139
© 2009 Littelfuse, Inc.
Specications are subject to change without notice.
Radial Lead Fuses
370 Series
Please refer to www.littelfuse.com/series/370.html for current information.
Radial Lead
TR5® > Fast-Acting > 370 Series
370 Series
370 Series, TR5®, Fast-Acting Fuse
Agency Approvals
Agency Agency File Number Ampere Range
License number:
5007679-1170-0001/82438 100mA - 5A
License number:
5007679-1170-0001/97059
5007679-1170-0009/97069
5007679-1170-0002/82443
40mA
50mA - 80mA
6.3A
Certicate number:
1012264 50mA - 6.3A
File number:
E67006 40mA - 6.3A
JET0381-31007-2003 1A - 5A
2007010207240347 50mA - 5A
Features
Electrical Characteristics
t 3FEVDFE1$#TQBDF
requirements
t %JSFDUTPMEFSBCMFPS
QMVHJOWFSTJPOT
t *OUFSOBUJPOBMMZ
BQQSPWFE
t -PXJOUFSOBMSFTJTUBODF
t 4IPDLTBGFDBTJOH
t 7JCSBUJPOSFTJTUBOU
t )BMPHFOGSFF
t -FBEGSFF
t "WBJMBCMFGSPNN"
UP"
% of Ampere
Rating Opening Time
150% )PVSMin.
210% .JOVUFTMax.
275% NTMin. 4FDMax.
400% NTMin. NTMax.
1000% NTMax.
Applications
5IF4FSJFTBSF53®TVCNJOJBUVSFGBTUBDUJOHUZQF
7SBUFEGVTFTEFTJHOFEJOBDDPSEBODFUP*&$
3.
t #BUUFSZ$IBSHFST
t $POTVNFS&MFDUSPOJDT
t 1PXFSTVQQMJFT
t *OEVTUSJBM$POUSPMMFST
Description
Revised: March 8, 2011
Introduction to Circuit Protection
Introduction to Circuit Protection
Transientology
140 © 2009 Littelfuse, Inc.
Specications are subject to change without notice.
Radial Lead Fuses
370 Series
Please refer to www.littelfuse.com/series/370.html for current information.
Radial Lead
TR5® > Fast-Acting > 370 Series
Average Time Current CurvesTemperature Rerating Curve
Electrical Characteristics
Amp
Code
Rated
Current
Voltage
Rating Breaking Capacity
Voltage
Drop
1.0 x IN
max. (mV)
Power
Dissipation
1.5 x IN
max. (mW)
Melting
Integral
10 x IN
max. (A2s)
Agency Approvals
0040 40mA 7
"7"$1
)[DPTϕ = 1.0
900 100 0.0002 GX
0050 50mA 7 320 80 0.00035 XX X X
0063 63mA 7 350 100 0.0005 XX X X
0080 80mA 7 370 120 0.0014 XX X X
0100 100mA 7 600 130 0.0038 XX X X
0125 125mA 7 550 172 0.0066 XX X X
0160 160mA 7 500 165 0.014 XX X X
0200 200mA 7 465 190 0.03 XX X X
0250 250mA 7 400 250 0.051 XX X X
0315 315mA 7 380 250 0.1 XX X X
0400 400mA 7 120 135 0.025 XX X X
0500 500mA 7 120 155 0.042 XX X X
0630 630mA 7 115 200 0.076 XX X X
0800 800mA 7 120 310 0.12 XX X X
1100 1.00A 7 110 310 0.2 XX X XX
1125 1.25A 7 100 360 0.31 XX X XX
1160 1.60A 7 100 600 0.53 XX X XX
1200 2.00A 7 85 500 0.98 XX X XX
1250 2.50A 7 80 660 1.8 XX X XX
1315 3.15A 7 90 950 3.1 XX X XX
1400 4.00A 7 "7"$ 80 920 6.7 XX X XX
1500 5.00A 7 "7"$ 80 1000 12.00 XX X XX
1630 6.30A* 7 70 1200 24.00 GX X
 1FS6-BQQSPWFECSFBLJOHDBQBDJUZJT"BU7
 $POEVDUJOHQBUINJONN2
(&YQFSU3FQPSUQFOEJOH
/PUFNFBOTUIFOVNCFSPOFXJUIUXPEFDJNBMQMBDFTNFBOTUIFOVNCFSPOFUIPVTBOE
CURRENT IN AMPERES
TIME IN SECONDS
0.001
0.010
0.100
1
10
100
1000
10000
100000
0.100 1 10 1000.02
0.040
A
0.050
A
0.063
A
0.080
A
0.100
A
0.125
A
0.160
A
0.200
A
0.250
A
0.315
A
0.400
A
0.500
A
0.630
A
0.800
A
1.00A
1.25A
1.60A
2.00A
2.50A
3.15A
4.00A
5.00A
6.30A
CURRENT IN AMPERES
TIME IN SECONDS
0.001
0.010
0.100
1
10
100
1000
10000
100000
0.100 1 10 1000.02
0.040
A
0.050
A
0.063
A
0.080
A
0.100
A
0.125
A
0.160
A
0.200
A
0.250
A
0.315
A
0.400
A
0.500
A
0.630
A
0.800
A
1.00A
1.25A
1.60A
2.00A
2.50A
3.15A
4.00A
5.00A
6.30A
0
20
40
60
80
100
120
140
-40-200 20406080
AMBIENT TEMPERATURE (°C)
PERCENT OF RATING
23°C
141
© 2009 Littelfuse, Inc.
