Test Clips - Grabbers, Hooks

Image Part Number Description / PDF Quantity Rfq
240-137

240-137

Digilent, Inc.

MINI GRABBER TEST CLIPS WITH LEA

94

Test Clips - Grabbers, Hooks

1. Overview

Test Clips - Grabbers and Hooks are specialized electrical connectors designed for temporary circuit connections during testing, measurement, and troubleshooting. These components play a critical role in ensuring signal integrity, safety, and efficiency in electronic and electrical systems. Their importance spans across R&D, quality assurance, and field service applications where reliable connectivity is essential.

2. Main Types and Functional Classification

TypeFunctional FeaturesApplication Examples
Alligator ClipsSpring-loaded jaws with serrated edges for secure gripBattery testing, automotive diagnostics
Hook ClipsOpen-hook design for easy attachment to terminalsPCB testing, relay circuit analysis
Mini GrabbersCompact jaws with fine contact pointsSMT component testing, aerospace electronics
High-Current ClipsLarge contact area with reinforced structurePower supply testing, industrial machinery diagnostics
Insulated Test Hooks360 rotating head with color-coded insulationTelecom equipment maintenance, semiconductor testing

3. Structure and Components

Typical construction includes: - Conductive jaw (phosphor bronze or beryllium copper with gold/nickel plating) - Insulated handle (high-temperature resistant thermoplastic) - Mechanical linkage (precision-machined pivot system) - Connection interface (banana plug, BNC, or direct wire termination) - Spring mechanism (stainless steel for consistent clamping force)

4. Key Technical Specifications

ParameterValue RangeImportance
Current Rating1-20AEnsures safe high-power measurements
Voltage Isolation300-1000VPrevents electrical hazards
Contact Resistance1-10m Maintains signal accuracy
Operating Temperature-40 C to +150 CGuarantees performance stability
Dielectric Strength2-10kVProtects against insulation breakdown
Clamping Force0.5-5NPrevents accidental disconnection

5. Application Fields

  • Electronics Manufacturing: PCB assembly verification, component testing
  • Power Systems: Transformer diagnostics, switchgear maintenance
  • Telecommunications: Fiber optic equipment testing, RF circuit analysis
  • Automotive: ECU testing, battery management system validation
  • Research & Education: Lab experiments, prototype verification

6. Leading Manufacturers and Products

ManufacturerRepresentative ProductKey Feature
Fluke CorporationT81031 Hook ClipRotating head with 600V isolation
Keysight TechnologiesN287xA Series Grabber1GHz bandwidth capability
TE Connectivity314512-8 Test HookGold-plated beryllium copper contact
Pomona Electronics6503 Alligator ClipErgonomic dual-molded insulation
Hirose ElectricHR25 Series High-Current Clip15A rating with anti-sparking design

7. Selection Guidelines

Key considerations: - Match current/voltage ratings to application requirements - Verify insulation class for safety compliance - Check mechanical compatibility with test points - Evaluate contact material for signal integrity - Consider ergonomics for extended field use

Example: For automotive ECU testing, select IP67-rated clips with 1000V isolation and 5A capacity to ensure reliability in harsh environments.

8. Industry Trends

Emerging trends include: - Miniaturization for microelectronics integration - Smart clips with embedded sensors for real-time feedback - Eco-friendly materials with RoHS compliance - Increased demand for high-frequency capable clips (10GHz+) - Integration with automated test systems via IoT connectivity

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