DATA SHEET
FUSIBLE CHIP RESISTORS
FRC01
5%
size 1206
Product Specification – Jul 11, 2003 V.10
Phycomp
Product specification
Fusible chip resistors
size 1206
FEATURES
•
Overload protection without the
risk of fire
•
Grey coating for ease of
recognition
•
Reduced size of final equipment
•
Low assembly costs
•
Higher component and equipment
reliability.
APPLICATIONS
•
Power supplies in small sized
equipment
•
Car telephones
•
Portable radio, CD and cassette
players.
DESCRIPTION
The resistors are constructed on a
high grade ceramic body (aluminium
oxide). Internal metal electrodes are
added at each end and connected
by a resistive paste which is applied
to the top surface of the substrate.
The composition of the paste is
adjusted to give the approximate
resistance required and the value is
trimmed to within tolerance by laser
cutting of this resistive layer.
The resistive layer is covered with a
protective coat and printed with the
resistance value. Finally, the two
external end terminations are added.
For ease of soldering the outer layer
of these end terminations is a
lead/tin alloy.
To enable recognition of a fusible
device, the resistor should be
mounted face up.
QUICK REFERENCE DATA
DESCRIPTION
Resistance range
Resistance tolerance
Temperature coefficient:
1 to 4.7
Ω
5.1 to 510
Ω
Absolute maximum dissipation at T
amb
= 70
°C
Maximum permissible voltage
Operating temperature range
Climatic category (IEC 60068)
Basic specification
ORDERING INFORMATION
Table 1
Ordering code indicating type and packing
ORDERING CODE 2322 750 …..
TYPE
PAPER TAPE ON REEL
5000 UNITS
FRC01
Ordering code (12NC)
•
The resistors have a 12-digit
ordering code starting with 2322.
•
The subsequent 4 digits indicate
the resistor type and packing;
see Table 1.
•
The remaining 4 digits indicate the
resistance value:
−
The first 3 digits indicate the
resistance value.
−
The last digit indicates the
resistance decade in
accordance with Table 2.
6….
Table 2
FRC01
5%
VALUE
1
Ω
to 510
Ω;
E24/E96 series
±5%
≤±250 ×
10
−6
/K
≤±200 ×
10
−6
/K
0.125 W
200 V (DC or RMS)
−55
to
+125 °C
55/125/56
IEC 60115-8
Last digit of 12NC
LAST DIGIT
8
9
1
RESISTANCE
DECADE
1 to 9.76
Ω
10 to 97.6
Ω
100 to 510
Ω
O
RDERING EXAMPLE
The ordering code of an FRC01
resistor, value 200
Ω,
packed in
paper tape and supplied on a reel of
5000 units is: 2322 750 62001.
2003 Jul 11 Rev.10
2
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Phycomp
Product specification
Fusible chip resistors
size 1206
FUNCTIONAL DESCRIPTION
Product characterization
Standard values of nominal
resistance are taken from the
E24/E96 series for resistors with a
tolerance of
±5%.
The values of the
E24/E96 series are in accordance
with “IEC publication 60063”.
Fusing characteristics
The resistors will fuse without the
risk of fire and within an indicated
range of overload. Fusing means
that the resistive value of the resistor
FRC01
5%
increases at least 100 times;
see Figs 1 and 2.
The fusing characteristic is
measured under constant voltage
with resistors mounted on a ceramic
or glass epoxy (FR4) substrate;
see Fig.3.
10
2
t
(s)
10
CCA852
10
2
t
(s)
10
CCA853
1
1
10
−1
10
−1
10
−2
10
−2
10
−3
0
2
4
6
8
10
P
overload
(W)
10
−3
0
2
4
6
8
10
P
overload
(W)
This graph is based on measured data which may
deviate according to the application.
This graph is based on measured data which may
deviate according to the application.
Fig.1
Fusing characteristic: 10
Ω ≤
R
<
510
Ω,
measured using ceramic board material.
Fig.2
Fusing characteristic: 1
Ω ≤
R
<
510
Ω,
measured using glass epoxy
(FR4) board material.
resistor mount (FACE UP)
lead frame mount
conductor:
Al
2
O
3
or FR4
40.3
×
7.6
×
0.635 mm
NiCr Au 1.5
µm
Ni 0.5
µm
Au 0.1
µm
1.7
×
1.0 mm
CCB649
Fig.3
Test substrate layout.
2003 Jul 11 Rev.10
3
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Phycomp
Product specification
Fusible chip resistors
size 1206
Limiting values
TYPE
FRC01
Notes
1.
The maximum voltage that may be continuously
applied to the resistor element, see
“IEC publication 60115-8”.
The maximum voltage that may be applied after
fusing is shown in Fig.4.
30
FRC01
5%
LIMITING
VOLTAGE
(1)
(V)
200
(2)
LIMITING
POWER
(W)
0.125
MBG605
50
Vmax
(V)
40
2.
20
D
ERATING
The power that the resistor can dissipate depends on the
operating temperature; see Fig.5.
10
1
10
10
2
Rn (Ω)
10
3
Fig.4
Maximum applied voltage after fusing.
P
ULSE LOADING CAPABILITIES
10
2
MBG607
Pmax
(%Prated )
100
MLB206
Vmax
(V)
1.2/50
µsec
10
10/700
µsec
50
0
55
0
50
70
100 125
o
Tamb ( C)
1
1
10
10
2
Rn (Ω)
10
3
These pulses may not be applied on a regular basis.
Fig.5
Maximum dissipation (P
max
) in
percentage of rated power as a function
of the ambient temperature (T
amb
).
Fig.6
Maximum permissible peak pulse voltage
without failing to ‘open circuit in
accordance with DIN IEC 60040 (CO) 533.
2003 Jul 11 Rev.10
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Phycomp
Product specification
Fusible chip resistors
size 1206
FRC01
5%
10
3
P max
(W)
10
2
MBG606
10
single pulse
1
tp/ti = 1000
10
−1
10
−6
10
−5
10
−4
10
−3
10
−2
10
−1
ti (s)
1
Fig.7
Pulse on a regular basis; maximum permissible peak pulse power (P
max
) as a
function of pulse duration, single pulse and repetitive pulse t
p
/t
j
= 1000.
600
V max
(V)
500
MBG608
400
300
200
100
0
10
−6
10
−5
10
−4
10
−3
10
−2
10
−1
ti (s)
1
Fig.8
Pulse on a regular basis; maximum permissible peak pulse power (V
max
) as
a function of pulse duration.
2003 Jul 11 Rev.10
5
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