TDK Launches First SMD Impact Current Limiter
Time:2023-11-02
Views:606
The J404 developed by TDK Corporation (Tokyo Stock Exchange code: 6762) is the first surface mount surge current limiter (ICL) based on PTC (Positive Temperature Coefficient) technology. This component (order number B59404J0170A062) is designed specifically for applications with DC voltages up to 500 V and AC voltages up to 350 V, and can be used to limit surge currents in applications such as DC buses and charging equipment in electric vehicles.
This product has a very compact design of 13.5 x 10 x 11 millimeters (length x width x height), allowing users to save up to 70% space and weight on PCBs through this surface mount design. These products can be quickly processed on automated production lines. Therefore, this new component is highly suitable for numerous industrial and automotive applications.
The reference temperature for entering the high resistance state of this component is+170 ° C, the thermal capacity is 1J/K, and the thermal time constant is 100s. At room temperature, the resistance is 500 Ω, with a minimum value of 150 Ω. J404 can turn off and fail (short circuit) up to 100 times, and can undergo up to 100000 cycles during capacitor charging and discharging.
The DC bus large capacitor in electric vehicle inverters or industrial variable speed drives will momentarily operate like a short circuit when connected. This sudden high energy cannot damage other components in the system, which is also applicable in the event of failure. At this point, the PTC thermistor heats itself with high current and quickly transitions to a high resistance state to provide this protection, thereby reducing the current to a safe level.
*As of August 2023, based on our own research
Characteristics and Applications
Main applications
• xEV traction inverter
• Charging and discharging of DC support capacitors
• Variable speed drive
• Switching power supply
Main characteristics and benefits
• Can be surface mounted (reflow soldered)
• Save PCB space and reduce weight
• Safe, effective, and self recoverable in the event of a malfunction
• Complies with AEC-Q200 standards
|
Disclaimer: This article is transferred from other platforms and does not represent the views and positions of this site. If there is any infringement or objection, please contact us to delete it. thank you! |
Business consulting
13823761625
Mail me