SANYO Semiconductor Co., Ltd.

Discrete Devices

Are you troubled in how to protect against ESD or EMI? SANYO Provides Solution for You!

Protection Devices against ESD: Low ESD capacitance (1pF) protection (≥20kV)

Features

  • High ESD immunity.
    IEC61000-4-2 contact discharge
    • 1pF device for ≥20kV
      (Realized ultra low capacity and high ESD by the adoption of the special process.)
    • 10pF device for ≥13kV
    • 30pF device for ≥30kV (VESD max product)
  • Small and composite type, helps reduce parts count.
    Number of diodes
    • 10pF: 2 or 4
    • 30pF: 4 or 5
  • Small package.
  • Low capacitance, best suited for signal lines.

Market

Cell phone, DSC, PC, monitor camera, etc.

Applications

Keypad, touch panel, One-seg Ant., Differential signal line (USB2.0 HDMI)

Connect the device before the part you want to protect (between transmission line and GND)

SANYO Protection devices against ESD's, structure are Si-based. Compared with varistors, they have the following features:

Function Merits
  • Low peak voltage
  • Fast ESD absorption
  • Low clamp voltage
Product Merits
  • Composite type
    • Reduced parts count
    • Reduced mount area
    • Common GND
Absorption waveform comparison (Varistor vs. Protection devices against ESD)

Measuring method: IEC61000-4-2 contact discharge, 1kV applied

Protection devices against ESD's peak voltage is low, so the protection operates even at low voltage (to hundred V)

* Varistor's peak voltage is high, so the protection does not operate at low voltage.

* ESD (Electro-Static Discharge)

Protection Devices against EMI: The merits of making EMI filter with semiconductor:

Features

  • 1 device can solve both ESD and EMI problems.
    (there is no need of taking measures against ESD & EMI separately)
  • Abundant lineup according to cutoff frequency.

Market

Cell phone, DSC, PC, monitor camera, etc.

Applications

Keypad, SIM card, SD card, etc.

1.Space-saving

Multiple EMI filters can be integrated.

2.Protecting function against ESD

Protecting function against ESD due to the diode capacitance.

Support various usages by changing the frequency region!

* EMI: Electro Magnetic Interference

Noise Clamping Devices: Prevents abnormal signals entering IC and helps decrease USB transmission errors.

Features

  • Overshoot and undershoot clamping can be made by 1 device.
  • Low capacitance, usable for high-speed signal line.
  • VS003E4 can protect 2 lines.

Market

Cell phone, PC printer, etc.

Applications

USB Full Speed / High Speed

In case of VS003E4

Connect noise clamping device between USB signal line and GND.

USB eye pattern noise clamp

For 3.3 to 0V differential signal lines, also usable for the parts other than USB.

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