Test Clips - Alligator, Crocodile, Heavy Duty

Image Part Number Description / PDF Quantity Rfq
JP-33674-N

JP-33674-N

Mueller Electric Co.

TELECOM CLIP SILVER NON-INSUL

271

CTM-33674

CTM-33674

Cal Test Electronics

TELECOM CLIP SILVER NON-INSUL

0

931272101

931272101

Altech Corporation

ALLIGATOR CLIP AGF2 RED 4MM SOCK

45

930126103

930126103

Altech Corporation

ALLIGATOR CLIP AK 10 YEL 4MM SOC

0

930317806

930317806

Altech Corporation

ALLIGATOR CLIP MA 1 GRY 2MM SOCK

0

CT3164-6

CT3164-6

Cal Test Electronics

GATOR CLIP BRASS INSULATED 6A

0

CTM-70S

CTM-70S

Cal Test Electronics

GATOR CLIP STEEL NON-INSUL 5A

0

126005R

126005R

TPI (Test Products International)

GATOR CLIP NON-INSULATED

0

CTM-27CG

CTM-27CG

Cal Test Electronics

GEOPHONE CLP COPPR NON-INSUL 40A

0

CT3189-9

CT3189-9

Cal Test Electronics

GATOR CLIP BRASS INSULATED 20A

0

010010

010010

Mueller Electric Co.

GATOR CLIP COPPER INSULATED 20A

0

CTM-21CPS

CTM-21CPS

Cal Test Electronics

GATOR CLIP COPPER NON-INSUL 100A

0

CTM-651-0

CTM-651-0

Cal Test Electronics

GATOR CLIP STEEL INSULATED 20A

0

CTM-60HPR-2

CTM-60HPR-2

Cal Test Electronics

GATOR CLIP STEEL INSUL 10A

0

972405103

972405103

Altech Corporation

GATOR CLIP BRASS 32A

0

931272100

931272100

Altech Corporation

ALLIGATOR CLIP AGF2 BLK 4MM SOCK

45

A140

A140

TPI (Test Products International)

GATOR CLIP INSULATED 10MA

158

BU-21XPN

BU-21XPN

Mueller Electric Co.

HD CLIP SS NON-INSUL 50A

33634

CTM-41C-2

CTM-41C-2

Cal Test Electronics

BATTERY CLIP COPPER INSUL 400A

0

CT3169

CT3169

Cal Test Electronics

GATOR CLIP BRASS INSUL 20A PAIR

0

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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