POWR-GARD® Fuse Datasheet
SPF SERIES SOLAR FUSES
1000 V dc • 1–30 A
REACH
Specifications
Description
The SPF Solar Protection Fuse series has been specifically
designed for the protection of photovoltaic (PV) systems.
This family of midget-style fuses (10 x 38 mm) can safely
protect PV modules and conductors from reverseovercurrent conditions.
As PV systems have grown in size, so have the
corresponding voltage requirements. This increase in
system voltage has typically been intended to minimize
power loss associated with long conductor runs. Standard
circuit protection devices are not designed to completely
protect photovoltaic panels. However, the SPF series is
UL Listed to safely interrupt faulted circuits up to this
demanding voltage level.
Voltage Rating
1000 V dc
Amperage Rating
1, 2, 3, 3.5, 4, 5, 6, 8, 10, 12, 15, 20, 25, 30
Max. Interrupting Rating
20 kA - 1 A - 20 A
50 kA - 25 A - 30 A
Time Constant
≤ 2ms
Material
Body: Melamine
Caps: Copper Alloy
Approvals
UL Listed (File: E339112)
CSA Certified (File: 029862_0_000)
TUV (Cert: J 50494849)
Applicable Standards
UL 248-1, 248-19
IEC 60269-6
Environmental RoHS Compliant
Country of Origin Mexico
Part Numbering System
0SPF xxxx H XR
Series
Mounting Options
Blank = Ferrule
XR = PCB
Amp Code
Refer to Ordering
Information table
Package Quantity
Littelfuse offers multiple ampere ratings to match specific
requirements in a variety of applications.
Features/Benefits
T = 10 Fuses
H = 100 Fuses
Dimensions Inches (mm)
Ferrule Version
Full range, fast-acting fuse helps eliminate common lowoverload faults
Prevents power generation losses due to nuisance
tripping from changes in temperature
Both PCB mount and dead-front holder options available
PCB Version
0.06 REF
(1.524)
0.012 REF
(0.292)
0.040 ±0.001
(1.02 ±.025 )
.378
(9.60)
Applications
0.140 REF
(3.56)
1.570
(39.88) MAX
1.570 MAX
(39.88)
Inverters
Combiner boxes
Battery charge controllers
1.5 (38.1)
±.031
(±.79)
1.490 MIN
(37.84)
1.490
(37.84) MIN
Recommended Accessories
Fuse Holder: LPHV 1000 V dc POWR-Safe Series
Fuse Clips: 125003
0.50 REF
(12.70)
.406
(10.31)
Web Resources
0.12 ±0.005
(3.05 ±0.13 )
0.28 ±0.005
(7.11 ±0.13 )
0.406 ±0.004
(10.31 ±0.10 )
Download technical documents: Littelfuse.com/SPF
MOUNTING HOLE
DETAIL
0.12 ±0.005
(3.05 ±0.13 )
Look for this logo to indicate products that are used in solar applications. Visit our website
littelfuse.com/solar for the latest updates on approvals, certifications, and new products.
1 of 6
Littelfuse.com/SPF
© 2022 Littelfuse, Inc.
Rev: 110922
POWR-GARD® Fuse Datasheet
SPF SERIES SOLAR FUSES
Ordering Information
Ferrule Version
SERIES
AMPERAGE
AMPERE
CODE
CATALOG
NUMBER
PRODUCT
MARKING
PACKING
QUANTITY
ORDERING NUMBER
UPC CODE
SPF
1
001.
SPF001
SPF 1A
10
100
0SPF001.T
0SPF001.H
07945816907
07945816908
SPF
2
002.
SPF002
SPF 2A
10
0SPF002.T
07945816910
100
0SPF002.H
07945816911
SPF
3
003.
SPF003
SPF 3A
SPF
3.5
03.5
SPF03.5
SPF 3-1/2A
SPF
4
004.
SPF004
SPF 4A
SPF
5
005.
SPF005
SPF 5A
SPF
6
006.
SPF006
SPF 6A
SPF
8
008.
SPF008
SPF 8A
SPF
10
010.
SPF010
SPF 10A
SPF
12
012.
SPF012
SPF 12A
SPF
15
015.
SPF015
SPF 15A
SPF
20
020.
