CYNTEC CO., LTD.
乾坤科技股½有限公司
DOCUMENT
REVISION
PAGE
: SR990000NH
: A0
: 1 OF 7
2W, 2512, L Type Low Resistance Chip Resistor (Lead free / Halogen Free)
1. Scope
This specification applies to 3.2mm x 6.4mm size 2W, fixed metal foil current sensing resistors used
in electronic equipment.
2. Type Designation
RL–3264 – 9 –
□□□□
–
□
NH
(1)
(2)
(3)
(4)
Where
(1) Series No.
(2) Resistance value :
For example :
Four digits of number
R002 = 2mΩ
3R25m = 3.25mΩ
(3) Tolerance :
Refer to paragraph 4-1
(4) NH = Sn plating ( Lead free / Halogen free)
3. Dimensions and schematic
L
R002
a
a
W
Code
Letter
L
Dimensions (mm)
3264
6.35
±
0.25
3.20
±
0.20
(1mΩ)
(2mΩ)
(3.25mΩ)
(1mΩ)
(2mΩ)
(3.25mΩ)
2.50
±
0.15
1.90
±
0.15
2.0
±
0.15
0.70
±
0.15
0.65
±
0.15
0.50
±
0.15
t
W
a
t
Figure 1. Construction and Dimensions
CYNTEC CO., LTD.
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4. Specification:
Characteristics
Power Ratings*
Resistance Value
Temperature Coefficient of Resistance
Operation Temperature Range
Resistance Tolerance
Insulation Resistance
Maximum Working Voltage (V)
DOCUMENT
REVISION
PAGE
: SR990000NH
: A0
: 2 OF 7
Feature
2W
1~2mΩ,3.25mΩ
(1mΩ)
±
200ppm/℃
(2mΩ)
±
100ppm/℃
(3.25mΩ)
±
50ppm/℃
-55℃ ~ +170℃
±
1%(F) ,
±
2%(G) ,
±
5%(J)
Over 100MΩ
( P*R)
1/2
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.
RATED LOAD(%)
100
0
-55
70
170
AMBIENT TEMPERATURE(
Figure 2.：Power Temperature Derating Curve
℃
)
CYNTEC CO., LTD.
乾坤科技股½有限公司
5. Reliability Performance
Test Item
Short Time Overload
Condition of Test
2.5 x Rated power for 5 seconds
Refer to JIS C 5201-1 4.13
DOCUMENT
REVISION
PAGE
: SR990000NH
: A0
: 3 OF 7
Requirements
∆R
:
±
(0.5%+0.0005Ω)
Without significant damage
by flashover ( spark,
arching ), burning or
breakdown etc.
Thermal Shock
-55 ~150℃ 1,000 cycles, 15 min at each
∆R：±
(0.5% + 0.0005Ω)
extreme condition
Without distinct damage in
appearance
Refer to JIS C 5201-1 4.19
Kept at -55℃, 1,000 hours
Refer to JIS C 5201-1 4.23.4
∆R：±
(0.5% + 0.0005Ω)
Without distinct damage in
appearance
∆R：±
(0.5% + 0.0005Ω)
Without distinct damage in
appearance
Low Temperature Storage
Resistance to Soldering Heat Dipped into solder at 270
±
5℃ for 20
±
1 seconds
Refer to JIS C 5201-1 4.18
Load Life
Rated voltage for 1.5hours followed by a
∆R：±
(1.0% + 0.0005Ω)
pause 0.5hour at 70
±
3℃
Without distinct damage in
Cycle repeated 1,000 hours
appearance
Refer to JIS C 5201-1 4.25
∆R：±
(0.5% + 0.0005Ω)
Without distinct damage in
appearance
Damp Heat with Load
40
±
2℃ with relative humidity 90% to
95%.
D.C. rated voltage for 1.5 hours ON 30
minutes OFF.
Cycle repeated 1,000 hours
Refer to JIS C 5201-1 4.24
High Temperature Exposure Kept at 170℃ for 1,000 hours
Refer to JIS C 5201-1 4.23.2
Solderability
Temperature of Solder : 245
±
5℃
Immersion Duration : 3
±
0.5 second
Refer to JIS C 5201-1 4.17
∆R：±
(1.0% + 0.0005Ω)
Without distinct damage in
appearance
Uniform coating of solder
cover minimum of 95%
surface being immersed
CYNTEC CO., LTD.
乾坤科技股½有限公司
Test Item
Mechanical Shock
Condition of Test
100 G’s for 6milliseconds. 5 pulses
Refer to JIS C 5201-1 4.21
Glass-Epoxy board thickness : 1.6mm
Bending width : 2mm
Between the fulcrums : 90mm
Refer to JIS C 5201-1 4.33
DOCUMENT
REVISION
PAGE
: SR990000NH
: A0
: 4 OF 7
Requirements
∆R：±
(0.5% + 0.0005Ω)
Without mechanical damage
such as break
∆R：±
(0.5% + 0.0005Ω)
Without mechanical damage
such as break
Substrate Bending
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