Made-in-China lists 329 semiconductor-rectifier manufacturers and 987 distinct products as of 26 June 2025 [S2], a count that has held through the 2026 sourcing window and remains the densest open index for thyristor, MOSFET and power module sourcing.
Alibaba mirrors that scale on the test-equipment side, returning 100+ global listings for "power semiconductor tester" in May 2024 [S1]; that supplier pool is the practical funnel through which most Asian fabs source curve tracers, dynamic on-state testers and thermal-impedance rigs.
Where the 2026 maker base actually sits
Three provinces dominate the Made-in-China power-semiconductor vendor index: Jiangsu, Hubei and Guangdong. Inchange Semiconductor Company Limited operates from 68 Xinmei Road, Wuxi, Jiangsu (account registered 2010) and lists power transistors, Darlington transistors, MOSFETs, RF MOSFET power transistors and PNP transistors as its main products [S4]. Xiangyang Yondda Industry Co., Limited sits at 2# Hanjiang Road, Xiangyang, Hubei, and ships power semiconductors, diodes, ultra-fast-recovery diodes, thyristor modules, phase-bridge rectifiers and laser diodes [S6]. Shenzhen Chengxing Electronic Technology Co., Ltd. is the Guangdong node in this set, with a Gold-Member profile and an LED-leaning product mix (SMD 1615/3528/5050/2835/3030/6070, DIP LEDs, car-lamp beads, power LED lamp beads) [S5].
All three vendors self-classify as Manufacturer/Factory, with Yondda and Inchange adding a Trading Company line to their business-type field [S4][S6]. That dual registration is common in this segment: it lets a domestic fab bid on OEM/ODM enclosures while still clearing export documentation as a merchant entity, which matters when a buyer wants one PO covering both the die and the power transformer gate-drive board.
Product split: thyristors, diodes, MOSFETs and Darlington
The Made-in-China semiconductor-rectifier index breaks its 987 SKUs across five main-product buckets: thyristor, power switch, power module, power regulator and semiconductor modules [S2]. For process engineers, the practical implication is that "rectifier manufacturer" on these directories is not a narrow commodity tag - it covers line-frequency SCRs, IGBT modules, IPM bricks and three-phase phase-controlled bridges side by side, often from the same vendor.
Yondda's six-product list is a clean illustration: power semiconductor, diode, ultra-fast-recovery diode, thyristor module, phase-bridge rectifier and laser diode [S6]. The ultra-fast-recovery diode line is the lever buyers should pull when reverse-recovery (trr) is the binding spec, while the phase-bridge rectifier line is the lever for 6-pulse DC bus assemblies feeding power mixer drives or hoist inverters.
Test gear, lab infrastructure and curve-tracer sourcing
Alibaba's "power semiconductor tester" category returns 100+ global supplier listings as of May 2024 [S1]. That index is the fastest way to map the tester ecosystem - dynamic on-state testers (It(av), It(rms) verification), thermal-impedance Zth(j-c) rigs, and dv/dt screening stations for SiC MOSFETs all sit in that 100+ SKU band.
For a fab standing up a new qualification bench, the practical filter is not the headline tester price but whether the rig supports double-pulse testing for SiC, paralleled IGBT modules, and gate-charge (Qg) capture - the three tests that gate every power cable-fed drive release in 2026. The Synopsys technical note on high-efficiency semiconductor materials frames the device side of the same problem: material choice (Si vs SiC vs GaN) is what decides which test limits the bench must hit.
Decision matrix: choosing a Chinese power-semi vendor in 2026
Four criteria do the practical sorting: (1) declared main-product depth, (2) trading-vs-pure-factory registration, (3) province and export-port proximity, and (4) ODM/OEM disclosure. Yondda scores high on (1) with six named product families [S6]; Inchange scores high on (1) and (2) thanks to its longer Jiangsu trading history [S4]; Chengxing scores high on (3) from Shenzhen, the closest of the three to Yantian port, but its main-product list skews LED rather than power-grade [S5].
Buyers chasing SiC or IGBT modules should weight (1) heavily, because the directory's "power semiconductor" tag is broad and only a subset of vendors - typically the Yondda/Inchange type with explicit thyristor-module and Darlington lines - actually run the high-current power meter-verified burn-in that automotive-grade release demands.
Adjacent sourcing channels and what each is good for
Made-in-China's "digital power" manufacturer page skews to consumer-tier USB cables, data cables, powerbanks and dimmable table lamps rather than discrete power semiconductors [S3] - useful as a sanity check on vendor count, but not a serious channel for IGBT or thyristor procurement. The Inchange and Yondda company pages are the right entry points for serious RFQs [S4][S6].
For MEMS-based current and thermal sensing that bolts onto the same drives, the MEMS Sensor Supply 2026 brief tracks allocation status of the live STMicro lines that often sit inside modern IGBT gate-drive boards.
Limits of the public index and what it does not tell you
Directory counts are vendor-self-declared and unverified for capacity. "329 manufacturers and 987 products" on Made-in-China [S2] is an upper bound, not a fab-count; the real number of vendors running their own wafer fab (vs. packaging, testing or trading only) is smaller and not disclosed in the index. The Alibaba "100+ products" figure for power-semiconductor testers [S1] carries the same caveat: it counts listings, not calibrated labs.
Provincial clustering is also a survivorship signal. Jiangsu (Inchange, Wuxi) and Hubei (Yondda, Xiangyang) are both on the Yangtze rail corridor with direct export containers out of Shanghai or Wuhan, which is why their Trading-Company registration lines are active [S4][S6]. Guangdong's Chengxing route goes through Shenzhen/Yantian [S5] - faster to the US West Coast, slower to EU inland destinations.
Trackable signals for the next sourcing window
Two nodes are worth re-checking in Q3 2026: (a) whether Inchange's main-product list expands into SiC MOSFETs alongside its existing RF MOSFET and Darlington lines [S4], and (b) whether Yondda adds an automotive-grade IGBT-module SKU to its six named product families [S6]. A third watch-item is Alibaba's tester category: if the 100+ listing count for "power semiconductor tester" [S1] climbs past 150 in the next refresh, that is the leading indicator of new bench-build demand from SiC fabs in the same corridor.