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Resistors-Through Hole

Image Part Number Description / PDF Quantity Rfq
RNF18FTD49K9

RNF18FTD49K9

Stackpole Electronics, Inc.

RES 49.9K OHM 1/8W 1% AXIAL

15035
CFM14JT22K0

CFM14JT22K0

Stackpole Electronics, Inc.

RES 22K OHM 1/4W 5% CF MINI

11627
RSMF3JB10K0

RSMF3JB10K0

Stackpole Electronics, Inc.

RES 10K OHM 3W 5% AXIAL

0
RNF18FTD3R24

RNF18FTD3R24

Stackpole Electronics, Inc.

RES 3.24 OHM 1/8W 1% AXIAL

0
RNF1FTD51K1

RNF1FTD51K1

Stackpole Electronics, Inc.

RES 51.1K OHM 1W 1% AXIAL

0
SP3AJT33R0

SP3AJT33R0

Stackpole Electronics, Inc.

RES FUSE 33 OHM 4W 5% UL AXIAL

5348
RNF14FTC88K7

RNF14FTC88K7

Stackpole Electronics, Inc.

RES 88.7K OHM 1/4W 1% AXIAL

0
RNF18FTC1K50

RNF18FTC1K50

Stackpole Electronics, Inc.

RES 1.5K OHM 1/8W 1% AXIAL

0
RNF14BTE150K

RNF14BTE150K

Stackpole Electronics, Inc.

RES 150K OHM 1/4W .1% AXIAL

0
RNMF12FTD6K98

RNMF12FTD6K98

Stackpole Electronics, Inc.

RES 6.98K OHM 1/2W 1% AXIAL

0
RNF18BTD42K2

RNF18BTD42K2

Stackpole Electronics, Inc.

RES 42.2K OHM 1/8W .1% AXIAL

0
RNF14BTC130R

RNF14BTC130R

Stackpole Electronics, Inc.

RES 130 OHM 1/4W .1% AXIAL

0
CF12JA15K0

CF12JA15K0

Stackpole Electronics, Inc.

RES 15K OHM 1/2W 5% AXIAL

22000
RNF14JTD510K

RNF14JTD510K

Stackpole Electronics, Inc.

RES 510K OHM 1/4W 5% AXIAL

0
RNF1FTC374K

RNF1FTC374K

Stackpole Electronics, Inc.

RES 374K OHM 1W 1% AXIAL

0
CF1JT3K30

CF1JT3K30

Stackpole Electronics, Inc.

RES 3.3K OHM 1W 5% AXIAL

0
RNF14DTC35K7

RNF14DTC35K7

Stackpole Electronics, Inc.

RES 35.7K OHM 1/4W .5% AXIAL

0
PRNF14FTD4K99

PRNF14FTD4K99

Stackpole Electronics, Inc.

RES 4.99K OHM 1/4W 1% AXIAL

0
RNF14BAE30K5

RNF14BAE30K5

Stackpole Electronics, Inc.

RES 30.5K OHM 1/4W .1% AXIAL

0
RNF18BTE499R

RNF18BTE499R

Stackpole Electronics, Inc.

RES 499 OHM 1/8W 0.1% 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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