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AEC-Q200 Current-Sensing Resistors (LREA) Introduction

DeMint Electronics AEC-Q200 current sensing resistor (LREA) offer excellent stability, high power, small size, excellent heat dissipation and high solder-joint reliability which make them excellent for design into Electric Vehicles, Hybrid Electric Vehicles, Automatic and Continuously Variable Transmission systems and other vehicle power applications.

Power metal alloy strip current sense surface-mount resistors (LREA) provide superior performance in high temperature applications with a wide range of package sizes in 1206/2512/2725/4527 and choice of resistance values from 0.25 mΩ to 1Ω. The (LREA) resistors deliver overload capabilities equivalent to wirewound devices with high power handling (Up to 5W) and temperature coefficients as low as ±50 ppm/°C.

AEC-Q200 (LREA) current-sensing chip resistors are qualified for automotive systems to provide engineers additional assurance that they are designing in a robust and reliable component. The device is optimized for electronic controls, including chassis, driver information electronics, engine, and climate controls and ideal for all types of pulse and current sensing applications including linear power supplies and switching, instruments, power amplifiers and shunts.

To maximise energy conversion efficiency and reduce power consumption, current sense resistors ought to be from the lowest ohmic value, the highest pulse and surge possible. DeMint Current-sensing (LREA) resistors allow control circuitry to watch the level of current in a circuit by converting current into a voltage that can be monitored with exceptional efficiency such as typical applications in modern battery-operated equipment.

DeMint Electronics delivers the right chip for your low range, current-sense applications. For standard parts please link to High Power Low Value Current Sensing Chip Resistors (LRE) Metal Strip. For more detailed product information and data sheets or to discuss your specific requirements please contact DeMint Electronics.

Downloads Complete Specification PDF AEC-Q200 Metal Alloy Current-Sensing Chips (LREA).

Features :
  1. Wide range package sizes 1206/2512/2725/4527.
  2. High power rating up to 5 Watts, Low TCR down to ±50 ppm/°C.
  3. Resistance values from 0.25mΩ to 1Ω, Customized resistance available.
  4. AEC-Q200 Compliance, RoHS compliant and Halogen free.
Applications :
  1. Power Management for NB, MB, Monitor.
  2. SWPS DC-DC Converter, Charger, Adaptor, Power Supplies, shunts.
  3. Electric Vehicles, Automatic and Continuously Variable Transmission systems.
  4. Hard Disk Drives: Solid-state hard drives (SSD), Solid-state hybrid drives (SSHD).
Construction :
  1. The resistive layer is covered with a protective coat, and two external end terminations are added.
  2. Internal metal electrodes are added at each end and connected by a resistive paste that is applied to the top surface of the metal alloy.
  3. Wrap-around terminations have an electroplated nickel barrier and pure Tin (lead free) or matte-tin finish, ensuring excellent "leach" resistance properties and solderability.
Metal Alloy Chip (LREA) Construction & Dimensions
AEC-Q200 Chip (LREA) Construction & Dimensions
Metal Alloy AEC-Q200 Chip (LREA) Construction & Dimensions
 1 Solder Plating (Sn)
2 Alloy Plate
3 Barrier Layer (Cu, Ni)
4 Overcoat
Type Power Rating at 70℃ (W) Resistance Range (mΩ) Dimensions (Unit: mm)
L W T D
LREA1206 1 1.0~2.0 3.200±0.254 1.650±0.254 0.670±0.254 0.508±0.254
3.0~100.0 3.200±0.254 1.650±0.254 0.490±0.254 0.508±0.254
LREA2512 2 0.5~1.0 6.350±0.254 3.050±0.254 0.670±0.254 2.200±0.254
1.5 0.560±0.254 2.000±0.254
2.0 1.400±0.254
2.5~100.0 1.100±0.254
101.0~450.0 0.610±0.254 0.850±0.254
3 0.5~1.0 0.670±0.254 2.200±0.254
1.5 2.000±0.254
2.0 1.400±0.254
2.5~50.0 1.100±0.254
51.0~100.0 0.740±0.254 1.100±0.254
LREA2725 4 0.25 6.800±0.254 6.350±0.254 0.820±0.254 2.300±0.254
0.5 0.690±0.254
1 0.690±0.254 1.800±0.254
1.5~3.0 0.610±0.254
LREA4527 3 501.0~680.0 11.300±0.500 6.600±0.500 0.770±0.254 2.000±0.254
681.0m~1.0R 0.690±0.254
5 1.0 0.790±0.254 3.000±0.254
1.5 0.840±0.254 2.000±0.254
2.0~500.0 0.840±0.254
AEC-Q200 Chip Resistors (LREA) Electrical Specifications
Type Max. Rating Power (W) Max. Rating Current (A)* Max. Overload Current (A) Resistance Range (mΩ)* TCR (ppm/°C) Operating Temperature (°C)
D (±0.5%) F (±1%);
G (±2%);
J (±5%)
LREA1206 1 31.62 54.77 7.0~100.0 1.0~100.0 ±50 -55~+170°C
LREA2512 2 63.25 141.42 7.0~450.0 0.5~450.0
3 77.46 134.16 7.0~100.0 0.5~100.0
LREA2725 4 126.49 252.98 -- 0.25~3.0
LREA4527 3 2.45 4.24 501m~1.0R 501m~1.0R
5 70.71 122.47 7.0~500.0 1.0~500.0

