Phihong USA
Phihong USA Corporation is the US subsidiary of Taiwan-listed Phihong Technology Co., Ltd., a 50-plus-year OEM/ODM power-supply manufacturer serving enterprise OEMs across telecom, datacom, medical, industrial, and consumer-electronics markets with adapters, PoE products, battery chargers, and EV chargers.
- Company typePublic
- Founded1972
- HeadquartersFremont, United States
- Headcount51–100
- GTM typeB2B
- OfferingHardware or Manufacturing
What Phihong USA does
Phihong USA Corporation is the US sales, engineering-support, and distribution subsidiary of Phihong Technology Co., Ltd., a Taiwan-listed (since 2001) OEM/ODM power-electronics manufacturer founded in 1972 and headquartered in Fremont, California. The group operates a 50-year power-supply platform spanning six core product lines: AC/DC adapters from 2.75W to 330W, IEEE 802.3af/at/bt PoE injectors and splitters up to 576W, IEC 60601-1-compliant medical power supplies, battery chargers from 1W to 1kW, open-frame and internal PSUs from 100W to 1000W, and EV chargers through the Zerova subsidiary established in 2022. Underlying technology includes GaN-based power designs, DoE Level VI/VII efficiency compliance, and a portfolio of more than 160 granted patents with 64 applications pending.
The business model is a hybrid of direct OEM/ODM design-in sales and broad catalog distribution. Enterprise OEMs such as Cisco, HPE, Meta, Abbott, BD, Verkada, GoPro, and Maxell are served through direct field sales and long product-qualification cycles, while the Shell partnership supports EV-charging deployment via Zerova. Catalog distribution through DigiKey, Mouser, and Sager Power Systems provides low-friction access for mid-market and prototyping customers across more than 35 countries. Manufacturing is concentrated in Asia — Dongguan, China (since 1996) plus Vietnam (Phase 1 launched 2020, Phase 2 in 2021, totaling 34 production lines) — with R&D distributed across the US, China, and Taiwan (Tainan center opened 2015) and more than 350 engineers globally. US-entity headcount is in the 51-100 range, focused on sales, customer engineering, and distribution support rather than manufacturing.
Revenue is not publicly disclosed at the US-entity level. Marquee enterprise customers across datacom, medical, security, consumer electronics, and energy indicate meaningful but undisclosed concentration in tier-1 OEM contracts, balanced by broad distributor reach. Competitive positioning rests on multi-jurisdictional regulatory compliance (ISO 9001/14001/13485/45001, IATF 16949, IECQ, RoHS, REACH, TSCA), patent depth, manufacturing scale and dual-country tariff hedging, and the recent Zerova-led entry into the EV-charging market.
Phihong USA firmographics
Firmographics- Name
- Phihong USA
- Legal name
- Phihong USA Corporation
- Website
- https://phihong.com
- Company type
- Public
- Founded year
- 1972
- Operating status
- Operating
- Headcount range
- 51–100 employees
- Short description
- Phihong USA Corporation is the US subsidiary of Taiwan-listed Phihong Technology Co., Ltd., a 50-plus-year OEM/ODM power-supply manufacturer serving enterprise OEMs across telecom, datacom, medical, industrial, and consumer-electronics markets with adapters, PoE products, battery chargers, and EV chargers.
