SF
EU
features
•
•
•
•
•
•
•
Quickly breaks extraordinary current
Small size SMD type
The least rise in resistance after reflow soldering
Latched if when extraordinary current continues
The least rise in resistance by repeating trips
UL143A File No. E250106
c-UL CAN/CAS-C222, No.0 and Technical Information
Letter No. CA-3A File No. E250106 approved
•
Marking: Green body color
•
Products with lead-free terminations meet EU RoHS
and China RoHS requirements
chip type resettable fuses
dimensions and construction
a
W
L
a
Type
SF45
(1812)
L
.177±.008
(4.5±0.2)
Dimensions
inches
(mm)
W
h
.126±.008
(3.2±0.2)
.016±.008
(0.4±0.2)
a
.020±.008
(0.5±0.2)
h
Inner
Electrode
Outer
Electrode
Element
Protective
Coating
ordering information
New Part #
SF
Type
45
Style
45: 4.5 x 3.2mm
N
Characteristic
N: Normal
110
Hold
Current
050: 0.50A
075: 0.75A
110: 1.1A
T
Termination
Material
T: Sn
TE
Packaging
TE: Embossed plastic tape
For further information on packaging,
please refer to Appendix A.
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
1/06/09
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
181
PMS 300 neg.
Black neg.
SF
applications and ratings
Part
Designation
circuit
protection
chip type resettable fuses
Hold
Rating
0.50A
0.75A
1.10A
Max. Rated
Voltage
(DCV)
15.0
13.2
6.0
Max. Rated
Current
(A)
40
Trip
Current
(A)
1.00
1.50
2.20
Initial
Resistance
Resistance R after Tripping
Type (Ω)
R1 Max. (Ω)
0.49
0.24
0.15
0.85
0.41
0.21
Power
Dissipation
PD (W)
0.6
Operating
Temperature
Range
-40°C
to
+85°C
SF45N050
SF45N075
SF45N110
environmental applications
Derating Curve
Percentage of Rated Current
160
1000
100
10
Time to Trip (Sec.)
1
140
120
100
80
60
40
20
0
-55
-35
-15
5
25
45
65
85
105
125
Time to Trip Characteristics
050
075
1
Current
(A)
110
.1
.01
Ambient Temperature
(°C)
R-T Characteristics
100k
10k
Resistance (Ω)
1k
.001
.0001
0.1
10
100
100
10
1
0.1
0
50
Temperature
(°C)
100
150
Performance Characteristics
Parameter
Trip Endurance
Requirement
Limit
Without damage under 24 hours
of current sending
Test Method
Use the device which has been left for 15 minutes or more in 25°C
set voltage to be applied to the element at maximum rated voltage.
And set current to be applied within the range between trip current
and maximum rated current
Use the device which has been left for 15 minutes or more in 25°C
set voltage and current to be applied to maximum rated voltage
and maximum rated current respectively. Apply rated voltage for
5 seconds and 55 seconds off
85°C ± 3°C, 1000 hours
-40°C ± 3°C, 1000 hours
85°C ± 3°C, 85% RH, 1000 hours
-40°C ± 3°C (30 minutes), +85°C ± 3°C (30 minutes), 20 cycles
Trip Cycle Life (ON-OFF Test)
Without damage after 1000 cycles
Heat Resistance
Cold Resistance
Humidity Resistance
Heat-Cold Cycling
Without Damage
Without Damage
Without Damage
Without Damage
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
2/22/08
182
—
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
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