Cosmo (冠西) Automotive Photocouplers

About Automotive Photocouplers

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

As an authorized distributor of Cosmo (冠西), BeiLuo provides a comprehensive range of Automotive Photocouplers products. These products are widely used in industrial control, automotive electronics, consumer electronics, and communication equipment. We offer a complete product line with multiple series to meet various application requirements. All products are genuine and original, backed by professional technical support and comprehensive after-sales service.

Selection Guide: How to Choose the Right Automotive Photocouplers

Product List

6 products available

Part Number ↕	Output Type ↕	Isolation Voltage ↕	CTR ↕	Forward Voltage ↕	Forward Current ↕	Package ↕	Stock Status	Action
KAQ1010A	Transistor	2500Vrms	50-300% (automotive grade)	1.2V typical	50mA max	SOP-4	In Stock	View Details
KAQ2010A	Transistor	5000Vrms	50-300% (automotive grade)	1.2V typical	50mA max	SOP-6	In Stock	View Details
KAQ5010A	Darlington	2500Vrms	100-300% (automotive grade)	1.2V typical	60mA max	SOP-6	In Stock	View Details
KAQ6N138A	Open Collector	2500Vrms	-	1.4V typical	20mA max	SOP-8	In Stock	View Details
KAQ3053A	Triac (Zero-Cross)	2500Vrms	-	1.2V typical	60mA max	SOP-6	In Stock	View Details
KAQ214A	MOSFET	2500Vrms	-	-	-	SOP-4	In Stock	View Details

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Frequently Asked Questions

What is AEC-Q100 qualification?

AEC-Q100 is the automotive industry standard for integrated circuit qualification. It includes stress tests like HTOL, temperature cycling, and ESD testing. Grade 1 (-40°C to +125°C) is required for under-hood applications. Guanxi automotive photocouplers meet these stringent requirements.

Specify AEC-Q100 Grade 1 for automotive under-hood.

What isolation voltage is needed for EV BMS?

EV battery management systems typically require 5000V isolation between high-voltage battery and low-voltage control circuits. Guanxi KAQ series provides this high isolation with AEC-Q100 qualification. Always verify against your specific safety requirements.

Use 5000V isolation for EV BMS applications.

Are PPAP documents available?

Yes, Cosmo provides PPAP Level 3 documentation for automotive customers. This includes design records, test results, process studies, and other required documentation. Contact BeiLuo to request PPAP packages for your automotive projects.

Request PPAP Level 3 for automotive production.

What temperature range do automotive photocouplers support?

Guanxi AEC-Q100 Grade 1 photocouplers support -40°C to +125°C operating temperature. This covers under-hood, battery pack, and cabin applications. Some models extend to +150°C for extreme environments. Verify specific model ratings.

Grade 1 (-40°C to +125°C) for most automotive.

How many photocouplers are used in a typical BMS?

A typical EV BMS uses 12-24 photocouplers: cell monitoring (1 per 12-16 cells), contactor control (2-4), current sensing (1-2), isolation monitoring (1-2), communication (2-4). A 96-cell pack typically uses ~24 photocouplers total.

Plan for 12-24 photocouplers depending on configuration.