CURRENT SENSING RESISTORS

Low Resistance Chip Current Sensing Resistors

LRC

The performance characteristics of Tokenchina's Current Sense Resistors make them ideal for the automotive industry, consumer devices, industrial networking systems and their prospective power supplies. Whatever the current sense requirement, Tokenchina has a solution to fit any need.

current sense, Shunt Resistors, Open Air

Features

  • Resistance Values from 0.5m ohms to 15m ohms
  • Wide Range Package Sizes 1206/2010/2512
  • Customized Resistance Available
  • High Wattage Rating Up to 3W
  • Low TCR Down to ±50PPM/°C
  • RoHS compliant

Applications

  • Monitor (For power management)
  • Notebook (For power management)
  • Motherboard (For power management)
  • Switch Power Suppiler (DC-DC converter, Charger, Adaptor)

Dimensions (Unit: mm) - Chip Current Sensing LRC

chip current sensing resistor dimensions
Type Resistance (mΩ) L (mm) W (mm) T (mm) D (mm)
LRC12*T*0M50G 0.50 6.35±0.25 3.00±0.20 0.60±0.20 2.68±0.25
LRC12*T*0M75G 0.75 6.35±0.25 3.00±0.20 0.60±0.20 2.48±0.25
LRC12*T*R001G 1.0 6.35±0.25 3.00±0.20 0.60±0.20 1.93±0.25
LRC12*T*1M50G 1.5 6.35±0.25 3.00±0.20 0.60±0.20 1.43±0.25
LRC12*T***G 2.0~3.0 6.35±0.25 3.00±0.20 0.60±0.20 1.18±0.25
LRC12*T*R004G 4.00 6.35±0.25 3.00±0.20 0.60±0.20 2.18±0.25
LRC12*T***G 5.0~6.0 6.35±0.25 3.00±0.20 0.60±0.20 1.93±0.25
LRC12*T*R007G 7.00 6.35±0.25 3.00±0.20 0.60±0.20 1.43±0.25
LRC12*T***G 8.0~15 6.35±0.25 3.00±0.20 0.60±0.20 1.18±0.25
LRC12*T*0M50 0.50 6.35±0.25 3.18±0.25 1.40±0.20 1.43±0.38
LRC12*T*0M75 0.75 6.35±0.25 3.18±0.25 1.00±0.20 1.43±0.38
LRC12*T*R001 1.00 6.35±0.25 3.18±0.25 0.80±0.20 1.43±0.38
LRC12*T*1M50 1.50 6.35±0.25 3.18±0.25 0.65±0.20 1.43±0.38
LRC12*T*R002 2.00 6.35±0.25 3.18±0.25 0.50±0.20 1.43±0.38
LRC12*T*2M50 2.50 6.35±0.25 3.18±0.25 1.00±0.20 1.43±0.38
LRC12*T*R003 3.00 6.35±0.25 3.18±0.25 0.70±0.20 1.43±0.38
LRC12*T*R004 4.00 6.35±0.25 3.18±0.25 0.60±0.20 1.43±0.38
LRC12*T*R005 5.00 6.35±0.25 3.18±0.25 0.50±0.20 1.43±0.38
LRC12*T*R006 6.00 6.35±0.25 3.18±0.25 0.50±0.20 1.43±0.38
LRC12*T*6M50 6.50 6.35±0.25 3.18±0.25 0.45±0.20 1.43±0.38
LRC12*T*R007 7.00 6.35±0.25 3.18±0.25 0.45±0.20 1.43±0.38
LRC10*T*** 1.0~10 5.08±0.25 2.54±0.15 0.60±0.20 1.67±0.63
LRC06*T*** 1.0~10 3.20±0.25 1.60±0.10 0.60±0.20 0.98±0.38
  • Customer's specification, custom design, or ODM are welcomed on request.

Specifications - Current Detection LRC

Type Power Rating at 80°C Operating Temp. Range ResistanceTolerance (±%) Resistance (mΩ) TCR (±PPM/°C)
LRC12*TK** 1W -55°C ~ +170°C 1, 3, 5 2.5~3.5 150
LRC12*TE** 1W 4.0~5.5 100
LRC12*TW** 1W 6.0~7.0 75
LRC12*TD**G 1W 11.0~15.0 50
LRC12*TD** 1W 0.5~2.0 50
LRC06*TD** 1W 1.0~10.0 50
Remark: Operating Current I = √ ( P / R ) , Operating Voltage V = √ ( P * R )

