Type UMTS 250V UMF
Square Ceramic Surface Mount Time Lag Fuse
UMTS Series – 4818 Size
RoHS 2 Compliant
Features
- Time lag
- 250VAC, Voltage Rating
- Wide range of current rating from 250mA to 6.3A
- Wide operating temperature range
- Tape & Reel for auto-insert SMD process
- RoHS 2 compliant
- Halogen Free
- Leadfree
Applications
- Lighting system
- LCD monitor
- Office electronic equipment
- Industrial equipment
- Medical equipment
- Power supply
LEAD FREE =
HALOGEN FREE =
Electrical Characteristics
(Per IEC60127-4)
Testing
Current
125%
200%
1000%
Blow Time
Minimum
1 Hr.
N/A
0.01 Sec
Maximum
N/A
2 Min.
0.1 Sec
Safety Agency Approvals
Safety
Agency
Safety Agency
Certificate
E315341
Voltage Rating
(V)
250mA–6.3A/250V AC
Ampere Range / Volt
@ I.R. ability*
250mA-6.3A/250V@150A AC
/350V@100A DC
R 50399509
Tested according to
1.6A/250V AC
IEC60127-
/350V AC
1:2006+A1+A2
IEC 60127-7:2016
*I.R.= Interrupting Rating = Short Circuit Rating(Amps)
1.6A/250V@150A AC
/350V@100A AC
Physical Specifications
Materials
Body : Ceramic
Terminations : Brass Caps, gold plated with nickel undercoating
On Fuse :
"bel", "T", "Current Rating", "L","250V",in black color.
Marking
On Label :
"bel", "UMTS", "Current Rating", "Voltage Rating", "Interrupting Rating",
"Appropriate Safety Logos" and "
", "
"(China RoHS compliant).
Specifications subject to change without notice
belfuse.com/circuit-protection
Type UMTS 250V UMF
Environmental Specifications
Shock Resistance
Vibration Resistance
Salt Spray Resistance
Insulation Resistance
Solderability
Resistance to solder Heat
Thermal Shock
Operating Temperature
Moisture Sensitivity Level
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, 0.06 inch, total excursion).
MIL-STD-202G, Method 101E, Test Condition B (48 hrs).
MIL-STD-202G, Method 302, Test Condition B
(After Opening) 0.1Mohms minimum.
MIL-STD-202G, Method 208H
MIL-STD-202G, Method 210F, Test Condition J. (235℃,30 sec)
MIL-STD-202G, Method 107G, Test Condition B
(-65℃ to +125℃).
-55℃ to +125℃
1
( Peak Temperature at 240℃ for 30 seconds max )
2
/
4
Electrical Specifications
Catalog
Number
Ampere
Rating
Typical
Cold
Resistance
(ohms)
0.78
0.56
0.35
0.245
0.180
0.132
0.085
0.065
0.061
Volt-drop
@100% In
(Volt) max.
0.314
0.279
0.248
0.221
0.197
0.175
0.156
0.155
0.150
Voltage and
Interrupting
Ratings
Melting I²T
@10 In
(A² Sec)
0.26
0.42
0.67
1.1
1.7
2.8
Maximum
Power
Dissipation
(W)
0.12
0.14
0.16
0.19
0.21
0.25
0.28
0.33
0.37
0.43
0.50
0.57
0.66
0.75
0.87
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Y
Agency
Approvals
UMTS 250
UMTS 315
UMTS 400
UMTS 500
UMTS 630
UMTS 800
UMTS 1
UMTS 1.25
UMTS 1.6
250mA
315mA
400mA
500mA
630mA
800mA
1A
1.25A
1.6A
See Table of Safety
Approvals on Page 1
for Voltage and
associated
Interrupting Ratings
4.4
7.0
5.6
9.2
15
25
42
69
113
Y
UMTS 2
UMTS 2.5
UMTS 3.15
UMTS 4
UMTS 5
UMTS 6.3
2A
2.5A
3.15A
4A
5A
6.3A
0.043
0.035
0.025
0.020
0.014
0.011
0.145
0.140
0.135
0.130
0.120
0.115
Consult manufacturer for other ratings
Specifications subject to change without notice
Bel Fuse Inc.
206 Van Vorst Street
Jersey City, NJ 07302 USA
© 2018 Bel Fuse, Inc.
+1 201.432.0463
Bel.US.CS@belf.com
belfuse.com/circuit-protection
Rev. UMTS Nov2018
Type UMTS 250V UMF
Temperature Derating Curve
Average Time Current Curve
3
/
4
Soldering Parameters
IR Reflow Profile
T
emperature min (Tsmin)
Preheat & Soak
Temperature max (Tsmax)
Time (Tsmin to Tsmax) (ts)
Average ramp-up rate (Tsmax to Tp)
Liquidous temperature (TL)
Time at liquidous (tL)
Peak temperature (Tp)
Time (tp) within 5℃ of the
specified classification temperture (Tc)
Average ramp-down rate (Tp to Tsmax)
Time 25℃ to peak temperature
150℃
200℃
60-120 seconds
3℃/second max.
217℃
60-150 seconds
240℃ max
30 seconds
6℃/second max.
8 minutes max.
Soldering Guidelines
Reflow Conditions Recommended
240℃,
30 sec. max.
NOT Recommended for Wave solder / Direct immersion / Hand Solder
Specifications subject to change without notice
Bel Fuse Inc.
206 Van Vorst Street
Jersey City, NJ 07302 USA
© 2018 Bel Fuse, Inc.
+1 201.432.0463
Bel.US.CS@belf.com
belfuse.com/circuit-protection
Rev. UMTS Nov2018
Type UMTS 250V UMF
Fuse FGNO Explanation
0683 - [XXXX] - XX
0683-=UMTS; [XXXX]=Ampere Rating; XX=See Ordering Information as below
Fraction
1/4
Decimal
0.250
.315
4/10
1/2
.400
.500
.630
8/10
.800
Milliamps
250
315
400
500
630
800
Bel FGNO[XXXX]
0250
0315
0400
0500
0630
0800
2-1/2
1-1/4
Fraction
Decimal
1.0
1.25
1.60
2.0
2.5
3.15
4.0
5.0
6.3
Amps
1
1.25
1.6
2
2.5
3.15
4
5
6.3
4
/
4
Bel FGNO[XXXX]
1000
1250
1600
2000
2500
3150
4000
5000
6300
Mechanical Dimensions
Ordering Information
Packaging
Packaging Tape & Reel
24 mm wide tape with 13 inches Diameter reel
Packaging Specification
EIA Standard 481-E
Quantity
1500
Quantity & Packaging Code
01
Specifications subject to change without notice
Bel Fuse Inc.
206 Van Vorst Street
Jersey City, NJ 07302 USA
© 2018 Bel Fuse, Inc.
+1 201.432.0463
Bel.US.CS@belf.com
belfuse.com/circuit-protection
Rev. UMTS Nov2018
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Bel
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UMTS 4 UMTS 1.25 UMTS 1 UMTS 500 UMTS 3.15 UMTS 800 UMTS 2 UMTS 1.6 UMTS 5 UMTS 630
UMTS 2.5 UMTS 6300
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