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Resistors-Through Hole

Image Part Number Description / PDF Quantity Rfq
RNF18BTC267R

RNF18BTC267R

Stackpole Electronics, Inc.

RES 267 OHM 1/8W .1% AXIAL

0
RNF14FTD22K6

RNF14FTD22K6

Stackpole Electronics, Inc.

RES 22.6K OHM 1/4W 1% AXIAL

4998
RSMF2JT6R80

RSMF2JT6R80

Stackpole Electronics, Inc.

RES 6.8 OHM 2W 5% AXIAL

0
RNF14FAE158R

RNF14FAE158R

Stackpole Electronics, Inc.

RES 158 OHM 1/4W 1% AXIAL

0
RSMF2JB8K20

RSMF2JB8K20

Stackpole Electronics, Inc.

RES 8.2K OHM 2W 5% AXIAL

0
RNF18FTD133R

RNF18FTD133R

Stackpole Electronics, Inc.

RES 133 OHM 1/8W 1% AXIAL

0
RNF14BTE499K

RNF14BTE499K

Stackpole Electronics, Inc.

RES 499K OHM 1/4W .1% AXIAL

0
WW3AJT120R

WW3AJT120R

Stackpole Electronics, Inc.

RES 120 OHM 3W 5% AXIAL

0
RSF1GB1K50

RSF1GB1K50

Stackpole Electronics, Inc.

RES 1.5K OHM 1W 2% AXIAL

0
RNF14JTD390K

RNF14JTD390K

Stackpole Electronics, Inc.

RES 390K OHM 1/4W 5% AXIAL

0
RSMF3JB220R

RSMF3JB220R

Stackpole Electronics, Inc.

RES 220 OHM 3W 5% AXIAL

0
RNF14BTC8K19

RNF14BTC8K19

Stackpole Electronics, Inc.

RES 8.19K OHM 1/4W 0.1% AXIAL

0
VM3JB31R0

VM3JB31R0

Stackpole Electronics, Inc.

RES 31 OHM 3W 5% RADIAL

0
VM10JB8R20

VM10JB8R20

Stackpole Electronics, Inc.

RES CERM WW 10W 8.2 OHM 5% VERT

0
WW12FT174R

WW12FT174R

Stackpole Electronics, Inc.

RES 174 OHM 0.4W 1% AXIAL

0
RNF14BAE1K37

RNF14BAE1K37

Stackpole Electronics, Inc.

RES 1.37K OHM 1/4W .1% AXIAL

0
CFM14JT7R50

CFM14JT7R50

Stackpole Electronics, Inc.

RES 7.5 OHM 1/4W 5% CF MINI

20000
RNF14BAE58K3

RNF14BAE58K3

Stackpole Electronics, Inc.

RES 58.3K OHM 1/4W .1% AXIAL

0
RNF14JTD470K

RNF14JTD470K

Stackpole Electronics, Inc.

RES 470K OHM 1/4W 5% AXIAL

0
RNF14BAE876R

RNF14BAE876R

Stackpole Electronics, Inc.

RES 876 OHM 1/4W .1% 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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