150 Cel Fixed Resistors 731

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Part RoHS Manufacturer Resistor Type Mounting Type Resistance Rated Power Dissipation (P) Maximum Operating Temperature Tolerance Diameter (Lead) Spacing (Lead) Rated Temperature No. of Functions Technology Shape (Package) No. of Elements Construction Packing Method Size Code Network Type No. of Terminals Package Style (Meter) Terminal Shape Sub-Category Dimensions First Element Resistance Minimum Operating Temperature Temperature Coef (ppm/Cel) Terminal Finish Length (Lead) Height (Package) Manufacturer Series Operating Voltage Additional Features Length (Package) JESD-609 Code Series Diameter (Package) Reference Standard Width (Package)

M55342E12B18B2RT5

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

18200 ohm

.1 W

150 Cel

.1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

TR

0603

2

SMT

WRAPAROUND

-65 Cel

25

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

NON-INDUCTIVE

1.6256 mm

e0

MIL-PRF-55342

.8128 mm

M55342E12B2B40RWS

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

2400 ohm

.1 W

150 Cel

.1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

Waffle Pack

0603

2

SMT

WRAPAROUND

-65 Cel

25

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

NON-INDUCTIVE

1.6256 mm

e0

MIL-PRF-55342

.8128 mm

M55342E12B49B9RWS

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

49900 ohm

.1 W

150 Cel

.1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

Waffle Pack

0603

2

SMT

WRAPAROUND

-65 Cel

25

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

NON-INDUCTIVE

1.6256 mm

e0

MIL-PRF-55342

.8128 mm

M55342E12B4B32RT5

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

4320 ohm

.1 W

150 Cel

.1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

TR

0603

2

SMT

WRAPAROUND

-65 Cel

25

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

NON-INDUCTIVE

1.6256 mm

e0

MIL-PRF-55342

.8128 mm

M55342E12B4B32RTS

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

4320 ohm

.1 W

150 Cel

.1 %

70 Cel

THIN FILM

Rectangular

TR

0603

2

SMT

WRAPAROUND

-65 Cel

25

TIN LEAD OVER NICKEL

.8382 mm

50 V

NON-INDUCTIVE

1.6256 mm

MIL-PRF-55342

.8128 mm

M55342E12B4B32RWS

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

4320 ohm

.1 W

150 Cel

.1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

Waffle Pack

0603

2

SMT

WRAPAROUND

-65 Cel

25

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

NON-INDUCTIVE

1.6256 mm

e0

MIL-PRF-55342

.8128 mm

M55342E12B511ARWS

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

511 ohm

.1 W

150 Cel

.1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

Waffle Pack

0603

2

SMT

WRAPAROUND

-65 Cel

25

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

NON-INDUCTIVE

1.6256 mm

e0

MIL-PRF-55342

.8128 mm

M55342E12B51B7RT5

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

51700 ohm

.1 W

150 Cel

.1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

TR

0603

2

SMT

WRAPAROUND

-65 Cel

25

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

NON-INDUCTIVE

1.6256 mm

e0

MIL-PRF-55342

.8128 mm

M55342E12B75B9RWS

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

75900 ohm

.1 W

150 Cel

.1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

Waffle Pack

0603

2

SMT

WRAPAROUND

-65 Cel

25

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

NON-INDUCTIVE

1.6256 mm

e0

MIL-PRF-55342

.8128 mm

M55342H12B10E0RT5

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

10000 ohm

.1 W

150 Cel

1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

TR

0603

2

SMT

WRAPAROUND

-65 Cel

50

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

NON-INDUCTIVE

1.6256 mm

e0

MIL-PRF-55342

.8128 mm

M55342H12B18E2PWS

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

18200 ohm

.1 W

150 Cel

1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

Waffle Pack

0603

2

SMT

WRAPAROUND

-65 Cel

50

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

NON-INDUCTIVE

1.6256 mm

e0

MIL-PRF-55342

.8128 mm

M55342H12B1E00RTF

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

1000 ohm

.1 W

150 Cel

1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

TR, EMBOSSED, 7 INCH

0603

2

SMT

WRAPAROUND

-65 Cel

50

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

NON-INDUCTIVE

1.6256 mm

e0

MIL-PRF-55342

.8128 mm

M55342H12B33E2RT0

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

33200 ohm

.1 W

150 Cel

1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

TR

0603

2

SMT

WRAPAROUND

-65 Cel

50

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

NON-INDUCTIVE

1.6256 mm

e0

MIL-PRF-55342

.8128 mm

M55342H12B33E2RT5

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

33200 ohm

.1 W

150 Cel

1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

TR

0603

2

SMT

WRAPAROUND

-65 Cel

50

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

NON-INDUCTIVE

1.6256 mm

e0

MIL-PRF-55342

.8128 mm

M55342H12B33E2RTF

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

33200 ohm

.1 W

150 Cel

1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

TR, EMBOSSED, 7 INCH

0603

2

SMT

WRAPAROUND

-65 Cel

50

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

NON-INDUCTIVE

