Test Clips - Alligator, Crocodile, Heavy Duty

Image Part Number Description / PDF Quantity Rfq
CT3441-0

CT3441-0

Cal Test Electronics

GATOR CLIP BRASS INSULATED 36A

5

72-188-5

72-188-5

NTE Electronics, Inc.

ALLIGATOR CLIP INS 10A GN

2313

A032BL

A032BL

TPI (Test Products International)

GATOR CLIP INSULATED 10A

0

BU-109-5

BU-109-5

Mueller Electric Co.

GATOR CLIP STEEL INSULATED 10A

33672

72-163-KIT3

72-163-KIT3

NTE Electronics, Inc.

CLIP + INSULATOR KIT

6

72-094

72-094

NTE Electronics, Inc.

SMALL CHARGER CLIP BLACK

114

JP-33674-J

JP-33674-J

Mueller Electric Co.

TELECOM CLIP SILVER NON-INSUL

0

72924-0

72924-0

Pomona Electronics

GATOR CLIP STEEL INSULATED 10A

113

72-095

72-095

NTE Electronics, Inc.

SMALL CHARGER CLIP RED

143

CT3147-6

CT3147-6

Cal Test Electronics

GATOR CLIP BRASS INSULATED 20A

0

72-150-0

72-150-0

NTE Electronics, Inc.

ALLIGATOR CLIP COPPER W/BLK INSU

1576

BU-65-6

BU-65-6

Mueller Electric Co.

GATOR CLIP STEEL INSULATED 30A

461501

010023

010023

Mueller Electric Co.

GATOR CLIP STEEL NON-INSUL 10A

0

5040

5040

Keystone Electronics Corp.

GATOR CLIP STEEL INSULATED

10192100

72-112-0

72-112-0

NTE Electronics, Inc.

HEAVY DUTY CLAMP BLACK

34

010017

010017

Mueller Electric Co.

GATOR CLIP STEEL NON-INSUL 5A

0

CT4409-0

CT4409-0

Cal Test Electronics

LG ALLIGATOR CLIP, 4MM SHTH J, C

22

72-148-KIT2

72-148-KIT2

NTE Electronics, Inc.

CLIP + INSULATOR KIT

7

A058B

A058B

TPI (Test Products International)

CROC CLIP INSULATED 20MA

0

BU-111-0

BU-111-0

Mueller Electric Co.

KELVIN CLIP BRASS INSULATED 50A

3481051

Test Clips - Alligator, Crocodile, Heavy Duty

1. Overview

Alligator, Crocodile, and Heavy Duty test clips are specialized electrical connectors used for temporary connections in testing and measurement applications. These clips enable secure attachment to conductors, components, or devices under test (DUTs) while ensuring electrical continuity and safety. Their importance spans across electronics manufacturing, automotive diagnostics, power systems, and research laboratories, where reliable signal transmission and high-current capacity are critical.

2. Main Types and Functional Classification

TypeFunctional FeaturesApplication Examples
Alligator ClipsLightweight, spring-loaded jaws with serrated edges for low-current (up to 1A) connectionsPCB testing, battery terminal connections, signal tracing
Crocodile ClipsMedium-duty design with wider jaws (2-10A capacity) and insulation sleevesAutomotive wiring diagnostics, power supply testing, electrochemistry
Heavy Duty ClipsHigh-current (10-100A) rated with reinforced jaws and heat-resistant materialsIndustrial motor testing, battery bank analysis, high-power electronics

3. Structure and Components

Typical construction includes: - **Jaw Assembly**: Made from phosphor bronze or beryllium copper with nickel/platinum plating - **Spring Mechanism**: Stainless steel springs for consistent clamping force - **Insulation Housing**: Thermoplastic elastomer (TPE) or polyvinyl chloride (PVC) sleeves - **Termination**: 4mm banana plug, BNC connector, or solder terminal options - **Contact Points**: Replaceable tungsten carbide tips for high-wear applications

4. Key Technical Specifications

ParameterTypical RangeImportance
Current Rating0.5A - 100ADetermines power handling capability
Voltage Rating30V - 1000VEnsures dielectric strength and safety
Wire Size CompatibilityAWG 10-28Affects connection reliability
Contact Resistance<5m Minimizes measurement errors
Operating Temperature-20 C to +125 CDefines environmental suitability

5. Application Fields

Key industries include: - **Electronics Manufacturing**: SMT reflow oven calibration, component testing - **Automotive**: ECU diagnostics, starter motor analysis, battery pack validation - **Energy Systems**: Solar inverter testing, wind turbine controller verification - **Research Labs**: Material resistance testing, prototype validation - **Aerospace**: Avionics harness continuity checks, fuel cell characterization

6. Leading Manufacturers and Products

ManufacturerRepresentative ProductKey Features
Keysight TechnologiesN285xA High-Current Clips150A rating with thermal protection
Fluke CorporationT80 Series Test LeadsCat IV 600V safety rating
TE ConnectivityMicroCrocodile Clips0.1A precision for medical device testing
Pomona Electronics6520A Heavy Duty ClipsCorrosion-resistant marine-grade plating

7. Selection Guidelines

Key consideration factors: - Match current/voltage ratings to application requirements - Verify jaw opening size for DUT geometry compatibility - Choose appropriate insulation level for working voltage - Consider tip material for contact resistance stability - Evaluate environmental requirements (temperature, humidity) - Prioritize safety certifications (IEC 61010, UL 61010)

Example: For 12V automotive battery testing, select Crocodile clips with minimum 10A rating, 20mm jaw opening, and PVC insulation.

8. Industry Trends

Current development directions include: - Integration with smart test systems via IoT connectivity - Adoption of carbon fiber reinforced polymer (CFRP) materials for weight reduction - Enhanced EMI shielding for high-frequency measurement applications - Standardization of color-coded insulation for improved safety - Development of self-cleaning contact surfaces using nanocoatings

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