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Category: resistanceDescription: Vishay Sfernice 25W RCH25 series resistors suitable for RCH 25 W chassis series are designed to be mounted on heat sinks. Can withstand high short-term overload with thick coating and non inductive low heat radiation. Installation is the same as RH wire wound resistors, especially suitable for high-frequency operation and circuit cutting. Rated power: | ------------------------------------------------------------------------------------------------------------------------------------------------------------------| F | T | S | Ø D screws not provided 28 | 14 | 27.5 | 18.3 | 18.3 | 19.8 | 7.7 | 3.2 M3 size - Sfernice series| RCH 5 | RCH 10 | RCH 25 | RCH 50 L | 16.6 | 19 | 28 | 50 W | 9 | 11 | 14 | 15.5 H | 16.4 | 20.6 | 27.5 | 29.4 P | 10.2 | 12.7 | 18.3 | 33 F | 11.3 | 14.3 | 18.3 | 39.7 T | 12.5 | 15.9 | 19.8 | 21.4 S | 5.3 | 5 | 7.7 | 8 Ø D | 2.4 | 2.4 | 3.2 | 3.2 | M2 | M2 | M3 | M3 Main Features - Overload Duration| RCH25 | RCH50 | BDS100 | BDS250 1 s | 375W | 750W | 200W | 1500W 2 s | 300W | 600W | 150W | 1250W 5 s | 125W | 250W | 125W | 1000W 10 s | 75W | 150W | 100W | 750W For every one degree increase in ambient temperature above 25 ° C, the allowable overload is reduced by 1%. The main feature table is only applicable to resistors appropriately installed on heat sinks, with a thermal resistance of 1 ° C/W at rated powers of 25 and 50W, 0.7 ° C/W at rated power of 100W, and 0.28 ° C/W at rated power of 250W. This data is only valid when hot oil grease is used and the resistor is correctly tightened by the mounting screw. Tightening torque - RCH25 | RCH50 | BDS100 | BDS250 0.7Nm | 1Nm | 2Nm | 2Nm86791+$99.103610+$94.7947100+$94.0191250+$93.4159500+$92.46791000+$92.03702500+$91.43385000+$90.9167 -
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Category: resistanceDescription: 50W RCH50 These 50W RCH50 series resistors are designed specifically for installation on heat sinks. They can withstand high short-term overloads, are non inductive, and are particularly suitable for high-frequency operation and circuit disconnection. Power at 25 ° C | 50W (with heat sink), 5.5W (without heat sink) --- | Resistance tolerance | ± 5% temperature coefficient | ≤ 1 Ω± 250ppm/° C,>1 Ω± 150ppm/° C Operating temperature | -55 ° C →+125 ° C Thermal resistance | 1.0 ° C/W Ultimate component voltage | 1285V AC overload voltage | 2500V AC (maximum) dielectric withstand voltage | 3.5kV AC insulation resistance | 10000M Ω length | 50mm width | 29.4mm height | 15mm size --- Sfernice series| RCH 5 | RCH 10 | RCH 25 | RCH 50 L | 16.6 | 19 | 28 | 50 W | 9 | 11 | 14 | 15.5 H | 16.4 | 20.6 | 27.5 | 29.4 P | 10.2 | 12.7 | 18.3 | 33 F | 11.3 | 14.3 | 18.3 | 39.7 T | 12.5 | 15.9 | 19.8 | 21.4 S | 5.3 | 5 | 7.7 | 8 Ø D | 2.4 | 2.4 | 3.2 | 3.2 | M2 | M2 | M3 | M3 Main Features - Overload Duration| RCH25 | RCH50 | BDS100 | BDS250 1 s | 375W | 750W | 200W | 1500W 2 s | 300W | 600W | 150W | 1250W 5 s | 125W | 250W | 125W | 1000W 10 s | 75W | 150W | 100W | 750W For every one degree increase in ambient temperature above 25 ° C, the allowable overload is reduced by 1%. The main feature table is only applicable to resistors appropriately installed on heat sinks, with a thermal resistance of 1 ° C/W at rated powers of 25 and 50W, 0.7 ° C/W at rated power of 100W, and 0.28 ° C/W at rated power of 250W. This data is only valid when hot oil grease is used and the resistor is correctly tightened by the mounting screw. Tightening torque - RCH25 | RCH50 | BDS100 | BDS250 0.7Nm | 1Nm | 2Nm | 2Nm20571+$97.659210+$93.4131100+$92.6488250+$92.0544500+$91.12021000+$90.69562500+$90.10125000+$89.5917
