171
© 2009 Littelfuse, Inc.
Specications are subject to change without notice.
Radial Lead Fuses
TE5® > Fast Acting > 391 Series
391 Series
Please refer to www.littelfuse.com/series/391.html for current information.
391 Series
Features
Electrical Characteristics
Electrical Characteristics
Agency Approvals
Agency Agency File Number Ampere Range
E67006 125mA - 4A
391 Series, TE5®, Fast-Acting Fuse
t 'PSXPSMEXJEF
BQQMJDBUJPOT
t 3FEVDFE1$#TQBDF
SFRVJSFNFOUT
t )JHIMZEFåOFEDVUPGG
UJNFT
t *SSFWFSTJCMFQIZTJDBM
TFQBSBUJPO
t -PXJOUFSOBMSFTJTUBODF
t 'MBNFSFTJTUBOU
FODBQTVMBUFEDBTJOH
t 3P)4DPNQMJBOUBOE
-FBEGSFF
t "WBJMBCMFGSPNN"
UP"
% of Ampere
Rating Opening Time
300 4FDPOET Max.
Amp Code Rated
Current
Marking
Code*
Voltage
Rating Breaking Capacity
Cold
Resistance
0.1 x IN
max. (mΩ)
Power
Disspation
1.0 x IN
max. (mW)
Melting
Integral
10 x IN
max. (A2s)
Agency
Approvals
0125 125 mA 41 65 V
"7"$%$
)[DPTϕ
3400 190  x
0160 160 mA 41 65 V 2450 210  x
0200 200 mA 41 65 V 1750 240  x
0250 250 mA 41 65 V 195 52  x
0315 315 mA 41 65 V 155 65  x
0400 400 mA 41 65 V 120   x
0500 500 mA 41 65 V 95 105  x
0630 630 mA 41 65 V 75 135  x
 N" 41 65 V  170  x
110 0 " 41 65 V 46 220  x
1125 " 41 65 V 37 270  x
1160 " 41 65 V 29 350  x
1200 " 41 65 V 23 440  x
1250 " 41 65 V  550  x
1315 " 41 65 V 14 700  x
1400 " 41 65 V 12 900  x
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5IF4FSJFTBSF5&®TIPSUDJSDVJUQSPUFDUPSGBTUBDUJOH
UZQF7SBUFEGVTFT'PS4IPSU$JSDVJU1SPUFDUJPOPG
4FOTJUJWF&MFDUSPOJD$PNQPOFOUTBOE"TTFNCMJFT
Description
Applications
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t $POTVNFS&MFDUSPOJDT
t 1PXFSTVQQMJFT
t *OEVTUSJBMDPOUSPMMFST
Revised: June 17, 2009
Introduction to Circuit Protection
Introduction to Circuit Protection
Transientology
172 © 2009 Littelfuse, Inc.
Specications are subject to change without notice.
Radial Lead Fuses
TE5® > Fast Acting > 391 Series
391 Series
Please refer to www.littelfuse.com/series/391.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
1 10 100 10000.20
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
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° $
5FNQFSBUVSF.BYJNVN 150° $
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:
173
© 2009 Littelfuse, Inc.
Specications are subject to change without notice.
Radial Lead Fuses
TE5® > Fast Acting > 391 Series
391 Series
Please refer to www.littelfuse.com/series/391.html for current information.
391 Series
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
Vibration Resistance
DZDMFTBUNJOFBDI
&/
)[BUNNBNQMJUVEF
)[BUHBDDFMFSBUJPO
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
$T*&$
$T4PMEFSJOH*SPO
8,5
0,5 min
max. 818,8
0,6
5,08
1 +0,1
1,5
max.4
Dimensions Part Numbering System
)PMFTJO1$#
%JNFOTJPOTNN
Packaging
Packaging Option Packaging Specication Quantity Quantity &
Packaging Code Taping Width
391 Series
5BQF"NNPQBDL N/A  0000 N/A
0000391 xxxx
Packaging Code
Amp Code
Series
0000 Tape/Ammopack (1,400 pcs.)
Refer to Amp Code column of
Electrical Characteristics Table
Introduction to Circuit Protection
Introduction to Circuit Protection
Transientology
174© 2009 Littelfuse, Inc.
Specications are subject to change without notice.