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Resistors-Through Hole

Image Part Number Description / PDF Quantity Rfq
CFS1/4C223J

CFS1/4C223J

KOA Speer Electronics, Inc.

RES 22K OHM 5% 1/4W AXIAL

3782
CFS1/4CT52R102G

CFS1/4CT52R102G

KOA Speer Electronics, Inc.

RES 1K OHM 2% 1/4W AXIAL

1761
CF1/4C471J

CF1/4C471J

KOA Speer Electronics, Inc.

RES 470 OHM 5% 1/4W AXIAL

1717
CF1/4CT52R273J

CF1/4CT52R273J

KOA Speer Electronics, Inc.

RES 27K OHM 5% 1/4W AXIAL

14790
CF1/4CT52R161J

CF1/4CT52R161J

KOA Speer Electronics, Inc.

RES 160 OHM 5% 1/4W AXIAL

13907
CF1/4CT52R134J

CF1/4CT52R134J

KOA Speer Electronics, Inc.

RES 130K OHM 5% 1/4W AXIAL

9895
CF1/2CT52R821J

CF1/2CT52R821J

KOA Speer Electronics, Inc.

RES 820 OHM 5% 1/2W AXIAL

31839
CF1/4CT52R470J

CF1/4CT52R470J

KOA Speer Electronics, Inc.

RES 47 OHM 5% 1/4W AXIAL

19471
CF1/4CT52R243J

CF1/4CT52R243J

KOA Speer Electronics, Inc.

RES 24K OHM 5% 1/4W AXIAL

9436
CF1/2CT52R200J

CF1/2CT52R200J

KOA Speer Electronics, Inc.

RES 20 OHM 5% 1/2W AXIAL

7975
CFS1/4CT52R131J

CFS1/4CT52R131J

KOA Speer Electronics, Inc.

RES 130 OHM 5% 1/4W AXIAL

0
CF1/4CT52R153J

CF1/4CT52R153J

KOA Speer Electronics, Inc.

RES 15K OHM 5% 1/4W AXIAL

8348
CF1/4CT52R823J

CF1/4CT52R823J

KOA Speer Electronics, Inc.

RES 82K OHM 5% 1/4W AXIAL

9916
CFS1/4C102J

CFS1/4C102J

KOA Speer Electronics, Inc.

RES 1K OHM 5% 1/4W AXIAL

5425
CFS1/2CT52R2R7J

CFS1/2CT52R2R7J

KOA Speer Electronics, Inc.

RES 2.7 OHM 5% 1/2W AXIAL

0
CF1/2CT52R221J

CF1/2CT52R221J

KOA Speer Electronics, Inc.

RES 220 OHM 5% 1/2W AXIAL

7786
CF1/2CT52R823J

CF1/2CT52R823J

KOA Speer Electronics, Inc.

RES 82K OHM 5% 1/2W AXIAL

7710
CFS1/4CT52R681J

CFS1/4CT52R681J

KOA Speer Electronics, Inc.

RES 680 OHM 5% 1/4W AXIAL

9760
CF1/4CT52R305J

CF1/4CT52R305J

KOA Speer Electronics, Inc.

RES 3M OHM 5% 1/4W AXIAL

0
CF1/4CT52R275J

CF1/4CT52R275J

KOA Speer Electronics, Inc.

RES 2.7M OHM 5% 1/4W AXIAL

9440

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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