Terminals - Barrel, Bullet Connectors

Part Number	Description / PDF	Quantity
61276-2 TE Connectivity AMP Connectors	CONN TERM RCPT FLAG 20-24AWG	12544
42865-1 TE Connectivity AMP Connectors	CONN TERM PIN 10-14AWG CRIMP	13895
60799-4 TE Connectivity AMP Connectors	CONN TERM RCPT 14-18AWG CRIMP	17815
1742039-1 TE Connectivity AMP Connectors	CONN TERM PIN 10-14AWG CRIMP	5164
60798-6 TE Connectivity AMP Connectors	CONN TERM RCPT 14-18AWG CRIMP	0
62416-1 TE Connectivity AMP Connectors	CONN TERM PIN 20-24AWG CRIMP	9481
40652 TE Connectivity AMP Connectors	CONN TERM RCPT 18-20AWG CRIMP	0
42749-1 TE Connectivity AMP Connectors	CONN TERM RCPT R/A 16-20AWG	0
60885-2 TE Connectivity AMP Connectors	CONN TERM RCPT 20-24AWG CRIMP	0
60354-7 TE Connectivity AMP Connectors	CONN TERM RCPT 26-28AWG CRIMP	0
170002-7 TE Connectivity AMP Connectors	CONN TERM PIN 14-20AWG CRIMP	0
61119-1 TE Connectivity AMP Connectors	CONN TERM RCPT FLAG 20-24AWG	0
61412-2 TE Connectivity AMP Connectors	CONN TERM RCPT 14-18AWG CRIMP	17600
61260-1 TE Connectivity AMP Connectors	CONN TERM RCPT 18-22AWG CRIMP	1958
1217070-1 TE Connectivity AMP Connectors	CONN TERM RCPT 8-12AWG CRIMP	6944
60983-4 TE Connectivity AMP Connectors	CONN TERM RCPT 22-26AWG CRIMP	3220
61513-1 TE Connectivity AMP Connectors	CONN TERM RCPT FLAG 22-26AWG	7350
1-150656-1 TE Connectivity AMP Connectors	CONN TERM RCPT FLAG 16-20AWG	7749
60983-2 TE Connectivity AMP Connectors	CONN TERM RCPT 22-26AWG CRIMP	9315
42865-3 TE Connectivity AMP Connectors	CONN TERM PIN 10-14AWG CRIMP	502

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

Type	Functional Characteristics	Application Examples
Barrel Connectors	Coaxial design with center pin and outer sleeve	AC/DC power adapters, audio equipment
Bullet Connectors	Single-contact cylindrical design	EV charging systems, RC drones, battery packs
Locking Barrel	Threaded or snap-lock mechanism	Industrial machinery, medical devices
High-Current Bullet	Gold-plated contacts for minimal resistance	Electric 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

Parameter	Significance
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

Manufacturer	Representative Product
Amphenol	PowerGuard High-Current Barrel Connectors
TE Connectivity	Mini-Fit Jr. Bullet Connectors
Molex	MX150L High-Temperature Connectors
Delphi	Evolution 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.