SPF020
SPF 20A
SPF
25
025.
SPF025
SPF 25A
SPF
30
030.
SPF030
SPF 30A
2 of 6
10
0SPF003.T
07945816913
100
0SPF003.H
07945816914
10
0SPF03.5T
07945880087
100
0SPF03.5H
07945880088
10
0SPF004.T
07945816916
100
0SPF004.H
07945816917
10
0SPF005.T
07945816919
100
0SPF005.H
07945816920
10
0SPF006.T
07945816922
100
0SPF006.H
07945816923
10
0SPF008.T
07945816925
100
0SPF008.H
07945816926
10
0SPF010.T
07945816928
100
0SPF010.H
07945816929
10
0SPF012.T
07945816931
100
0SPF012.H
07945816932
10
0SPF015.T
07945816934
100
0SPF015.H
07945816935
10
0SPF020.T
07945816937
100
0SPF020.H
07945816938
10
0SPF025.T
07945817595
100
0SPF025.H
07945817596
10
0SPF030.T
07945817598
100
0SPF030.H
07945817599
Littelfuse.com/SPF
© 2022 Littelfuse, Inc.
Rev: 110922
POWR-GARD® Fuse Datasheet
SPF SERIES SOLAR FUSES
Ordering Information
PCB Version
SERIES
AMPERAGE
AMPERE
CODE
CATALOG
NUMBER
PRODUCT
MARKING
PACKING
QUANTITY
ORDERING NUMBER
UPC CODE
SPF
1
001.
SPF001R
SPF 1A-R
100
0SPF001.HXR
07945816909
SPF
2
002.
SPF002R
SPF 2A-R
100
0SPF002.HXR
07945816912
SPF
3
003.
SPF003R
SPF 3A-R
100
0SPF003.HXR
07945816915
SPF
3.5
03.5
SPF03.5R
SPF 3-1/2A-R
100
0SPF03.5.HXR
07945880089
SPF
4
004.
SPF004R
SPF 4A-R
100
0SPF004.HXR
07945816918
SPF
5
005.
SPF005R
SPF 5A-R
100
0SPF005.HXR
07945816921
SPF
6
006.
SPF006R
SPF 6A-R
100
0SPF006.HXR
07945816924
SPF
8
008.
SPF008R
SPF 8A-R
100
0SPF008.HXR
07945816927
SPF
10
010.
SPF010R
SPF 10A-R
100
0SPF010.HXR
07945816930
SPF
12
012.
SPF012R
SPF 12A-R
100
0SPF012.HXR
07945816933
SPF
15
015.
SPF015R
SPF 15A-R
100
0SPF015.HXR
07945816936
SPF
20
020.
SPF020R
SPF 20A-R
100
0SPF020.HXR
07945817594
SPF
25
025.
SPF025R
SPF 25A-R
100
0SPF025.HXR
07945817597
SPF
30
030.
SPF030R
SPF 30A-R
100
0SPF030.HXR
07945817600
001.
CATALOG
NUMBER
(FERRULE)
SPF001
INTERRUPTING
RATING (KA)
1
AMPERE
CODE
VOLTAGE
AMPERAGE
Electrical Specifications
DC
DC
SPF001R
1000
20
0.394
CATALOG
NUMBER
(PCB)
NOM COLD
RESISTANCE
(OHM)
WATTS LOSS AT
100 % RATED
CURRENT (W)
0.60
WATTS LOSS
AT 80 % RATED
CURRENT (W)
TOTAL
CLEARING I2T
(A2S) 20 KA
TOTAL
AGENCY APPROVALS
CLEARING I2T
(A2S) 50 KA
UL
CSA
TUV
0.41
0.6
–
•
•
•
2
002.
SPF002
SPF002R
1000
20
0.154
1.59
0.85
4.8
–
•
•
•
3
003.
SPF003
SPF003R
1000
20
0.110
1.50
0.82
7.9
–
•
•
•
3.5
03.5
SPF03.5
SPF03.5R
1000
20
0.078
1.37
0.78
11
–
•
•
•
4
004.
SPF004
SPF004R
1000
20
0.061
1.49
0.84
23
–
•
•
•
5
005.
SPF005
SPF005R
1000
20
0.041
1.47
0.86
43
–
•
•
•
6
006.