1.6256 mm

e0

MIL-PRF-55342

.8128 mm

M55342H12B33E2RTS

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

33200 ohm

.1 W

150 Cel

1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

TR

0603

2

SMT

WRAPAROUND

-65 Cel

50

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

NON-INDUCTIVE

1.6256 mm

e0

MIL-PRF-55342

.8128 mm

M55342H12B33E2RWS

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

33200 ohm

.1 W

150 Cel

1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

Waffle Pack

0603

2

SMT

WRAPAROUND

-65 Cel

50

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

NON-INDUCTIVE

1.6256 mm

e0

MIL-PRF-55342

.8128 mm

M55342H12B3E65RT5

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

3650 ohm

.1 W

150 Cel

1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

TR

0603

2

SMT

WRAPAROUND

-65 Cel

50

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

NON-INDUCTIVE

1.6256 mm

e0

MIL-PRF-55342

.8128 mm

M55342H12B52E3PT5

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

52300 ohm

.1 W

150 Cel

1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

TR

0603

2

SMT

WRAPAROUND

-65 Cel

50

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

NON-INDUCTIVE

1.6256 mm

e0

MIL-PRF-55342

.8128 mm

M55342H12B52E3RT5

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

52300 ohm

.1 W

150 Cel

1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

TR

0603

2

SMT

WRAPAROUND

-65 Cel

50

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

NON-INDUCTIVE

1.6256 mm

e0

MIL-PRF-55342

.8128 mm

M55342K12B100DRTFV

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

100 ohm

.1 W

150 Cel

1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

TR

0603

2

SMT

WRAPAROUND

-65 Cel

100

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

1.6256 mm

e0

MIL-PRF-55342

.8128 mm

M55342K12B1B00RTS

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

1000 ohm

.1 W

150 Cel

.1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

TR

0603

2

SMT

WRAPAROUND

-65 Cel

100

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

NON-INDUCTIVE

1.6256 mm

e0

MIL-PRF-55342

.8128 mm

M55342K12B4B99RT0

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

4990 ohm

.1 W

150 Cel

.1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

TR

0603

2

SMT

WRAPAROUND

-65 Cel

100

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

NON-INDUCTIVE

1.6256 mm

e0

MIL-PRF-55342

.8128 mm

M55342K12B4E99RWSV

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

4990 ohm

.1 W

150 Cel

1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

Waffle Pack

0603

2

SMT

WRAPAROUND

-65 Cel

100

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

1.6256 mm

e0

MIL-PRF-55342

.8128 mm

M55342K12B59B0RT5

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

59000 ohm

.1 W

150 Cel

.1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

TR

0603

2

SMT

WRAPAROUND

-65 Cel

100

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

NON-INDUCTIVE

1.6256 mm

e0

MIL-PRF-55342

.8128 mm

M55342K12B59B0RWS

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

59000 ohm

.1 W

150 Cel

.1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

Waffle Pack

0603

2

SMT

WRAPAROUND

-65 Cel

100

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

NON-INDUCTIVE

1.6256 mm

e0

MIL-PRF-55342

.8128 mm

M55342K12B665DRTSV

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

665 ohm

.1 W

150 Cel

1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

TR

0603

2

SMT

WRAPAROUND

-65 Cel

100

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

1.6256 mm

e0

MIL-PRF-55342

.8128 mm

M55342K12B9B88RWS

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

9880 ohm

.1 W

150 Cel

.1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

Waffle Pack

0603

2

SMT

WRAPAROUND

-65 Cel

100

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

NON-INDUCTIVE

1.6256 mm

e0

MIL-PRF-55342

.8128 mm

RW0S6BB10R0FE

Ohmite Manufacturing

FIXED RESISTOR

SURFACE MOUNT

10 ohm

.6 W

150 Cel

1 %

25 Cel

WIRE WOUND

Rectangular

2010

2

SMT

J BEND

-55 Cel

20

3.42 mm

50 V

5.14 mm

2.54 mm

M55342E06B12B7RT0

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

12700 ohm

.15 W

150 Cel

.1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

TR

0705

2

SMT

WRAPAROUND

-65 Cel

25

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

NON-INDUCTIVE

2.032 mm

e0

MIL-PRF-55342

1.27 mm

M55342E12B18B2RT0

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

18200 ohm

.1 W

150 Cel

.1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

TR

0603

2

SMT

WRAPAROUND

-65 Cel

25

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

NON-INDUCTIVE

1.6256 mm

e0

MIL-PRF-55342

.8128 mm

M55342E12B4B32RT0

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

4320 ohm

.1 W

150 Cel

.1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

TR

0603

2

SMT

WRAPAROUND

-65 Cel

25

Tin/Lead (Sn60Pb40) - with Nickel (Ni) barrier

.8382 mm

50 V

NON-INDUCTIVE

1.6256 mm

e0

MIL-PRF-55342

.8128 mm

TK20P10R0JE

Ohmite Manufacturing

FIXED RESISTOR

THROUGH HOLE MOUNT

10 ohm

20 W

150 Cel

5 %

25 Cel

METAL GLAZE/THICK FILM

RECTANGULAR PACKAGE

2

WIRE

Fixed Resistors

200

Tin (Sn)

