Lead-Free Current Sensing Resistors
RLM Series
( Halogen-Free )
Document No
TRLM-25OS153B
Issued date
2017/07/04
page
1/6
TA-I TECHNOLOGY CO., LTD
1. Scope：
This specification applied to the products of Lead-Free current sensing resistor of metal foil for Lead-Free
RLM series manufactured by TA-I TECHNOLOGY CO.,LTD.
2. Type Designation：
RLM 25 F E E M R50M
Item Series Resistance Packaging Power Rating Metal Resistance
No. tolerance
25:2512(6432) F:±1% E: Embossed Tape C=1W M=MnCu e.g :
G:±2% E=2W R50m=0.5mΩ
J:±5% G=3W
3. Construction and Dimension ：
3.1 Construction:
3.2 Dimension:
UNIT : mm
Style
L
W
C
t
Material
RLM25
6.4±0.2
3.2±0.2
2.6±0.2
0.6 ±0.20
Metal: Copper-Manganese
Alloy
Over Coating：molding
Compound UL-94V-0 grade
Metal Alloy Plate
Over-Coat
Ni / Sn
Plating
R50m
Lead-Free Current Sensing Resistors
RLM Series
( Halogen-Free )
Document No
TRLM-25OS153B
Issued date
2017/07/04
page
2/6
TA-I TECHNOLOGY CO., LTD
4. Features:
Type
RLM25
Power Rating
1W、2 W、3W
Resistance Value
0.5mΩ~0.75mΩ
Operation Temperature Range
-55℃~+170℃
Temperature Coefficient of Resistance
±200ppm/℃
Tolerance
±1%、±2%、±5%
Insulation Resistance
Over 100MΩ
Maximum Working Voltage(V)
(P*R)
1/2
5. Reliability Tests :
Test Items
Reference
standard
Condition of Test
Test Limits
Temperature Coefficient
of Resistance
IEC60115-1 4.8
JIS C 5201-1 4.8
+25℃ ~ +125℃
Refer 4.0
Load Life
IEC60115-1 4.25.1
JIS C 5201-1 4.25.1
1000hours at rated power,
70℃, 1.5hours “ON”,
0.5hour “OFF”
< ±1%
Short Time Overload
IEC60115-1-4.13
JIS-C5201-4.13
5 X rated power for 5s
< ±0.5%
Moisture no Load
IEC60115-1 4.13
JIS C 5201-1 4.13
85℃, 85%RH, 1000hrs
< ±0.5%
Temperature cycle
IEC60115-1 4.24.2.1a)
JIS C 5201-1 4.24.2.1a)
-55℃ & +155℃, 300cycle,
15min per extreme condition
< ±0.5%
Resistance to Soldering Heat
IEC60115-1 4.19
JIS C 5201-1 4.19
260±5℃ for20±1 sec
< ±0.5%
Solderability
IEC60115-1 4.18
JIS C 5201-1 4.18
245±5℃, 2±0.5sec
At least 95% of surface
area of electrode shall
be covered with new
solder
High Temperature Exposure
IEC60115-1 4.17
JIS C 5201-1 4.17
170℃, 1000hrs
< ±1%
Low Temperature Storage
IEC60115-1 4.23.2
JIS C 5201-1 4.23.2
-55℃, 1000hrs
<±0.5%
Substrate Bending
EC60115-1 4.23.4
JIS C 5201-1 4.23.4
Bending width 2mm
< ±0.5%
Insulation Resistance
IEC60115-1 4.33
JIS C 5201-1 4.33
100V DC for 1 minute
>100 MΩ