Cosmo (冠西) Distributor

Taipei, Taiwan
Founded

Cosmo (冠西) Electronics is a leading global manufacturer of photocouplers, solid state relays, and reed relays. Founded in 1981 and listed on Taiwan Stock Exchange (TSEC: 2466) in 2001.

Founded
50+
Years Experience
Global
Presence

Core Product Areas

Photocouplers (Optocouplers)

High-performance photocouplers for signal isolation including transistor output, Darlington, triac, and high-speed types.

Solid State Relays (SSR)

High-reliability solid state relays for AC and DC switching with MOSFET and Triac outputs.

Reed Relays

High-quality reed relays and reed sensors for switching and sensing applications with hermetically sealed contacts.

Automotive Photocouplers

AEC-Q100 qualified photocouplers for automotive applications including BMS and charging systems.

Solutions & Applications

Tailored solutions for your industry needs

Complete isolation solutions for PLCs, motor drives, and industrial control systems with 2500V-5000V isolation voltage.

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Isolation solutions for SMPS, battery chargers, and DC-DC converters with feedback loop isolation and primary-secondary communication.

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High-reliability isolation solutions for battery management systems in electric vehicles and energy storage systems.

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High-reliability SSR solutions for AC/DC switching applications with long life and silent operation.

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Latest Technical Support

Expert resources to help you succeed

guides

Photocoupler Selection and Application Guide

This guide covers everything you need to know about selecting Cosmo photocouplers, including isolation voltage requirements, output type selection, CTR calculations, PCB layout recommendations, and application examples for industrial, automotive, and consumer electronics.

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guides

Solid State Relay Application Guide

This guide covers SSR selection criteria including load type, current rating, thermal design, protection circuits, and application examples for heating, motor, and lighting control.

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guides

Automotive Application Guide

This guide covers automotive qualification requirements, isolation design for high-voltage systems, BMS applications, and compliance with AEC-Q100 and automotive standards.

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guides

PCB Layout Guidelines for Isolation

This guide covers PCB layout requirements for maintaining isolation integrity, including creepage/clearance calculations, slot design, trace routing, and examples for 2500V and 5000V isolation.

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Frequently Asked Questions

What is Cosmo (冠西) Electronics known for?

Cosmo Electronics (冠西电子) is a world-leading manufacturer of photocouplers (optocouplers), solid state relays (SSR), and reed relays. Founded in 1981 in Taiwan and listed on TSEC (stock code: 2466) in 2001, the company has over 40 years of expertise in optoelectronic components. As your authorized Cosmo distributor, BeiLuo provides comprehensive technical support and selection guidance.

Choose Cosmo for high-quality optocouplers and relays.

What are the main product categories of Cosmo?

Cosmo's main product categories include: 1) Photocouplers (Optocouplers) - transistor output, Darlington output, triac output, and high-speed types

2) Solid State Relays (SSR) - MOSFET output and triac output types for AC/DC switching

3) Reed Relays - for switching and sensing applications. These products are widely used in industrial automation, power supplies, automotive, and consumer electronics.

Select based on your isolation or switching requirements.

Does Cosmo provide automotive-grade products?

Yes, Cosmo provides automotive-grade products certified to IATF 16949 standards. These products meet the stringent quality and reliability requirements for automotive applications including battery management systems, automotive lighting, and vehicle electronics. Contact BeiLuo FAE team for automotive product selection.

Specify automotive-grade parts for vehicle applications.

What certifications does Cosmo maintain?

Cosmo maintains ISO 9001 (Quality Management), ISO 14001 (Environmental Management), and IATF 16949 (Automotive Quality) certifications. Their products are also UL recognized and VDE certified, ensuring compliance with international safety standards. Contact BeiLuo for certification documentation.

Certifications ensure quality and safety compliance.

What is the typical lead time for Cosmo products?

Standard lead times for Cosmo products are typically 8-12 weeks for production quantities. Many popular products are available from stock with shorter lead times. As your authorized Cosmo distributor, BeiLuo maintains inventory of fast-moving items. Contact BeiLuo sales team for current availability and scheduled delivery.

Plan 10-week lead time for production orders.

What industries does Cosmo serve?

Cosmo products serve a wide range of industries including industrial automation, power supplies, battery management systems, automotive electronics, home appliances, security systems, and medical equipment. Their optocouplers and relays provide reliable isolation and switching solutions across these applications.

Cosmo products suitable for multiple industries.

How do I select the right Cosmo photocoupler?

Selecting the right photocoupler depends on: 1) Output type - transistor, Darlington, or triac

2) Isolation voltage - typically 2500V to 5000V

3) Current transfer ratio (CTR)

4) Speed - standard or high-speed

5) Package type - DIP or SMD. Contact BeiLuo FAE team for selection guidance and technical support.

Consider output type, isolation voltage, CTR, and speed.

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