Solar & Energy Storage Inverters
40–100 UTC parts per inverter: PWM, logic, interface, IGBTs and high-voltage MOSFETs.
UTG75N65UTG75N120LND1UC2844GUTRS485U74HC595AGLD1117AG
Integrated Device Manufacturer · Taipei, since 1990
Analog ICs & power semiconductors, made in our own fabs.
10,000+ part numbers, many of them pin-to-pin replacements for TI, ST, onsemi, Infineon and Nexperia. We design, fabricate, package and test in-house, so you get stable supply and factory pricing.
36Years in business
10,000+Part numbers
200+Package types
270KWafers / month
1,200+Customers
35Countries served
Product portfolio
One supplier for the standard parts on your BOM
Power management, signal-chain and logic ICs, plus a full line of MOSFETs, IGBTs, diodes and transistors, from 20 V to 1800 V.
1,300+ parts
Power Management
- LDO & linear regulators: Vin up to 40 V, 0.1–3 A
- Ultra-low-IQ LDOs (<2 µA), low-noise high-PSRR LDOs
- Shunt references (TL431, LM4041), CC/CV charger controllers
- PWM, green-mode and quasi-resonant controllers
- DC/DC buck, boost, inverting; DDR termination
- USB power switches & load switches
1,500+ parts
Analog & Digital Signal
- 74-series logic: HC, HCT, AC, AHC, LVC, AUP, AUC, AVC (~1,000 items)
- Op amps & comparators (LM358, LM393, TL07x)
- Bus switches & level shifters
- Reset ICs, voltage detectors
300+ parts
Drivers
- Hall sensors: 2.5–28 V, unipolar, bipolar, omnipolar, linear
- Brushless & brushed DC motor drivers
- LED drivers (lighting, backlight, display)
- Half-bridge & high-side gate drivers
- Linear Li-ion chargers
500+ parts
Interface & Special Function
- RS-232 / RS-485 transceivers
- CAN and LIN bus transceivers
- Li-ion protection (1–4 cells) & leakage-current detectors
- Audio amplifiers
- Automotive ICs (AEC-Q100)
Darlington & optos
Arrays & Isolation
- ULN2003 / ULN2803 transistor arrays
- Photocouplers (PC817 class)
- Timers (NE555), CMOS 4000 series
Need a part not listed?
Send us your BOM. Our engineers match each line to a UTC equivalent and send datasheets and samples.
Send BOM
200+ packages
From DFN0603 to TO-247-4
Through-hole, small-signal SMD and power SMD, including TOLL and TOLT for high-current designs.
TO-92 / 126 / 220 / 247TO-252 / 263TOLL / TOLTPDFN 3×3 / 5×6DFN 8080QFN 3×3 – 5×6SOP / TSSOP / MSOPSOT-23 / 89 / 223SOT-353 / 363 / 563SOD-123 / 323 / 523SMA / SMB / SMCDIP-4 to DIP-40HSIP / HZIP
Cross reference
Search by the part number you use today
A selection of common replacements our customers already run in production. Type a competitor or UTC part number.
| Category | Original part | Brand | UTC replacement | Package |
|---|
For reference only. Always confirm electrical characteristics against the datasheet before design-in. Brand names are trademarks of their respective owners.
Applications
Proven in industrial, energy and automotive designs
Industrial customers make up about 45% of our business, consumer 38% and new-energy vehicles 13%. Each solution below lists parts already shipping to leading manufacturers.
Servo Drives & VFDs
Auxiliary power MOSFETs up to 1500 V, IGBTs and the full logic and interface set.
9N15012NM120LUTG20N65-SUC2845GUT3232GU74LVC244G
PLC & Industrial Control
60–100 parts per controller, including SGT MOSFETs and Darlington arrays for outputs.
USG80N10GUSG135N10LULN2803GUC2843BGLM339GTL431
UPS
Direct replacements for TI, ST, IR and Infineon parts across the whole board.
UTG80N654N150U3525GUC2843BGTL074UPC817CG
EV Charging Stations
Super-junction MOSFETs, 650 V / 1200 V IGBTs, leakage detection and communications ICs.
