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Resistors-Through Hole

Image Part Number Description / PDF Quantity Rfq
CFS1/4CT52R562J

CFS1/4CT52R562J

KOA Speer Electronics, Inc.

RES 5.6K OHM 5% 1/4W AXIAL

9960
CF1/2CT52R273J

CF1/2CT52R273J

KOA Speer Electronics, Inc.

RES 27K OHM 5% 1/2W AXIAL

15788
CF1/4CT52R120J

CF1/4CT52R120J

KOA Speer Electronics, Inc.

RES 12 OHM 5% 1/4W AXIAL

9943
CF1/4CT52R514J

CF1/4CT52R514J

KOA Speer Electronics, Inc.

RES 510K OHM 5% 1/4W AXIAL

9045
CF1/2CT52R241J

CF1/2CT52R241J

KOA Speer Electronics, Inc.

RES 240 OHM 5% 1/2W AXIAL

11678
CFS1/2C561J

CFS1/2C561J

KOA Speer Electronics, Inc.

RES 560 OHM 5% 1/2W AXIAL

0
CFS1/2CT52R271J

CFS1/2CT52R271J

KOA Speer Electronics, Inc.

RES 270 OHM 5% 1/2W AXIAL

0
CF1/4CT52R394J

CF1/4CT52R394J

KOA Speer Electronics, Inc.

RES 390K OHM 5% 1/4W AXIAL

14940
CF1/4C562J

CF1/4C562J

KOA Speer Electronics, Inc.

RES 5.6K OHM 5% 1/4W AXIAL

1930
CF1/4CT52R3R0J

CF1/4CT52R3R0J

KOA Speer Electronics, Inc.

RES 3 OHM 5% 1/4W AXIAL

0
CF1/4CT52R362J

CF1/4CT52R362J

KOA Speer Electronics, Inc.

RES 3.6K OHM 5% 1/4W AXIAL

9848
CF1/4C273J

CF1/4C273J

KOA Speer Electronics, Inc.

RES 27K OHM 5% 1/4W AXIAL

1998
CFS1/4CT52R184J

CFS1/4CT52R184J

KOA Speer Electronics, Inc.

RES 180K OHM 5% 1/4W AXIAL

9986
CFS1/4CT52R4R7J

CFS1/4CT52R4R7J

KOA Speer Electronics, Inc.

RES 4.7 OHM 5% 1/4W AXIAL

9354
CF1/4CT52R111J

CF1/4CT52R111J

KOA Speer Electronics, Inc.

RES 110 OHM 5% 1/4W AXIAL

0
CF1/4CT52R475J

CF1/4CT52R475J

KOA Speer Electronics, Inc.

RES 4.7M OHM 5% 1/4W AXIAL

29889
CF1/4CT52R435J

CF1/4CT52R435J

KOA Speer Electronics, Inc.

RES 4.3M OHM 5% 1/4W AXIAL

0
CF1/4C100J

CF1/4C100J

KOA Speer Electronics, Inc.

RES 10 OHM 5% 1/4W AXIAL

0
CF1/4CT52R395J

CF1/4CT52R395J

KOA Speer Electronics, Inc.

RES 3.9M OHM 5% 1/4W AXIAL

0
CF1/2CT52R153J

CF1/2CT52R153J

KOA Speer Electronics, Inc.

RES 15K OHM 5% 1/2W AXIAL

12793

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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