Terminals - Solder Lug Connectors

Image Part Number Description / PDF Quantity Rfq
7327

7327

Keystone Electronics Corp.

CONN TERM LUG RING #8 FLAT

340110700

7314

7314

Keystone Electronics Corp.

CONN TERM LUG LOCKWASHR #4 ANGLE

9531500

916

916

Keystone Electronics Corp.

CONN TERM LUG LOCKWASHER #6 FLAT

33766000

905

905

Keystone Electronics Corp.

CONN TERM LUG LOCKWASHER #8 FLAT

450722700

4001

4001

Keystone Electronics Corp.

CONN TERM LUG RING TH

32643700

7312

7312

Keystone Electronics Corp.

CONN TERM LUG LOCKWASHR #6 ANGLE

2147483647

7319

7319

Keystone Electronics Corp.

CONN TERM LUG LOCKWASHR #8 ANGLE

785234900

918

918

Keystone Electronics Corp.

CONN TERM LUG LOCKWASHER #6 FLAT

630828700

910

910

Keystone Electronics Corp.

CONN TERM LUG LOCKWASHER #4 FLAT

339239700

534-918

534-918

TubeDepot

SOLDER TAB W LOCK WASHER SIZE 6

637

7311

7311

Keystone Electronics Corp.

CONN TERM LUG LOCKWASHR #4 ANGLE

2147483647

7315

7315

Keystone Electronics Corp.

CONN TERM LUG LOCKWASHR #6 ANGLE

314

908

908

Keystone Electronics Corp.

CONN TERM LUG LOCKWASHER #4 FLAT

2147483647

907

907

Keystone Electronics Corp.

CONN TERM LUG LOCKWASHER FLAT

2147483647

534-906

534-906

TubeDepot

SOLDER TAB W LOCK WASHER SIZE 8

159

7330

7330

Keystone Electronics Corp.

CONN TERM LUG RING #8 FLAT

2147483647

7316

7316

Keystone Electronics Corp.

CONN TERM LUG LOCKWASHR #8 ANGLE

5929800

7332

7332

Keystone Electronics Corp.

CONN TERM LUG RING #6 FLAT

285845900

915

915

Keystone Electronics Corp.

CONN TERM LUG LOCKWASHER #8 FLAT

1110723700

4004

4004

Keystone Electronics Corp.

CONN TERM LUG RING FLAT

1382572500

Terminals - Solder Lug Connectors

1. Overview

Solder lug connectors are electrical components designed to establish permanent connections between wires/cables and conductive surfaces through soldering processes. These connectors feature a barrel-shaped termination area for wire insertion and a flat mounting surface with holes for mechanical fixation. Their importance lies in providing reliable electrical continuity and mechanical stability in power distribution systems, control circuits, and electronic assemblies across various industries.

2. Major Types & Functional Classification

TypeFeaturesApplications
Ring Terminal360 closed loop designAutomotive ground connections
Fork TerminalOpen loop for bolted connectionsIndustrial control panels
Spade TerminalQuick-disconnect flat interfaceConsumer electronics
Right-Angle Terminal90 bent structureSpace-constrained enclosures
Multi-hole TerminalMultiple mounting pointsHigh-vibration environments

3. Structure & Composition

Typical construction includes: - Conductive base (copper/tin-plated copper) - Insulated transition zone (thermoplastic material) - Solder barrel (annealed copper alloy) - Mounting flange with M2-M8 threaded holes - Corrosion-resistant plating (nickel/silver/zinc)

4. Key Technical Specifications

ParameterValue RangeSignificance
Current Rating10-300ADetermines power capacity
Voltage Rating300-1000VDefines insulation requirements
Contact Resistance 0.5m Impacts energy efficiency
Temperature Range-55 C to +150 CEnvironmental durability
Wire Gauge Range26AWG to 4/0AWGCompatibility with conductors

5. Application Areas

Primary industries include: - Automotive (battery terminals, alternator connections) - Renewable energy (solar inverters, wind turbines) - Industrial automation (PLC cabinets, motor controls) - Telecommunications (base station power systems) - Consumer electronics (power supply units, audio equipment)

6. Leading Manufacturers & Products

ManufacturerProduct SeriesKey Features
TE ConnectivityDeutsch DT SeriesHigh-vibration resistance
Phoenix ContactST 16-250250mm wire capacity
AmphenolIndustrial 400 SeriesIP67 rated housing
YazakiY-Connect SeriesAutomotive OEM standard

7. Selection Guidelines

Key considerations: - Match wire gauge to terminal barrel diameter - Verify current/voltage requirements with safety margins - Environmental factors (humidity, temperature extremes) - Mechanical stress requirements (vibration, torque) - Regulatory compliance (RoHS, UL, ISO standards)

8. Industry Trends Analysis

Current development directions: - Miniaturization with high-current density designs - Integration of smart monitoring capabilities - Adoption of eco-friendly plating materials - Enhanced thermal management solutions - Standardization for cross-industry compatibility

Application Case: EV Battery Connection

Modern electric vehicles employ multi-layer solder lug connectors with integrated thermal fuses to handle 400A+ currents while maintaining ISO 26262 functional safety compliance. The connectors feature anti-creepage distances and vibration-damping coatings for automotive powertrains.

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