Description
• Time-delay
• Optional axial leads available
• 1⁄4x 1 1⁄4(6.4 x 31.7mm) physical size
• Glass tube, nickel-plated brass endcap construction
• UL Listed product meets standard 248-14
Agency Information
•
UL Listed Card: MDL 1/16 - 8A (Guide JDYX, File E19180)
• UL Recognized Card: MDL 9 - 30A (Guide JDYX2,
File E19180)
• CSA Certification Card: MDL 1/16 - 8A (Class No. 1422-01)
• CSA Component Acceptance: MDL 9-30A
(Class No. 1422-30)
• CE
Environmental Data
• Shock: 1A thru 30A – MIL-STD-202, Method 207, (HI Shock)
• Vibration: 1/4A thru 30A – MIL-STD-202, Method 204, Test
Condition C (Except 5g, 500HZ)
Ordering
Specify packaging code
• Insert packaging code prefix before part number. E.g., BK
(or BK1)-MDL-5-R
Specify option codes if desired
• For axial leads, insert “V” between catalog series and amp
rating. E.g., BK-MDL-V-5-R
• For board washable, insert “B” between catalog series and
amp rating. E.g., BK-MDL-B-5-R
• For axial leads and board washable, insert “B” then “V”
between catalog series and amp rating. E.g., BK-MDL-BV-5-R
38.10
(1.500)
32.82
(1.292)
38.10
(1.500)
6.76
(0.266)
31.75
(1.250)
6.35
(0.250)
DIA. OF LEADS
0–15 AMP:
20–30 AMP:
0.81
(0.032)
1.02
(0.040)
Dimensions - mm (in)
Drawing Not to Scale
Specifications
Voltage AC Interrupting Rating* (amps)@ Typical DC Cold Typical Typical
Part Rating Resistance** Melting I2t† Voltage
Number Vac 250Vac 125Vac 32Vac (ΩΩ) 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)
† Typical Melting I2t (A2Sec) (I2t was measured at listed interrupting rating and rated voltage.)
‡ Typical Voltage Drop (Voltage drop was measured at 25°C±3°C ambient temperature at rated current)
†† MDL-25 & MDL-30 not available in RoHS compliant construction.
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
3-2⁄10 - 8A 200% 12 seconds minimum
1/4˝ x 1 1/4˝ Time-Delay, Glass Tube Fuses
MDL Series
0209 SB-BU08675 Page 1 of 2 Data Sheet 2004
Current in Amps
Current in Amps
Time in Seconds
Time in Seconds
Time-Current Curve
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
BSealed to withstand aqueous cleaning (Board Washable)
VAxial leads - copper tinned wire with nickel plated brass overcaps
© 2009 Cooper Bussmann
St. Louis, MO 63178
www.cooperbussmann.com
0209 SB-BU08675 Page 2 of 2 Data Sheet 2004
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.