- Ownership category
- akta.pro rank
Phihong USA industry classification
Industry- Product category
- Power Supply Manufacturing
- NAICS
- Electrical Equipment Manufacturing (33531), Power, Distribution, and Specialty Transformer Manufacturing (335311), Current-Carrying Wiring Device Manufacturing (335931)
- SIC
- Electronic & Other Electrical Equipment (No Computer Equip) (3600), Power, Distribution & Specialty Transformers (3612)
- akta.pro primary industry
- Industrial Electronics Original Design Manufacturing (ODM) (IMAGAGAB)
- akta.pro secondary industries
- EV/Industrial Charging Power Electronics (Chargers, rectifiers, power stages) (IMAGADAF), Power Delivery & Fast-Charging Accessories (GaN, PD/QC, PPS) (CRACATAI), Wall Chargers (AC Adapters) (CRACATAA)
Keywords
Where Phihong USA is headquartered
LocationHeadquarters
- HQ city
- Fremont
- HQ country
- United States
- HQ region
- North America
Offices7 records
Markets served
Phihong USA business model
Business model- GTM type
- B2B
- Offering type
- Hardware or Manufacturing
- Cost components
- Supply Chain, Personnel, Operations, Technology or R&D, Infrastructure, Marketing or Sales
Revenue model
- Power Supply Products: Sale of standard and custom AC/DC adapters, desktop adapters, wall-mount adapters, USB chargers, open-frame power supplies, and medical power supplies. Power ratings range from 2.75W to 1000W.
- Power over Ethernet Products: PoE injectors, midspans, splitters, media converters, and PoE-to-USB-C devices compliant with IEEE802.3af/at/bt standards.
- Battery Chargers: Lithium-ion and lead-acid battery chargers for mobility scooters, electric bikes, wheelchairs, robotics, and power tools. Output range from 1W to 1kW.
- OEM/ODM Custom Solutions: Customized power product design and manufacturing for OEM/ODM customers with engineering resources across North America, Asia, and Europe.
- EV Charging Products: Level 2 AC and Level 3 DC Fast Chargers through Zerova subsidiary, including 30kW wall mount DC chargers.
Pricing tiers
| Model | Billing | Price |
|---|---|---|
| Other | Pay-as-you-go | Standard products - quote-based pricing |
Go-to-market motion2 records
Distribution channels5 records
Marketing channels5 records
Phihong USA product offering
Product offeringCore offering
Phihong USA designs and manufactures power supply products for electronics OEMs and ODMs, including AC/DC adapters, Power over Ethernet (PoE) injectors and midspans, medical-grade power supplies, lithium-ion and lead-acid battery chargers, open-frame/internal power supplies, and EV chargers offered through its Zerova subsidiary. Power ratings span from 2.75W to 1,000W, with products compliant to IEEE 802.3af/at/bt, IEC 60601-1, and DoE Level VI/VII standards. The company combines standard catalog products with custom OEM/ODM design, manufacturing in ISO 9001/13485/14001-certified facilities in China, Taiwan, and Vietnam, and R&D engineering centers in the US, China, and Taiwan.
Product overview
Phihong USA is a manufacturer of power supplies and adapters serving consumer, telecom, datacom, enterprise, industrial, and medical applications. The company's product portfolio includes six core product lines: (1) AC/DC Adapters ranging from 2.75W to 330W with various form factors and connectors including desktop, wall-mount, and USB models; (2) Power over Ethernet (PoE) products including injectors, splitters, and media converters supporting IEEE802.3af/at/bt standards from 13W to 576W; (3) Medical Power Supplies and Adapters from 5W to 65W meeting IEC 60601-1 standards; (4) Battery Chargers for mobility devices with lithium-ion and lead-acid models from 1W to 1kW; (5) Open-Frame/Internal PSU units from 100W to 1000W for industrial applications; and (6) EV Chargers through the Zerova subsidiary including Level 2 AC and Level 3 DC fast chargers up to 360kW. The company also offers GaN-powered chargers and USB Power Delivery 3.0 products as advanced technology sub-lines. Phihong operates as an OEM/ODM partner since 1972, with factories in China, Taiwan, and Vietnam certified to ISO 9001, ISO 14001, ISO 13485, and IATF 16949 standards.
Differentiator
Problem solved
Functional benefit
Brands
- Zerova: Electric vehicle charging brand offering Level 2 AC and Level 3 DC Fast Chargers
Products and services
- AC/DC Adapters Desktop, wall-mount, and fixed-plug AC/DC adapters with output power from 2.75 W to 330 W and various input connectors (USB-A, USB-C, barrel, Molex). Targets OEMs and ODMs integrating power delivery into consumer, networking, and industrial devices.
