CSP MOSFET Technical Support : FAQ

Frequently Asked Questions

Q1: How to mount CSP?

It is possible to mount it like a normal resin-sealed package.
However, please pay attention to equipment precision due to the device package is small.

Mount flow

Mount flow of CSP MOSFET
CSP Mounting Application Note

Q2: Do require any special mount technic for CSP?

It is possible to mount it like a normal resin-sealed package.
We carried out necessary SMT (such as self-alignment, void, coplanarity, pick-up load test,etc.) for all type of CSP. Please contact us for any unclear points regarding CSP mount.

Q3: Is the mechanical strength weak?

No and we performed mechanical strength test(several type of bending tests) for all type of packages.

Mechanical strength limit value test video

Mechanical strength limit value test video Mechanical strength limit value test

Q4: What is difference in heat dissipation compared to resin sealed package?

The resin package has a lead frame and a wire in the thermal path which may impede heat dissipation.
Contrarily,there is no lead frame nor wire for CSP which bringing better thermal performance.
You can find thermal resistance and current rating information in datasheet.

Thermal evaluation

Thermal evaluation of Resin sealed PKG
Thermal evaluation of CSP

*In case package size is same

Q5: Can MOSFET be used in case exceeding the current rating?

We have defined ’Thermal resistance’, ’Power dissipation’ and ’Current rating’ by using own evaluation board. Power dissipation is greatly depend on the PCB thermal performance.
We recommend customer to evaluate thermal by using your actual board and make sure MOSFET junction temperature be lower than 150℃ in all condition.

Q6: Are spice parameters available?

You can find spice parameter from our website.
Please find it from specific part homepage. If can’t. please contact us.

Q7: Please provide environmental substances information.

CSP is completely lead free and conforms to RoHS.
To obtain RoHS / REACH, please click the corresponding part number.
If can’t. please contact us.

Q8: Can’t find a part meet my spec requirement, can I ask custom design?

Please send inquiry from the following page.

Others

For questions that are not posted, please contact us from the following.