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Resistors-Through Hole

Image Part Number Description / PDF Quantity Rfq
CW02B2K700JE70HS

CW02B2K700JE70HS

Vishay / Dale

RES 2.7K OHM 3.75W 5% AXIAL

0
TEH100M2R50JE

TEH100M2R50JE

Ohmite

RES 2.5 OHM 5% 100W TO247-2

1
HWCC112

HWCC112

NTE Electronics, Inc.

RES1/2W 120 OHM 5%

1021
H4909RBYA

H4909RBYA

TE Connectivity AMP Connectors

RES 909 OHM 1/2W 0.1% AXIAL

0
RCME0214000DYS03

RCME0214000DYS03

Vishay / Sfernice

SFERNICE FIXED RESISTORS

0
Y0007119R397V9L

Y0007119R397V9L

VPG Foil

RES 119.397 OHM 0.6W 0.005% RAD

0
RWR81N2870FRRSL

RWR81N2870FRRSL

Vishay / Dale

RES 287 OHM 1W 1% WW AXIAL

0
RN55C1151DB14

RN55C1151DB14

Vishay / Dale

RES 1.15K OHM 1/8W .5% AXIAL

0
ERG-2SJ433

ERG-2SJ433

Panasonic

RES 43K OHM 2W 5% AXIAL

0
CFS1/4CT52R181J

CFS1/4CT52R181J

KOA Speer Electronics, Inc.

RES 180 OHM 5% 1/4W AXIAL

4259
RWR81S10R5FRBSL

RWR81S10R5FRBSL

Vishay / Dale

RES 10.5 OHM 1W 1% WW AXIAL

0
RNX0253M32FKLB

RNX0253M32FKLB

Vishay / Dale

RES 3.32M OHM 1% 1/2W AXIAL

0
RN55D73R2FR36

RN55D73R2FR36

Vishay / Dale

RES 73.2 OHM 1/8W 1% AXIAL

0
RN65E3161FB14

RN65E3161FB14

Vishay / Dale

RES 3.16K OHM 1/2W 1% AXIAL

0
RN55E1053BB14

RN55E1053BB14

Vishay / Dale

RES 105K OHM 1/8W .1% AXIAL

0
PCF14JT1K50

PCF14JT1K50

Stackpole Electronics, Inc.

RES 1.5K OHM 1/4W 5% AXIAL

0
CMF6080R600FHR6

CMF6080R600FHR6

Vishay / Dale

RES 80.6 OHM 1W 1% AXIAL

0
CMF503K3000FKEB

CMF503K3000FKEB

Vishay / Dale

RES 3.3K OHM 1/4W 1% AXIAL

0
RWR89S2701FSBSL

RWR89S2701FSBSL

Vishay / Dale

RES 2.7K OHM 3W 1% WW AXIAL

0
RN55C3010FB14

RN55C3010FB14

Vishay / Dale

RES 301 OHM 1/8W 1% AXIAL

82

Resistors-Through Hole

1. Overview

Through Hole Resistors (THRs) are axial-leaded electronic components designed to limit current flow and divide voltages in circuits. They are mounted by inserting leads into printed circuit board (PCB) holes and soldering on the reverse side. As foundational passive components, THRs maintain circuit stability and precision across industries. Despite the rise of surface-mount devices, THRs remain critical for high-power applications and prototyping due to their durability and ease of manual handling.

2. Main Types and Functional Classification

TypeFunctional CharacteristicsApplication Examples
Carbon Film ResistorsLow noise, stable performance, cost-effectiveGeneral-purpose electronics, consumer devices
Metal Film ResistorsHigh precision ( 0.1% tolerance), low temperature coefficientMedical instruments, test equipment
Wirewound ResistorsHigh power handling (up to 50W), accurate resistance valuesPower supplies, industrial machinery
Ceramic Composition ResistorsHigh surge current resistancePower line filters, lighting ballasts
Fusible ResistorsActs as both resistor and fuseOvercurrent protection in power circuits

3. Structure and Composition

Typical THRs feature:

  • Lead Wires: Tin-plated copper or silver alloys for solderability
  • Resistive Element: Carbon/metal film or wound nichrome wire
  • Insulating Body: Ceramic or glass-epoxy coating
  • Marking: Color bands (EIA-438B standard) or printed text

Advanced designs incorporate flame-retardant coatings and precision laser-trimmed elements for 0.01% tolerance.

4. Key Technical Specifications

ParameterTypical RangeImportance
Resistance Value1 to 100M Determines current/voltage control
Power Rating1/8W to 50WDefines maximum power dissipation
Tolerance 0.01% to 5%Indicates resistance accuracy
Temperature Coefficient 5ppm/ C to 300ppm/ CMeasures stability over temperature
Voltage Rating200V to 1000VPrevents dielectric breakdown

5. Application Fields

  • Consumer Electronics: Power management in TVs, audio equipment
  • Industrial Control: Motor speed controllers, PLC systems
  • Telecommunications: Signal conditioning in base stations
  • Automotive: Engine control units, LED lighting systems
  • Medical Devices: Precision measurement in diagnostic equipment

Case Study: Metal film resistors in ECG machines provide 0.1% tolerance for accurate heart signal detection.

6. Leading Manufacturers and Products

ManufacturerKey Products
Vishay Precision GroupY1485 series ( 0.005% tolerance wirewound)
Yageo CorporationMF-RC series (metal film, 1/4W to 2W)
Panasonic Electronic ComponentsEVR series (ceramic composition, 250V rating)
Bourns Inc.CR2800 series (fusible resistors)

7. Selection Guidelines

Key considerations:

  1. Determine required power dissipation (select 2x calculated wattage)
  2. Match tolerance to application needs (e.g., 0.1% for audio amplifiers)
  3. Verify temperature coefficient for operating environment
  4. Consider voltage ratings for high-voltage circuits
  5. Check RoHS compliance for environmental regulations

Example: Selecting a 10 , 10W wirewound resistor for a 24V DC motor driver circuit.

8. Industry Trends

Current development directions:

  • Miniaturization while maintaining power ratings (e.g., 5W resistors in 1210 package)
  • Advancements in laser trimming for sub-ppm level precision
  • Adoption of eco-friendly materials meeting REACH/SVHC standards
  • Integration with smart manufacturing systems for automated placement
  • Development of high-temperature resistant models (up to 300 C operating)

Market growth projections indicate a CAGR of 4.2% through 2030, driven by automotive electronics demand.

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