Fast Recovery Diodes in PFC and High-Voltage Stages
trr, Qrr and snubber notes for 650 V and 750 V FRD platforms.
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An uninterruptible power supply (UPS) keeps critical IT and industrial loads online when the grid fails. Modern data-center UPS designs push higher switching frequency, tighter power factor and smaller magnetics — which raises stress on every power switch in the PFC boost and inverter legs.
Typical UPS power stages need low-loss 600–650 V super-junction MOSFETs for the high-frequency bridge, fast-recovery diodes (FRD) for auxiliary and clamp nodes, and increasingly 650 V / 1200 V SiC Schottky diodes where reverse-recovery charge (Qrr) would otherwise heat the silicon switch and worsen EMI. Thermal cycling, surge tolerance and long-term reliability matter as much as datasheet Vds and Id ratings.
MHCHXM manufactures power semiconductors in Wuxi with particular strength in Schottky and fast-recovery families. For UPS programs we map SJ MOSFET, FRD and SiC diode candidates by voltage class, package (TO-220, TO-247, module) and dynamic parameters — supporting global OEM reliable supplier evaluation without publishing competitor brand tables. Catalog samples are typically prepared within about 48 hours after confirmation; FAE reply within 24 hours on business days. Overseas buyers can reach the Ningbo desk (Mr. Albert Hong) for export quotes and design-in documentation.

0 of 33 parts link to the MHCHXM catalog.
| Model | VDS (V) | Rdson Max(mΩ) | Package | Actions |
|---|---|---|---|---|
| HXMH65M600EF | 650 | 600 | ITO-220AB | Quote |
| HXMH65M600ES | 650 | 600 | TO-252-2L | Quote |
| HXMH60M75P | 600 | 75 | TO-247AB | Quote |
| HXMH60M105P | 600 | 105 | TO-247AB | Quote |
| HXMH60M99EP | 600 | 99 | TO-247AB | Quote |
| HXMH60M70EP | 600 | 70 | TO-247AB | Quote |
| Model | VRRM (V) | IF (A) | Trr(ns) | VF(V) | Package | Actions |
|---|---|---|---|---|---|---|
| SFP6004 | 400 | 60 | 50 | 1.4 | TO-247AB | Quote |
| SFP6003 | 300 | 60 | 50 | 1.15 | TO-247AB | Quote |
| SFP60H06A | 600 | 70 | 40 | 2.3 | TO-247AC-A | Quote |
| SFP30H06A | 600 | 30 | 40 | 2.3 | TO-247AC-A | Quote |
| SFP6006A | 600 | 60 | 70 | 1.7 | TO-247AC-A | Quote |
| SFP3006A | 600 | 30 | 40 | 1.55 | TO-247AC-A | Quote |
| SF806A | 600 | 8 | 35 | 1.6 | TO-220AC-A | Quote |
| SF1006A | 600 | 10 | 35 | 1.7 | TO-220AC-A | Quote |
| SF1506A | 600 | 15 | 35 | 1.7 | TO-220AC-A | Quote |
| SFF806A | 600 | 8 | 35 | 1.55 | ITO-220AC | Quote |
| SFF1006A | 600 | 10 | 35 | 1.7 | ITO-220AC | Quote |
| SFF1506A | 600 | 15 | 35 | 1.6 | ITO-220AC | Quote |
| SF8H06A | 600 | 8 | 25 | 3.5 | TO-220AC | Quote |
| SF10H06A | 600 | 10 | 25 | 2.8 | TO-220AC | Quote |
| SF15H06A | 600 | 15 | 25 | 2.5 | TO-220AC | Quote |
| SFF8H06A | 600 | 8 | 25 | 2.3 | ITO-220AC | Quote |
| SFF10H06A | 600 | 10 | 25 | 2.8 | ITO-220AC | Quote |
| SFF15H06A | 600 | 15 | 30 | 2.3 | ITO-220AC | Quote |
| Model | VRRM (V) | IF (A) | VF(V) | Package | Actions |
|---|---|---|---|---|---|
| ECR865A | 650 | 8 | 1.5 | TO-220AC-A | Quote |
| ECR1065A | 650 | 10 | 1.5 | TO-220AC-A | Quote |
| ECR1565A | 650 | 15 | 1.55 | TO-220AC-A | Quote |
| ECR2065A | 650 | 20 | 1.5 | TO-220AC-A | Quote |
| ECR2065PT | 650 | 20 | 1.5 | TO-247AB | Quote |
| ECR3065PT | 650 | 30 | 1.5 | TO-247AB | Quote |
| ECR4065PT | 650 | 40 | 1.5 | TO-247AB | Quote |
| ECR20120PT | 1200 | 20 | 1.8 | TO-247AB | Quote |
| ECRP40120A | 1200 | 40 | 1.8 | TO-247AC-A | Quote |
Map topology to catalog parts, request samples and lock AVL with MHCHXM FAE.
MHCHXM recommends Schottky, FRD, MOSFET or SiC devices matched to the UPS Power Supply power stage. See recommended models on this page or contact FAE for a shortlist.
Share voltage, current, package and thermal limits. FAE proposes catalog or customized Schottky, FRD, MOSFET or SiC options matched to the UPS Power Supply power stage.
Catalog samples for UPS Power Supply-related parts are typically prepared within about 48 hours after stock and specification confirmation.
Use the Contact form with stage Design-in, or reach the Ningbo overseas office for international programs. Typical reply is within 24 hours.
Package notes, thermal checklists and sample workflow — useful before you submit a design-in request.
trr, Qrr and snubber notes for 650 V and 750 V FRD platforms.
Read guideBrowse MHCHXM catalog models suited to UPS Power Supply, then open each datasheet for details.