CT(兆龙)

Company Overview

Founded ： Registered in 2013’Feb . Major investors is from Ytec 久元電子 (6261) and

Hermes Group : Episil 漢磊 (3707).(Taiwan listed company)

Capital ： USD$ 23.5 Million

Major Business Focus ： Infrared Emitter and Detector

Photo Coupler

Visible LED

Employee ： ~270 Globally

Factory Location ： Xiamen, China, Total Capacity is 120KK/M

(CTM owner for PCB/Coupler/MOSFET)

History

2013

2014

2015

2017

2018

◎ 2013’May, CT Micro setup

◎ 2013’Nov, IR/Photo Coupler MP

◎ 2013’Dec, ISO9001:2008

◎ IR/Coupler shipped more than 10KK/M

◎ 2015’Mar, MOSFET MP

◎ 2015’July, ISO14001 and OHSAS18001

◎ 2017’Apr, ISO/TS16949 LOC

◎ 2018’Jun, IATF16949:2016

Why CT Micro

◎ People,

R&D with more than 15 years of photo coupler and infrared product

experience. Manufacturing and engineering team from Fairchild and Vishay with

more than 15 years of assembly experience.

◎ CT can design our own Photo Transistor and Diode.

◎ Professional Optical R & D with optical simulation software for quicker, precise &

high quality optical products; be it standard or customized version.

◎ Partnership with Energictek for MOSFET design/development and

complement with Episil/maxchip for high quality and stable

products.

Why CT Micro

Quality Policy

◎ Systematic Development and Production (ISO9001:2015 and IATF16949)

(IATF16949 only for IR and Photo Coupler)

◎ Green Initiatives (ISO14001 and OHSAS18001)

◎ Zero defect approach

◎ Build by Quality during development

◎ Safety House for Photo coupler(UL/VDE/CQC)

http://www.ct-micro.com/quality10.php?id=2

Smart Wear Application

For health management application,

Customer can use

blue / green / red /IR/VCSEL as emitter,

and Photo Diode as receiver per customer

requests.

Classification of Light Detector

Item	Photo Resistor	Photo Transistor	Photo Diode	Analog Light Sensor	Digital Light Sensor
Outline
Functional Block Diagram
Output Type	Resistance	Current	Current	Current	ADC Count
Response Spectral	Human Eye	Non-Human Eye	Non-Human Eye	Human Eye	Human Eye
Linearity	Poor	Good	Excellent	Excellent	Excellent
Temperature Response	Poor	Poor	Better than PT	Good	Good
Response Time	Slow	Slow	Fast	Slow	Slow
Cost	Low	Low	Low	High	High

Ambient Light Sensor

APTP1708T06

Electrical Characteristic

◎ Current output

◎ Supply voltage range from 2.5V to 5.5V

◎ Operating temperature from -40 °C to +85 °C

Optical Characteristic

◎ Spectrum close to human eye response.

◎ Very low response in infrared region.

High Performance

Ambient Light Sensor

APS1616O04

Electrical Characteristic

◎ I2C interface (400kHz/s)

◎ Supply voltage range from 1.8V to 3.6V

◎ Operating temperature from -40 °C to +85 °C

◎ ADC resolution 16-bits

Optical Characteristic

◎ R G B W IR five channel

◎ Very high sensitivity 0.001 lux

◎ Very wide dynamic range 300K lux

◎ FOV over ± 50 degree

High Accuracy

◎ Illuminance (lux) error within ± 5%

◎ Correlated color temperature (CCT)

error within ± 5%

◎ Color difference (duv) within 0.005

◎ Light source type determination

1.6*1.6*0.45mm

Proximity Sensor

New…. Low Consumption

◎ 12.5mA VCSEL driving current.

◎ Total current can be within 0.2mA

Low Crosstalk

◎ VCSEL based IR emitter w/ very small angle.

◎ Build-in optical filter to reject the crosstalk.

Small Size

◎ Package dimension is

2.84mm × 1.44mm × 0.65mm

◎ Pitch of PS & VCSEL is 0.96mm

CT DMC TM Photo Coupler

CT Micro Double-Molded Co-Plannar (DMC?)

US9,685758 B2

Features

◎ Fixed Isolation Gap

◎ Propriety Molding Compound

◎ Special Inner mold design to improve

transfer ratio

◎ Special Silicon gel for Transfer Ratio

improvement

Coupler construction

Traditional Over-Under

CT DMC ? Co-Planar

Light transfer type: face to face

Hard process than Co-planar

Light transfer type: reflection

The easiest coupler process

The coupler construction design have to follow the safety house rule. Over

tolerance, and bad process control will be caused isolate fail.

Coupler FMEA

The distance through isolation of coupler is

≧0.4mm

The product LongCreepage is one

of the super thin package. All the

tolerance are restricted by the

package limit and safety request.

High of wire bond also one of the

key inspection.

Confidential

The through distance of CT DMC ?

package is trustworthy due to the

distance has done when the lead

frame forming. There is no need to

control by process.

CT DMC TM Photo Coupler

	Pros and Cons
	ConventionalUnder Over-Under	Traditional Co-Planar	CT-DMCTM PKG
CMR 共模抑制	Normal 一般	Good 很好	Good 很好
Isolation Voltage 高壓絕緣	Unstable 不穩定	Stable & Good 穩定而且很好	Stable & Good 穩定而且很好
Process 封裝製程	Hard 困難	Easy 簡單	Easy 簡單
Outline size 外觀尺寸	High Restriction 限制多	Can go small and thinness 可以做超薄且小型化的尺寸	Can go small and thinness 可以做超薄且小型化的尺寸
Cost 成本	Low 低	High 高	Low 低

CT DFN TM Photo Coupler

Features

◎ The Max thickness is 1.5mm

(max 4.2*2.7*1.5mm for one channel)

◎ Good operating temperature range

-55 ℃ ~125 ℃

◎ External creepage >2.8mm

2.5kV/min with intenal creepage >0.4mm

◎ Low input current with Good CTR

100%~400% CTR @ I F =1mA