Chip Resistor Networks
RNA4A Series
Features
• Reduction in mounting costs & Process
• Save PCB space
• Eight resistors in one SMD package
• Reduction of inventory control costs
How to Order
RNA4A 8E 103 J
T
q
w
e rt
qSeries
wNumber
of elements(8E : 8 elements)
eResistance
code (3 digits)
rResistance
tolerance(J :
±5%)
tPackaging
T
Plastic Taping, 4,000pcs/reel
∗
Taping Qty: 4000pcs/7 inch reel (4mm pitch)
Carrier Tape: plastic
Applications
• Lap Top Computer
• Printer
• CD ROM
• Notebook Computer
• Hard Disk Drive
• Facsimile
RoHS Conforming
Shape and Dimensions
F1
P
D
A1
F2
A2
(Unit : mm)
Circuit Diagram
R
B1
R
R
R
103
L
E1
E2
W
B2
R
T
R
R
R
Code
Dimensions
L
4.0±0.15
E1
0.5±0.1
B2
0.4±0.15
W
2.1±0.15
F1
0.3±0.15
E2
0.5±0.1
T
0.6±0.1
D
0.3typ
F2
0.35±0.15
A1
0.5±0.1
P
0.8typ
B1
0.25±0.15
A2
0.4±0.1
∗
nominal resistance value is all the same.
Code
Dimensions
Code
Dimensions
Specifications
Item
Rated power(70°C)
∗
Max working voltage
Max over-load voltage
Rating
1/16W(0.0625W)/Element
25V
50V
100Ω to 220KΩ
J:±5%
8E:8 Elements
−55
to
+125°C
Resistance value
Tolerance
Number of elements
Working temperature
∗
Rated Voltage: Rated power
×Resistance
value, whichever is less.
∗
Standard Resistance Value: E-6 Series
∗
If resistance value under 100Ω is needed, please contact sales.
Precautions
Circuit design
1) Once application and assembly environments have been checked,
the resistors may be used in conformance with the catalog and the
specifications.
2) Please consult the manufacturer in advance when the resistors is
used in devices such as: devices which deal with human life, I.e.
medical devices; devices which are highy public orientated; and
devices which demand a high standerd of liability.
3) Please use the resistors in conformance with the operating
temperature provided in both the catalog and the specifications.
4) Please keep voltage under the rated voltage which is applied to the
resistor.
5) Do not use the resistor in an environment where it might easily
exceed the respective provisions concerning shock and vibration
specified in the catalog and specifications.
6) Please do not use the resistor in the following environments.
qState
that water, oil, and solvent hang in resistor
wState
where poisonous gas (sulfur and chlorine, etc.) exists
eState
that direct sunshine, radiation, and ultraviolet, etc. are irradiated
7) There is a thing that resistance changes according to the stuff of the
resin when the coating with the resin is given.
Please use resin coating after confirming the characteristic.
8) There is a thing that resistance changes according to flux and
cleaner.
Please use flux and cleaner after confirming the characteristic.
9) Please consult about a lead free products.
Soldering method
1) Recommendable temperature profile
reflow
Temp(°C)
300
230 to 250°C
250
200
150
100
50
0
(Time)
60 sec.
60 sec.
10 sec. max.
preheat
More than 180°C
40 sec. max.
2) Recommendable temperature profile
wave
Temp(°C)
300
230 to 250°C
250
200
150
100
50
0
(Time)
60 to 120 sec.
3 sec. max.
preheat
∆T
(Caution) Cooling after soldering should be as slow as possible.
Ensure that the chip Resistor is preheated adequately.
Ensure that the temperature difference(∆T) does not exceed 130˚C.
Storage
1) Keep storage place temperature
+5
to
+35˚C,
humidity 45 to 75%
RH.
2) Please keep parts out of poisonous gas such as sulfur or chlorine in
the air, and out of salty moisture. Or they may cause rust of
terminal, and poor solderability. and, please consider the above-
mentioned item after mounting your company.
3) Soldering iron
Temperature
Time
soldering iron 300±5°C *
3 sec. max.
*
3) pb-free recommendable temperature profile
reflow
Temp(°C)
300
250
preheat
200
150
100
50
0
1 to 3°C/sec.
170 to 180°C
Peak temperature
250°C±5°C
5 to 10 sec. max.
More than 220°C
90 sec. max.
(Time)
90±30 sec.
*Do not place the soldering iron on the chip. Soldering iron is 30W max.
PCB设计
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