MRT BEL | Alldatasheet

Document overview

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Technical content

Features

  • Time lag (250V AC) - Meet IEC standard 60127-3, sheet 4 - Wide operating temperature range - Bulk and Tape & Reel packing available - Full compliance with EU Directive 2011/65/EU and amending directive 2015/863 - Halogen Free - Lead Free - AEC-Q Compliant - 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 - Industrial controllers Physical Specifications Materials Base and Cover : Black thermoplastic, UL 94-V0 Pins : 100% Matte Tin Plated Copper Marking On Fuse : "bel", "T" ,"Current Rating", "250V" & "Appropriate Safety Logos" On Label : "bel", "MRT", "T" , "Current Rating", "Voltage Rating", "Interrupting Rating", "Appropriate Safety Logos" and " ", " "(China RoHS compliant). Electrical Characteristics (IEC-127-3 STANDARD SHEET 4 ) Safety Agency Approvals Rated Current 1.5In 2.1In 2.75In 4In 10In Min Max Min Max Min Max Min Max 80mA to 6.3A inclusive 1 2 400 10 150 3 20 150 Above 6.3A 1 5 1000 20 150 3 20 150 hour min. ms sec ms sec ms ms In clause 9.2, the test voltage for MRT ratings from 80mA to 6.3A is 64VDC. Safety Agency Safety Agency Certificate Ampere Rating/ Voltage Rating Ampere Range / Volt @ I.R. ability* 139937 80mA-10A/ 250V ac 80mA-800mA/250V ac@35A 1A-4A/250V ac@100A 40001000 5A-10A/250V ac@100A LR39772 80mA-6.3A/250V ac@50A E506667 80mA-10A/277V ac@100A Self-declaration No: 2020970207000131 80mA-10A/250V ac@35A or 10 In whichever is greater *I.R.= Interrupting Rating = Short Circuit Rating(Amps) LEAD FREE = HALOGEN FREE = Specifications subject to change without notice AEC-Q Compliant

Bel Fuse Inc.

300 Executive Drive, Suite 300,

West Orange, NJ 07052 USA +1 201.432.0463 Bel.US.CS@belf.com belfuse.com/circuit-protection © 2025 Bel Fuse, Inc. Rev. MRT Feb2025 Environmental Specifications High temperature storage MIL-STD-202 Method 108 Temperature cycling JESD22 Method JA-104,Test Condition B Biased humidity MIL-STD-202 Method 103, 85C/85% RH with 10% operating power for 1000 hrs. Operational life 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 MIL-STD-202 Method 204 Resistance to soldering heat MIL-STD-202 Method 210,Test condition B Thermal shock MIL-STD-202 Method 107 Solderability J-STD-002 Board flex(SMD) AEC-Q200-005 Terminal strength AEC-Q200-006 Electrical characterization 3 temperature electrical Electrical Specifications Catalog Number Ampere Rating Typical Cold Resistance (ohms) Volt-drop @100% In (Volt) max. Voltage and Interrupting Ratings Melting I² T <10 mSec (A² Sec) Melting I² T @10 In (A² Sec) Maximum Power Dissipation (W) Agency Approvals MRT 80 80mA 3.5 0.398 See Table of Safety Approvals on Page 1 for Voltage and associated Interrupting Ratings 0.01 0.01 0.10 Y Y Y Y MRT 1 1A 0.070 0.090 6 7 0.44 Y Y Y Y MRT 2 2A 0.029 0.084 23 27 0.67 Y Y Y Y MRT 4 4A 0.013 0.073 92 110 1.02 Y Y Y Y MRT 5 5A 0.010 0.073 145 175 1.17 Y Y Y Y MRT 8 8A 0.006 0.073 280 350 2.40 Y Y Y MRT 10 10A 0.0042 0.070 300 400 1.60 Y Y Y Consult manufacturer for other ratings Shock Resistance MIL-STD-202G, Method 213B, Test Condition 1 (100 G's peak for 6 milliseconds; Sawtooth waveform) Vibration Resistance MIL-STD-202G, Method 201A (10-55 Hz X 3 axis / no load). Salt Spray Resistance MIL-STD-202G, Method 101E, Test Condition B (48 hrs.). Solderability MIL-STD-202G, Method 208H Resistance to solder Heat MIL-STD-202G, Method 210F, Test Condition C. Top Side. (260℃,20 sec) Moisture Resistance MIL-STD-202G, Method 202G, Method 106G Operating Temperature -55℃ to +125℃ Specifications subject to change without notice

Bel Fuse Inc. West Orange, NJ 07052 USA +1 201.432.0463 Bel.US.CS@belf.com belfuse.com/circuit-protection © 2025 Bel Fuse, Inc. Rev. MRT Feb2025 Temperature Derating Curve Average Time Current Curve Soldering Parameters Lead-free Wave Soldering Profile Wave Soldering Parameter Average ramp-up rate 200℃ / second Heating rate during preheat typical 1 - 2℃ / second Max 4℃ / second Final preheat temperature within 125℃ of soldering temperature Peak temperature Tp 260℃ Time within +0℃ / -5℃ of actual peak temperature 10 seconds Ramp-down rate 5℃ / second max. Specifications subject to change without notice

Bel Fuse Inc. West Orange, NJ 07052 USA +1 201.432.0463 Bel.US.CS@belf.com belfuse.com/circuit-protection © 2025 Bel Fuse, Inc. Rev. MRT Feb2025 Fuse FGNO Explanation 0692 - [XXXX] X XX 0692=MRT; [XXXX]=Ampere Rating; XX=See Ordering Information as below Mechanical Dimensions Ordering Information Packaging Packaging Option Packaging Specification Quantity Packaging Code Bulk / bag, 1000 / box N/A 1000 01 , 05 12.7 mm pitch, On Tape / box IEC-286-2 1000 02 Fraction Decimal Milliamps Bel FGNO[XXXX] Fraction Decimal Amps Bel FGNO[XXXX] 8/100 0.080 80 0080 1.0 1 1000 1/10 .100 100 0100 1-1/4 1.25 1.25 1250 1/8 .125 125 0125 1.60 1.6 1600 .160 160 0160 2.0 2 2000 2/10 .200 200 0200 2-1/2 2.5 2.5 2500 1/4 .250 250 0250 3.15 3.15 3150 .315 315 0315 4.0 4 4000 4/10 .400 400 0400 5.0 5 5000 1/2 .500 500 0500 6.3 6.3 6300 .630 630 0630 8.0 8.0 8000 8/10 .800 800 0800 10.0 10.0 9100 Specifications subject to change without notice