147
© 2009 Littelfuse, Inc.
Specications are subject to change without notice.
Radial Lead Fuses
373 Series
TR5® > Fast-Acting > 373 Series
Please refer to www.littelfuse.com/series/373.html for current information.
373 Series
373 Series, TR5®, Fast-Acting Fuse
Agency Approvals
Agency Agency File Number Ampere Range
File number:
E 67006 50mA - 6.3A
Certication:
51378 50mA - 6.3A
File number:
E67006 8A - 10A
Features
Electrical Characteristics
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SFRVJSFNFOUT
t %JSFDUTPMEFSBCMFPS
QMVHJO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"
to 10A
% of Ampere
Rating Ampere Rating Opening Time
200%
50mA - 6.3A 4FDPOETMax.
8A - 10A 4FDPOETMax.
Applications
 $POEVDUJOHQBUIDSPTTTFDUJPONJOJNVNöNN2
Electrical Characteristics
Amp
Code
Rated
Current
Voltage
Rating Breaking Capacity
Voltage
Drop
1.0 x IN
max. (mV)
Power
Dissipation
1.0 x IN
max. (mW)
Melting
Integral
10 x IN
max. (A2s)
Agency Approvals
®
0050 50mA 7
"7"$
)[
DPTϕ = 1.0
1400 70 0.0001 XX
0063 63mA 7 1300 85 0.00023 XX
0080 80mA 7 1200 100 0.00037 XX
0100 100mA 7 110 0 110 0. 0 013 XX
0125 125mA 7 1000 125 0.0019 XX
0160 160mA 7 950 155 0.004 XX
0200 200mA 7 850 170 0.0065 XX
0250 250mA 7 750 190 0.014 XX
0315 315mA 7 650 205 0.032 XX
0400 400mA 7 230 95 0.016 XX
0500 500mA 7 220 110 0.025 XX
0630 630mA 7 210 135 0.045 XX
0800 800mA 7 200 160 0.069 XX
1100 1.00A 7 190 190 0.125 XX
1125 1.25A 7 180 225 0.2 XX
1160 1.60A 7 170 275 0.38 XX
1200 2.00A 7 160 320 0.63 XX
1250 2.50A 7 150 375 1.2 XX
1315 3.15A 7 140 445 1.9 XX
1400 4.00A 7 130 520 3.5 XX
1500 5.00A 7 120 630 6.2 XX
1630 6.30A 7 115 1000 9.1 XX
1800 8.00A17 120 1600 30 X
2100 10.00A1 7 110 2000 55 X
/PUFNFBOTUIFOVNCFSPOFXJUIUXPEFDJNBMQMBDFTNFBOTUIFOVNCFSPOFUIPVTBOE
t #BUUFSZ$IBSHFST
t $POTVNFS&MFDUSPOJDT
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Description
5IF53® 4FSJFTBSFGBTUoBDUJOH7SBUFEGVTFTUIBU
BSFEFTJHOFEJOBDDPSEBODFUP6-o
Revised: September 9, 2010
Introduction to Circuit Protection
Introduction to Circuit Protection
Transientology
148 © 2009 Littelfuse, Inc.
Specications are subject to change without notice.
Radial Lead Fuses
373 Series
TR5® > Fast-Acting > 373 Series
Please refer to www.littelfuse.com/series/373.html for current information.
Average Time Current CurvesTemperature Rerating Curve
CURRENT IN AMPERES
TIME IN SECONDS
0.001
0.010
0.100
1
10
100
1000
10000
100000
0.100 1 10 1000.02
0.050A
0.063A
0.080A
0.100A
0.125A
0.160A
0.200A
0.250A
0.315A
0.400A
0.500A
0.630A
0.800A
1.00A
1.25A
1.60A
2.00A
2.50A
3.15A
4.00A
5.00A
6.30A
8.00A
10.00A
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 TFDPOET
Solder Pot Temperature: 260° $.BYJNVN
Solder Dwell Time: TFDPOET
Recommended Hand-Solder Parameters:
4PMEFS*SPO5FNQFSBUVSF¡$¡$
)FBUJOH5JNFTFDPOETNBY
Note: These devices are not recommended for IR or
Convection Reow process.
Recommended Process Parameters:
0
20
40
60
80
100
120
140
-40-200 20406080
AMBIENT TEMPERATURE (°C)
PERCENT OF RATING
23°C
149
© 2009 Littelfuse, Inc.
Specications are subject to change without notice.
Radial Lead Fuses
373 Series
TR5® > Fast-Acting > 373 Series
Please refer to www.littelfuse.com/series/373.html for current information.
373 Series
Materials
#BTF$BQ#SPXO5IFSNPQMBTUJD
1PMZBNJEF1"6-7
3PVOE1JOT$PQQFS5JOQMBUFE
Lead Pull Strength /&/
Solderability $õT8BWF
$õT4PMEFSJOH*SPO
Soldering Heat
Resistance
$T*&$
$T4PMEFSJOH*SPO
Product Characteristics
Operating Temperature $UP$DPOTJEFSEFSBUJOH
Climatic Category $$EBZT
&/
Stock Conditions
$UP$
3)õZFBSMZBWFSBHFXJUIPVU
EFXNBYJNVNWBMVFGPSEBZT
95%
Vibration Resistance
DZDMFTBUNJOFBDI
&/
)[BUNNBNQMJUVEF
)[BU(TBDDFMFSBUJPO
Dimensions
8.5
0.5 min
max. 8L
0.6
5.08
1 +0.1
)PMFTJO1$#
-POH-FBET-NN
4IPSU-FBET-NN
Part Numbering System
Packaging
0000373 xxxx
Packaging Code
Amp Code
Series
0000 Tape/Ammopack (1,000 pcs.)
0410 Short Leads - Bulk (1,000 pcs.)
0430 Short Leads - Bulk (200 pcs.)
Refer to Amp Code column of
Electrical Characteristics Table
Packaging Option Packaging Specication Quantity Quantity &
Packaging Code Taping Width
373 Series
#VML N/A  .9 N/A
#VML N/A  .9& N/A
Introduction to Circuit Protection
Introduction to Circuit Protection
Transientology
150© 2009 Littelfuse, Inc.
Specications are subject to change without notice.