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Inductor testing machine

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  • DWX-300LI3a, DWX-01LI3a

Insulation Tester LI Series

DWX-300LI3a, DWX-01LI3a

High-Speed Testing for Ultra-Low-Inductance Coils!
Apply 180 V or more to 100 nH and test at 10 ms per pulse!

Impulse voltage can be applied to the coils of chip power inductors to perform insulation testing between windings (surge testing).

For Evaluation Testing:　Suitable for detailed evaluation testing of coil components.
For High-Speed Inspection Equipment:　Test time: 10 ms without judgment and 18 ms with judgment.
※ (Fastest conditions: air-core coil, one impulse, no judgment, and no screen display)

Power Inductor DWX300 Image

Features

  • A model specialized for insulation testing inside the coils of metal-type chip power inductors.
  • The 4-terminal test circuit enables sufficient high-voltage application to ultra-low-inductance coils.
    For a 100 nH coil, a voltage of 180 V or higher (displayed value) can be applied.
  • The 12-bit voltage resolution and 300 MHz waveform sampling enable detailed response waveforms to be displayed.
  • This single unit is equipped with three functions: “High-Speed Mode,” ideal for high-speed inspection equipment and coil internal insulation testing; “Test Mode,” for pass/fail judgment; and “Breakdown Test Mode,” for detailed evaluation.
  • With one pulse applied without judgment, the minimum test time is 10 ms, enabling high-speed operation suitable for use on mass-production lines.

Overview

[Maximum Applied Voltage Range (Target Values) Graph]

[Options]

●Manual Fixture
  • DWX-01LI-OP1
  • DWX-01LI-OP2A-M

● Various Test Cables
・4-terminal box-type cable ・SMA cable for handler equipment ・BNC cable for handler equipment
Please contact us for details.

Specifications

 DWX-300LI3a DWX-01LI3a
Inductance Range L-LO: 0.01μH～1μH 　L-HI: 1μH～100μH　　Two-Range Switching
Test Voltage Range 1V～300V 3V～1000V
Voltage Setting Resolution 0.1V step 0.3V step
Minimum Measurement Voltage Resolution 0.2V/dgt 1.0V/dgt
Maximum Applied Voltage (Approx.) See the “Maximum Applied Voltage Range (Target Values)” Graph
Maximum Output Voltage (No Load) L-LO: 5000V L-HI: 2500V Two-Range Switching
Waveform Sampling Resolution 300MHz・3.333nsec 12bit
Sampling Range (Width) 7 Ranges, Manual Switching
Number of Applied Pulses (Pulse) PreCheck: 1 Pulse　Test Pulses: 16 Pulses
Minimum Test Time (1 Pulse, No Screen Display) High-Speed Mode: With judgment: 18 ms　Without judgment: 10 ms
Tester Mode: With screen display: 108 ms　Without screen display: 53 ms
Judgment Items / Output Signal (When the option is installed) [Standard Judgment Items]
• Test judgment: OK / NG
• Area: NG
• Waveform Difference Area (Dif Area): NG
• Peak Voltage Variation (PeakStb): NG
• Laplacian: NG
• Attenuation Rate (Qatt): NG
• Contact Check (PreCheck): CE

[Option: Individual I/O Output for Each Judgment Item]
For each of the above judgment items (Area, Dif Area, PeakStb, Laplacian, and Qatt), the judgment result (NG) can be individually output to external equipment as an I/O signal.
Test Circuit 4-Terminal
Test Cable Length Range Recommended: 1.6 m
Additional Functions Master waveform storage capacity: 196 models; expandable via CF memory card; external control via RS-232C and I/O; test result log storage and screen hard-copy storage
External I/O Control Signals Application Trigger (Trig), Application End (Index), etc.
Supports high-speed interface timing for inspection handlers.
External Dimensions
(excluding the carry handle)		 345(W)×185(H)×360(D)
Power Supply Voltage AC100/115/220/240 ±5% (Factory Setting at Shipment)
Options Test Cables / Various Fixtures / Individual I/O Output for Each Judgment Item

