Terminals - Barrel, Bullet Connectors

Image Part Number Description / PDF Quantity Rfq
0190330004

0190330004

Woodhead - Molex

CONN TERM PIN 14-16AWG CRIMP

0

82M-180-P-A

82M-180-P-A

3M

CONN TERM PIN 14-16AWG CRIMP

0

82M-180-A

82M-180-A

3M

CONN TERM PIN 14-16AWG CRIMP

0

0197234200

0197234200

Woodhead - Molex

CONN TERM RCPT 14-18AWG CRIMP

0

63989-1

63989-1

TE Connectivity AMP Connectors

CONN TERM PIN 10-14AWG CRIMP

0

0197234103

0197234103

Woodhead - Molex

CONN TERM RCPT 14-18AWG CRIMP

0

140670

140670

TE Connectivity AMP Connectors

CONN TERM PIN 14-18AWG CRIMP

0

42428-8

42428-8

TE Connectivity AMP Connectors

CONN TERM RCPT 20-24AWG CRIMP

0

0191641152

0191641152

Woodhead - Molex

PERM-SEAL NYL SNAP PLUG REC TAPE

0

170012-1

170012-1

TE Connectivity AMP Connectors

CONN TERM RCPT 16-20AWG CRIMP

0

0190390029

0190390029

Woodhead - Molex

CONN TERM RCPT 18-22AWG CRIMP

0

42531-3

42531-3

TE Connectivity AMP Connectors

CONN TERM RCPT 16-20AWG CRIMP

0

0191640807

0191640807

Woodhead - Molex

CONN TERM PIN 18-22AWG CRIMP

0

60804-3

60804-3

TE Connectivity AMP Connectors

CONN TERM RCPT 22-26AWG CRIMP

0

0191640039

0191640039

Woodhead - Molex

CONN TERM PIN 14-16AWG CRIMP

703

0190360018

0190360018

Woodhead - Molex

CONN TERM PIN 18-22AWG CRIMP

0

MVU14-156DMX-A-BOTTLE

MVU14-156DMX-A-BOTTLE

3M

CONN TERM PIN 14-16AWG 100PC

0

MVU14-180DMK-A

MVU14-180DMK-A

3M

CONN TERM PIN 14-16AWG CRIMP

0

150558-3

150558-3

TE Connectivity AMP Connectors

CONN TERM PIN 12-16AWG CRIMP

0

170021-1

170021-1

TE Connectivity AMP Connectors

CONN RECEPT 16-20 AWG SHUR-PLUG

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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