Service Hours: Monday to Friday,Saturday: Guangfu Road branch only, Closed on Sundays and public holidays. For specific hours, please see details for each branch.
All marked prices are tax-inclusive and in TWD. Free shipping for purchases over 1200 (mainland Taiwan).
Language: English Centenary Materials Co., Ltd.
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Categories Centenary Materials Co., Ltd.
02 Batteries & Chargers & Spot Weldings Centenary Materials Co., Ltd.
03 Cables / Wires & Accessories Centenary Materials Co., Ltd.
05 Capacitors Centenary Materials Co., Ltd.
06 Computer Accessories Centenary Materials Co., Ltd.
07 Cable Assembly Centenary Materials Co., Ltd.
09 RF Cable & RF Antenna & Coaxial Connectors & Tools Centenary Materials Co., Ltd.
10 Multipole-Connectors & Tools Centenary Materials Co., Ltd.
11 Terminals, Test Leads & Spring Probes Centenary Materials Co., Ltd.
13 Circular & Rectangular Heavy-Duty Industrial Connectors Centenary Materials Co., Ltd.
18 Fuses & Circuit Protections Centenary Materials Co., Ltd.
21 Lighting, Lamps & Torches Centenary Materials Co., Ltd.
23 Optoelectronics & Indicators Centenary Materials Co., Ltd.
27 Power Supplies & UPS Centenary Materials Co., Ltd.
29 Relays & Solenoids Centenary Materials Co., Ltd.
30 Resistors & Potentiometers Centenary Materials Co., Ltd.
31 Discretes, TVS, Traics, SCRs & Diacs Centenary Materials Co., Ltd.
47 Soldering & Desoldering Centenary Materials Co., Ltd.
49 Inductors & Filters Centenary Materials Co., Ltd.
50 Switches & Control Gear Centenary Materials Co., Ltd.
52 Timers, Counters & Hour Meters Centenary Materials Co., Ltd.
54 MPU Programmers & Development Tools Centenary Materials Co., Ltd.
57 Logic Analysis, EPROM Programmers & IC Test Sockets Centenary Materials Co., Ltd.
58 Multimeters & Panel Meters Centenary Materials Co., Ltd.
59 Oscilloscopes, Signal Generators & Frequency Counter Centenary Materials Co., Ltd.
62 Lubricants & Greases Centenary Materials Co., Ltd.
66 Fasteners, Fixings & Snap Rivets Centenary Materials Co., Ltd.
68 Hand Tools & Kits Centenary Materials Co., Ltd.
76 Enclosures, Storage & Tool Cases Centenary Materials Co., Ltd.
80 New Products Centenary Materials Co., Ltd.
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Photocouplers

Photocouplers, also known as optocouplers, are electronic components used to transfer electrical signals between two isolated circuits using light. By combining an infrared emitting diode and a photosensitive receiver, these devices provide critical galvanic isolation that protects sensitive low-voltage circuitry from high-voltage transients and reduces ground loop interference. They are commonly integrated into switch-mode power supplies, industrial controllers, and communication interfaces to ensure signal integrity and system safety. When selecting a photocoupler, key considerations include the current transfer ratio (CTR), which defines the efficiency of the signal transmission, and the isolation voltage rating. Users should also evaluate the response time for high-speed data applications and the package type, such as DIP or SMD, to meet specific PCB layout requirements. Additionally, the number of channels per package and the output configuration are essential factors for ensuring compatibility with the target circuit design. Centenary Materials offers in-stock supply, fast quotation and sourcing service for parts not currently listed.
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