RALEC
旺詮
1 Scope:
LRE Series Metal Alloy Low-Resistance
Resistor Product Specifications
Document. No
Released Date
Page No.
IE-SP-074
2018/09/14
1
1.1 This specification is applicable to lead free and halogen free of RoHS directive for LRE
series metal alloy low-resistance resistor.
1.2 The product is for general electronic purpose.
2 Explanation Of Part Numbers:
LRE
0603
-
2
F
R005
F
5
Type
Size (inch)
Number of
Terminals
Metal Alloy Low
Resistance
Resistor
0402
0603
0805
1206
2: 2 terminals
Rated
Power
P=1/6W
H=1/5W
G=1/4W
F=1/3W
E=3/4W
C=1/2W
1=1.0W
A=1.5W
Resistance
(4 Digits)
Tolerance
Packaging
EX:
R005
R010
=
5mΩ
= 10mΩ
D=±0.5%
F=± 1.0%
G=± 2.0%
J=± 5.0%
5=5,000pcs
TH=10,000pcs
Written
IE
Checked
Approved
QA
Signing
Remark
IT'S NOT UNDER CONTROL FOR PDF FILE
PLS NOTE THE VERSION STATED..
Issue Dep.DATA
Center.
Series No.
60
Do not copy without permission
RALEC
旺詮
LRE Series Metal Alloy Low-Resistance
Resistor Product Specifications
Document No.
Released Date
Page No.
IE-SP-074
2018/09/14
3
3.1 Power Derating Curve: Operating Temperature Range: - 55 ~+150
℃
For resistors operated in ambient temperatures 70°C, power rating shall be derated in
accordance with the curve below:
100
Rating Power(%)
80
60
40
20
0
-55
80 100 120 140 160
Ambient Temperature(℃)
20
40 60
70
150
3.2 Rating Current:
Rated Current: The resistor shall have a DC continuous working current or a RMS(Root
Mean Square). AC continuous working current at commercial-line frequency and wave form
corresponding to the power rating, as determined from the following:
Remark:
I =
√
P/R
I=Rating Current(A)
P= Rating Power(W)
R=Resistance(Ω)
Remark
IT'S NOT UNDER CONTROL FOR PDF FILE
PLS NOTE THE VERSION STATED..
Issue Dep.DATA
Center.
Series No.
60
Do not copy without permission
RALEC
旺詮
LRE Series Metal Alloy Low-Resistance
Resistor Product Specifications
Document No.
Released Date
Page No.
IE-SP-074
2018/09/14
5
5 Reliability Performance:
5.1 Electrical Performance:
Test Item
Temperature
Coefficient of
Resistance
(TCR)
Conditions of Test
●
TCR (ppm/℃) = --------------------- X 10
6
●
R1: resistance of room temperature
●
R2: resistance of 150 °C
●
T1: Room temperature
●
T2: Temperature at 150 °C
●
Refer to JIS C 5201-1 4.8
Applied Overload for 5 seconds and release the load for
about 30 minutes,
then
measure its resistance variance
rate. (Overload condition refer to below):
Type
Power (W)
# of rated power
0402
1/6 & 1/5& 1/4
4 times
0603
1/3 & 1/2
4 times
0805
1/2 & 3/4
4 times
1206
1/2 & 1.0
4 times
Refer to JIS C 5201-1 4.13
Put the resistor in the fixture, add 100 VDC in + ,-
terminal for 60secs then measured the insulation
resistance between electrodes and insulating enclosure
or between electrodes and base material.
Refer to JIS-C5201-1 4.6
Applied 300VAC for 1 minute, and Limit surge current
50 mA (max.)
Refer to JIS-C5201-1 4.7
Test Limits
Refer to Paragraph 3. general
specifications
(R2-R1)
R1 (T2-T1)
≦
±0.5%
No evidence of mechanical damage
Short Time
Overload
Insulation
Resistance
Dielectric
Withstanding
Voltage
≧
10
8
Ω
No short or burned on the appearance
.
5.2 Mechanical /Constructional Performance:
Test Item
Resistance to
Solder Heat
Conditions of Test
The tested resistor be immersed 25 mm/sec into molten
solder of 260±5
℃
for 10±1secs. Then the resistor is left
in the room for 1 hour, and measured its resistance
variance rate.
Refer to JIS-C5201-1 4.18
Add flux into tested resistors, immersion into solder bath
in temperature 245±5
℃
for 3±0.5secs.
Refer to JIS-C5201-1 4.17
The resistor shall be mounted by its terminal leads to the
supporting terminals on the solid table. The entire
frequency range :from 10 Hz to 55 Hz and return to 10
Hz, shall be transferred in 1 min. Amplitude : 1.5mm
This motion shall be applied for a period of 4 hours in
each 3 mutually perpendicular directions (a total of
12hrs)
Refer to JIS-C5201-1 4.22
The tested resistor be immersed into isopropyl alcohol of
20~25℃ for 60secs, then the resistor is left in the room
for 48 hrs. Refer to JIS-C5201-1 4.29
Test Limits
≦
±0.5%
No evidence of mechanical damage
Solderability
Solder coverage over 95%
≦
±0.5%
No evidence of mechanical damage
Vibration
Resistance to
solvent
≦
±0.5%
No evidence of mechanical damage
Remark
IT'S NOT UNDER CONTROL FOR PDF FILE
PLS NOTE THE VERSION STATED..
Issue Dep.DATA
Center.
Series No.
60
Do not copy without permission
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