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Resistors-Through Hole

Image Part Number Description / PDF Quantity Rfq
RNF14BTC6K65

RNF14BTC6K65

Stackpole Electronics, Inc.

RES 6.65K OHM 1/4W .1% AXIAL

0
RNF14FTD221R

RNF14FTD221R

Stackpole Electronics, Inc.

RES 221 OHM 1/4W 1% AXIAL

24338
RNF14FTD23R2

RNF14FTD23R2

Stackpole Electronics, Inc.

RES 23.2 OHM 1/4W 1% AXIAL

0
RNF12FTC200K

RNF12FTC200K

Stackpole Electronics, Inc.

RES 200K OHM 1/2W 1% AXIAL

0
LVM5JB30L0

LVM5JB30L0

Stackpole Electronics, Inc.

RES CERAMIC 0.03 OHM 5W 5% VERT

0
RNF18FTD82R5

RNF18FTD82R5

Stackpole Electronics, Inc.

RES 82.5 OHM 1/8W 1% AXIAL

0
HVAM36FBC10M0

HVAM36FBC10M0

Stackpole Electronics, Inc.

RES 10M OHM 1% 3.6W AXIAL

0
RNF18FTD2K67

RNF18FTD2K67

Stackpole Electronics, Inc.

RES 2.67K OHM 1/8W 1% AXIAL

0
RSMF1JBR100

RSMF1JBR100

Stackpole Electronics, Inc.

RES 0.1 OHM 1W 5% AXIAL

0
RNF14FTC4M75

RNF14FTC4M75

Stackpole Electronics, Inc.

RES 4.75M OHM 1/4W 1% AXIAL

0
PCF14JT30R0

PCF14JT30R0

Stackpole Electronics, Inc.

RES 30 OHM 1/4W 5% AXIAL

0
RNF18FTE95R3

RNF18FTE95R3

Stackpole Electronics, Inc.

RES 95.3 OHM 1/8W 1% AXIAL

0
RNMF14FTD45R3

RNMF14FTD45R3

Stackpole Electronics, Inc.

RES 45.3 OHM 1/4W 1% AXIAL

0
RSMF2FB332R

RSMF2FB332R

Stackpole Electronics, Inc.

RES 332 OHM 2W 1% AXIAL

0
CB3JB91R0

CB3JB91R0

Stackpole Electronics, Inc.

RES 91 OHM 3W 5% CERAMIC WW

0
RC14JT51R0

RC14JT51R0

Stackpole Electronics, Inc.

RES 51 OHM 1/4W 5% AXIAL

6717
RNF1FTD2K00

RNF1FTD2K00

Stackpole Electronics, Inc.

RES 2K OHM 1W 1% AXIAL

0
RNF14BAC200K

RNF14BAC200K

Stackpole Electronics, Inc.

RES 200K OHM 1/4W .1% AXIAL

0
RC12JB4K30

RC12JB4K30

Stackpole Electronics, Inc.

RES 4.3K OHM 1/2W 5% AXIAL

0
RNF18FTD3K83

RNF18FTD3K83

Stackpole Electronics, Inc.

RES 3.83K OHM 1/8W 1% AXIAL

20715

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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