25

PREHEAT & SOLDERING

The rate of preheat in production should not exceed 4°C/ second and a

recommended maximum is about 2°C/second. Temperature differential

from preheat to soldering should not exceed 100°C.

For further specific application or process advice, please consult KYOCERA

AVX.

COOLING

After soldering, the assembly should preferably be allowed to cool naturally.

In the event of assisted cooling, similar conditions to those recommended

for preheating should be used.

HAND SOLDERING & REWORK

Hand soldering is permissible. Preheat of the PCB to 150°C is required.

The most preferable technique is to use hot air soldering tools. Where a

soldering iron is used, a temperature controlled model not exceeding 30

watts should be used and set to not more than 260°C.

CLEANING RECOMMENDATIONS

Care should be taken to ensure that the devices are thoroughly cleaned

of flux residues, especially the space beneath the device. Such residues

may otherwise become conductive and effectively offer a lossy bypass

to the device. Various recommended cleaning conditions (which must be

optimized for the flux system being used) are as follows:

Cleaning liquids.....................i-propanol, ethanol, acetylacetone, water and

other standard PCB cleaning liquids.

Ultrasonic conditions............power-20w/liter max.

frequency-20kHz to 45kHz.

Temperature .........................80°C maximum (if not otherwise limited by

chosen solvent system).

Time .......................................5 minutes max.

STORAGE CONDITIONS

Recommended storage conditions for Accu-P® prior to use are as follows:

Temperature .........................15°C to 35°C

Humidity ................................ ≤65%

Air Pressure ..........................860mbar to 1060mbar

RECOMMENDED REFLOW SOLDERING PROFILE

COMPONENTS WITH SNPB TERMINATIONS

RECOMMENDED REFLOW SOLDERING PROFILE LEAD

FREE COMPONENTS WITH SN100 TERMINATIONS

330

260

250

200

150

100

50

0

Time

0:00

0:43

1:28

2:10

2:53

3:36

4:19

5:02

5:48

6:29

Peak Temperature = 260ºC

022321

Thin-Film RF/Microwave Capacitor Technology

Application Notes

Accu-P® Series

– rf microwave products –

The Important Information/Disclaimer is incorporated in the catalog where these specifications came from or

available online at www.avx.com/disclaimer/ by reference and should be reviewed in full before placing any order.