Vishay Intertechnology has expanded its LTO series of thick film power resistors with a new AEC-Q200 rated device capable of pulse absorption up to 75 J/0.1 s. The Vishay Sfernice LTO 150H comes in a clip-mount TO-247 package for direct attachment on a heatsink and has a high power dissipation of 150 W at +45 °C.
The device introduced has a novel design that provides 30% more energy absorption than previous LTO series devices, providing greater protection against short transient pulses. The end result is more stable operation in high-stress conditions, lowering the likelihood of failure and increasing total system reliability.
The Sfernice LTO 150H high power dissipation and low thermal resistance of 0.87 °C/W further enhance its ability to deliver consistent performance and safeguard sensitive components, while allowing fewer devices to be utilized — saving board space, simplifying layouts, and reducing overall solution costs.
The Sfernice LTO 150H thick film power resistors offer high temperature performance up to +175 °C, resistance values from 1 ? to 2.2 k?, and tolerances as low as ±2%.
Available in Clip-Mount TO-247 Package for Direct Mounting on a Heatsink, the device combines high pulse absorption to 75 J/0.1 s with power dissipation of 150 W.
Key Applications
The device will act as a precharge or discharge resistor for controls, 48 V board nets, BMS, fuel cells, and on-board chargers for HEVs, EVs, and low-speed electric vehicles; energy monitoring and metering systems; agricultural vehicles and farm equipment; industrial motor drives, welding equipment, and power tools; switches, routers, and optical network equipment; and weapon guidance systems.
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