RATED POWER DISSIPATED USING HEATSINK

e3

AW100KE

Ohmite Manufacturing

FIXED RESISTOR

THROUGH HOLE MOUNT

10 ohm

2.5 W

150 Cel

10 %

17.5 mm

50 Cel

CERAMIC COMPOSITION

Cylinder

2

Radial

WIRE

-55 Cel

MATTE TIN

4.7 mm

NON-INDUCTIVE

20 mm

e3

13 mm

AY330KE

Ohmite Manufacturing

FIXED RESISTOR

THROUGH HOLE MOUNT

33 ohm

4.5 W

150 Cel

10 %

22.5 mm

50 Cel

CERAMIC COMPOSITION

Cylinder

2

Radial

WIRE

-55 Cel

MATTE TIN

4.7 mm

NON-INDUCTIVE

25 mm

e3

21 mm

AY33GKE

Ohmite Manufacturing

FIXED RESISTOR

THROUGH HOLE MOUNT

3.3 ohm

4.5 W

150 Cel

10 %

22.5 mm

50 Cel

CERAMIC COMPOSITION

Cylinder

2

Radial

WIRE

-55 Cel

MATTE TIN

4.7 mm

NON-INDUCTIVE

25 mm

e3

21 mm

AZ102KE

Ohmite Manufacturing

FIXED RESISTOR

THROUGH HOLE MOUNT

1000 ohm

5.5 W

150 Cel

10 %

50 Cel

CERAMIC COMPOSITION

Cylinder

4

Radial

WIRE

-55 Cel

MATTE TIN

16.7 mm

NON-INDUCTIVE

30 mm

e3

26 mm

AZ330KE

Ohmite Manufacturing

FIXED RESISTOR

THROUGH HOLE MOUNT

33 ohm

5.5 W

150 Cel

10 %

50 Cel

CERAMIC COMPOSITION

Cylinder

4

Radial

WIRE

-55 Cel

MATTE TIN

16.7 mm

NON-INDUCTIVE

30 mm

e3

26 mm

TAH20P15R0JE

Ohmite Manufacturing

FIXED RESISTOR

THROUGH HOLE MOUNT

15 ohm

20 W

150 Cel

5 %

5.08 mm

25 Cel

METAL GLAZE/THICK FILM

RECTANGULAR PACKAGE

Encapsulated

4112

2

Radial

FLAT

Fixed Resistors

50

TIN SILVER

12.7 mm

16.26 mm

TAH

350 V

RATED POWER DISSIPATED USING HEATSINK

10.41 mm

e2

TAH20

3.18 mm

TAH20P1K50JE

Ohmite Manufacturing

FIXED RESISTOR

THROUGH HOLE MOUNT

1500 ohm

20 W

150 Cel

5 %

5.08 mm

25 Cel

METAL GLAZE/THICK FILM

RECTANGULAR PACKAGE

Encapsulated

4112

2

Radial

FLAT

Fixed Resistors

50

TIN SILVER

12.7 mm

16.26 mm

TAH

350 V

RATED POWER DISSIPATED USING HEATSINK

10.41 mm

e2

TAH20

3.18 mm

TAH20P220RJE

Ohmite Manufacturing

FIXED RESISTOR

THROUGH HOLE MOUNT

220 ohm

20 W

150 Cel

5 %

5.08 mm

25 Cel

METAL GLAZE/THICK FILM

RECTANGULAR PACKAGE

Encapsulated

4112

2

Radial

FLAT

Fixed Resistors

50

TIN SILVER

12.7 mm

16.26 mm

TAH

350 V

RATED POWER DISSIPATED USING HEATSINK

10.41 mm

e2

TAH20

3.18 mm

TAH20P3R30JE

Ohmite Manufacturing

FIXED RESISTOR

THROUGH HOLE MOUNT

3.3 ohm

20 W

150 Cel

5 %

5.08 mm

25 Cel

METAL GLAZE/THICK FILM

RECTANGULAR PACKAGE

Encapsulated

4112

2

Radial

FLAT

Fixed Resistors

100

TIN SILVER

12.7 mm

16.26 mm

TAH

350 V

RATED POWER DISSIPATED USING HEATSINK

10.41 mm

e2

TAH20

3.18 mm

TAH20PR510JE

Ohmite Manufacturing

FIXED RESISTOR

THROUGH HOLE MOUNT

.51 ohm

20 W

150 Cel

5 %

5.08 mm

25 Cel

METAL GLAZE/THICK FILM

RECTANGULAR PACKAGE

Encapsulated

4112

2

Radial

FLAT

Fixed Resistors

TIN SILVER

12.7 mm

16.26 mm

TAH

350 V

RATED POWER DISSIPATED USING HEATSINK

10.41 mm

e2

TAH20

3.18 mm

TEH70P100RJE

Ohmite Manufacturing

FIXED RESISTOR

