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Resistors-Through Hole

Image Part Number Description / PDF Quantity Rfq
RNF14BAE16K4

RNF14BAE16K4

Stackpole Electronics, Inc.

RES 16.4K OHM 1/4W .1% AXIAL

0
RNF12BTC73K2

RNF12BTC73K2

Stackpole Electronics, Inc.

RES 73.2K OHM 1/2W .1% AXIAL

0
RNF18FTD95R3

RNF18FTD95R3

Stackpole Electronics, Inc.

RES 95.3 OHM 1/8W 1% AXIAL

0
WW3FT220R

WW3FT220R

Stackpole Electronics, Inc.

RES 220 OHM 3W 1% AXIAL

1610
RNF14FTC324K

RNF14FTC324K

Stackpole Electronics, Inc.

RES 324K OHM 1/4W 1% AXIAL

0
RSMF1JT1R60

RSMF1JT1R60

Stackpole Electronics, Inc.

RES 1.6 OHM 1W 5% AXIAL

0
CF18JT1R80

CF18JT1R80

Stackpole Electronics, Inc.

RES 1.8 OHM 1/8W 5% AXIAL

0
RNF18FTD1M30

RNF18FTD1M30

Stackpole Electronics, Inc.

RES 1.3M OHM 1/8W 1% AXIAL

0
RNF14BAE732R

RNF14BAE732R

Stackpole Electronics, Inc.

RES 732 OHM 1/4W .1% AXIAL

0
RSF1FT59R0

RSF1FT59R0

Stackpole Electronics, Inc.

RES 59 OHM 1W 1% AXIAL

0
RNF14FTD221K

RNF14FTD221K

Stackpole Electronics, Inc.

RES 221K OHM 1/4W 1% AXIAL

7786
WW1FT1K27

WW1FT1K27

Stackpole Electronics, Inc.

RES 1.27K OHM 1W 1% AXIAL

0
RSMF5JA33R0

RSMF5JA33R0

Stackpole Electronics, Inc.

RES 33 OHM 5W 5% AXIAL

0
WW12JT1R80

WW12JT1R80

Stackpole Electronics, Inc.

RES 1.8 OHM 0.4W 5% AXIAL

0
WW1FT64R9

WW1FT64R9

Stackpole Electronics, Inc.

RES 64.9 OHM 1W 1% AXIAL

0
RNF12FTD20K5

RNF12FTD20K5

Stackpole Electronics, Inc.

RES 20.5K OHM 1/2W 1% AXIAL

0
WW1FT2R21

WW1FT2R21

Stackpole Electronics, Inc.

RES 2.21 OHM 1W 1% AXIAL

0
RNF14FTC78R7

RNF14FTC78R7

Stackpole Electronics, Inc.

RES 78.7 OHM 1/4W 1% AXIAL

0
CFM12JT13R0

CFM12JT13R0

Stackpole Electronics, Inc.

RES 13 OHM 1/2W 5% CF MINI

0
TR35JBX1R00

TR35JBX1R00

Stackpole Electronics, Inc.

RES 1 OHM 35W 5% TO220

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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