鈮?/div>
0.032 in.
Time-Current Characteristics:
Carry 100% rated current, 4 hours minimum. Open within
5 seconds at 250% rated current.
Agency Approvals:
UL Recognized, Std. 248-14, File E19180, Guide JDYX2
CSA Component Acceptance File 53787, Class 1422-30
General Information:
鈥?Bussmann SMT Chip Fuses utilize thick and thin metal
film technologies for superior fusing action and enhanced
reliability.
鈥?The fuse element is bonded to a ceramic substrate and
encapsulated with glass, providing excellent short-circuit
performance and environmental integrity. Predicted reliability
of the 1608FF chip fuse is 30 times greater than that of the
typical chip capacitor (consult Bussmann for details).
鈥?Substrate and coating thermal expansion coefficients are
closely matched to that of FR-4 epoxy-glass circuit board for
superior solder joint reliability.
鈥?The end terminations are over-plated with nickel and tin-lead.
0.36
鹵
0.15
(0.014
鹵
0.006)
0.80
鹵
0.15
(0.032
鹵
0.006)
Construction
1
2
3 4
5
6
7 8
1.
2.
3.
4.
5.
Ceramic Substrate
Silver Termination Pad
Metal Film Fusible Element
Fused Glass Cover (Color Coded)
White Stripe (Only On Certain
Ratings)
6. Silver End Termination
7. Nickel Barrier (5.1-10.2 碌m)
8. 90/10 Tin-Lead Plating
(7.6-12.7 碌m)
SUBSTRATE
Not to Scale.
Packaging and Ordering Information:
Tape and Reel:
Standard 8mm tape, in compliance with
EIA-RS481 (equivalent to IEC 286, Part 3).
1608FF
Product
Symbol
(See Table)
Rated Current
Package Code
TR
=
3,000 pieces on tape on a 178mm reel.
TR1
= 15,000 pieces on tape on a 330mm reel.
SP
= 50 pieces on tape in a plastic box.
Contact Bussmann if other package quantities are required.
CE logo denotes compliance with European Union Low Voltage Directive
(50-1000 VAC, 75-1500 VDC). Refer to BIF document #8002 or contact
Bussmann Application Engineering at 314-527-1270 for more information.
Electrical Characteristics
Part Number
(XX=Package Code)
xx/1608FF-250mA
xx/1608FF-375mA
xx/1608FF-500mA
xx/1608FF-750mA
xx/1608FF-1A
xx/1608FF-1.5A
xx/1608FF-2A
xx/1608FF-2.5A
xx/1608FF-3A
xx/1608FF-3.5A
xx/1608FF-4A
Current
Rating
(Amperes)
0.25
0.375
0.5
0.75
1
1.5
2
2.5
3
3.5
4
Color
Code
(Cover/Stripe)
Green
Green/White
Blue
Blue/White
Brown
Brown/White
Black
Black/White
Violet
Violet/White
Yellow
Typ. Resistance
@
虜
10% Rated
Current (Ohms)
3.0
2.0
0.9
0.51
0.15
0.068
0.042
0.029
0.022
0.018
0.014
Typ. Voltage
Drop @ Rated
Current (Volts)
0.90
0.80
0.54
0.45
0.18
0.12
0.11
0.09
0.087
0.08
0.08
Typ. Melting
Integral @ 35A
(A
2
sec.)
.000067
.00015
.00055
.00132
.0022
.014
.037
.070
.095
.185
.270
Typ. Total
Clearing Integral
@ 35A (A
2
sec.)
.000082
.00017
.00058
.00137
.0026
.015
.038
.078
.107
.190
.272
General Notes:
1.
AC interrupting rating, melting integral and total clearing integral measured at 32V, unity power factor.
2.
DC interrupting rating, melting integral and total clearing integral measured at 63V (250mA-3A) and 32V (4-5A), with a battery source.
3.
It is recommended that fuses be mounted with ceramic (white) side facing up.
4.
Contact Bussmann if higher ampere ratings are needed.
5.
Device designed to carry rated current for four hours minimum. An operating current of 80% or less of rated current is recommended,
with further derating required at elevated ambient temperatures.
12-16-98
SB98107 Rev. A
Form No. 1608FF
Page 1 of 2
BIF Doc #3002
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