THROUGH HOLE MOUNT

100 ohm

70 W

150 Cel

5 %

25 Cel

METAL GLAZE/THICK FILM

RECTANGULAR PACKAGE

Non Inductive

6320

2

PCB Mount

FLAT

Fixed Resistors

50

Tin/Silver (Sn/Ag)

20.32 mm

21.08 mm

500 V

NON INDUCTIVE

15.9 mm

e2

5.08 mm

CS3FR005E

Ohmite Manufacturing

FIXED RESISTOR

THROUGH HOLE MOUNT

.005 ohm

3 W

150 Cel

1 %

70 Cel

WIRE WOUND

RECTANGULAR PACKAGE

Non Inductive

8521

2

PCB Mount

FLAT

Fixed Resistors

-55 Cel

60

Tin/Silver (Sn97Ag3)

8 mm

16.4 mm

CS3

NON-INDUCTIVE, PRECISION

21.7 mm

CS3

5.35 mm

D55342E07B100BRWS

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

100000 ohm

.25 W

150 Cel

.1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

Waffle Pack

1206

2

SMT

WRAPAROUND

-65 Cel

25

Tin/Lead (Sn90Pb10) - with Nickel (Ni) barrier

.8382 mm

100 V

NON-INDUCTIVE

3.2004 mm

e0

MIL-PRF-55342

1.6002 mm

D55342E07B100ERT1

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

100000 ohm

.25 W

150 Cel

1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

TR

1206

2

SMT

WRAPAROUND

-65 Cel

25

Tin/Lead (Sn90Pb10) - with Nickel (Ni) barrier

.8382 mm

100 V

NON-INDUCTIVE

3.2004 mm

e0

MIL-PRF-55342

1.6002 mm

D55342E07B109ART1

Vishay Intertechnology

FIXED RESISTOR

SURFACE MOUNT

109 ohm

.25 W

150 Cel

.1 %

70 Cel

THIN FILM

RECTANGULAR PACKAGE

Rectangular

TR

1206

2

SMT

WRAPAROUND

-65 Cel

25

Tin/Lead (Sn90Pb10) - with Nickel (Ni) barrier

.8382 mm

100 V

NON-INDUCTIVE

3.2004 mm

e0

MIL-PRF-55342

1.6002 mm

Fixed Resistors

Fixed resistors are passive electronic components that are used to resist the flow of electric current in a circuit. They have a fixed value of resistance, meaning their resistance cannot be adjusted once they are manufactured. They are commonly used to set the bias of transistors, control the gain of amplifiers, or limit the current flowing through an LED. Fixed resistors come in various sizes, power ratings, and tolerances.

There are two types of fixed resistors: through-hole and surface mount. Through-hole resistors have leads that are inserted into holes on the printed circuit board (PCB), while surface mount resistors have terminals that are soldered directly to the surface of the PCB. Through-hole resistors are larger and easier to work with, but surface mount resistors are smaller and more suitable for miniaturized electronic devices.

Fixed resistors can be made from a variety of materials, including carbon, metal, and wire-wound. Carbon resistors are inexpensive and widely used, but they have a lower tolerance and are more susceptible to noise than other types. Metal film resistors have a higher tolerance and better stability, making them ideal for use in precision circuits. Wire-wound resistors have a higher power rating and are used in high power applications, such as power supplies and amplifiers.