Barrel - Power Cables

Image Part Number Description / PDF Quantity Rfq
172-4001

172-4001

MPD (Memory Protection Devices)

PLUG DC MOLDED 24AWG RA 2.1MM 6'

602400

172-4207

172-4207

MPD (Memory Protection Devices)

PLUG DC MOLDED 18AWG RA 2.1MM 2'

0

172-4201

172-4201

MPD (Memory Protection Devices)

PLUG DC MOLDED 18AWG 2.5MM 6'

323500

172-0015

172-0015

MPD (Memory Protection Devices)

PLUG DC MOLD 24AWG STR 2.1MM 6'

0

172-1018

172-1018

MPD (Memory Protection Devices)

PLUG DC MOLD 22 AWG RA 2.5MM 10'

158100

172-4208

172-4208

MPD (Memory Protection Devices)

PLUG DC MOLDED 18AWG RA 2.5MM 2'

22063100

172-4204

172-4204

MPD (Memory Protection Devices)

PLUG DC MOLDED 22AWG 2.1MM 3'

55452000

172-4101

172-4101

MPD (Memory Protection Devices)

PLUG DC MOLD 22AWG STR 2.1MM 6'

0

172-0014

172-0014

MPD (Memory Protection Devices)

PLUG DC MOLD 24AWG STR 2.5MM 6'

300300

172-4205

172-4205

MPD (Memory Protection Devices)

PLUG DC MOLDED 24AWG 2.5MM 3'

0

172-4000

172-4000

MPD (Memory Protection Devices)

PLUG DC MOLD 22 AWG RA 2.5MM 6'

12833500

172-4202

172-4202

MPD (Memory Protection Devices)

PLUG DC MOLDED 18AWG 2.5MM 2'

21026900

172-1017

172-1017

MPD (Memory Protection Devices)

PLUG DC MOLD 24AWG RA 2.5MM 6"

0

Barrel - Power Cables

1. Overview

Barrel power cables are cylindrical connectors primarily used for delivering DC power to electronic devices. Featuring a concentric conducting surface design, they provide reliable electrical connections while maintaining mechanical stability. These cables play a critical role in modern electronics by enabling efficient power transmission for consumer, industrial, and specialized equipment.

2. Main Types & Functional Classification

TypeFunctional FeaturesApplication Examples
Standard BarrelBasic DC power delivery, 2.1-5.5mm diameter variationsLaptops, routers, consumer electronics
High-Current BarrelEnhanced contact area for >5A applicationsIndustrial machinery, 3D printers
Locking BarrelMechanical locking mechanism for vibration resistanceMedical equipment, aerospace systems
Waterproof BarrelIP67-rated sealing for outdoor/harsh environmentsOutdoor LED displays, construction equipment

3. Structure & Composition

Typical construction includes: - Central copper conductor (4-18 AWG) with tin/silver plating - High-density polyethylene (HDPE) insulation layer - Braided shielding (aluminum/mylar) for EMI protection - Durable PVC/TPU outer jacket - Precision-machined brass contacts with gold/nickel plating The barrel shell maintains concentricity within 0.02mm tolerance.

4. Key Technical Specifications

ParameterValue RangeSignificance
Voltage Rating12-48V DCDetermines power delivery capacity
Current Capacity1-15AAffects thermal performance
Contact Resistance 5m Impacts power efficiency
Temperature Range-40 C to +105 CDefines operational limits
Durability5,000-10,000 mating cyclesDetermines service life

5. Application Fields

Major application areas include: - Consumer Electronics: Notebook adapters, gaming consoles - Industrial Automation: CNC machines, robotics - Medical Devices: Diagnostic equipment, infusion pumps - Telecommunications: Network routers, base stations - Automotive: EV charging systems, infotainment units

6. Leading Manufacturers & Products

ManufacturerRepresentative ProductKey Features
AmphenolDCB Series15A rating, military-grade durability
TE ConnectivityPower Barrel 703Hybrid power/data transmission
MolexMini-Fit Jr.Compact 4.0mm design
Bel FusePWR-BLKIntegrated fuse protection

7. Selection Guidelines

Key selection criteria: - Match voltage/current requirements with safety margins - Consider environmental factors (temperature, moisture) - Verify mechanical compatibility (diameter/plug depth) - Assess EMI shielding needs - Prioritize connectors with IP ratings for harsh environments - Confirm compliance with RoHS, REACH, and UL standards

8. Industry Trends

Emerging trends include: - Miniaturization (sub-3mm barrel diameters) - Increased power density (>20A capabilities) - Integration of smart power management - Adoption of eco-friendly halogen-free materials - Standardization of quick-lock mechanisms

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