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Resistors-Through Hole

Image Part Number Description / PDF Quantity Rfq
CF18JT390R

CF18JT390R

Stackpole Electronics, Inc.

RES 390 OHM 1/8W 5% AXIAL

674910000
RC12JT6K20

RC12JT6K20

Stackpole Electronics, Inc.

RES 6.2K OHM 1/2W 5% AXIAL

0
WW1FT475R

WW1FT475R

Stackpole Electronics, Inc.

RES 475 OHM 1W 1% AXIAL

0
RNF14BTD60K4

RNF14BTD60K4

Stackpole Electronics, Inc.

RES 60.4K OHM 1/4W .1% AXIAL

0
RNF14FTE158K

RNF14FTE158K

Stackpole Electronics, Inc.

RES 158K OHM 1/4W 1% AXIAL

0
RNF14FTC137K

RNF14FTC137K

Stackpole Electronics, Inc.

RES 137K OHM 1/4W 1% AXIAL

0
RSMF2JB12K0

RSMF2JB12K0

Stackpole Electronics, Inc.

RES 12K OHM 2W 5% AXIAL

0
RNF14BTE5K42

RNF14BTE5K42

Stackpole Electronics, Inc.

RES 5.42K OHM 1/4W .1% AXIAL

0
RSMF1JT82R0

RSMF1JT82R0

Stackpole Electronics, Inc.

RES 82 OHM 1W 5% AXIAL

15000
RNF18FTD2K43

RNF18FTD2K43

Stackpole Electronics, Inc.

RES 2.43K OHM 1/8W 1% AXIAL

0
RNF18BTD9K31

RNF18BTD9K31

Stackpole Electronics, Inc.

RES 9.31K OHM 1/8W .1% AXIAL

0
RNV14FAL1M00

RNV14FAL1M00

Stackpole Electronics, Inc.

RES MF HV .25W 1M OHM 1% AXIAL

105973
CF12JA820R

CF12JA820R

Stackpole Electronics, Inc.

RES 820 OHM 1/2W 5% AXIAL

0
RNF14FTE196K

RNF14FTE196K

Stackpole Electronics, Inc.

RES 196K OHM 1/4W 1% AXIAL

0
CF14JT62K0

CF14JT62K0

Stackpole Electronics, Inc.

RES 62K OHM 1/4W 5% AXIAL

66655000
RSMF3JB27R0

RSMF3JB27R0

Stackpole Electronics, Inc.

RES 27 OHM 3W 5% AXIAL

0
RNF18DTE422K

RNF18DTE422K

Stackpole Electronics, Inc.

RES 422K OHM 1/8W .5% AXIAL

0
RNF14BAE284R

RNF14BAE284R

Stackpole Electronics, Inc.

RES 284 OHM 1/4W .1% AXIAL

0
WW1FT1R87

WW1FT1R87

Stackpole Electronics, Inc.

RES 1.87 OHM 1W 1% AXIAL

0
RNF18FTD196K

RNF18FTD196K

Stackpole Electronics, Inc.

RES 196K OHM 1/8W 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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