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Resistors-Through Hole

Image Part Number Description / PDF Quantity Rfq
RSF2FT2K00

RSF2FT2K00

Stackpole Electronics, Inc.

RES 2K OHM 2W 1% AXIAL

0
CFM14JA51K0

CFM14JA51K0

Stackpole Electronics, Inc.

RES 51K OHM 1/4W 5% CF MINI

0
CB15JB43R0

CB15JB43R0

Stackpole Electronics, Inc.

RES 43 OHM 15W 5% CERAMIC WW

0
RNF18FTC2R00

RNF18FTC2R00

Stackpole Electronics, Inc.

RES 2 OHM 1/8W 1% AXIAL

0
RSMF2JT11K0

RSMF2JT11K0

Stackpole Electronics, Inc.

RES 11K OHM 2W 5% AXIAL

0
RNF14BAE3K74

RNF14BAE3K74

Stackpole Electronics, Inc.

RES 3.74K OHM 1/4W .1% AXIAL

0
RSF1JB33K0

RSF1JB33K0

Stackpole Electronics, Inc.

RES 33K OHM 1W 5% AXIAL

0
RNF18FTD61K9

RNF18FTD61K9

Stackpole Electronics, Inc.

RES 61.9K OHM 1/8W 1% AXIAL

0
RC12KT68K0

RC12KT68K0

Stackpole Electronics, Inc.

RES 68K OHM 1/2W 10% AXIAL

0
WW1FT2R05

WW1FT2R05

Stackpole Electronics, Inc.

RES 2.05 OHM 1W 1% AXIAL

0
WW1FT681R

WW1FT681R

Stackpole Electronics, Inc.

RES 681 OHM 1W 1% AXIAL

0
RNF1FTD56R2

RNF1FTD56R2

Stackpole Electronics, Inc.

RES 56.2 OHM 1W 1% AXIAL

0
RNF14BAE18K9

RNF14BAE18K9

Stackpole Electronics, Inc.

RES 18.9K OHM 1/4W .1% AXIAL

0
CFM12JT39R0

CFM12JT39R0

Stackpole Electronics, Inc.

RES 39 OHM 1/2W 5% CF MINI

12008
CB15JBR430

CB15JBR430

Stackpole Electronics, Inc.

RES 0.43 OHM 15W 5% CERAMIC WW

0
CF18JT200R

CF18JT200R

Stackpole Electronics, Inc.

RES 200 OHM 1/8W 5% AXIAL

17727
RSMF1JT11K0

RSMF1JT11K0

Stackpole Electronics, Inc.

RES 11K OHM 1W 5% AXIAL

0
RSMF1FT1K21

RSMF1FT1K21

Stackpole Electronics, Inc.

RES 1.21K OHM 1W 1% AXIAL

0
RSMF12JT1R50

RSMF12JT1R50

Stackpole Electronics, Inc.

RES 1.5 OHM 1/2W 5% AXIAL

0
RNF14BTC68K1

RNF14BTC68K1

Stackpole Electronics, Inc.

RES 68.1K 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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