Resistors-Through Hole

Part Number	Description / PDF	Quantity
10W5D6 NTE Electronics, Inc.	10W 5.6 OHM 5%	536
QWCC033 NTE Electronics, Inc.	RES-1/4W 33 OHM 5%	749
3WR1D0 NTE Electronics, Inc.	RES-3W 1 OHM 5%	4
QWCC047 NTE Electronics, Inc.	RES-1/4W 47 OHM 5%	388
3W110 NTE Electronics, Inc.	3W 100 OHM 5%	1063
HW313 NTE Electronics, Inc.	1/2W 13K OHM 2%	1316
F2W112 NTE Electronics, Inc.	2W 120 OHM 5% FUSE	1053
EW2D2 NTE Electronics, Inc.	1/8W 2.2 OHM 2%	2020
3W4D3 NTE Electronics, Inc.	3W 4.3 OHM 5%	315
EW391 NTE Electronics, Inc.	1/8W 91K OHM 2%	1466
1W6D2 NTE Electronics, Inc.	RES-1W 6.2 OHM 5%	330
HW522 NTE Electronics, Inc.	1/2W 2.2 MEG OHM 2%	109
QW412 NTE Electronics, Inc.	1/4W 120K OHM 2%	4706
1W347 NTE Electronics, Inc.	RES-1W 47K OHM 2%	2094
QW3267BR NTE Electronics, Inc.	1/4W 267K OHM 1% METAL	2960
10WRD50 NTE Electronics, Inc.	RES-10W 0.50 OHM 5%	132
QW147 NTE Electronics, Inc.	1/4W 470 OHM 2%	2928
QW2249BR NTE Electronics, Inc.	1/4W 24.9K OHM 1% METAL	2994
1W318 NTE Electronics, Inc.	RES-1W 18K OHM 2%	834
1WCC268 NTE Electronics, Inc.	RES-1W 6.8K OHM 10%	185

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

Type	Functional Characteristics	Application Examples
Carbon Film Resistors	Low noise, stable performance, cost-effective	General-purpose electronics, consumer devices
Metal Film Resistors	High precision ( 0.1% tolerance), low temperature coefficient	Medical instruments, test equipment
Wirewound Resistors	High power handling (up to 50W), accurate resistance values	Power supplies, industrial machinery
Ceramic Composition Resistors	High surge current resistance	Power line filters, lighting ballasts
Fusible Resistors	Acts as both resistor and fuse	Overcurrent 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

Parameter	Typical Range	Importance
Resistance Value	1 to 100M	Determines current/voltage control
Power Rating	1/8W to 50W	Defines maximum power dissipation
Tolerance	0.01% to 5%	Indicates resistance accuracy
Temperature Coefficient	5ppm/ C to 300ppm/ C	Measures stability over temperature
Voltage Rating	200V to 1000V	Prevents 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

Manufacturer	Key Products
Vishay Precision Group	Y1485 series ( 0.005% tolerance wirewound)
Yageo Corporation	MF-RC series (metal film, 1/4W to 2W)
Panasonic Electronic Components	EVR series (ceramic composition, 250V rating)
Bourns Inc.	CR2800 series (fusible resistors)

7. Selection Guidelines

Key considerations:

Determine required power dissipation (select 2x calculated wattage)
Match tolerance to application needs (e.g., 0.1% for audio amplifiers)
Verify temperature coefficient for operating environment
Consider voltage ratings for high-voltage circuits
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.