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PDFs and Datasheets L4T Datasheet

L4T Datasheet

Four Terminal High Precision Current Sense Resistor

L4T product image

 

Available in two sizes ARCOL’s. Four Terminal High Precision Current Sense Resistor offers High Power in a small package utilising advanced thick film technology.

Applications

  • Power Management Applications
  • Switching Power Supply
  • Over current Protection
  • Portable Devices

Characteristics

Requirement:

As Spec

Test Method:

+25/-55/+25/+125/25°C

Requirement:

±(0.5%+0.0005Ω)

Test Method:

RCWV*2.5 or Max. Overload voltage whichever is lower for 5 seconds

Requirement:

>1000MΩ

Test Method:

Apply 100Vdc for 1 minute

Requirement:

±(0.5%+0.0005Ω)

Test Method:

70±2°,RCWV for 1000hrs with 1.5 hrs ON and 0.5hrs OFF

Requirement:

±(0.5%+0.0005Ω)

Test Method:

40±2°,90~95% R.H. RCWV for 1000 hrs with 1.5 hrs ON and 0.5 hrs OFF

Requirement:

±(0.5%+0.0005Ω)

Test Method:

Bending amplitude 3mm for 10 seconds

Requirement:

-

Test Method:

245±5°C for 3 seconds

Requirement:

-

Test Method:

Apply Max. Overload Voltage for 1 minute

Requirement:

±(0.5%+0.0005Ω)

Test Method:

260±5°C for 10seconds

Requirement:

±(0.5%+0.0005Ω)

Test Method:

-55°C ~ 155°C, 5 cycles

 

RCWV(Rated continuous working voltage)= √(P*R)or Max. Operating voltage whichever is lower.

  • Reference Standards: MIL-STD-202, JIS-C 5201
  • Storage Temperature: 15 ~ 28°C; Humidity <80% RH

 

Schematic Diagram

V = Voltage Terminal
I = Current Terminal 

L4T schematic diagram

 

Construction

L4T Construction graph
L4T Construction graph
L4T Construction graph

1: Alumina Substrate 

2: Resistor Layer

3: Electrode

4: Protection Coat

5: Barrier Layer

Dimensions

Size (Inch)

1206

L

3.0±0.2

W

1,6±0.2

T

0.5±0.15

a

1.0±0.2

b

0.55±0.2

Weight (g) (1000 pcs)

10

Size (Inch)

2010

L

5.0±0.2

W

2.5±0.2

T

0.5±0.15

a

1.7±0.2

b

0.9±0.2

Weight (g) (1000 pcs)

29

Power Rating at 70°C

1/2W

Operating Temp Range

-55 ~ + 155°C

Resistance Range (mΩ) ±0.5%

10 - 20

Resistance Range (mΩ) ±1%

10 - 20

Resistance Range (mΩ) ±2%

10 - 20

Resistance Range (mΩ) ±5%

10 - 20

TCR(PPM/°C)

±50 (E)

±75 (F)

Power Rating at 70°C

3/4W

Operating Temp Range

-55 ~ + 155°C

Resistance Range (mΩ) ±0.5%

10 - 20

Resistance Range (mΩ) ±1%

10 - 20

Resistance Range (mΩ) ±2%

10 - 20

Resistance Range (mΩ) ±5%

10 - 20

TCR(PPM/°C)

±50 (E)

±75 (F)

 

Operating Voltage =√(P*R) or Max operating voltage listed above, whichever is lower.
Overload Voltage= 2.5√(P*R) or Max overload voltage listed above, whichever is lower. 

 

Reflow Soldering Profile

IR Reflow Soldering
Time of IR reflow soldering at maximum temperature point 260°C:10s

L4T Reflow Soldering Chart

 

Packing Quantity & Reel Specifications (mm)

øA

178.0±1.0

øB

60.0+1.0

øC

13.5±0.7

W

9.5 ±1.0

T

11.5±1.0

Paper Tape (EA)

5,000

Emboss Plastic Tape (EA)

-

øA

178.0±1.0

øB

60.0+1.0

øC

13.5±0.7

W

13.5 ±1.0

T

15.5±1.0

Paper Tape (EA)

-

Emboss Plastic Tape (EA)

4,000

L4T Packing Quantity & Reel Specifications

 

Paper Tape Specifications (mm)

L4T Paper Tape Specifications(mm)

 

 

A

2.00±0.05

B

3.55±0.05

W

8.00±0.10

E

1.75±0.05

F

3.5±0.05

P0

4.00±0.10

P1

4.00±0.10

P2

2.00±0.05

øD0

1.55±0.05

T

0.75±0.05

  • Peel force of top cover tape
  • The peel speed shall be about 300mm/min±5%
  • The peel force of top cover tape shall be between 8gf to 80gf
L4T Top Cover Tape graph

 

Emboss Plastic Tape Specifications (mm)

L4T Emboss Plastic Tape Specifications graph

 

 

A

2.85±0.10

B

5.45±0.10

W

12.0±0.10

E

1.75±0.05

F

5.5±0.05

P0

4.00±0.05

P1

4.00±0.10

P2

2.00±0.05

øD0

1.50±0.10

T

1.00±0.20

  • Peel force of top cover tape
  • The peel speed shall be about 300mm/min±5%
  • The peel force of top cover tape shall be between 20gf to 80gf
L4T Top Cover Tape graph

 

Recommended Pad layout (mm)

L

1.75

W

1.10

A

1.00

B

0.30

L

2.55

W

1.55

A

1.40

B

0.50

L4T Recommended Pad layout graph

Ordering Information

 

Standard Resistor: Series(L4T12/L4T20), TCR (50PPM (E), 75PPM (F)), Resistance Value(10mΩ-20mΩ), Tolerance, RoHs (E), Tape(R) 

 

Standard Part Numbers

1%

L4T12FR010FER 
L4T12FR015FER 
L4T12FR020FER 
L4T20FR010FER 
L4T20FR015FER 
L4T20FR020FER 

0.5%

L4T12FR010DER
L4T12FR015DER
L4T12FR020DER
L4T20FR010DER
L4T20FR015DER
L4T20FR020DER

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