Second SourceFounded in 2011

Analog & mixed-signal ICs,
second-sourced for you

TDSEMIC designs and supplies LDO regulators, DC-DC controllers, TVS/ESD protection, discrete semiconductors, display drivers and interface ICs. 1,698 part numbers across 8 product lines, with pin-to-pin replacements for widely used imported devices.

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Pin-to-pin second source Sample in 1 business day Full BOM quotation

1,698

Part numbers in stock list
Across 8 product lines

1,457

Mass-production parts
2026 Q2 selection guide

2011

Founded in 2011
Analog & mixed-signal focus

30+

Franchised suppliers
3000+ customers served

1,698

Part numbers in stock

Product lines

Eight product lines, 1,698 part numbers

From power management to microcontrollers — one supplier for the analog and discrete side of your BOM.

Hot Picks

Popular product picks

A few hand-picked in-stock part numbers — one click to reference prices and parameters.

Lock onto a part in seconds

Pick a category, then filter on real parameters — package, spec and reference price side by side.

Applications

Ten application areas

Our parts ship in volume across industrial, communications, consumer and other sectors — a competitive second source for every one of them.

Automotive Electronics

AEC-Q100 / AEC-Q101 qualified devices for on-board charging (OBC), BMS sensing and protection, body control modules and in-vehicle displays.

HT7150H-TD high-voltage LDOSMCJ series TVSCAN transceiversCA automotive MOSFETs

Industrial Control

Wide-temperature (−40 to +85 °C), high-voltage analog and discrete devices for PLCs, inverters, servo drives and industrial power supplies.

RS-485/RS-422 transceiversTL431 voltage referenceHigh-voltage MOSFETsBridge rectifiers

Power & Charging

A complete power chain — AC-DC controllers, DC-DC switching regulators and downstream LDO regulation — with reference designs.

OB2269 AC-DC controllerDC-DC step-down ICsHT75xx LDO familySchottky diodes

Consumer Electronics

Small package, low cost and high consistency for toys, chargers, power banks and other consumer end products.

SS8050 / SS8550 transistors1N4148 switching diodesSOD-123 devicesESD protection

Smart Appliances

One-stop display driver + touch sensing + MCU packages that simplify panel design and reduce BOM cost.

HTM1620 LED driverHT1621B LCD driverTD223B touch controllerSegment display drivers

Communication Equipment

EIA/TIA-compliant interface devices covering industrial fieldbus, equipment interconnection and network terminals.

MAX3232 RS-232MAX485 RS-485CAN transceiversTVS port protection

Security & Surveillance

Port protection and power solutions for cameras, access control and DVRs, with an emphasis on surge immunity and long-term reliability.

SMBJ / SMCJ TVSPESD ESD arraysLow-dropout LDOsMOSFET switches

Instrumentation

Segment LCD drivers, precision op amps and voltage references for the accuracy and display requirements of meters and instruments.

HT1622 segment LCD driverPrecision op ampsTL431 referenceShift registers

Solar & Energy Storage

High-voltage device solutions for PV inverters, energy storage converters and EV chargers, covering the rectification, conversion and protection chain.

40HFR fast-recovery diodesHigh-voltage power MOSFETsBridge rectifiersHigh-voltage TVS

Medical Electronics

Low-power, low-noise analog front ends and high-precision sensor interfaces for portable medical devices and monitoring instruments.

Low-power op ampsADC / DACTemperature sensorsLow-noise LDOs

Hover any sector to expand the details, or click to pin it open (touch supported).

Why TDSEMIC

Why choose TDSEMIC

IDM-style in-house capability + a curated portfolio of partner brands + lab-grade quality systems, for a dependable domestic supply line.

IDM-style full-chain capability

Covering wafer design, fabrication and IC packaging & test through to chip solution development and sales — a complete service from design to delivery, including custom ASIC programs.

Brand + distribution dual model

Our own products run alongside 30+ domestic brands we distribute, with 1,698 in-stock part numbers you can source in one BOM — reducing selection and procurement cost.