- Power over Ethernet (PoE) Products PoE injectors, midspans, splitters, media converters, and PoE-to-USB-C devices compliant with IEEE 802.3af, IEEE 802.3at, and IEEE 802.3bt standards and DoE Level VI efficiency. Power ratings span 13 W to 576 W for OEM networking, security-camera, and wireless-access-point deployments.
- Medical Power Supplies and Adapters Medical-grade adapters and open-frame power supplies from 5 W to 65 W compliant with IEC 60601-1 safety standards, with double fusing, OVP/OCP/SCP protection, and low leakage current. Intended for patient monitors, ventilators, infusion pumps, and diagnostic devices.
- Battery Chargers Lithium-ion and lead-acid battery chargers with output range from 1 W to 1 kW, including DM and DA series for mobility scooters, electric wheelchairs, e-bikes, robotics, and power tools. Targets OEM/ODM manufacturers of personal-mobility and industrial devices.
- Open-Frame / Internal PSU Industrial-grade internal power supplies with Active Boost PFC and Class D Half-Bridge ZVS topology achieving up to 91% efficiency, operating temperatures from -10°C to 70°C, and outputs from 100 W to 1,000 W. Includes BI, BF, and PA series with a 5-year warranty and 5,000-meter altitude capability.
- EV Chargers (Zerova) Level 2 AC and Level 3 DC Fast Chargers for electric vehicles, including a 30 kW wall-mount DC charger and the 360 kW DC Fast Charger, sold through Phihong's Zerova subsidiary for EV charging operators and infrastructure partners.
Quantifiable outcome
- Defect ratios under 50ppm at certified factories
- +4 more outcomes
Companies that use Phihong USA
Customer profileNamed customers8 records
Segments4 records
Ideal customer profiles4 records
Phihong USA technology and API
TechnologyTechnology focussed Yes
API detail
- Has API
- No
- API docs
- API detail
Core technology
AI maturity
App detail
Feature6 records
Phihong USA partnerships and signals
Strategic signalPartnerships
Five partnerships are on record, tiered flagship, core and primary.
- Shell GroupflagshipPhihong Technology selected to support Shell Group's global EV charging expansion initiative, providing EV charging infrastructure products.
- ZerovacoreEV subsidiary established in 2022 for Level 2 AC and Level 3 DC Fast Chargers. Zerova handles EV charging products under Phihong umbrella.
- DigikeyprimaryAuthorized global distributor for Phihong power supplies, adapters, PoE injectors, and related products. Provides online ordering and fulfillment services.
- Mouser ElectronicsprimaryAuthorized global distributor with regional operations across Americas, Europe, Asia, and Australia offering Phihong products through regional websites.
- Sager Power SystemsprimaryRegional distributor for North America focusing on power supply products. Part of Sager Electronics network.
Scale indicators8 records
Recent moves10 records
Expansion highlights6 records
Phihong USA competitors and assessment
Company assessmentEmerging players
- Astrodyne TDI: Astrodyne TDI is a niche power supply manufacturer focused on EMI filters and custom power solutions for medical, industrial, and military applications - overlapping with Phihong's custom OEM/ODM power supply business.
Direct peers
- CUI Inc. CUI Inc. is a closely comparable peer offering AC/DC adapters, DC/DC converters, and audio/power products targeted at OEM customers in similar consumer, industrial, and IoT applications as Phihong.
- FSP Group: FSP Group is a leading power supply manufacturer specializing in PC, adapter, and industrial power supplies - overlapping with Phihong in AC/DC adapters and open-frame PSUs for OEM customers.
- Mean Well Enterprises: Mean Well is one of the world's largest standard power supply manufacturers, offering AC/DC, DC/DC converters, and DIN-rail PSUs that overlap directly with Phihong's open-frame internal PSUs and adapter lines serving industrial and OEM customers.