60NM65UTG50N120M54123UTRS3088UIC8099N90
SMPS, PD Fast Chargers & LED
VDMOS and super-junction MOSFETs, Schottky rectifiers and PWM controllers.
8NM6524NM6010N65MBR20100CUC3845GMC34063A
Automotive AEC-Q100
A/C compressors, LED lamps and body motors (wipers, blowers, windows, seats, pumps, EPS).
78D05AAQULE4275UCV676USG04R012M-TUTR2101ULV8622
Smart Meters
Low-power LDOs, Hall sensors, RS-485 and level translators for utility meters.
UR75XXLR9282UH81062UTRS485UTXS0108UD4606Z
Power Tools, E-bikes & BMS
Low-Rds(on) SGT MOSFETs in TOLL and PDFN5×6, gate drivers and battery monitoring support.
USG03R014M-JUSG10R015HGUTT50P10GUTR2101U74HC4051GTL494
Also supplied for AI servers and industrial PSUs, portable power stations, welding machines, battery formation equipment, home appliances, PC motherboards and printers.
Why buyers switch to UTC
A second source you can actually rely on
When a major brand goes on allocation or raises prices, UTC parts drop into the same footprint.
Drop-in replacement
Pin-to-pin compatible with industry-standard parts. No PCB change.
Supply security
Own wafer fabs and assembly plants, with capacity still expanding through 2027.
Factory pricing
Full IDM cost structure, no foundry or outsourced packaging markup.
Engineering support
Five R&D centers handle BOM matching, samples and failure analysis.
Manufacturing
Vertically integrated, from design to finished part
Three wafer fabs and two assembly & test plants in Fujian, China, run by UTC group companies.
01 · DESIGN
5 R&D centers
Taipei, Dalian, Xiamen, Wuxi and Dandong.
02 · WAFER
3 wafer fabs
6″ and 8″ lines, about 270,000 wafers per month.
03 · ASSEMBLY & TEST
2 packaging plants
Fully automated lines, 750M+ units per month in 2026.
04 · SALES
Global service
Offices and distributors in Asia, Europe and the Americas.
Fujian Fushun Microelectronics
Est. 1996, Fuzhou. Bipolar and BCD wafer fab, three 6″ lines. National "Specialized & Innovative" enterprise.
75,000 wafers / month
Fujian Fushun Gaoxin Microelectronics
Est. 2022, Fuzhou. 6″–8″ lines for analog ICs, diodes and transistors. CNY 1 billion total investment.
100,000 wafers / month
Xiamen Jishunxin Microelectronics
Est. 2011, Xiamen. Process capability down to 0.18 µm, 75,000 m² site. National high-tech enterprise.
100,000 wafers / month
Fujian Fushun Semiconductor (+ Heshun)
Est. 2005, Fuzhou. TO, SOT, SOP, DIP, PDFN and QFN packaging and test; Heshun adds HSIP/HZIP. New phase-one plant in mass production in 2026.
600M → 800M units / month
Inside our plants
We also sell wafers and bare die for selected products. Ask our team for details.
Quality
Certified for industrial and automotive supply
Every plant runs certified quality systems, and our in-house lab handles reliability testing and failure analysis.
IATF 16949Automotive quality management
ISO 9001Quality management
ISO 14001 / 45001Environment, health & safety
CNAS accreditedReliability & failure analysis lab (Sept 2026)
AEC-Q100Automotive-qualified regulators, more in progress
Automotive-grade labUnder construction for full AEC-Q qualification
Global reach
Serving 1,200+ customers in 35 countries
From global consumer electronics brands to leading inverter, power-supply and automation makers.
Asia
Taipei (HQ), Hong Kong, Singapore, Seoul, Tokyo, India, Thailand, and 12 cities in mainland China
Europe
Germany, France, Italy, Spain, UK, Poland, Turkey
Americas
USA, Canada, Mexico, Brazil
Customer base
Consumer electronics, industrial automation, power supplies, energy storage and automotive
Revenue by application (2025)
Contact
Get a quote or free samples
Send part numbers, quantities and target price. A sales engineer replies within one business day with pricing, lead time and datasheets.
- Response time
- Within one business day
- Headquarters
- Unisonic Technologies Co., Ltd., Taipei
- Website
- www.unisonic.com.tw