SPF006
SPF006R
1000
20
0.028
1.35
0.77
80
–
•
•
•
8
008.
SPF008
SPF008R
1000
20
0.018
1.61
0.91
199
–
•
•
•
10
010.
SPF010
SPF010R
1000
20
0.013
1.76
1.00
401
–
•
•
•
12
012.
SPF012
SPF012R
1000
20
0.010
1.97
1.11
642
–
•
•
•
15
015.
SPF015
SPF015R
1000
20
0.008
2.28
1.38
505
–
•
•
•
20
020.
SPF020
SPF020R
1000
20
0.005
2.81
1.57
1313
–
•
•
•
25
025.
SPF025
SPF025R
1000
20
0.004
3.33
1.88
2141
2433
•
•
•
30
030.
SPF030
SPF030R
1000
20
0.003
3.85
2.15
3290
3810
•
•
•
3 of 6
Littelfuse.com/SPF
© 2022 Littelfuse, Inc.
Rev: 110922
POWR-GARD® Fuse Datasheet
SPF SERIES SOLAR FUSES
Electrical Specification – Agency Requirements
AMPERAGE
RATING
OPENING TIME (MINUTES)
100 % of Amp
Rating per UL
105 % of Amp
Rating per IEC
135 % of Amp
Rating per UL
200 % of Amp
Rating per UL
Temperature
Stabilization
60 Min
60 Max
4 Max
1–30
PERCENT OF UPRATING
Temperature Derating Curve (temperature of air immediately surrounding fuse)
60
40
20
0
0
40
60
-60°C
-76°F
-40°C
-40°F
-20°C
-4°F
0°C
32°F
Recommended Process Parameters
WAVE PARAMETER
LEAD FREE RECOMMENDATION
Preheat:
(Typical industry recommendation)
Temperature minimum:
130 ˚C
Temperature maximum:
—
Pre-heat time
75 seconds maximum
Solder pot temperature
280 ˚C maximum
Solder dwell time
270 ˚C for 8 seconds maximum
Complete cycle time
250 seconds maximum
20°C
40°C
60°C
68°F
104°F
140°F
AMBIENT TEMPERATURE
80°C
176°F
100°C
212°F
120°C
248°F
PERCENT OF DOWNRATING
20
140°C
284°F
Soldering Parameters
4 of 6
Littelfuse.com/SPF
© 2022 Littelfuse, Inc.
Rev: 110922
POWR-GARD® Fuse Datasheet
SPF SERIES SOLAR FUSES
Time Current Curve (1–12 A)
1000
900
800
700
600
500
400
300
200
100
90
80
70
60
50
40
30
20
10
9
8
7
6
5
4
3
2
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
1000
900
800
700
600
500
1000
900
800
700
600
500
400
400
300
- 1A
300
200
- 2A
200
- 3A
- 3.5A
100
90
80
70
60
50
- 5A
40
- 6A
30
- 8A
40
30
- 10A
20
TIME IN SECONDS
100
90
80
70
60
50
- 4A
20
- 12A
10
9
8
7
6
5
10
9
8
7
6
5
4
4
3
3
2
2
1
0.9
0.8
0.7
0.6
0.5
1
0.9
0.8
0.7
0.6
0.5
0.4
0.4
0.3
0.3
0.2
0.2
0.1
0.09
0.08
0.07
0.06
0.05
0.1
0.09
0.08
0.07
0.06
0.05
0.04
0.04
0.03
0.03
0.02
0.02
0.01
0.01
1000
900
800
700
600
500
400
300
200
100
90
80
70
60
50
40
30
20
10
9
8
7
6
5
4
3
2
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
CURRENT IN AMPERES
TEST VOLTAGE:
TIME CONSTANT/POWER FACTOR:
1000V
FUSE CATALOG NUMBER:
Time Current Curve (15–20 A)
SPF 1A - 30A
BASIS FOR DATA:
LITTELFUSE, INC.
