Document No CRLM-XXOS088A
Issued date 2008/06/20
Lead-Free Current Sensing Resistors
CRLM Series
page 1/6
CAL-CHIP ELECTRONICS,INC.
1. Scope：
This specification applied to the products of Lead-Free current sensing resistor of metal foil for Lead-Free
Series CRLM.
2. Type Designation：
CRLM
25 F E C M R002
Item Style Resistance Packaging Power Metal Resistance
No. tolerance Rating
25:2512(6432) F:±1% E: Embossed Tape C=1W M=Mn/Cu e.g :
G:±2% E=2W R002=2mΩ
J:±5% R010=10mΩ
3. Construction and Dimension ：
3.1 Construction:
3.2 Dimension:
UNIT : mm
Style L W C t Material
2.0±0.2(R≦2mΩ)
25 = 6.4±0.2 3.2±0.2
0.9±0.2(R>2mΩ)
0.6 ±0.20
Metal：Copper-Manganese Alloy
Over Coating：molding
Compound UL-94 grade
Metal Alloy Plate
Over-Coat
Ni / Sn
Plating
Document No CRLM-XXOS088A
Issued date 2008/06/20
Lead-Free Current Sensing Resistors
CRLM Series
page 2/6
CAL-CHIP ELECTRONICS, INC.
4. Features:
Type CRLM
Power Rating 1&2 W (1W:R=1~40 mΩ)
(2W:R≦10mΩ)
Resistance Value 1 ~40mΩ
Operation Temperature Range -55℃~+170℃
275ppm/℃R≦2mΩ
100ppm/℃2mΩ<R≦10mΩ
Temperature Coefficient of Resistance 75ppm/℃ R>10mΩ
Tolerance ±1%,±2%,±5%
Insulation Resistance Over 100MΩ
Maximum Working Voltage(V) (P*R)1/2
5. Reliability Tests :
Test Items Condition of Test Test Limits
Temperature Coefficient of
Resistance +25℃ ~ +125℃ Refer 4.0
Load Life 1000hours at rated power, 70℃, 1.5hours
“ON”, 0.5hour “OFF” < ±1%
Short Time Overload 5 X rated power for 5s < ±0.5%
Moisture no Load 85℃, 85%RH, 1000hrs < ±0.5%
Temperature cycle -40℃ & +125℃, 1000cycle, 15min per
extreme condition < ±0.5%
Resistance to Soldering Heat 260±5℃ for20±1 sec < ±0.5%
Solderability 245±5℃, 2±0.5sec
A
t least 95% of surface area
of electrode shall be
covered with new solder
High Temperature Exposure 170℃, 1000hrs < ±0.5%
Low Temperature Storage -55℃, 1000hrs <±0.5%
Substrate Bending Bending width 2mm, Epoxy thickness
1.6mm, Fulcrums distance 90mm < ±0.5%
Insulation Resistance 100V DC for 1 minute >100 MΩ
Document No CRLM-XXOS088A
Issued date 2008/06/20
Lead-Free Current Sensing Resistors
CRLM Series
page 3/6
CAL-CHIP ELECTRONICS, INC.
5.1Derating Curve
-55 70 170
Ambient Temperature (℃)
5.2 Rated Voltage
The rated voltage is calculated by the following fomula:
V=√ P*R
6. Recommanded Solder Pad Dimension
Resistance Range
(Ω) a b L
0.001-0.002 4.0 3.1 1.3
0.003-0.050 4.0 2.1 4.1
Unit:mm
Power Ratio (%)
100
V:Rated Voltage(V)
P:Rated Power(W)
R:Resistance Value(Ω)
a
L
Cu Trace
b
Sensing Trace
Document No CRLM-XXOS088A
Issued date 2008/06/20
Lead-Free Current Sensing Resistors
CRLM Series
page 4/6
CAL-CHIP ELECTRONICS, INC.
7. Number of Package:
4000 Pieces / package
8. Label: Date Code Series Resistance Lead-Free Product
LOT NO:
9. Taping
Packing Type A B W F E P1 P
2 P
0 D
0 T
Emboss CRLM 3.6±0.2 6.9±0.2 12.±0.2 5.5±0.05 1.75±0.1 4.0±0.1 2.0±0.05 4.0±0.05 ψ1.5
(+0.1/-0) 0.85±0.15
QTY: 4000 PCS LEAD-FREE
R005 FEC
3089166 0308 2512
Customer Label Tolerance Package Power Rating
Document No CRLM-XXOS088A
Issued date 2008/06/20
Lead-Free Current Sensing Resistors
CRLM Series
page 5/6
CAL-CHIP ELECTRONICS, INC.
10. Reel Specification
Series ψA ψB ψC W T
RLM 25
+0
180
-3
60 min 13.0±1.0 13.0±1.0 15.4±2.0
11. Peeling Strength of Top Cover Tape
Test Condition: 0.1 to 0.7 N at a peel-off speed of 300 mm / min.
pull
top cover tape 300 mm/min
10 ~15∘ standard: 0.1 ~ 0.7 N
carrier tape
12. Storage Conditions:
Temperature: 5℃~35℃,Humidity:40%~75%
13. Shelf Life:
2 years from manufacturing date.
Document No CRLM-XXOS088A
Issued date 2008/06/20
Lead-Free Current Sensing Resistors
CRLM Series
page 6/6
CAL-CHIP ELECTRONICS, INC.
14. Recommend IR – Reflow profile : (solder : Sn96.5 / Ag3 / Cu0.5)
Peak : 250
0
5
−
+℃ , 5 sec
Pre – heat Zone : 150 to 180 ℃, 90±30 sec
Soldering Zone : 230℃ or higher , 30±10 sec