DWX-300LI3a

  • Inductance Range
    L-LO: 0.01μH～1μH 　L-HI: 1μH～100μH　　Two-Range Switching
  • Test Voltage Range
    1V～300V
  • Voltage Setting Resolution
    0.1V step
  • Minimum Measurement Voltage Resolution
    0.2V/dgt
  • Maximum Applied Voltage (Approx.)
    See the “Maximum Applied Voltage Range (Target Values)” Graph
  • Maximum Output Voltage (No Load)
    L-LO: 5000V L-HI: 2500V Two-Range Switching
  • Waveform Sampling Resolution
    300MHz・3.333nsec 12bit
  • Sampling Range (Width)
    7 Ranges, Manual Switching
  • Number of Applied Pulses (Pulse)
    PreCheck: 1 Pulse　Test Pulses: 16 Pulses
  • Minimum Test Time (1 Pulse, No Screen Display)
    High-Speed Mode: With judgment: 18 ms　Without judgment: 10 ms
    Tester Mode: With screen display: 108 ms　Without screen display: 53 ms
  • Judgment Items / Output Signal (When the option is installed)
    [Standard Judgment Items]
    • Test judgment: OK / NG
    • Area: NG
    • Waveform Difference Area (Dif Area): NG
    • Peak Voltage Variation (PeakStb): NG
    • Laplacian: NG
    • Attenuation Rate (Qatt): NG
    • Contact Check (PreCheck): CE

    [Option: Individual I/O Output for Each Judgment Item]
    For each of the above judgment items (Area, Dif Area, PeakStb, Laplacian, and Qatt), the judgment result (NG) can be individually output to external equipment as an I/O signal.
  • Test Circuit
    4-Terminal
  • Test Cable Length Range
    Recommended: 1.6 m
  • Additional Functions
    Master waveform storage capacity: 196 models; expandable via CF memory card; external control via RS-232C and I/O; test result log storage and screen hard-copy storage
  • External I/O Control Signals
    Application Trigger (Trig), Application End (Index), etc.
    Supports high-speed interface timing for inspection handlers.
  • External Dimensions
    (excluding the carry handle)
    345(W)×185(H)×360(D)
  • Power Supply Voltage
    AC100/115/220/240 ±5% (Factory Setting at Shipment)
  • Options
    Test Cables / Various Fixtures / Individual I/O Output for Each Judgment Item

DWX-01LI3a

  • Inductance Range
    L-LO: 0.01μH～1μH 　L-HI: 1μH～100μH　　Two-Range Switching
  • Test Voltage Range
    3V～1000V
  • Voltage Setting Resolution
    0.3V step
  • Minimum Measurement Voltage Resolution
    1.0V/dgt
  • Maximum Applied Voltage (Approx.)
    See the “Maximum Applied Voltage Range (Target Values)” Graph
  • Maximum Output Voltage (No Load)
    L-LO: 5000V L-HI: 2500V Two-Range Switching
  • Waveform Sampling Resolution
    300MHz・3.333nsec 12bit
  • Sampling Range (Width)
    7 Ranges, Manual Switching
  • Number of Applied Pulses (Pulse)
    PreCheck: 1 Pulse　Test Pulses: 16 Pulses
  • Minimum Test Time (1 Pulse, No Screen Display)
    High-Speed Mode: With judgment: 18 ms　Without judgment: 10 ms
    Tester Mode: With screen display: 108 ms　Without screen display: 53 ms
  • Judgment Items / Output Signal (When the option is installed)
    [Standard Judgment Items]
    • Test judgment: OK / NG
    • Area: NG
    • Waveform Difference Area (Dif Area): NG
    • Peak Voltage Variation (PeakStb): NG
    • Laplacian: NG
    • Attenuation Rate (Qatt): NG
    • Contact Check (PreCheck): CE

    [Option: Individual I/O Output for Each Judgment Item]
    For each of the above judgment items (Area, Dif Area, PeakStb, Laplacian, and Qatt), the judgment result (NG) can be individually output to external equipment as an I/O signal.
  • Test Circuit
    4-Terminal
  • Test Cable Length Range
    Recommended: 1.6 m
  • Additional Functions
    Master waveform storage capacity: 196 models; expandable via CF memory card; external control via RS-232C and I/O; test result log storage and screen hard-copy storage
  • External I/O Control Signals
    Application Trigger (Trig), Application End (Index), etc.
    Supports high-speed interface timing for inspection handlers.
  • External Dimensions
    (excluding the carry handle)
    345(W)×185(H)×360(D)
  • Power Supply Voltage
    AC100/115/220/240 ±5% (Factory Setting at Shipment)
  • Options
    Test Cables / Various Fixtures / Individual I/O Output for Each Judgment Item
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