Terminals - Barrel, Bullet Connectors

Image Part Number Description / PDF Quantity Rfq
1217524-2

1217524-2

TE Connectivity AMP Connectors

CONN TERM PIN 22-28AWG PCB

0

827702-2

827702-2

TE Connectivity AMP Connectors

CONN TERM RCPT 18-28AWG SOLDER

0

0190380053

0190380053

Woodhead - Molex

CONN TERM RCPT 14-16AWG CRIMP

0

0197244402

0197244402

Woodhead - Molex

CONN TERM PIN 14-18AWG CRIMP

0

MNU14-156DFIK

MNU14-156DFIK

3M

CONN TERM RCPT 14-16AWG CRIMP

0

171236-1

171236-1

TE Connectivity AMP Connectors

CONN TERM PIN PCB

0

42530-2

42530-2

TE Connectivity AMP Connectors

CONN TERM RCPT CRIMP

0

553015-1

553015-1

TE Connectivity AMP Connectors

CONN TERM PIN 26-28AWG CRIMP

0

94844

94844

3M

CONN TERM PIN 14-16AWG CRIMP

0

0357408610

0357408610

Woodhead - Molex

CONN TERM PIN 22-26AWG CRIMP

0

63822-1

63822-1

TE Connectivity AMP Connectors

CONN TERM PIN 16-20AWG CRIMP

0

3-1377174-1

3-1377174-1

TE Connectivity AMP Connectors

CONN TERM RCPT 14-16AWG CRIMP

0

60885-1

60885-1

TE Connectivity AMP Connectors

CONN TERM RCPT 20-24AWG CRIMP

0

0357306810

0357306810

Woodhead - Molex

CONN TERM PIN 20-26AWG CRIMP

0

0980121202

0980121202

Woodhead - Molex

CONN TERM RCPT 1.5 - 2.5MM CRIMP

0

0190380047

0190380047

Woodhead - Molex

CONN TERM RCPT 18-22AWG CRIMP

0

0197234102

0197234102

Woodhead - Molex

CONN TERM RCPT 14-18AWG 7M/REEL

0

0197244102

0197244102

Woodhead - Molex

CONN TERM PIN 14-18AWG CRIMP

0

61547-2

61547-2

TE Connectivity AMP Connectors

CONN TERM RCPT 26-32AWG CRIMP

0

141451-1

141451-1

TE Connectivity AMP Connectors

CONN TERM RCPT 14-16AWG CRIMP

0

Terminals - Barrel, Bullet Connectors

1. Overview

Barrel and Bullet connectors are cylindrical electrical connectors primarily used for power transmission and signal routing. Barrel connectors typically feature a concentric conducting surface separated by insulation, while Bullet connectors use a single-pin design with high-conductivity materials. These connectors play critical roles in consumer electronics, industrial equipment, and automotive systems due to their reliability and compact design.

2. Main Types and Functional Classification

TypeFunctional CharacteristicsApplication Examples
Barrel ConnectorsCoaxial design with center pin and outer sleeveAC/DC power adapters, audio equipment
Bullet ConnectorsSingle-contact cylindrical designEV charging systems, RC drones, battery packs
Locking BarrelThreaded or snap-lock mechanismIndustrial machinery, medical devices
High-Current BulletGold-plated contacts for minimal resistanceElectric vehicles, robotics

3. Structure and Composition

Barrel connectors typically consist of three main components: 1) Center contact pin (phosphor bronze with gold plating), 2) Insulating dielectric (polyamide or PBT), 3) Outer conductive sleeve (nickel-plated brass). Bullet connectors feature a precision-machined single contact element with spring-loaded retention mechanisms. Both types utilize thermoplastic housings for strain relief and environmental protection.

4. Key Technical Specifications

ParameterSignificance
Current Rating (3-30A)Determines power transmission capacity
Voltage Range (12-600V)Defines operational safety limits
Contact Resistance (<2m )Affects thermal performance
Insulation Resistance (>100M )Ensures dielectric integrity
Mating Cycles (500-10,000)Indicates mechanical durability

5. Application Fields

  • Consumer Electronics: Laptop power supplies, audio interfaces
  • Industrial: CNC machine tooling, automated test equipment
  • Automotive: Battery management systems, charging stations
  • Renewable Energy: Solar inverters, wind turbine controllers

6. Leading Manufacturers and Products

ManufacturerRepresentative Product
AmphenolPowerGuard High-Current Barrel Connectors
TE ConnectivityMini-Fit Jr. Bullet Connectors
MolexMX150L High-Temperature Connectors
DelphiEvolution Series Automotive Connectors

7. Selection Recommendations

Key considerations include: 1) Current requirements (use 20% derating factor), 2) Environmental conditions (temperature range, IP rating), 3) Mechanical constraints (space limitations, mating force). For medical applications, specify Agilent-grade insulation materials. For outdoor EV charging stations, prioritize IP67-rated waterproof designs. Always verify compatibility with cable gauge specifications.

8. Industry Trends

Key developments include: miniaturization (sub-2mm diameters), hybrid connectors combining power/signal transmission, smart connectors with integrated sensors, and eco-friendly manufacturing processes reducing RoHS compliance risks. The global market is projected to grow at 6.8% CAGR through 2030, driven by EV and IoT device adoption.

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