Alibaba's semiconductor-suppliers directory resolves 445 China-based suppliers on 2026-06-07, with the top two listings each posting US$1-2.5 Million annual revenue and the leading supplier routing ~90% of output to the domestic market and ~8% to Southeast Asia [S8].
Made-in-China's parallel directory page for the same product class lists discrete-power and component makers clustered in three cities — Shenzhen (641-company catalogue page), Wenzhou (285-company page) and Tianjin (featured: thyristor, water-cooled power cable, welding diode, high-voltage control cabinet) — confirming the same geographic concentration across two B2B portals [S1][S3][S5].
Discrete Power Devices Dominate Sub-US$15 SKU Mix
The Made-in-China 2026-06-08 transistor-price index lists a 60 V / 64 A N-channel MOSFET (BSC066N06NS) at US$0.40-15.00 with a 10-piece MOQ from Shenzhen Semilotec, and an FGH60N60SFDTU 600 V / 120 A field-stop IGBT quoted at US$0.001-0.10 per piece by a Guangdong trading company, also at a 10-piece MOQ [S6].
A second Alibaba listing for a Guangdong-based supplier shows main products covering MOSFET, SCR, SBD, FRD and "Voitage" (regulator) discretes, again with reported annual revenue in the US$1-2.5 Million band and a 93.3% response rate on the platform [S8]. Wenzhou's Yueqing Right Pneumatic Co. — a pneumatic-component maker founded in 2003 — also appears on the same Wenzhou semiconductor-supplier page (item 4261 of 4261), illustrating how B2B portals mix semiconductor-adjacent electromechanical vendors into the same category feed [S3].
MCUs and P-Type Devices Sit Alongside Discretes in Catalogue
The Made-in-China "P-type semiconductor" sub-catalogue (indexed 2026-05-19) lists a Microchip PIC16F1507T-I/SS 8-bit MCU with 3.5 kB flash, 128 B RAM, 18 I/O and a 10-bit ADC alongside a Fairchild/onsemi FSBB20CH60C 600 V / 20 A SPM motor/motion/ignition controller offered as negotiable by Simentor Electronic and Shenzhen Yang Ming Electronics, both Guangdong-based [S4].
Product-category tags on the same page — including "8-Bit Microcontrollers-MCU" and "Motor/Motion/Ignition Controller and Driver" — show that MCU and intelligent-power-module (IPM) parts are aggregated into the same supplier page as bare discretes, which complicates side-by-side price comparison for buyers filtering only by transistor or only by MCU [S4].
Three-City Geographic Concentration: Shenzhen, Wenzhou, Tianjin
Alibaba's filtered list (2026-06-07) flags a "Wenzhou" cluster whose main products span thyristors, GTOs, IGBT discretes, silicon wafers and mid-/high-frequency induction-heating equipment, and a parallel cluster whose main products read "Semiconductor Electronic Components (MOSFET, SCR, SBD, FRD, Voitage)" — both with US$1-2.5 Million annual revenue and a domestic-market share near 90% [S8].
Made-in-China's city-level pages reinforce the pattern: Shenzhen's 641-company page indexes 641 vendor profiles, Wenzhou's 285-company page reaches item 4261 of 4261 (a pneumatic-component vendor) inside the same semiconductor feed, and Tianjin's featured-supplier block advertises water-cooled power cable, welding diode and high-voltage control cabinet assemblies as the lead SKUs for the city [S1][S3][S5]. A parallel reading of the semiconductor upstream and downstream demand snapshot places this supplier density in the context of June 2026 fab-utilisation softness across the same geography.
MOQ, Price Band and Response-Rate Patterns
Cross-portal sampling of 2026 transistor and MCU listings returns MOQs of 10 pieces on every product card examined, with per-piece price bands compressed between US$0.001 (high-volume IGBT) and US$15.00 (N-channel MOSFET sample pack) on Made-in-China, and 1-piece MOQ is also offered for selected SPM/IPM parts on the same index [S4][S6].
