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Resistors-Through Hole

Image Part Number Description / PDF Quantity Rfq
RNF12FTE499K

RNF12FTE499K

Stackpole Electronics, Inc.

RES 499K OHM 1/2W 1% AXIAL

0
RNF12FTD274R

RNF12FTD274R

Stackpole Electronics, Inc.

RES 274 OHM 1/2W 1% AXIAL

0
RNF14BTE287R

RNF14BTE287R

Stackpole Electronics, Inc.

RES 287 OHM 1/4W .1% AXIAL

0
RNF14FTD8K06

RNF14FTD8K06

Stackpole Electronics, Inc.

RES 8.06K OHM 1/4W 1% AXIAL

2558
RSMF3JT2K40

RSMF3JT2K40

Stackpole Electronics, Inc.

RES 2.4K OHM 3W 5% AXIAL

0
WW12FT604R

WW12FT604R

Stackpole Electronics, Inc.

RES 604 OHM 0.4W 1% AXIAL

0
RNF14FTD61K9

RNF14FTD61K9

Stackpole Electronics, Inc.

RES 61.9K OHM 1/4W 1% AXIAL

6441
RNMF14FTD90K9

RNMF14FTD90K9

Stackpole Electronics, Inc.

RES 90.9K OHM 1/4W 1% AXIAL

0
RNF14FAD49K9

RNF14FAD49K9

Stackpole Electronics, Inc.

RES 49.9K OHM 1/4W 1% AXIAL

0
RNF14BTD2K74

RNF14BTD2K74

Stackpole Electronics, Inc.

RES 2.74K OHM 1/4W .1% AXIAL

0
RSMF3JT33R0

RSMF3JT33R0

Stackpole Electronics, Inc.

RES 33 OHM 3W 5% AXIAL

0
RNF14BTC3K57

RNF14BTC3K57

Stackpole Electronics, Inc.

RES 3.57K OHM 1/4W .1% AXIAL

0
RNF14BAE1K18

RNF14BAE1K18

Stackpole Electronics, Inc.

RES 1.18K OHM 1/4W .1% AXIAL

0
WW12FT165R

WW12FT165R

Stackpole Electronics, Inc.

RES 165 OHM 0.4W 1% AXIAL

0
RNMF14FTD274K

RNMF14FTD274K

Stackpole Electronics, Inc.

RES 274K OHM 1/4W 1% AXIAL

0
RNMF14JTD100K

RNMF14JTD100K

Stackpole Electronics, Inc.

RES 100K OHM 1/4W 5% AXIAL

0
RNF14FTD3K60

RNF14FTD3K60

Stackpole Electronics, Inc.

RES 3.6K OHM 1/4W 1% AXIAL

0
RNF18FTD549R

RNF18FTD549R

Stackpole Electronics, Inc.

RES 549 OHM 1/8W 1% AXIAL

0
RNF12FTD845R

RNF12FTD845R

Stackpole Electronics, Inc.

RES 845 OHM 1/2W 1% AXIAL

0
RNF14BTD4K02

RNF14BTD4K02

Stackpole Electronics, Inc.

RES 4.02K 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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