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Resistors-Through Hole

Image Part Number Description / PDF Quantity Rfq
CF1/2CT52R102J

CF1/2CT52R102J

KOA Speer Electronics, Inc.

RES 1K OHM 5% 1/2W AXIAL

50020
CF1/4CT52R752J

CF1/4CT52R752J

KOA Speer Electronics, Inc.

RES 7.5K OHM 5% 1/4W AXIAL

9617
CF1/2CT52R515J

CF1/2CT52R515J

KOA Speer Electronics, Inc.

RES 5.1M OHM 5% 1/2W AXIAL

4830
CF1/2CT52R333J

CF1/2CT52R333J

KOA Speer Electronics, Inc.

RES 33K OHM 5% 1/2W AXIAL

3953
CF1/4C472J

CF1/4C472J

KOA Speer Electronics, Inc.

RES 4.7K OHM 5% 1/4W AXIAL

2772
CFS1/2CT52R510J

CFS1/2CT52R510J

KOA Speer Electronics, Inc.

RES 51 OHM 5% 1/2W AXIAL

0
CFS1/2CT52R301J

CFS1/2CT52R301J

KOA Speer Electronics, Inc.

RES 300 OHM 5% 1/2W AXIAL

0
CF1/4CT52R300J

CF1/4CT52R300J

KOA Speer Electronics, Inc.

RES 30 OHM 5% 1/4W AXIAL

0
CF1/2CT52R473J

CF1/2CT52R473J

KOA Speer Electronics, Inc.

RES 47K OHM 5% 1/2W AXIAL

7834
CF1/4C822J

CF1/4C822J

KOA Speer Electronics, Inc.

RES 8.2K OHM 5% 1/4W AXIAL

3247
CFS1/2CT52R511J

CFS1/2CT52R511J

KOA Speer Electronics, Inc.

RES 510 OHM 5% 1/2W AXIAL

0
CFS1/2C102J

CFS1/2C102J

KOA Speer Electronics, Inc.

RES 1K OHM 5% 1/2W AXIAL

919
CF1/4C274J

CF1/4C274J

KOA Speer Electronics, Inc.

RES 270K OHM 5% 1/4W AXIAL

1440
CF1/4CT52R563J

CF1/4CT52R563J

KOA Speer Electronics, Inc.

RES 56K OHM 5% 1/4W AXIAL

9757
CF1/4CT52R112J

CF1/4CT52R112J

KOA Speer Electronics, Inc.

RES 1.1K OHM 5% 1/4W AXIAL

0
CF1/4CT52R113J

CF1/4CT52R113J

KOA Speer Electronics, Inc.

RES 11K OHM 5% 1/4W AXIAL

0
CF1/2CT52R271J

CF1/2CT52R271J

KOA Speer Electronics, Inc.

RES 270 OHM 5% 1/2W AXIAL

7887
CFS1/4CT52R333J

CFS1/4CT52R333J

KOA Speer Electronics, Inc.

RES 33K OHM 5% 1/4W AXIAL

14102
CF1/4CT52R360J

CF1/4CT52R360J

KOA Speer Electronics, Inc.

RES 36 OHM 5% 1/4W AXIAL

0
CF1/2CT52R2R7J

CF1/2CT52R2R7J

KOA Speer Electronics, Inc.

RES 2.7 OHM 5% 1/2W AXIAL

8000

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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