®
Bu s s m a n n
S MT Ch ip Fu s e
S u b m in ia t u re S u rfa c e Mo u n t Fu s e s
3 2 1 6 FF
R
R
Dim e ns iona l Da ta
mm (inches)
3.20 ± 0.2
(0.126 ± 0.008)
1.60 ± 0.2
(0.063 ± 0.008)
1A
0.50 ± 0.25
(0.020 ± 0.010)
Ca ta log Sym bol: 3216FF
Volta ge Ra ting: 32 Volt AC, 63 Volt DC (250mA-3A)
0.90 + 0.20, -0.15
(0.035 + 0.008, -0.006)
32 Volt AC, 32 Volt DC (4-6.5A)
Inte rrupting Ra ting: 50 Amp AC/DC
Ge ne ra l Inform a tion:
Phys ic a l Size :
• Bussmann SMT Chip Fuses utilize metal film and ultrasonic
wire bond technologies for superior fusing action and
enhanced reliability.
• The fuse element is bonded to a ceramic substrate and
encapsulated with green-colored glass, providing excellent
short-circuit performance and environmental integrity.
• Substrate and coating thermal expansion coefficients are
closely matched to that of FR-4 epoxy-glass circuit board
for superior joint reliability.
EIA SOCM-3216AC (Equivalent to 1206)
3.2 ≈ 1.6 ≈ 0.90mm
0.126 ≈ 0.063 ≈ 0.035 in.
Age nc y Approva ls :
UL Recognized, Std. 248-14
All Ratings - File E19180, Guide JDYX2
CSA Certified:
1.5-3A - File 53787, Class 1422-01
CSA Component Acceptance
250mA,1A, 4-6.5A - File 53787, Class 1422-30
• The end terminations are over-plated with nickel and tin-
lead.
EIA-RS481 (equivalent to IEC 286, Part 3).
• Fuses are orientated in embossed pockets with ceramic
side facing up to facilitate proper mounting (see “Electrical
Characteristics”, General Note 4.)
Tim e -Curre nt Cha ra c te ris tic s
• Fast acting fuse: Will carry 100% of rated current for a
minimum of 4 hours, and will open within 5 seconds at
250% of rated current (250mA-3A).
3216FF
(See Table)
• The 4-6.5A fuses will open within 1 second at 350% of
rated current.
Packaging & Ordering Information:
• Tape and Reel: Standard 8mm tape, in compliance with
Product
Symbol
Rated Current
Package Code
TR/ 3,000 pcs., on a 178mm reel, 8mm tape width
SP/ 50 pcs. on tape in a plastic box
TR1/ 15,000 pcs., on a 330mm reel, 8mm tape width
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 636-527-1270 for more information.
Electrical Characteristics
Current
Rating
(Ampere)
Mark
Appearing
On Part
Typical Melting
Integral @ 50A
(A2 * sec)
Typical Total
Clearing Integral
@ 50A (A2 * sec)
Typ. Resistance
@ ≤10% Rated
Current (Ohms)
Typ. Voltage
Drop @ Rated
Current (Volts)
Part Number
(XX=Package Code)
AC
DC
AC
DC
XX/3216FF-250mA
XX/3216FF-375mA
XX/3216FF-500mA
.250
.375
.500
.25
White Dot
0.5
.00016
.001
.0014
.000084
.0002
.0019
.00017
.0010
.0016
.0001
.0009
.0026
4.50
1.80
1.15
1.4
.73
.66
XX/3216FF-750mA
XX/3216FF-1A
XX/3216FF-1.5A
.750
1
1.5
.75
1
1.5
.0033
.012
.047
.00095
.007
.029
.0033
.014
.048
.0042
.009
.034
.75
.168
.098
.63
.20
.18
XX/3216FF-2A
XX/3216FF-2.5A
XX/3216FF-3A
XX/3216FF-4A
XX/3216FF-4.5A
XX/3216FF-5A
XX/3216FF-6.5A
2
2.5
3
4
4.5
5
2
2.5
3
4
4.5
5
.116
.208
.426
.187
.546
.663
.081
.171
.359
.164
.463
.619
.136
.210
.507
.208
.550
.668
.092
.198
.369
.168
.47
.623
3.23
.063
.046
.037
.019
.014
.013
.0085
.16
.14
.13
.11
.10
.09
.076
6.5
6.5
2.18
3.21
2.21
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 (4-6.5A), with a battery source.
3. Voltage drop measured at 23 ± 3°C ambient temperature with the device mounted on a suitable circuit board trace.
4. It is recommended that fuses be mounted with ceramic (white) side facing up.
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.
6. Contact Bussmann if higher ampere ratings are needed.
Form No. 3216FF
Page 1 of 2
BIF Doc #3001
9-7-99
E99039 Rev. A
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