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Resistors-Through Hole

Image Part Number Description / PDF Quantity Rfq
CFS1/4CT52R683J

CFS1/4CT52R683J

KOA Speer Electronics, Inc.

RES 68K OHM 5% 1/4W AXIAL

9845
CF1/4CT52R304J

CF1/4CT52R304J

KOA Speer Electronics, Inc.

RES 300K OHM 5% 1/4W AXIAL

9907
CF1/2CT52R150J

CF1/2CT52R150J

KOA Speer Electronics, Inc.

RES 15 OHM 5% 1/2W AXIAL

7639
CF1/4CT52R182J

CF1/4CT52R182J

KOA Speer Electronics, Inc.

RES 1.8K OHM 5% 1/4W AXIAL

5226
CFS1/2CT52R222J

CFS1/2CT52R222J

KOA Speer Electronics, Inc.

RES 2.2K OHM 5% 1/2W AXIAL

0
CF1/2CT52R205J

CF1/2CT52R205J

KOA Speer Electronics, Inc.

RES 2M OHM 5% 1/2W AXIAL

15973
CFS1/2CT52R821J

CFS1/2CT52R821J

KOA Speer Electronics, Inc.

RES 820 OHM 5% 1/2W AXIAL

0
CFS1/2CT52R620J

CFS1/2CT52R620J

KOA Speer Electronics, Inc.

RES 62 OHM 5% 1/2W AXIAL

0
CF1/4CT52R2R2J

CF1/4CT52R2R2J

KOA Speer Electronics, Inc.

RES 2.2 OHM 5% 1/4W AXIAL

9642
CF1/4C511J

CF1/4C511J

KOA Speer Electronics, Inc.

RES 510 OHM 5% 1/4W AXIAL

0
CFS1/2CT52R205J

CFS1/2CT52R205J

KOA Speer Electronics, Inc.

RES 2M OHM 5% 1/2W AXIAL

0
CFS1/2CT52R330J

CFS1/2CT52R330J

KOA Speer Electronics, Inc.

RES 33 OHM 5% 1/2W AXIAL

0
CF1/4CT52R101J

CF1/4CT52R101J

KOA Speer Electronics, Inc.

RES 100 OHM 5% 1/4W AXIAL

4092
CFS1/4CT52R121J

CFS1/4CT52R121J

KOA Speer Electronics, Inc.

RES 120 OHM 5% 1/4W AXIAL

9419
CF1/4CT52R122J

CF1/4CT52R122J

KOA Speer Electronics, Inc.

RES 1.2K OHM 5% 1/4W AXIAL

9214
CF1/4CT52R302J

CF1/4CT52R302J

KOA Speer Electronics, Inc.

RES 3K OHM 5% 1/4W AXIAL

9869
CF1/4CT52R152J

CF1/4CT52R152J

KOA Speer Electronics, Inc.

RES 1.5K OHM 5% 1/4W AXIAL

7590
CF1/4CT52R433J

CF1/4CT52R433J

KOA Speer Electronics, Inc.

RES 43K OHM 5% 1/4W AXIAL

9823
CF1/4CT52R125J

CF1/4CT52R125J

KOA Speer Electronics, Inc.

RES 1.2M OHM 5% 1/4W 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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