  • Note: Rating Current I= √ ( P / R ) or Max. Rating Current whichever is lower.
  • Special tolerance and range of resistance are under requested.
Recommend Land Pattern (LREA)
Type Maximum Power Rating (Watts) Resistance Range (mΩ) Dimensions (Unit: mm)
a b i
LREA1206 1.0 1.0 ~ 100.0 1.60 2.18 0.66
LREA2512 2.0 & 3.0 0.5 ~1.5 3.05 3.68 1.27
2.0 ~ 3.5 2.11 3.68 3.18
3.6 ~ 450.0 1.90 3.68 3.50
LREA2725 4.0 0.25 ~ 0.5 3.18 6.86 1.32
1.0 ~ 3.0 2.34 6.86 3.00
LREA4527 3.0 & 5.0 1.0 ~ 3.0 4.50 8.74 4.50
3.5 ~100.0 3.40 8.74 6.43
101.0m ~ 1R 2.93 8.74 7.63
Reel Specifications (LREA)
Reel Specifications Dimensions
Reel Specifications Dimensions (Unit: mm)
Reel Type / Tape W M A B C D
7” reel for 8 mm embossed (LREA0805 & 1206 series only) 12.00± 0.5 178 ± 1.0 2.0 ± 0.5 13.2 ± 0.5 17.7 ± 0.5 60.0 ± 0.5
7” reel for 12 mm embossed 16.2 ± 0.5 178 ± 1.0 2.5 ± 0.5 13.5 ± 0.5 17.7 ± 0.5 60.0 ± 0.5
7” reel for 24 mm embossed (LREA4527 series only) 24.4 +2/-0 178 ± 1.0 2.0 ± 0.5 13.2 ± 0.5 17.7 ± 0.5 60.0 ± 0.5

Emboss Plastic Tape Specifications (LREA)
(LREA) Emboss Plastic Tape Specifications
Low Ohm Metal Strip (LREA) Emboss Plastic Tape Specifications (Unit: mm)
Type A±0.1 B±0.1 W±0.3 E±0.1 F±0.1 P0±0.1 P1±0.3 P2±0.1 ΦD0±0.05 ΦD1±0.1 T±0.1
LREA1206 2.03 3.55 8.0 1.75 3.5 4.0 4.0 2.0 1.55 1.00 0.70
LREA2512 3.50 6.75 12.0 1.75 5.5 4.0 4.0 2.0 1.55 1.55 0.90
LREA2725 6.81 7.16 12.0 1.75 5.5 4.0 8.0 2.0 1.55 1.55 1.05
LREA4527 7.38 12.0 24.0 1.75 11.5 4.0 12.0 2.0 1.55 1.55 1.05
  1. The cumulative tolerance of 10 sprockets hole pitch is ± 0.2mm.
  2. Carrier camber shall be not more than 1mm per 100mm through a length of 250mm.
  3. A & B measured 0.3mm from the bottom of the packet
  4. T measured at a point on the inside bottom of the packet to the top surface of the carrier.
  5. Pocket position relative to sprocket hole is measured as the true position of the pocket and not the pocket hole.

Packaging Quantity (LREA)
Type Tape Width Diameter Piece/Reel
LREA1206 8 mm/embossed plastic 178 mm/7” 5,000
LREA2512 12 mm/embossed plastic 178 mm/7” 4,000
LREA2725 12 mm/embossed plastic 178 mm/7” 2,000
LREA4527 24 mm/embossed plastic 178 mm/7” 1,000
Derating Curve (LREA)
Derating Curve (LREA)

Soldering Condition (Reflow soldering only) (LREA)
Reflow soldering
Environmental Characteristics (LREA)
Item Requirement Test Method
Temperature Coefficient of Resistance (T.C.R.) As Spec. JIS C 5201-1 4.8 +25/+150°C
Short Time Overload LREA4527: ΔR/R0≤±2.0%
The others: ΔR/R0≤±0.5% 		JIS C 5201-1 4.13 Rating power duration: 5secs.
Type Power Multiple
LREA1206 1.0W 3 times
LREA2512 2.0W 5 times
LREA2512 3.0W 3 times
LREA2725 4.0W 4 times
LREA4527 3.0W, 5.0W 3 times
Solderability 95% Min. coverage JIS-C5201-1 4.17 245±5°C for 3 seconds
Resistance to Soldering Heat ΔR/R0≤± 0.5% JIS-C5201-1 4.18 260±5°C for 10 seconds
Temperature Cycling ΔR/R0≤± 0.5% JIS-C5201-1 4.19 -55°C ~ 150°C, 1000 cycles
High Temperature Exposure (Storage) LREA4527: ΔR/R0≤±2.0% The others: ΔR/R0≤±1.0% JIS-C5201-1 4.23.2 +170°C for 1000 Hrs.
Bias Humidity ΔR/R0≤± 0.5% JIS-C5201-1 4.24 +85°C/85%RH for 1,000Hrs. with 1.5Hrs “ON”, 0.5Hr “OFF”.
Load Life LREA4527: ΔR/R0≤±2.0% The others: ΔR/R0≤±1.0% JIS-C5201-1 4.25 80±2°C, RCWV for 1000 Hrs. with 1.5 Hrs. “ON” and 0.5 Hr. “OFF”
Order Codes (LREA)
LREA 2725 F TR D 4 R010
Part Number
LREA
Dimensions
(L×W) (mm)
1206 3.20×1.65
2512 6.35×3.05
2725 6.80x6.35
4527 11.30x6.60
Resistance
Tolerance (%)
J ±5%
G ±2%
F ±1%
D ±0.5%
Package
TR Taping Reel
TCR (PPM/°C)
D ±50ppm/°C
W ±75ppm/°C
E ±100ppm/°C
K ±150ppm/°C
F ±200ppm/°C
Power Rating (W)
T 1W
S 2W
R 3W
4 4W
5 5W
Resistance (Ω)
Ex:
0m50 0.00050Ω
0m75 0.00075Ω
1m50 0.00150Ω
R002 0.00200Ω
R010 0.01000Ω
R100 0.10000Ω