Type MRF
Fast Acting Radial Lead Micro Fuse Series
MRF Series
RoHS Compliant
Description
Sub-miniature, fast-acting type, 250V rated fuses designed, approved and complied
with IEC 60127-3, standard sheet 3.
Features
- Fast Acting (250V AC@50A)
- Meet IEC standard 60127-3, sheet 3
- Wide operating temperature range
- Bulk and Tape & Reel packing available
- AEC-Q Compliant
- Full compliance with EU Directive 2011/65/EU and amending directive 2015/863
- Halogen Free
- Lead Free
- Meets Bel automotive qualification*
* - Largely based on internal AEC-Q test plan
Applications
Provide individual protection for components or internal circuits.
- Power supplies
- Battery chargers
- Consumer electronics
- Adapter
LEAD FREE =
- Industrial controllers
HALOGEN FREE =
Physical Specifications
Base and Cover : Black thermoplastic, UL 94-V0
Materials
Pins : 100% Matte Tin Plated Copper
On Fuse :
"bel", "F" ,"Current Rating", "250V" & "Appropriate Safety Logos"
Marking
AEC-Q Compliant
On Label :
"bel", "MRF", "Current Rating", "Voltage Rating", "Interrupting Rating",
"Appropriate Safety Logos" and "
", "
"(China RoHS compliant).
Electrical Characteristics (IEC-127-3 STANDARD SHEET 3) Safety Agency Approvals
Rated
Current
1.5In 2.1In
Min
2.75In
4In
Max Min Max Min Max
10In
Safety
Agency
Ampere Rating/
Voltage Rating
Safety Agency
Certificate
Ampere Range / Volt
@ I.R. ability*
Max
50mA to
1
30
10
3
3
300
20
6.3A
hour min. ms sec ms ms
ms
inclusive
In clause 9.2, the test voltage for MRF ratings from 80mA to
6.3A is 64VDC.
SE-S-2100235
50mA - 5A / 250V AC @ 35A
or 10 In whichever is greater
40017420
40028500
50mA-6.3A/
250V ac
LR39772
E20624
6.3A/250V ac @ 63A
50mA-6.3 /250V AC @ 50A
50mA-6.3A/350V AC @ 100A
JET 1037-31007-1001
1A-5A/250V AC @ 100A
*I.R.= Interrupting Rating = Short Circuit Rating(Amps)
Specifications subject to change without notice
belfuse.com/circuit-protection
Type MRF
2/4
Environmental Specifications
Vibration
Resistance
Salt Spray
Resistance
MIL-STD-202G, Method 213B, Test
Condition 1
(100 G's peak for 6 milliseconds;
Sawtooth waveform)
MIL-STD-202G, Method 201A
(10-55 Hz X 3 axis / no load).
MIL-STD-202G, Method 101E, Test
Condition B (48 hrs.).
Solderability
MIL-STD-202G, Method 208H
Resistance to
solder Heat
Moisture
Resistance
Operating
Temperature
MIL-STD-202G, Method 210F, Test
Condition C. Top Side. (260℃,20 sec)
MIL-STD-202G, Method 202G, Method
106G
Shock Resistance
High temperature storage
MIL-STD-202 Method 108
Temperature cycling
Operational life
JESD22 Method JA-104,Test Condition B
MIL-STD-202 Method 103, 85C/85% RH with
10% operating power for 1000 hrs.
MIL-STD-202 Method 108, Test Condition D
Resistance to solvents
MIL-STD-202 Method 215
Mechanical shock
MIL-STD-202 Method 213,Test Condition C
Vibration
Resistance to soldering
heat
Thermal shock
MIL-STD-202 Method 204
Solderability
J-STD-002
Board flex(SMD)
AEC-Q200-005
Terminal strength
AEC-Q200-006
Electrical characterization
3 temperature electrical
Biased humidity
-55℃ to +125℃
MIL-STD-202 Method 210,Test condition B
MIL-STD-202 Method 107
Electrical Specifications
Catalog
Number
Ampere
Rating
Typical
Volt-drop
Cold
@100% In
Resistance
(Volt) max.
(ohms)
Voltage and
Interrupting
Ratings
Melting I²T
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