1 1 /4 x 1 /4 Time-Delay, Glass Tube Fuses MDL Series Description Time-delay Optional axial leads available 1 1 4 x 1 4 (6.4 x 31.7mm) physical size Glass tube, nickel-plated brass endcap construction UL Listed product meets standard 248-14 Electrical Characteristics Rated Current % of Amp Rating Opening Time 100% None 1 16 - 30A 135% 60 minutes maximum 200% 120 seconds maximum 1 16 - 3A 200% 5 seconds minimum For board washable, insert B between catalog series and 2 3- 10 - 8A 200% 12 seconds minimum amp rating. E.g., BK-MDL-B-5-R Agency Information For axial leads and board washable, insert B then V UL Listed Card: MDL 1/16 - 8A (Guide JDYX, File E19180) between catalog series and amp rating. E.g., BK-MDL-BV-5-R UL Recognized Card: MDL 9 - 30A (Guide JDYX2, Dimensions - mm (in) File E19180) Drawing Not to Scale CSA Certification Card: MDL 1/16 - 8A (Class No. 1422-01) CSA Component Acceptance: MDL 9-30A 38.10 32.82 38.10 (Class No. 1422-30) (1.500) (1.292) (1.500) CE Environmental Data Shock: 1A thru 30A MIL-STD-202, Method 207, (HI Shock) 6.76 DIA. OF LEADS Vibration: 1/4A thru 30A MIL-STD-202, Method 204, Test (0.266) 0.81 Condition C (Except 5g, 500HZ) 015 AMP: (0.032) Ordering 1.02 Specify packaging code 2030 AMP: (0.040) Insert packaging code prefix before part number. E.g., BK 31.75 6.35 (or BK1)-MDL-5-R (1.250) (0.250) Specify option codes if desired For axial leads, insert V between catalog series and amp rating. E.g., BK-MDL-V-5-R Specifications Voltage Typical DC Cold Typical Typical 2 AC Interrupting Rating* (amps) Part Rating Resistance** Melting I t Voltage Number Vac 250Vac 125Vac 32Vac () AC Drop MDL-1/16-R 250 35 10000 - 45.6 0.0046 2.79 MDL-1/10-R 250 35 10000 - 15.68 0.0420 1.95 MDL-1/8-R 250 35 10000 - 12.238 0.0422 1.52 MDL-3/16-R 250 35 10000 - 4.81 0.116 1.05 MDL-2/10-R 250 35 10000 - 5.234 0.314 0.972 MDL-1/4-R 250 35 10000 - 3.208 0.447 0.965 MDL-3/10-R 250 35 10000 - 2.046 0.412 0.808 MDL-3/8-R 250 35 10000 - 1.567 0.982 1.46 MDL-1/2-R 250 35 10000 - 0.943 1.656 1.27 MDL-3/4-R 250 35 10000 - 0.397 4.343 1.01 MDL-1-R 250 35 10000 - 0.273 11.498 0.995 MDL-1-1/4-R 250 100 10000 - 0.205 86.2 0.722 MDL-1-1/2-R 250 100 10000 - 0.156 22.7 0.721 MDL-2-R 250 100 10000 - 0.116 62.3 0.644 MDL-2-1/4-R 250 100 10000 - 0.096 49.6 0.535 MDL-2-1/2-R 250 100 10000 - 0.081 63.1 0.410 MDL-3-R 250 100 10000 - 0.057 67.5 0.345 MDL-4-R 250 200 10000 - 0.038 19.3 0.187 MDL-5-R 250 200 10000 - 0.025 32.0 0.160 MDL-6-R 250 200 10000 - 0.022 37.4 0.155 MDL-6-1/4-R 250 200 10000 - 0.02 38.7 0.152 MDL-7-R 250 200 10000 - 0.018 42.7 0.140 MDL-8-R 250 200 10000 - 0.015 47.8 0.119 MDL-9-R 32 - - 1000 0.012 51.5 0.124 MDL-10-R 32 - - 1000 0.01 64.4 0.114 MDL-15-R 32 - - 1000 0.005 354.0 0.130 MDL-20-R 32 - - 1000 0.004 2914.0 0.530 MDL-25 32 - - 1000 0.01225 15221.0 0.30 MDL-30 32 - - 1000 0.0011 15581.0 0.40 * Interrupting Ratings (Interrupting ratings were measured at 70% - 80% 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 25C3C ambient temperature at rated current) MDL-25 & MDL-30 not available in RoHS compliant construction. 0209 SB-BU08675 Page 1 of 2 Data Sheet 2004Time in Seconds Time-Current Curve Current in Amps Current in Amps Packaging Code Packaging Code 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 contained 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 support 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. 2009 Cooper Bussmann St. Louis, MO 63178 www.cooperbussmann.com 0209 SB-BU08675 Page 2 of 2 Data Sheet 2004 Time in Seconds