Specications are subject to change without notice.
Radial Lead Fuses
370 Series
Please refer to www.littelfuse.com/series/370.html for current information.
Radial Lead
TR5® > Fast-Acting > 370 Series
370 Series
Materials
#BTF$BQ#SPXO5IFSNPQMBTUJD
1PMZBNJEF1"6-7
3PVOE1JOT$PQQFS5JOQMBUFE
Lead Pull Strength 10 N (EN 60068-2-21)
Solderability $õT8BWF
$õT4PMEFSJOH*SPO
Soldering Heat
Resistance
$T*&$
$T4PMEFSJOH*SPO
Product Characteristics
Operating Temperature $UP$DPOTJEFSEFSBUJOH
Climatic Category $UP$EBZT
*&$
Stock Conditions
$UP$
3)õZFBSMZBWFSBHFXJUIPVU
EFXNBYJNVNWBMVFGPSEBZT
95%
Vibration Resistance
DZDMFTBUNJOFBDI
(EN 60068-2-6)
)[BUNNBNQMJUVEF
)[BU(BDDFMFSBUJPO
Soldering Parameters - Wave Soldering
Dwell Time
0
20
40
60
80
100
120
140
160
180
200
220
240
260
280
300
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
170
180
190
200
210
220
230
240
Time (Seconds)
Temperature (°C) - Measured on bottom side of board
Cooling Time
Preheat Time
Wave Parameter Lead-Free Recommendation
Preheat:
%FQFOETPO'MVY"DUJWBUJPO5FNQFSBUVSF 5ZQJDBM*OEVTUSZ3FDPNNFOEBUJPO
5FNQFSBUVSF.JOJNVN 100°C
5FNQFSBUVSF.BYJNVN 150°C
1SFIFBU5JNF 4FDPOET
Solder Pot Temperature: 260°C Maximum
Solder Dwell Time: 4FDPOET
Recommended Hand-Solder Parameters:
4PMEFS*SPO5FNQFSBUVSF¡$¡$
)FBUJOH5JNFTFDPOETNBY
Note: These devices are not recommended for IR or
Convection Reow process.
Recommended Process Parameters:
Introduction to Circuit Protection
Introduction to Circuit Protection
Transientology
142 © 2009 Littelfuse, Inc.
Specications are subject to change without notice.
Radial Lead Fuses
370 Series
Please refer to www.littelfuse.com/series/370.html for current information.
Radial Lead
TR5® > Fast-Acting > 370 Series
Dimensions
)PMFTJO1$#
Part Numbering System
Packaging
8.5
0.5 min
max. 8L
0.6
5.08
1 +0.1
-POH-FBET-NN
4IPSU-FBET-NN
Packaging Option Packaging Specication Quantity Quantity &
Packaging Code Taping Width
370 Series
5BQF"NNPQBDL N/A  0000 N/A
4IPSU-FBET N/A  0410 N/A
0000370 xxxx
Packaging Code
Amp Code
Series
0000 Tape/Ammopack (1,000 pcs.)
0410 Short Leads - Bulk (1,000 pcs.)
Refer to Amp Code column of
Electrical Characteristics Table