Revised: May 6, 2009
151
© 2009 Littelfuse, Inc.
Specications are subject to change without notice.
Radial Lead Fuses
374 Series
TR5® > Time Lag > 374 Series
Please refer to www.littelfuse.com/series/374.html for current information.
374 Series
374 Series, TR5®, Time-Lag Fuse
Agency Approvals
Agency Agency File Number Ampere Range
File number:
E 67006 50mA - 6.3A
Certication:
51378 50mA - 6.3A
File number:
E 67006 8A - 10A
Features
Electrical Characteristics
t -FBEoGSFF
t 3FEVDFE1$#TQBDF
SFRVJSFNFOUT
t %JSFDUTPMEFSBCMFPS
QMVHoJOWFSTJPOT
t *OUFSOBUJPOBMMZ
BQQSPWFE
t -PXJOUFSOBMSFTJTUBODF
t 4IPDLTBGFDBTJOH
t 7JCSBUJPOSFTJTUBOU
t )BMPHFOGSFF
t "WBJMBCMFGSPNN"
to 10A
% of Ampere
Rating Opening Time
200% 4FDPOETMax.
Applications
t #BUUFSZ$IBSHFST
t $POTVNFS&MFDUSPOJDT
t 1PXFSTVQQMJFT
t *OEVTUSJBM$POUSPMMFST
Description
5IF53® 4FSJFTBSFUJNFo-BH7SBUFEGVTFTUIBU
BSFEFTJHOFEJOBDDPSEBODFUP6-o
Revised: May 6, 2009
Introduction to Circuit Protection
Introduction to Circuit Protection
Transientology
152 © 2009 Littelfuse, Inc.
Specications are subject to change without notice.
Radial Lead Fuses
374 Series
TR5® > Time Lag > 374 Series
Please refer to www.littelfuse.com/series/374.html for current information.
Average Time Current CurvesTemperature De-Rating Curve
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
min. (A2s)
Agency Approvals
®
0050 50mA 7
"7"$
)[
DPTϕ = 1.0
900 45 0.0056 x x
0063 63mA 7 800 50 0.009 x x
0080 80mA 7 700 55 0.014 x x
0100 100mA 7 600 60 0.025 x x
0125 125mA 7 550 70 0.044 x x
0160 160mA 7 480 80 0.058 x x
0200 200mA 7 390 80 0.1 x x
0250 250mA 7 350 90 0.17 x x
0315 315mA 7 300 95 0.26 x x
0400 400mA 7 250 100 0.32 x x
0500 500mA 7 220 110 0.6 x x
0630 630mA 7 210 135 0.75 x x
0800 800mA 7 160 130 0.98 x x
1100 1.00A 7 155 155 2.1 x x
1125 1.25A 7 145 185 3.2 x x
1160 1.60A 7 130 210 4.5 x x
1200 2.00A 7 125 250 7.5 x x
1250 2.50A 7 120 300 14 x x
1315 3.15A 7 110 350 22 x x
1400 4.00A 7 100 400 36 x x
1500 5.00A 7 95 475 59 x x
1630 6.30A 7 90 570 110 x x
1800 8.00A1 7 80 1000 150 x
2100 10.00A17 90 1250 280 x
/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
0.050A
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
Revised: May 6, 2009
153
© 2009 Littelfuse, Inc.
Specications are subject to change without notice.
Radial Lead Fuses
374 Series
TR5® > Time Lag > 374 Series
Please refer to www.littelfuse.com/series/374.html for current information.
374 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$DPOTJEFSEFSBUJOH
Climatic Category $$EBZT
&/
Stock Conditions
+10ºC to +60ºC
3)õZFBSMZBWFSBHFXJUIPVU
EFXNBYJNVNWBMVFGPSEBZT
95%
Vibration Resistance
DZDMFTBUNJOFBDI
(EN 60068-2-6)
)[BUNNBNQMJUVEF
)[BU(TBDDFMFSBUJPO
Dimensions
8.5
0.5 min
max. 8L
0.6
5.08
LhidLi l
1 +0.1
)PMFTJO1$#
-POH-FBET-NN
4IPSU-FBET-NN
Part Numbering System
Packaging
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:
Packaging Option Packaging Specication Quantity Quantity &
Packaging Code Taping Width
374 Series
5BQF"NNPQBDL N/A  0000 N/A
4IPSU-FBET N/A  0410 N/A
4IPSU-FBET N/A 200 0430 N/A
0000374 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