1/4 x 1 1/4 Time-Delay Ceramic Tube Fuses MDA Series Environmental Data Shock: 1/100A and 8/10A MIL-STD-202, Method 213, Test Condition I 1A thru 30A MIL-STD-202, Method 213, Test Condition J Vibration: 1/100A and 8/10A MIL-STD-202, Method 201 1/4A thru 30A MIL-STD-202, Method 204, Test Condition C (Except 5g, 500Hz) Dimensions - mm (in) Drawing Not to Scale Description 38.10 32.82 38.10 Time-delay (1.500) (1.292) (1.500) Optional axial leads available 1/4 x 1-1/4 (6.35 x 31.75mm) physical size Ceramic tube, nickel-plated brass endcap construction 6.76 UL Listed product meets standard 248-14 DIA. OF LEADS (0.266) 0.81 Electrical Characteristics 015 AMP: (0.032) Rated Current Amp Rating Opening Time 1.02 2030 AMP: 100% None (0.040) 1/4 - 30A 135% 60 Minutes Max. 31.75 6.35 200% 120 Seconds Max. (1.250) (0.250) Agency Information 2 UL Listed Card: MDA /10 - 20A (Guide JDYX, File E19180) UL Recognized Card: MDA 25 - 30A (Guide JDYX2, File E19180) 2 Ordering CSA Certification Card: MDA /10 - 20 (Class No. 1422-01) Specify packaging, product and option code. CSA Component Acceptance: MDA 25-30A (Class No. 1422-30) Specifications AC Interrupting Part Voltage Rating Rating* (amps) DC Interrupting Typical DC Cold Typical Typical Voltage 2 Number Vac Vdc 250V 125V Rating (amps) 125V Resistance** () Melting I t AC Drop MDA-1/4-R 250 - 35 10000 - 8.7 0.748 4.00 MDA-1/2-R 250 - 35 10000 - 1.78 2.53 1.42 MDA-3/4-R 250 - 35 10000 - 0.82 8.58 1.31 MDA-1-R 250 - 35 10000 - 0.56 12.21 1.03 MDA-1-1/2-R 250 - 100 10000 - 0.2565 27.5 0.691 MDA-2-R 250 - 100 10000 - 0.17 70.4 0.623 MDA-2-1/2-R 250 - 200 10000 - 0.068 31.79 0.213 MDA-3-R 250 - 200 10000 - 0.0525 44.99 0.182 MDA-4-R 250 - 200 10000 - 0.03575 147.4 0.162 MDA-5-R 250 - 200 10000 - 0.0256 380.49 0.145 MDA-6-R 250 - 200 10000 - 0.02035 587.73 0.141 MDA-7-R 250 - 200 10000 - 0.0165 638.33 0.137 MDA-8-R 250 - 200 10000 - 0.013 1038.4 0.134 MDA-10-R 250 - 200 10000 - 0.00925 1620.43 0.135 MDA-12-R 250 - 750 10000 - 0.00755 125.18 0.128 MDA-15-R 250 - 750 10000 - 0.00565 336.82 0.107 MDA-20-R 250 125 1500 10000 10000 0.004065 483.45 0.095 MDA-25A-R 250 125 1500 10000 10000 0.0031 734.69 0.105 MDA-30A-R 250 125 1500 10000 10000 0.002465 1096.7 0.110 * Interrupting Ratings (Measured at 70% - 80% power factor on AC. The interrupting ratings for 25A, 30A were measured at 90% - 100% power factor on AC) ** DC Cold Resistance (Measured at <10% of rated current) 2 2 2 Typical Melting I t (A Sec) (I t was measured at listed interrupting rating and rated voltage) Typical Voltage Drop (Voltage drop was measured at 25C ambient temperature at rated current) 0711 BU-SB11875 Page 1 of 2 Data Sheet 2002TIME IN SECONDS Time-Current Curves CURRENT IN AMPS CURRENT IN AMPS Packaging Code Packaging Code Prefix Description BK- 100 fuses packed into a cardboard carton BK1- 1,000 fuses packed into a cardboard carton BK8- 8,000 fuses packed into a cardboard carton Option Code Option Code Description B Sealed to withstand aqueous cleaning (Board Washable) V Axial leads - copper tinned wire with nickel plated brass overcaps The only controlled copy of this Data Sheet is the electronic read-only version located on the Cooper Bussmann Network Drive. All other copies of this document are by definition uncontrolled. This bulletin is intended to clearly present comprehensive product data and provide technical information that will help the end user with design applications. Cooper Bussmann reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Cooper Bussmann also reserves the right to change or update, without notice, any technical information con- tained in this bulletin. Once a product has been selected, it should be tested by the user in all possible applications. Life Support Policy: Cooper Bussmann does not authorize the use of any of its products for use in life support devices or systems without the express written approval of an officer of the Company. Life sup- port systems are devices which support or sustain life, and whose failure to perform, when properly used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user. 2011 Cooper Bussmann www.cooperbussmann.com 0711 BU-SB11875 Page 2 of 2 Data Sheet 2002 TIME IN SECONDS 1/4 1/2 1 2 3-2/10 4 5 6-1/4 10 12 15 20 25 30