Teardown: Great Wall SLIM3200C 3200W Titanium Server PSU — TDK 450V/1300µF Bus Capacitor
2026-09-17 · Compiled by Best IT Parts from public industry reporting
A teardown of the Great Wall SLIM3200C, a 3200W 80 PLUS Titanium silicon-carbide server power supply, shows a single TDK B43643 aluminum electrolytic capacitor on the high-voltage bus. The unit accepts 100-127V and 200-240V AC input as well as 240V DC input, and delivers a 12.2V main rail rated 262A, reaching its 3200W maximum at 220-240V AC or 240V DC. The capacitor is rated 450V/1300µF and sits between the PFC stage and the downstream full-bridge LLC converter.
The supply follows an interleaved totem-pole PFC plus full-bridge LLC plus synchronous rectification chain: the PFC stage performs boost and power-factor correction, the LLC stage handles isolated conversion, and the secondary side produces the 12.2V high-current output. The chassis measures about 450mm x 54.6mm x 39.8mm, so 3200W is packed into a compact, high-density layout that places strict demands on the volume and performance of the internal high-voltage storage capacitor.
At 450V and 1300µF the TDK part stores roughly 132J at its rated voltage. It smooths the DC bus and buffers energy during input-voltage swings or fast load changes, giving the LLC stage a steadier input. The B43643 series is a solder-tag aluminum electrolytic family intended for high-power supplies, UPS and industrial power, covering 200-450V DC and 100-3300µF, with a maximum operating temperature of 105 degrees C and more than 3000 hours of life at rated voltage, rated ripple current and 105 degrees C. Its ultra-compact design targets capacity density in space-constrained high-power supplies.
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Technical details are reproduced as reported. Verify specifications against the original source before design or procurement decisions.