CHICAGO, IL. USA
TIME IN SECONDS
300
DRAWING NO.:
200
100
90
80
70
60
50
40
30
20
10
9
8
7
6
5
4
3
2
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
1000
900
800
700
600
500
400
TIME CURRENT CHARACTERISTIC CURVES
1000
900
800
700
600
500
400
DRAWN BY: LLL
DATE:
3/15/10
REVISION: D
FCC01-SPF
SHEET 2 OF 3
- THIS DATA GENERATED IN EXCEL -
1000
900
800
700
600
500
400
300
300
200
200
100
90
80
70
60
50
40
100
90
80
70
60
50
40
30
30
20
20
10
9
8
7
6
5
4
10
9
8
7
6
5
4
- 15A
- 20A
3
3
2
2
1
0.9
0.8
0.7
0.6
0.5
0.4
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.3
0.2
0.2
0.1
0.09
0.08
0.07
0.06
0.05
0.04
0.1
0.09
0.08
0.07
0.06
0.05
0.04
0.03
0.03
0 02
0.02
0 02
0.02
0.01
0.01
1000
900
800
700
600
500
400
300
200
100
90
80
70
60
50
40
30
20
10
9
8
7
6
5
4
3
2
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
CURRENT IN AMPERES
TEST VOLTAGE:
1000V
TIME CONSTANT/POWER FACTOR:
FUSE CATALOG NUMBER:
SPF 1A - 30A
BASIS FOR DATA:
LITTELFUSE, INC.
CHICAGO, IL. USA
TIME CURRENT CHARACTERISTIC CURVES
5 of 6
- THIS DATA GENERATED IN EXCEL -
DRAWN BY: LLL
DATE:
3/15/10
REVISION: E
DRAWING NO.:
FCC01-SPF
SHEET 3 OF 4
Littelfuse.com/SPF
© 2022 Littelfuse, Inc.
Rev: 110922
POWR-GARD® Fuse Datasheet
SPF SERIES SOLAR FUSES
Time Current Curve (25–30 A)
TIME IN SECONDS
1000
900
800
700
600
500
400
300
200
100
90
80
70
60
50
40
30
20
10
9
8
7
6
5
4
3
2
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
1000
900
800
700
600
500
400
1000
900
800
700
600
500
400
300
300
200
200
100
90
80
70
60
50
40
100
90
80
70
60
50
40
30
30
20
20
10
9
8
7
6
5
4
10
9
8
7
6
5
4
- 25A
- 30A
3
3
2
2
1
0.9
0.8
0.7
0.6
0.5
0.4
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.3
0.2
0.2
0.1
0.09
0.08
0.07
0.06
0.05
0.04
0.1
0.09
0.08
0.07
0.06
0.05
0.04
0.03
0.03
0 02
0.02
0 02
0.02
0.01
0.01
1000
900
800
700
600
500
400
300
200
100
90
80
70
60
50
40
30
20
10
9
8
7
6
5
4
3
2
1
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
CURRENT IN AMPERES
TEST VOLTAGE:
1000V
TIME CONSTANT/POWER FACTOR:
FUSE CATALOG NUMBER:
SPF 1A - 30A
BASIS FOR DATA:
LITTELFUSE, INC.
CHICAGO, IL. USA
TIME CURRENT CHARACTERISTIC CURVES
DRAWN BY: LLL
DATE:
3/15/10
REVISION: E
DRAWING NO.:
FCC01-SPF
SHEET 4 OF 4
- THIS DATA GENERATED IN EXCEL -
Disclaimer Notice - Littelfuse products are not designed for, and shall not be used for, any purpose (including, without limitation, automotive, military, aerospace, medical, life-saving, life-sustaining
or nuclear facility applications, devices intended for surgical implant into the body, or any other application in which the failure or lack of desired operation of the product may result in personal
injury, death, or property damage) other than those expressly set forth in applicable Littelfuse product documentation. Warranties granted by Littelfuse shall be deemed void for products used for any
purpose not expressly set forth in applicable Littelfuse documentation. Littelfuse shall not be liable for any claims or damages arising out of products used in applications not expressly intended by
Littelfuse as set forth in applicable Littelfuse documentation. The sale and use of Littelfuse products is subject to Littelfuse Terms and Conditions of Sale, unless otherwise agreed by Littelfuse.
Littelfuse.com/Product-Disclaimer
6 of 6
Littelfuse.com/SPF
© 2022 Littelfuse, Inc.
Rev: 110922
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