Product Overview
Vishay Cera-Mite 565R Series Y-Capacitor, 400 VAC Line-to-Ground, Through-Hole Disc, Unused NOS
Condition
Single unit available. Unused NOS sourced from an electronics distributor consolidating inventory. Orange epoxy body is clean and unmarked. Both leads are straight, uncut, and measure approximately 38mm total length. Face markings read 540-2 / 565-1 / Y400V / 18 EW1, consistent with Vishay Cera-Mite production codes. No damage, no rework, nothing out of the ordinary. Photos show the specific unit you will receive.
Ships same business day from Idaho. Packed carefully with ESD-appropriate protection.
Backed by our guarantee. Serving customers since 1999.
Product Overview
Vishay Cera-Mite 565R series ceramic disc safety capacitor, marked 565-1 Y400V. Rated for line-to-ground (Y-class) AC applications at 400 VAC. Designed for through-hole PCB mounting in EMI/RFI suppression and AC line filtering circuits. Y-class capacitors are engineered to fail open under fault conditions, which is the required failure mode for line-to-ground safety applications. Part of the 565R lower-voltage ceramic disc family used across switching power supplies, lighting ballasts, and industrial AC-powered equipment.
Key Features
- Series: Vishay Cera-Mite 565R
- Safety class: Y-type, line-to-ground rated
- AC voltage rating: 400 VAC
- Body: orange epoxy disc
- Lead style: radial, through-hole
- Lead length: approximately 38mm total (measured from photos)
- Leads: straight, uncut, undamaged
- Face marking: 540-2 / 565-1 / Y400V / 18 EW1
- Capacitance value: Not confirmed - verify against datasheet before use
- Dielectric class: Not confirmed - verify against datasheet before use
- Lead spacing: Not confirmed - measure against your PCB footprint before ordering
Applications
- Line-to-ground EMI/RFI suppression in AC-powered equipment
- Switching power supply (SMPS) input filtering
- Lighting ballast noise suppression
- Industrial control panels with AC line filtering requirements
- Bench repair and replacement of failed Y-capacitors in consumer electronics
- Makers building AC-line-connected circuits who need a safety-rated bypass cap across the line-to-ground position
Frequently Asked Questions
What is the capacitance value of this capacitor?
The capacitance value is not confirmed from the markings visible on this unit. The 565R series spans multiple capacitance values. Verify the capacitance against the Vishay Cera-Mite 565R datasheet using the full part number before ordering.
Is this capacitor safe to use directly across an AC power line?
Yes, within its rated limits. The Y400V marking confirms it is rated for line-to-ground (Y-class) applications at up to 400 VAC. Y-class capacitors are designed to fail open, which is the required behavior for safety-rated line-to-ground positions. Do not use it in line-to-line (X-class) positions.
What lead spacing does this capacitor have?
Lead spacing is not confirmed from photos or markings. Measure against your PCB footprint before ordering. The 565R series is available in multiple lead pitch configurations.
Is it suitable for reflow soldering?
No. Through-hole ceramic disc capacitors of this type are not designed for reflow soldering. Use wave soldering or hand soldering within the temperature and time limits specified in the Vishay Cera-Mite 565R datasheet.
What is included with this purchase?
One capacitor only. No documentation included.
A Y-cap sits quietly at the edge of a circuit, last line between the power line and ground, rated and ready to take the hit safely if things go wrong. This one is unused, leads intact, markings clear - drop it in and carry on.
