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Resistors-Through Hole

Image Part Number Description / PDF Quantity Rfq
RNF18BTD3K01

RNF18BTD3K01

Stackpole Electronics, Inc.

RES 3.01K OHM 1/8W .1% AXIAL

0
RNF14FTC976K

RNF14FTC976K

Stackpole Electronics, Inc.

RES 976K OHM 1/4W 1% AXIAL

0
RNF14FTC56R2

RNF14FTC56R2

Stackpole Electronics, Inc.

RES 56.2 OHM 1/4W 1% AXIAL

0
RNF14FTE215R

RNF14FTE215R

Stackpole Electronics, Inc.

RES 215 OHM 1/4W 1% AXIAL

0
RSMF3JT10K0

RSMF3JT10K0

Stackpole Electronics, Inc.

RES 10K OHM 3W 5% AXIAL

1410
CB15JB120R

CB15JB120R

Stackpole Electronics, Inc.

RES 120 OHM 15W 5% CERAMIC WW

0
RNF18FAD10K0

RNF18FAD10K0

Stackpole Electronics, Inc.

RES 10K OHM 1/8W 1% AXIAL

0
RNMF14FTD210K

RNMF14FTD210K

Stackpole Electronics, Inc.

RES 210K OHM 1/4W 1% AXIAL

0
RSMF5JT68R0

RSMF5JT68R0

Stackpole Electronics, Inc.

RES 68 OHM 5W 5% AXIAL

0
HDM14JT18R0

HDM14JT18R0

Stackpole Electronics, Inc.

RES 18 OHM 1/4W 5% AXIAL

0
WCB15FB18K0

WCB15FB18K0

Stackpole Electronics, Inc.

RES CERM WW 15W 18K OHM 1%

0
CB3JB3R90

CB3JB3R90

Stackpole Electronics, Inc.

RES 3.9 OHM 3W 5% CERAMIC WW

0
RNF14FTC66K5

RNF14FTC66K5

Stackpole Electronics, Inc.

RES 66.5K OHM 1/4W 1% AXIAL

0
RSMF2JB1K80

RSMF2JB1K80

Stackpole Electronics, Inc.

RES 1.8K OHM 2W 5% AXIAL

0
CFM14JT1M20

CFM14JT1M20

Stackpole Electronics, Inc.

RES 1.2M OHM 1/4W 5% CF MINI

4989
RNF14FTC158K

RNF14FTC158K

Stackpole Electronics, Inc.

RES 158K OHM 1/4W 1% AXIAL

0
PCF14JT100K

PCF14JT100K

Stackpole Electronics, Inc.

RES 100K OHM 1/4W 5% AXIAL

0
RNF14FTC41K2

RNF14FTC41K2

Stackpole Electronics, Inc.

RES 41.2K OHM 1/4W 1% AXIAL

0
RNF14FTC14K3

RNF14FTC14K3

Stackpole Electronics, Inc.

RES 14.3K OHM 1/4W 1% AXIAL

0
RSF2JT120K

RSF2JT120K

Stackpole Electronics, Inc.

RES 120K OHM 2W 5% 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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