High Power Rating Specifications - Chip Current Sense LRC

Type Power Rating at 80°C Operating Temp. Range ResistanceTolerance (±%) Resistance (mΩ) TCR (±PPM/°C)
LRC12*TDS* 2.0W -55°C ~ +170°C 1, 3, 5 0.5~2.0 50
LRC12*TDS*G 2.0W 3.5 50
LRC12*TDS*G 2.0W 6.5~10.0 50
LRC12*TDB*G 2.5W 4.0~6.0 50
LRC12*TDR*G 3.0W 1.0~3.0 50
LRC12*TER*G 3.0W 0.5~0.75 100
LRC10*TDA* 1.5W 1.0~10.0 50
Remark: Operating Current I = √ ( P / R ) , Operating Voltage V = √ ( P * R )
Derating Curve
Low Ohmic Current Sensing Resistor

Characteristics - Chip Low Resistance LRC

Item Specification Test Method
Black Coating Green Coating
Thermal Shock
±0.5%
±1%
 -55°C~150°C, 100 cycles
MIL-STD-202 Method 107G
Short Time Overload
±0.5%
±1%
 5*Rated Power for 5 seconds
JIS-C-5202-5.5
Endurance
±1%
±1%
 70±2°C, Max. working voltage for 1000 hrs with 1.5 hrs "ON" and 0.5 hrs "OFF"
Dry Heat
±1%
±1%
 at +170°C for 1000 hrs
Resistance to Soldering Heat
±0.5%
±1%
 260±5°C, for 10 seconds
MIL-STD-202F Method 210E
Solderability
95% min coverage
 245±5°C for 3 seconds
MIL-STD-202F Method 210E
Temperature Coefficient of Resistance
As Spec.
 +25/-55/+25/+125/+25°C
MIL-STD-202 Method 304
  • Green coating can’t be work with wave soldering bath.
  • Humidity < 80%RH; Storage Temperature: 25±3°C

Packaging Quantity (Unit: pcs) - Chip Current Sense LRC

Type Emboss Plastic Tape
LRC12 2,000
LRC10 2,000
LRC06 2,000

Emboss Plastic Tape Packaging Specifications (Unit: mm) - LRC

Chip Current Sensing Resistor, Chip Low Ohmic Resistor, Open Air Resistor
Size Resistance
(mΩ)		 A B W E F P0 P1 P2 ΦD0 ΦD1 T
LRC12 0.50~7 3.40±0.1 6.73±0.1 12.0±0.1 1.75±0.1 5.5±0.05 4.0±0.1 4.00±0.1 2.0±0.05 1.50±0.10 1.4min 0.81±0.1
0.50~15 3.40±0.1 6.75±0.1 12.0±0.1 1.75±0.1 5.5±0.05 4.0±0.1 4.00±0.1 2.0±0.05 1.55±0.05 1.4min 0.80±0.1
LRC10 1~10 2.85±0.1 5.55±0.1 12.0±0.2 1.75±0.1 5.5±0.05 4.0±0.1 4.00±0.1 2.0±0.05 1.55±0.05 1.4min 0.85±0.1
LRC06 1~10 1.90±0.1 3.60±0.1 8.0±0.2 1.75±0.1 3.5±0.05 4.0±0.1 4.00±0.1 2.0±0.05 1.55±0.05 1.0min 0.87±0.1
  • Pocket position relative to sprocket hole is measured as the true position of the pocket and not the pocket hole.
  • T measured at a point on the inside bottom of the packet to the top surface of the carrier.
  • Carrier camber shall be not more than 1mm per 100mm through a length of 250mm.
  • The cumulative tolerance of 10 sprocket hole pitch is ±0.2mm.
  • A & B measured 0.3mm from the bottom of the packet.

How to Order - Chip Current Sensing LRC

LRC 12 J TR D S R002  
Product Type
Dimensions (L×W)
12 6.3×3.1mm EIA2512
10 5.1×2.5mm EIA2010
06 3.2×1.6mm EIA1206
Resistance Tolerance
J ±5%
H ±3%
F ±1%
Packaging
TR Taping Reel
TCR
D ±50PPM/°C
W ±75PPM/°C
E ±100PPM/°C
K ±150PPM/°C
Power Rating
  Standard
A 1.5W
S 2W
B 2.5W
R 3W
Resistance
0m50 0.00050Ω
0m75 0.00075Ω
1m50 0.00150Ω
R002 0.00200Ω
R020 0.02000Ω
Protective Coating
  Black Coating
G Green Coating
**2010/1206 No coating / marking

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LRC Series - Low Resistance, Chip Current Sensing Resistors