CYNTEC CO., LTD.
DOCUMENT : RLWL0000N
REVISION : A0
PAGE : 1 OF 6
(3)
(2)
(1)
(4)
L
a
a
(Bottom View)
R100
W
t
1W 3264L TYPE Low Resistance Chip Resistor
1. Scope
This specification applies to 3.2mm x 6.4mm size 1W, fixed metal film chip resistors rectangular
type for use in electronic equipment.
2. Type Designation
RL3264
L - - N
(1)
(2)
(3)
(4) (5)
Where
(1) Series No.
(2) L = L Type
(3) Resistance value :
For example - -
R100 = 100m
2R70 = 2.7
The " R " shall be used as a decimal point.
(4) Resistance tolerance: refer to paragraph 4-1.
(5) N = Sn plating (Lead free ,RoHS compliant)
3. Outline Designation
(1) Substrate
Alumina 96%
(2) Resistor
Ni-alloy
(3) Terminals
Sn (on Cu )
(4) Protection coat
Heat resistive epoxy resin
(5) Marking
Epoxy resin
Dimensions (mm)
Code Letter
3264L
L
6.4
0.20
W
3.2
0.20
a
2.0
0.15
t
0.5
0.15
Figure 1. Construction and Dimensions
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DOCUMENT : RLWL0000N
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4. Ratings
4-1 Specification
Power Ratings *
1.0 W
Resistance Value
0.1
~ 2.7
Resistance Tolerance
1% ( F )
2% ( G )
Note * :
Power ratings is based on continuous full load operation at rated ambient temperature of 70.
For resistors operated at ambient temperature in excess of 70, the maximum load shall be
derated in accordance with the following curve.
Figure 2.Power Temperature Derating Cure
4-2 Maximum over current
[ ]
ms
A
R
P
I
10
=
Where
I : maximum current 45A
P : 64W (100m
~ 470m
)
32W (560m
~ 2.7
)
R : Nominal resistance value (
)
Interval 60 seconds minimum
If maximum current so obtained exceed than 45A , use 45A as maximum current.
4-3 Operation and Storage Temperature Range
-55 to +125
0
70
100
125
-55
AMBIENT TEMPERATURE( )
RATED LOAD(%)
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5. Schematic Diagram. Measurement Point
V
I
R100
Current terminal
Voltage terminal
Measurement Point
Schtemtic Diagram
6. Life test
6-1 Electrical
6-2-1 Short Time Overload
Resistance Change :
( 0.5% + 0.0005
)
Without significant damage by flashover ( spark, arching ), burning or
breakdown etc.
Test voltage : 2.5 times the rated voltage.
Duration : 5 seconds
6-2 Mechanical
6-2-1 Solderability
A new uniform coating of solder shall cover minimum of 90% of the surface
being immersed.
Temperature of solder : 245
5
Immersion duration : 3
0.5 seconds
6-2-2 Resistance to Soldering Heat
Resistance change :
( 0.5% + 0.0005
)
Electrical characteristics shall be satisfied.
Without distinct deformation in appearance
Dipped into solder for 10
1 seconds at 270
5
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DOCUMENT : RLWL0000N
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6-2-3 Substrate bending
Resistance change :
( 0.5% + 0.0005
)
Without mechanical damage such as breaks.
Electrical characteristics shall be satisfied.
Glass-Epoxy bard t = 1.6mm
Bending value : 2mm
Between the fulcrums : 90mm
6-3 Endurance
6-3-1 Rapid change of temperature
Resistance change :
( 0.5% + 0.0005
)
Without distinct damage.
Perform 5 cycles as follows :
-40 for 30minutes room temperature for 3 minutes
+125 for 30minutes room temperature for 3 minutes
6-3-2 Endurance at 70
Resistance change :
( 0.5% + 0.0005
)
Without distinct damage.
Rated voltage for 1.5 hours followed by a pause 0.5 hour at a
temperature of 70
3.
Cycle shall be repeated for 1,000 hours.
6-3-3 Dump heat with load
Resistance change :
( 0.5% + 0.0005
)
The marking shall be legible.
60
2 with relative humidity of 90% to 95%.
D.C. rated voltage for 1.5 hours ON 30 minutes OFF.
Cycle shall be repeated for 1,000 hours.
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7. Packaging
7-1 Dimensions
7-1-1 Tape packaging dimensions
7-1-2 Reel dimensions
80
1
13.5 1
2.0 0.5
13 0.3
18.4 max.
225
1
Unit : mm
3.43 0.2
0.3 max.
Cavity
1.5 max.
6.63 0.2
Feed forward hole
1.75 0.1
2.0 0.05
4.0 0.1
Unit : mm
5.5 0.05
12.0 0.3
4.0 0.1
-0.0
+0.1
1.5
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7-2 Peel Strength of Top Cover Tape
The peel speed shall be about 300mm/minute
The peel force of top cover tape shall between 0.1 to 0.7N
7-3 Number of Taping
5,000 pieces / reel
7-4 Label marking
The following items shall be marked on the reel.
(1) Part number
(2) Quantity per reel
(3) Manufacturing month code
(4) Manufacturer
(5) Inspection number (Lot number)
165 ~ 180
Top Cover Tape
Carrier tape
0.1 ~ 0.7N
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