Through Hole Radial Leaded SMD Varistor 10D471K 470V 10% With SMT Terminals
Through Hole Radial Leaded SMD Varistor 10D471K 470V 10% With SMT Terminals
Construction
Round varistor element, leaded
Coating: silicon resin, flame-retardant to UL 94 V-0
Terminals: tinned CP wire
Features
High-energy AdvanceD series E2
High surge current ratings up to 10 kA High energy ratings up to 400 J
Wide operating voltage range 130 … 625 VRMS
Enhanced resistance against heat and humidity 85 °C, 85% r.h., 0.85 VV (1 mA), 1000 h for use in harsh environments
PSpice models
Dimension
| Physical parameters | Unit : mm | ||||||
|
|
D (max.) | 12.0 | |||||
| F (±0.5) | 7.5 | ||||||
| T (max.) | 5.5 | ||||||
| H (max) | 15.5 | ||||||
| L (min) | 2.3 | ||||||
| d (±0.08) | 1.5 | ||||||
| Trademark | UCHI | ||||||
| P/N | 10D471K | ||||||
| Approvals | VDE,cUL | ||||||
| Date code | Y: Year M:Month | ||||||
| Lead wire | CP wire | ||||||
| Coating | Blue insulated epoxy resin | Weight, g | 0.8 | ||||
Performances
| Electrical parameters | |||||||
| Varistor voltage (V1mA) | 423V | ~ | 470 V | ~ | 517V | ||
| Max. continuous operating voltage | Vrms: 300 V; | VDC: 385V | |||||
| Rated power | 0.4 W | ||||||
| Max. clamping voltage (8/20μs) | VC: 775V; | Ip: 25A | |||||
| Surge current (1×8/20μs) | 2500 A | (8/20μs) | |||||
| Max. energy | 96 J | (2ms) | |||||
| Typical capacitance | 210pF | (1KHz) | |||||
| Leakage current | ≦20μA | (75% of V1mA (DC)) | |||||
| Operating temperature | -40℃ ~ +85℃ | ||||||
| Storage temperature | -40℃ ~ +85℃ | ||||||
| Lead Material | Copper Clad Steel Wire |
| Soldering Characteristics | Solderability per MIL–STD–202, Method 208 |
| Insulating Material | Cured, Silicone meets UL94V–0 requirements |
| Device Labeling | Marked with UCHI, voltage and date code |
Environmental Specifications
| Humidity Aging | +85°C, 85% RH,1500 hours +/-10% typical voltage change |
| Thermal Shock | -55°C to +125°C, 1000 cycles +/-10% typical voltage change |
| Solvent Resistance | MIL–STD–202, Method 215 |
| Moisture Sensitivity | Level 1, J–STD–020 |
Actual Product Photos
Varistor basics
The metal oxide varistor, MOV, has a characteristic where for low voltages it has a high electrical resistance, and for higher voltages the resistance falls. Unlike diodes, the metal oxide varistor exhibits in both polarities
There are two main types of varistor:
Ceramic / metal oxide varistor: When the term varistor is used, this is generally what is being referred to. The varistor is bidirectional and is based around a ceramic or metal oxide.
Diode varistor: This type of structure utilises a diode whose turn on characteristic provides the variable resistance. If only a single diode is used, then it only acts in one direction, but obviously back to back diodes can be used to provide bidirectional variable resistance properties. Normally when diodes are used for protection they are not normally referred to as varistors, although this may sometimes be the case.
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