Lelon OCRK Solid Capacitors Design Into 3000W Titanium CRPS Server PSU — 2 x 2700µF/16V Output Filtering
2026-09-21 · Compiled by Best IT Parts from public industry reporting
A teardown of a 3000W CRPS server power supply (model G1236-3000WNA) shows Lelon OCRK series polymer solid aluminum electrolytic capacitors on the main output rail. The unit accepts 100-240V AC and 240V HVDC input and holds 80 PLUS Titanium certification, delivering its full 3000W rating at 220-240V AC or 240V DC. The main rail is specified at 12.2V with a maximum output current of 245A, alongside a separate 12V/3A standby output.
Inside, the supply uses a PFC front end followed by an LLC converter and synchronous rectification to step the high-voltage input down to 12.2V. Two OCRK capacitors, each rated 2700µF/16V for 5400µF total, sit after the synchronous rectifier together with an output filter inductor and multiple MLCCs placed on the back of the PCBA. The 16V rating leaves voltage headroom above the 12.2V rail, and the parallel capacitor bank works with the inductor to suppress ripple and hold the output steady under a 245A load.
Server loads change quickly as processors and accelerator cards move between idle and full load, so the output capacitors also supply transient energy while the control loop adjusts. The OCRK series is rated for 5000 hours, positioning it for server power supplies and other applications that run continuously. The teardown documents two high-capacitance solid capacitors combined with MLCCs to handle ripple after rectification in a low-voltage, high-current output stage.
Need this part in volume?
Best IT Parts supplies wholesale laptop power adapters, server power supplies and replacement parts, with OEM/ODM and private-label options.
Technical details are reproduced as reported. Verify specifications against the original source before design or procurement decisions.