Teardown: FSP FSP260-20TLA 260W 80 PLUS Bronze TFX OEM Power Supply for Lenovo Desktops
2026-09-18 · Compiled by Best IT Parts from public industry reporting
Chongdiantou's full teardown of the FSP260-20TLA, a 260W TFX-format OEM power supply built by FSP for Lenovo commercial small-form-factor desktops: 153.1 x 82.4 x 65.2mm, 654g, 100-240V/4A input, single-rail +12V/21.5A output, certified to 80 PLUS Bronze plus CCC and KC, with a Lenovo-customised 10-pin mainboard connector and 4-pin CPU feed. Topology is active PFC plus flyback with secondary synchronous rectification. Input filtering uses a Huade 5A/250V fuse, Walsin AH222M Y-caps, Kailei 0.47uF and 0.1uF X2 caps, a Pingwei GBU808 (800V/8A) bridge and a 1.5uF/450V film capacitor; the PFC stage runs an SOP8 F801 controller driving a ROHM R6020KNX (600V, 196mΩ) MOSFET alongside an AiSHi 150uF/450V bulk capacitor and a 4.7uF/35V film part. The primary switch is an AP80SL650AI 800V superjunction MOSFET with a QJ-2L fast-recovery diode pair and a three-resistor bleeder string. Secondary rectification pairs an MPS MP6908 SR controller (DCM/CCM/QR modes, high- and low-side, no auxiliary winding) with an Infineon IPP086N10N3 G (100V, 8.2mΩ), filtered by three Rubycon 330uF/16V solid capacitors plus Nippon Chemi-Con KY 1000uF/16V and two KZE 2200uF/16V long-life electrolytics. An Anpec APW9010 NTC fan controller with low-temperature fan stop drives an HK Fan AS8025H12 (12V/0.45A) unit. A clear cost-versus-durability benchmark for OEM PSU component sourcing.
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Technical details are reproduced as reported. Verify specifications against the original source before design or procurement decisions.