14D471K Metal Oxide Varistor – 470V, 14mm Transient Voltage Protection

The 14D471K is a voltage-dependent metal oxide varistor (MOV) used in protection circuits to limit transient voltage spikes. Its resistance remains high under normal operating conditions and decreases during an overvoltage transient, helping absorb pulse energy and reduce its effect on circuit components within the device’s rated limits.

The component features a blue disc body and two radial leads for through-hole PCB mounting. It is suitable for compatible power supply protection circuits and electronic repairs, provided its electrical ratings and dimensions match the application.

Specifications:

• Model: 14D471K.
• Component type: Metal Oxide Varistor (MOV).
• Nominal varistor voltage: 470V at a 1mA test current.
• Voltage tolerance: ±10%, corresponding to 423–517V at the test current.
• Typical maximum continuous AC voltage rating: 300VAC RMS.
• Typical maximum continuous DC voltage rating: 385VDC.
• Nominal disc diameter: 14mm; the coated body may be larger.
• Body style: Blue coated disc.
• Number of leads: Two.
• Mounting type: Through-hole.
• Polarity: Non-polarized.

Features:

• Helps limit transient voltage spikes affecting circuit components.
• Fast response to brief overvoltage events.
• Bidirectional operation for suitable AC and DC applications.
• Radial leads for PCB mounting and soldering.
• Suitable for replacement when voltage, surge ratings, and dimensions match.

Applications:

• Input protection circuits in compatible power supplies and chargers.
• Electrical appliance and electronic circuit boards.
• Suppression of switching-induced voltage transients.
• Repairs requiring a varistor with matching specifications.

Usage Notes:

• The 470V value is the varistor voltage at the specified test current, not its continuous AC operating voltage.
• Selection must consider operating voltage, expected transient energy, and protection circuit design.
• Check the original component’s specifications when selecting a replacement.

Weight:

1.8 g .