TNR 10V471K – Metal Oxide Varistor (MOV)

Description

⚡ TNR 10V471K – Metal Oxide Varistor (MOV)

(470V Clamping Voltage, 10mm Disk Size)

📌 General Description

The TNR 10V471K is a transient voltage suppressor designed to protect circuits from voltage spikes and surges, such as those caused by lightning strikes, inductive loads, or switching transients. It clamps high-voltage spikes to a safe level, protecting sensitive components.

⚙️ Key Specifications

🔎 Varistor Code Breakdown – TNR 10V471K

🧪 Typical Applications

• AC line protection (TVs, chargers, appliances)
• Surge protection in SMPS and UPS
• Relay contact protection
• Communication line transient suppression
• Power strips, surge protectors

✅ Advantages

• Fast clamping of transients (<25ns)
• Self-resetting after surge events (non-destructive under spec)
• Cost-effective solution for transient protection
• Easy to use in parallel with AC line or DC rails

⚠️ Design Notes

• Always ensure MOV’s max voltage rating > normal line voltage
• Install with series fuse or thermal disconnect for safety
• MOVs degrade over time — especially under repeated surges

📷 Common Mounting Style

• Through-hole (radial leads)
• Often potted or coated in blue/green epoxy
• Lead spacing fits into standard perfboard or PCB pads (~5mm)

Would you like:

• A sample AC input protection circuit with this MOV?
• A comparison with TVS diodes or PTC resettable fuses?
• Help picking a fuse to pair with this MOV for maximum safety?

Let me know your use case — I can help with placement, protection levels, and companion components!