Active Member
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[China]
Address: NO.27,Jinlanling Street,Taigongling Village Dongguan 523829,Guangdong,China
Contact name:Eric
Aolittel Technology Co.,Ltd |
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Street Light SPD 2PIN TMOV Thermally Protected Metal Oxide Varistor 20mm 320VAC 10KA With Thermal Cutoff Built-in
Applications
• SPD Products
• AC Panel Protection Modules
• AC Line Power Supplies
• Surge Protected Strip Connectors
• AC Power Meters
• Relocatable AC Power Taps
• GFCI (Ground Fault Current Interupter)
• UPS (Uninterruptable Power Supply)
• White Goods
• Plug-in Street Light SPD
• AC/DC Power Supplies
Description
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| Dmax | 25.0 | d1 (±0.1) | 1.0 |
| H2 max | 29.0 | d2 (±0.1) | 1.0 |
| Tmax | 10.7 | Lead Wire | Tinning copper wire |
| Lmin | 15.0 | Comply with | ROHS Directive |
| W1 (±1.0) | 11.5 | Coating | Blue insulated epoxy resin |
| e1 (max) | 5.6 | Unit weight | 8.3g |
Electrical Performances
| Electrical parameters | |||||||
| Varistor voltage (V1mA) | 459V | ~ | 510 V | ~ | 561V | ||
| Max. continuous operating voltage | Vrms: 320 V; | VDC: 410V | |||||
| Rated power | 1.0 W | ||||||
| Max. clamping voltage (8/20μs) | VC: 850V; | IC: 100A | |||||
| Surge current (1×8/20μs) | 10000 A | (8/20μs) | |||||
| Max. energy | 184 J | (2ms) | |||||
| Typical capacitance | 1050pF | (1KHz) | |||||
| Leakage current | ≦10μA | (75% of V1mA (DC)) | |||||
| Operating temperature | -40℃ ~ +85℃ | ||||||
| Storage temperature | -40℃ ~ +100℃ | ||||||
| Fuse temperature | 146℃ | ||||||
| Hand soldered temperature / Time | 265℃/3s | ||||||
| Packing | ■ | Bulk | 200pcs/bag | 800pcs/box | 1600pcs/carton |
| □ | Tape&Reel | ----pcs/reel | ------pcs/box | ------pcs/carton | |
| □ | Ammopack | ----pcs/bag | -------------------- | ------pcs/carton |
Features
• Designed to facilitate compliance to UL1449 for SPD products
• High peak surge current rating up to 10kA
• Wave solderable
• Standard lead form and spacing option
• -55°C to +85°C operating temp range
• Three-lead version available for indication purposes
Select the Right Varistors for Overvoltage Circuit Protection
Varistors, also called metal-oxide varistors (MOVs), are used to protect sensitive circuits from a variety of overvoltage conditions. Essentially, these voltage-dependent, nonlinear devices have electrical characteristics similar to back-to- back Zener diodes.
Step 1: To find the voltage rating of the MOV, allow for 20% headroom to account for voltage swell and power-supply tolerances: 24 V dc × 1.2 = 28.8 V dc. Given that no varistors have a voltage rating of exactly 28.8 V, check the datasheets for specifications for 31-V dc MOVs.
Step 2: To determine which MOV disc size to use, first identify the MOV series that minimally meet the 1000-A surge requirement. Inspecting the table above suggests a 20-mm MOV with a 31-V dc maximum continuous voltage rating (part number V20E25P) as a possible solution to meet the requirements.
Step 3: Use the pulse-rating curves (Fig. 2) in the same datasheet to determine pulse capabilities relative to the 40 pulses at the 1000-A requirement.
