ERZ-E05A331 Panasonic Varistor (Other) In Stock
Panasonic ZNR series 5mm disc varistor with 330V varistor voltage, designed for transient surge suppression on AC power lines up to 275V RMS, available in bulk packaging for high-volume board assembly.
- Manufacturer
- Panasonic
- Package
- Other
- Pin Count
- 2
- Lifecycle
- ACTIVE
- Datasheet
- ERZ-E05A331 Datasheet PDF
- Category
- Varistor
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 330V varistor voltage with fast sub-nanosecond response clamps high-energy transients before they damage downstream circuits
- 5mm disc body complies with standard radial THT footprint for easy drop-in surge protection on 275V AC power lines
- High peak pulse current capacity handles IEC 61000-4-5 Level 3 surge events in industrial and consumer power supplies
Applications
ERZ-E05A331 is used as a primary surge absorber across AC mains inputs in power supplies, home appliances, industrial control panels, and motor drives. The 330V varistor voltage suits 220/240V AC line protection where transient spikes must be clamped before reaching rectifier stages. It is also used in secondary protection roles on signal and power distribution lines in telecommunications equipment.
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What varistor voltage and AC line rating does ERZ-E05A331 support?
ERZ-E05A331 has a varistor voltage of 330V DC, making it suitable for clamping transients on 275V RMS (approximately 390V peak) AC power lines. This corresponds to standard 220V/240V mains protection, where the device absorbs surge energy before it can propagate to sensitive downstream components.
How quickly does ERZ-E05A331 respond to a surge event compared to a slow-blow fuse?
ERZ-E05A331 responds to surge transients in under 1 nanosecond, which is several orders of magnitude faster than a slow-blow fuse that may take milliseconds to open. This sub-nanosecond clamping speed is critical for protecting semiconductors from fast transient events defined in IEC 61000-4-5 and ANSI/IEEE C62.41 standards.
Can ERZ-E05A331 be used to protect a 120V AC circuit in North American equipment?
Yes, ERZ-E05A331's 330V varistor voltage and 275V RMS continuous operating voltage rating allow it to protect both 120V (North America) and 240V (Europe/Asia) AC circuits. The 5mm radial disc footprint drops into standard PCB holes, and the bulk packaging format supports automated insertion in high-volume manufacturing environments.
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