STE CBB21 Capacitor Reported in HONOR WIN 360W Adapter
Original report
STE edition
An August 2026 teardown feature identifies an STE CBB21 film capacitor in a compact HONOR gaming-laptop adapter.
Chongdiantou reported in August 2026 that an STE CBB21 film capacitor was identified in the high-voltage section of the HONOR WIN 360W gaming-laptop adapter. The feature, presented by Capacitor World on the Chongdiantou website, described a compact power stage using interleaved power-factor correction and an LLC converter.
This is an attributed component observation from the published teardown. It provides a specific application to investigate, while the exact component rating and its operating conditions remain separate questions.
The adapter described in the report
The source identifies the adapter as HN-200I00CP0 and lists an input range of 200–240 VAC, an output of 20 V at 18 A and a maximum output power of 360 W. It reports CCC approval for the adapter. Those details belong to the equipment described by the publisher; they are not capacitor ratings.
The report also describes active rectification and the use of gallium nitride and silicon carbide devices. Its photographs show a closely assembled PCBA. Together, these details provide the system context in which the capacitor was observed.
| Item | Identification in the source |
|---|---|
| Equipment | HONOR WIN 360W adapter, HN-200I00CP0 |
| Reported power architecture | Interleaved PFC followed by LLC conversion |
| Reported STE component | CBB21 film capacitor |
| Reported location | High-voltage side of the adapter |
| Reported voltage identification | 450 V; exact component specification still required |
What CBB21 denotes
STE's MPP/CBB21 product family uses metallized polypropylene film with an epoxy-coated construction. The manufacturer's specification describes the family for applications involving DC, AC and pulse circuits, subject to the selected component's limits.
The general CBB21 datasheet reviewed for this edition, revision 2023-10-16, lists 100, 250, 400 and 630 VDC options, a capacitance range of 0.01–3.3 µF and an operating temperature range of −40 to +105 °C. These values identify the scope of that document. The reported 450 V sample is not one of its listed voltage options and cannot be qualified by substituting the nearest listed voltage.
Obtain the specification corresponding to the component actually fitted before using the observation for a new design. A marking described in a teardown and a general family datasheet can both be useful, but they are not interchangeable evidence.
Why the circuit conditions matter
In a compact high-power adapter, the component's location alone does not define its electrical stress. Selection needs the applied DC and AC voltage, current waveform, operating frequency, pulse conditions and local temperature. The surrounding converter architecture helps frame those questions; it does not supply the missing values.
The original feature associated the capacitor with high-frequency and pulse-current applications. This edition retains that application context without attributing a measured efficiency, temperature or reliability improvement to the capacitor. Such a conclusion would require component-level data and an appropriate system comparison.
For designers researching a similar application, the next step is to pair the observed part identity with the actual specification and circuit requirements. Review those together before choosing a candidate or assigning a footprint.
Product documentation
STE MPP/CBB21 general specification, revision 2023-10-16, pages 1–2, supports the family information above. It does not verify the separately reported 450 V sample. STE MPP/CBB21 general specification
Figures and tables from the original report
The following figures retain their original captions, markings and historical context. Transcribed tables present the values shown in the published images; product selection should use the specifications for the selected part.
Related reading cited by the original report
Chinese source titles are retained below. 拆解报告：荣耀WIN 360W氮化镓适配器