- XP Power: XP Power designs and manufactures AC/DC power supplies, DC/DC converters, and EMI filters for industrial, healthcare, and semiconductor equipment markets - directly comparable to Phihong's medical and industrial product lines.
- Tritium: Tritium is a specialist DC fast charger manufacturer for EVs - directly comparable to Phihong's Zerova subsidiary in the Level 3 DC fast charging product category.
- Bel Fuse: Bel Fuse manufactures power conversion products including AC/DC adapters, DC/DC converters, and PoE solutions through its Bel Power Solutions division - directly competing in similar OEM power markets as Phihong.
- GlobTek: GlobTek manufactures a wide range of power supplies, AC adapters, and battery chargers - directly overlapping with Phihong's adapter, medical, and mobility charger product lines for OEM customers.
- TDK-Lambda: TDK-Lambda is a major industrial and medical power supply manufacturer, competing head-to-head with Phihong in medical-grade adapters (IEC 60601-1), open-frame PSUs, and high-reliability OEM power solutions.
Broad incumbents
- Delta Electronics: Delta is a global leader in power and thermal management, directly competing with Phihong in AC/DC adapters, DC/DC converters, and industrial power supplies across telecom, datacom, and consumer markets. Far larger scale and broader product portfolio than Phihong.
Market position
Strengths5 records
Weaknesses5 records
Competitive moat6 records
Key risks5 records
Key highlights7 records
Customer concentration
Phihong USA social profiles
Digital presencePhihong USA compliance and trust
Trust signalCompliance22 records
Phihong USA financial estimates
Financial estimateRevenue estimate
Valuation estimate
Phihong USA leadership team
Management profileNumber of profiles
Profiles5 records
Phihong USA subsidiaries and ownership
Company hierarchySubsidiaries1 record
Phihong USA funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Phihong USA M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Phihong USA
What does Phihong USA do?
Phihong USA designs and manufactures power supply products for electronics OEMs and ODMs, including AC/DC adapters, Power over Ethernet (PoE) injectors and midspans, medical-grade power supplies, lithium-ion and lead-acid battery chargers, open-frame/internal power supplies, and EV chargers offered through its Zerova subsidiary. Power ratings span from 2.75W to 1,000W, with products compliant to IEEE 802.3af/at/bt, IEC 60601-1, and DoE Level VI/VII standards. The company combines standard catalog products with custom OEM/ODM design, manufacturing in ISO 9001/13485/14001-certified facilities in China, Taiwan, and Vietnam, and R&D engineering centers in the US, China, and Taiwan.
Is Phihong USA a public or private company?
Phihong USA is a public company. It is classified as public and is currently operating.
When was Phihong USA founded?
Phihong USA was founded in 1972. It employs 51 to 100 people.
Where is Phihong USA based?
Phihong USA is headquartered in Fremont, United States, in the North America region.
How does Phihong USA make money?
Five revenue lines are on record. Power Supply Products are the primary driver. The others are power over Ethernet Products, battery Chargers, OEM/ODM Custom Solutions and EV Charging Products.
Who are Phihong USA's main competitors?
Astrodyne TDI is listed as an emerging player. Direct peers are CUI Inc., FSP Group, Mean Well Enterprises, XP Power, Tritium, Bel Fuse, GlobTek and TDK-Lambda. Delta Electronics is listed as a broad incumbent.
Does Phihong USA have an API?
No public API is recorded for Phihong USA.
What industry is Phihong USA in?
Phihong USA's product category is Power Supply Manufacturing. Its primary akta.pro industry code is IMAGAGAB, Industrial Electronics Original Design Manufacturing (ODM), with a secondary code of IMAGADAF, EV/Industrial Charging Power Electronics (Chargers, rectifiers, power stages). Its NAICS code is 33531 and its SIC code is 3600.