Alibaba's "Top 3 Markets" breakdown for the leading two suppliers reads Domestic Market 90.0%, Southeast Asia 8.0%, South Asia 2.0% for one and a comparable mix for the other, while platform-level "Response Rate" tags on the same suppliers land at 93.3% — a useful buyer-side proxy for quotation turnaround that has no equivalent on Made-in-China's city pages [S8].
What the Two Portals Disagree On
Made-in-China's "used semiconductor" company-search returns zero matches on 2026-05-18, while Alibaba's "Semiconductor Suppliers" page on 2026-06-07 returns 445 suppliers with revenue, country and main-product tags attached — meaning pre-owned/refurbished equipment sourcing is effectively Alibaba-only in the China B2B sample, and Made-in-China is not a viable channel for that segment [S7][S8].
Conversely, Made-in-China carries the deeper per-city index pages (Shenzhen 641, Wenzhou 285) with item-level vendor counts, whereas Alibaba's "Main Products" tag on the leading suppliers aggregates part families into one line — a format that obscures the underlying SKU count but speeds up RFQ routing for buyers who already know the device class they need [S1][S3][S8].
Selection Criteria for Industrial Buyers
Filter first on the three city clusters — Shenzhen, Wenzhou and Tianjin — because all 445 Alibaba suppliers and the entire Made-in-China 641+285-company index are drawn from this geography as of June-July 2026 [S1][S3][S8].
Filter second on device family: discrete power (MOSFET, IGBT, thyristor, SCR, SBD, FRD) for sub-US$15 unit pricing at 10-piece MOQ [S6][S8]; MCU (e.g. PIC16F1507T-I/SS 8-bit, 3.5 kB flash, 10-bit ADC) and IPM (e.g. FSBB20CH60C 600 V / 20 A SPM) for board-level control designs [S4]; and high-voltage assemblies (water-cooled power cable, welding diode, high-voltage control cabinet) only via Tianjin suppliers, the only city in the sample that lists these SKUs as featured products [S5].
Filter third on platform: use Alibaba when refurbished or pre-owned equipment is in scope, when domestic-market response-rate and revenue-band data are needed, and when top-3-market percentages (90% / 8% / 2%) matter to the RFQ; use Made-in-China for item-level vendor counts, per-product MOQ and per-piece price bands, and for an explicit P-type semiconductor sub-catalogue that pairs MCUs with IPMs on the same index page [S4][S7][S8]. The same server-hardware maker map tracks the CPU-side counterpart, where the Wenzhou/Shenzhen cluster overlaps with fab-adjacent discrete sourcing.
Limits of the Source Sample
No listing in the July 2026 sample carries an authorised-distributor badge, ISO/TS 16949 automotive-quality certification, or AEC-Q100 part qualification — all 445 Alibaba suppliers and every Made-in-China profile sampled are listed as manufacturers, trading companies, or "suppliers" without an automotive PPAP or VDA 6.3 audit reference [S1][S3][S5][S8].
All price figures quoted are platform-listed indicative ranges, not contract pricing: the FSBB20CH60C IPM is "Negotiable," the FGH60N60SFDTU IGBT is "US$0.001 - 0.10" with a 10-piece MOQ, and the BSC066N06NS MOSFET is "US$0.40 - 15.00" with the same MOQ, so any buyer-grade total-cost-of-ownership model must request an RFQ before locking a BOM [S4][S6]. The two B2B portals sampled are also geographically self-selected to Mainland China vendors, so cross-checking against distributor-authorised stock at Mouser, Digi-Key or Avnet is still required for parts entering automotive, aerospace or medical-design pipelines.
Trackable signals: (a) whether Made-in-China re-introduces a "used semiconductor" category — the 2026-05-18 search returned zero results and the page is currently a lead-capture form [S7]; (b) any change in Alibaba's "Top 3 Markets" mix away from the 90% / 8% / 2% domestic-Southeast-Asia-South-Asia split that the two leading suppliers reported on 2026-06-07 [S8]; and (c) any visible shift in Wenzhou's 285-company page past the current 4261-item ceiling, which would indicate a refresh cycle on the city-level index [S3].
For component-level specifications, see pressure transmitter, flow meter, and industrial valve.