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 Parameter Value Varistor Voltage (V1mA) ~470V (at 1mA DC) Clamping Voltage ~775V (typical @ 25A surge) Maximum AC Voltage (VAC) 300V RMS Maximum DC Voltage (VDC) 385V Energy Rating ~55–60 J (Joules) Peak Pulse Current ~2,500A (8/20µs waveform) Response Time <25ns (very fast) Capacitance ~150–300pF (depends on V & freq) Disk Diameter 10mm Tolerance ±10% (the “K” suffix) Operating Temperature -40°C to +85°C or higher Lead Spacing ~5.0 mm (typical) 🔎 Varistor Code Breakdown – TNR 10V471K Code Part Meaning TNR Thermally protected or general MOV series 10 10mm disk diameter V Varistor type 471 47 × 10¹ = 470V varistor voltage (@1mA) K ±10% tolerance on varistor voltage 🧪 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 N