Low Resistance Metal

Element Resistors

LOB Series

Ultra low resistance values

(0.005Ω to 0.1Ω)

Available in 1, 3 and 5

rated packages

Tolerances from ±1% to ±5%

Inherently

(≤.02μH at 0.5MHz)

Low temperature

of resistance

High stability over life

* Power Dissipation - The maximum wattage rating depends upon the amount of heat which can be transferred to the surroundings while not exceeding the maximum element

temperature. Ambient air temperature, velocity of cooling air, thermal resistance of heat and the temperature of surrounding objects will affect this transfer, this must be taken

into account when selecting a resistor.

Low Resistance Metal

Element Resistor s

LOB Serie s

(0.005

Ω to 0.1Ω)

Dimensions (mm)

Type

L max.

D max.

f min.

d nom.

C

LOB-1

9.9±0.3

3.6±0.2

38.1±3.2 0.813±0.05

33.27

LOB-3 14.22±0.25 5.33±0.25 34.93±3.18 0.81±0.05

33.27

LOB-5 23.37±0.25 8.38±0.25 31.75±3.18 1.02±0.05

42.42

General Note

Welwyn Components reserves the right to make changes in product specification without notice or liability.

All information is subject to Welwyn’s own data and is considered accurate at time of going to print.

Telephone: +44 (0) 1670 822181

· Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com

LOB-1

LOB-3

LOB-5

Continuous power dissipation at 25°C in free air

watts

1

3

5

5

2

5

1

5

s

t

t

a

w

s

d

n

o

c

e

s

5

r

o

f

r

e

w

o

p

d

a

o

lr

e

v

O

s

tl

o

v

e

g

a

tl

o

v

g

n

i

k

r

o

w

m

u

m

i

x

a

M

√1xR

√3xR

√5xR

-55 to 175

-55 to 175

-55 to 175

C

°

Operating temperature

Electrical Data

Physical Data

Issue B

· 03.02

A subsidiary of

TT electronics plc

Welwyn Components

104

L

C

D

f

d

contact point

contact point

Description

LOB

Ω Series power precision metal element resistors feature

resistance values down to 0.005

Ω with virtually no

inductance. Available in 1, 3 and 5 watt rated axial leaded

packages, these resistors are compatible with automatic

insertion equipment.

Applications

Construction

LOB

Ω Series resistors feature tinned copper leads welded

directly to a low temperature coefficient resistance element in

a highly automated proprietary process. The leaded resistor

elements are then encapsulated in a moulding compound.

Resistors

All Pb-free parts comply with EU

2011/65/EU (RoHS2)

Low Resistance Metal

Element Resistors

LOB Series

www.bitechnologies.com www.irctt.com www.welwyn-tt.com

General Note

TT electronics reserves the right to make changes in product speci

fication without notice or liability.

All information is subject to TT electronics’ own data and is considered accurate at time of going to print.

© TT electronics plc

11. 11

(0.005 to 0.1 )

*Power Dissipation - The maximum wattage rating depends upon the amount of heat which can be transferred to the surroundings w

hile not exceeding the maximum element

temperature. Ambient air temperature, velocity of cooling air, thermal resistance of heat and the temperature of surrounding ob

jects will a

this transfer, this must be taken

into account when selecting a resistor.

Low Resi stance Metal

Element Resi stors

LOB S eries

(0.005

Ω to0.1 Ω)

ofresistance

Dimensions(mm)

Type

L max.

D max.

f min.

d nom.

C

LOB-1

9.9±0.3

3.6±0.2

38.1±3.2 0.813±0.05

33.27

LOB-3 14.22±0.25 5.33±0.25 34.93±3.18 0.81±0.05

33.27

LOB-5 23.37±0.25 8.38±0.25 31.75±3.18 1.02±0.05

42.42

GeneralNote

Welwyn Components reserves the right to make changes in product

without notice or liability.

All information is subject to Welwyn’s own data and is considered accurate at time of going to print.

© WelwynComponentsLimited

· Bedlington, Northumberland NE22 7AA,UK

Telephone: +44 (0) 1670822181

· Facsimile: +44 (0) 1670829465· Email: info@welwyn-tt.com· Website: www.welwyn-tt.com

LOB-1

LOB-3

LOB-5

Continuous power dissipation at 25°Cin free air

watts

1

3

5

Overload power for 5 seconds

watts

5

15

25

Maximum working voltage

volts

√1xR

√3xR

√5xR

Maximum storage temperature

°C

175

175

175

Electrical Data

Phys ical Data

Issue B

· 03.02

A subsidiary of

TT electronics plc

Welwyn Components

104

L

C

D

f

d

contact point

contact point

Description

LOB

Ω Series power precision metal element resistors feature

resistance values down to 0.005

Ω with virtually no

inductance. Available in 1, 3 and 5 watt rated axial leaded

packages, these resistors are compatible with automatic

insertion equipment.

Applications

Construction

LOB

Ω Series resistors feature tinned copper leads welded

directly to a low temperature coe

resistance element in

a highly automated proprietary process. The leaded resistor

elements are then encapsulated in a moulding compound.

*Power Dissipation - The maximum wattage rating depends upon the amount of heat which can be transferred to the surroundings while not exceeding the maximum element

temperature. Ambient air temperature, velocity of cooling air, thermal resistance of heat and the temperature of surrounding objects will a

this transfer, this must be taken

into account when selecting a resistor.

Low R esistance Metal

Element R esistors

LOB S eries

(0.005

Ω to0.1 Ω)

ofresistance

Dimensions (mm)

Type

LOB-1

9.9±0.3

L

D

f

d

C nom

33.27

0.813±0.05

38.1±3.2

3.6±0.2

LOB-3 14.22±0.25 5.33±0.25 34.93±3.18

33.27

0.81±0.05

LOB-5 23.37±0.25

42.42

1.02±0.05

31.75±3.18

8.38±0.25

GeneralNote

Welwyn Components reserves the right to make changes in product

without notice or liability.

All information is subject to Welwyn’s own data and is considered accurate at time of going to print.

© WelwynComponentsLimited

· Bedlington, Northumberland NE22 7AA,UK

Telephone: +44 (0) 1670822181

· Facsimile: +44 (0) 1670829465· Email: info@welwyn-tt.com· Website: www.welwyn-tt.com

LOB-1

LOB-3

LOB-5

Continuous power dissipation at 25°Cin free air

watts

1

3

5

Overload power for 5 seconds

watts

5

15

25

Maximum working voltage

volts

√1xR

√3xR

√5xR

°C

Electrical Data

Physical Data

Issue B

· 03.02

A subsidiary of

TT electronics plc

Welwyn Components

104

L

C

D

f

d

contact point

contact point

Description

LOB Series power precision metal element resistors feature

resistance values down to 0.005

Ω with virtually no

inductance. Available in 1, 3 and 5 watt rated axial leaded

packages, these resistors are compatible with automatic

insertion equipment.

Applications

Construction

LOB Series resistors feature tinned copper leads welded

directly to a low temperature coe

resistance element in

a highly automated proprietary process. The leaded resistor

elements are then encapsulated in a moulding compound.

-55 to 175

Operating temperature

08.16

General Note

All information is subject to TT Electronics’ own data and is considered accurate at time of going to print.

© TT Electronics plc

www.ttelectronicsresistors.com

BI Technologies IRC Welwyn