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R30R400 Datasheet(PDF) 1 Page - Littelfuse |
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R30R400 Datasheet(HTML) 1 Page - Littelfuse |
1 / 2 page 252 www .littelfuse .com Radial Leaded PTC Resettable PTCs 30R Series • The 30R Series Resettable devices utilize a unique polymer-based, Positive Temperature Coefficient (PTC) material to protect electrical circuits against overcurrent conditions. • In normal operation, the 30R Series PTC has many conductive paths and a very low resistance. In an overcurrent condition, the temperature of the polymer material rises. This dramatically reduces the conductive paths resulting in an immediate rise in resistance. In this condition, the device provides circuit protection by significantly limiting the flow of current. However, once the cause of the initial overcurrent condition is eliminated, the 30R Series PTC cools down and resets to a low resistance value permitting the normal current flow to resume. • The 30R Series is a 30V Radial Leaded Device with a 40A Short Circuit Rating. AGENCY APPROVALS: Recognized under the Components Program of Underwriters Laboratory and the Component Acceptance Program of CSA. TUV approved. AGENCY FILE NUMBERS: UL E183209, CSA LR 108832 PHYSICAL SPECIFICATIONS: Materials: Leads 30R090-250: Tin plated copper-clad steel, 24 AWG (0.020" Dia.) 30R300-900: Tin plated copper, 20 AWG (0.032" Dia.) Lead Solderability: MIL-STD-202, Method 208E Coating: Thermoset Coating Device Labeling: Device is marked with the letter ‘L’, amperage rating, voltage rating & date code. Packaging: Standard bulk packaging is 500 pieces per container. Optional tape and reel packaging per EIA 486-B is also available. Standard reel quantities: ENVIRONMENTAL SPECIFICATIONS: Passive Aging: 85°C, 1000 Hours. ±5% typical resistance change. Humidity Aging: 85°C, 85% R.H., 1000 hours. ±5% typical resistance change. Thermal Shock: 85°C / –40°C, 20 times. ±10% typical resistance change. Vibration: MIL-STD 202, Method 201. No resistance change. Mechanical Shock: MIL-STD-202, Method 213 test condition I (100 g’s, 6 sec.). No resistance change. Max. Surface Temperature: 125°C Operating/Storage Temperature: –40°C to 85°C -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 0 50 100 150 200 Temperature ( °C) Part Reel Number Quantity R30R090 R30R110 R30R135 R30R160 3000 R30R185 R30R250 Part Reel Number Quantity R30R300 R30R400 1500 30R500 30R600 Bulk Only 30R700 500 Per 30R800 Container 30R900 Rerating Curve for 30R Series ® ® Next Previous |
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