0.1 * 0.5 0.5 0.2 0.5 0.8 1.0 3.0 Max. * * 3.8K * 10K 12K 7.5K 15K 30K 45K 50K Available Resistance (ohms) 0.5%, 1% 1-1K 1-6K 1-7.5K 1-2K 1-20K 1-24K 1-18K 1-30K 1-60K 1-90K 1-175K 3%, 5% 0.1-1K 0.1-6K 0.1-7.5K .05-2K 0.1-20K 0.1-24K 0.1-18K 0.1-30K 0.1-60K 0.1-90K 0.1-175K AS-1/4 AS-1/2 AS-1 AS-1C AS-2 AS-2B AS-2C AS-3 AS-5 AS-7 AS-10 RW81 Inductance of AS-1/2 is less than 1H at 1MHz. To order non-inductive types, add the prefix "N". Example: NAS-1, NAS-2C, etc. *Typical inductance of AS-1C <5 ohms is <1H. Lower values available upon request. 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 AS Series Issue August 2008 Sheet 1 of 3 Semi-Precision Power Wirewound Resistor Physical Data NOTE: * Coating and marking is resistant to normal degreasing. Consult factory for special requirements. 1.50 MIN. (38.1) B A Please note lead length dimension change on the following two items only: AS-2B 1.3 min. AS-2C 1.3 min. D C IRC Type AS-1/4 AS-1/2 AS-1 AS-1C AS-2 AS-2B AS-2C AS-3 AS-5 AS-7 AS-10 A0.032 0.250 (6.4) 0.312 (7.9) 0.367 (9.3) 0.256 (6.5) 0.480 (12.2) 0.540 (13.7) 0.489 (11.0) 0.687 (17.5) 0.875 (22.2) 1.250 (31.8) 1.812 (46.0) B (max) 0.094 (2.4) 0.094 (2.4) 0.125 (3.2) 0.115 (2.9) 0.250 (6.3) 0.219 (5.6) 0.157 (4.0) 0.282 (7.2) 0.344 (8.8) 0.344 (8.8) 0.385 (9.8) C (max) 0.312 (7.9) 0.375 (9.5) 0.429 (10.9) 0.303 (7.7) 0.600 (15.2) 0.663 (16.6) 0.594 (15.1) 0.812 (20.6) 0.980 (24.9) 1.375 (35.0) 1.937 (49.2) D (Lead Diameter) 0.020 (0.5) 0.020 (0.5) 0.020 (0.5) 0.025 (0.64) 0.025 (0.64) 0.032 (0.8) 0.032 (0.8) 0.032 (0.8) 0.032 (0.8) 0.040 (1.0) 0.040 (1.0) 0.040 (1.0) 0.040 (1.0) 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 AS Series Issue August 2008 Sheet 2 of 3 Semi-Precision Power Wirewound Resistor Environmental Testing at 25C Test Condition Load Life 1000 hours Moisture Resistance Temperature Cycle Short Time Overload Low Temperature Operation Solder Heat Shock Vibration Max R 1.0% 1.0% 0.5% 0.5% 0.5% 0.25% 0.5% 0.5% Power Derating Curve Percent of 125C Power Rating 200 175 150 125 AS- 2B AS- 1/4, 1/2, 1, 1C AS- 3, 2 AS- 2C AS- 5, 10 100 75 0 25 75 AS- 7 125 175 225 275 Ambient Temperature (C) Selected Pulse-Handling Capability @ 125C 14 Energy (watts-second) 12 10 8 AS- 2B Ordering Data Sample Part No. IRC Type AS AS - 3 27R0 F LF AS- 2A AS- 2 Power AS- 3 3 = 3 watts (See specification chart for other power ratings) Resistance Value 6 AS- 2C (100 ohms and greater - First 3 significant digits plus 4th digit multiplier) Example: 100 ohms = 1000, 1000 ohms = 1001, 150,000 ohms = 1503 (Less than 100 ohms - "R" is used to designate decimal) Example: 51 ohms = 51R0, 1 ohm = 1R00, 0.25 ohms = R250 4 AS- 1 Tolerance J = 5%; H = 3%; F = 1%; D = 0.5% 2 0 0.1 AS- 1/2 AS- 1/4 Lead Free Construction 0.2 0.5 1 2 5 10 Resistance (ohms) 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 AS Series Issue August 2008 Sheet 3 of 3 |
Price & Availability of AS-2R250DLF
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