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Resistors-Through Hole

Image Part Number Description / PDF Quantity Rfq
RNC55J7961BSRSL

RNC55J7961BSRSL

Vishay / Dale

RES 7.96K OHM 1/8W .1% AXIAL

0
RLR07C4701GSRSL

RLR07C4701GSRSL

Vishay / Dale

RES 4.7K OHM 2% 1/4W AXIAL

0
RLR05C1130FRRSL

RLR05C1130FRRSL

Vishay / Dale

RES 113 OHM 1% 1/8W AXIAL

0
RN55D2100FRE6

RN55D2100FRE6

Vishay / Dale

RES 210 OHM 1/8W 1% AXIAL

0
RNC60H1184FSRSL

RNC60H1184FSRSL

Vishay / Dale

RES 1.18M OHM 1/4W 1% AXIAL

0
CMF5510M000FKEA

CMF5510M000FKEA

Vishay / Dale

RES 10M OHM 1/2W 1% AXIAL

4950
RLR05C8872FPRE6

RLR05C8872FPRE6

Vishay / Dale

ERL-05 88.7K 1% T-1 RLR05C8872FP

0
RN55D3922FB14

RN55D3922FB14

Vishay / Dale

RES 39.2K OHM 1/8W 1% AXIAL

27
PTF65649K00BYEB

PTF65649K00BYEB

Vishay / Dale

RES 649K OHM 1/4W 0.1% AXIAL

0
RWR74S7501FRRSL

RWR74S7501FRRSL

Vishay / Dale

RES 7.5K OHM 5W 1% WW AXIAL

0
RLR20C6200GRRE5

RLR20C6200GRRE5

Vishay / Dale

ERL-20 620 2% T-1 RLR20C6200GR R

0
RWR84S13R7FSRSL

RWR84S13R7FSRSL

Vishay / Dale

RES 13.7 OHM 7W 1% WW AXIAL

0
RLR07C1470FRR36

RLR07C1470FRR36

Vishay / Dale

RES 147 OHM 1% 1/4W AXIAL

0
CMF601K0000FHEA

CMF601K0000FHEA

Vishay / Dale

RES 1K OHM 1W 1% AXIAL

0
RWR81S10R7FRRSL

RWR81S10R7FRRSL

Vishay / Dale

RES 10.7 OHM 1W 1% WW AXIAL

0
RWR81S46R4FSS70

RWR81S46R4FSS70

Vishay / Dale

RES 46.4 OHM 1W 1% WW AXIAL

0
CMF6040K960BEBF

CMF6040K960BEBF

Vishay / Dale

RES 40.96K OHM 1W 0.1% AXIAL

0
RWR81S1800DSS73

RWR81S1800DSS73

Vishay / Dale

RES 180 OHM 1W 0.5% WW AXIAL

0
RN55D6813FRE6

RN55D6813FRE6

Vishay / Dale

RES 681K OHM 1/8W 1% AXIAL

0
RWR81SR499DSB12

RWR81SR499DSB12

Vishay / Dale

RES 0.499 OHM 1W 0.5% WW AXIAL

0

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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