Multilayer Ferrite Chip Inductor

MERITEK

CFB Series

RoHS

Electrical Performance Test

Item

Requirement

Test Method

Inductance

Refer to standard electrical

characteristic spec.

HP4291B

Q

HP4291B

SRF

HP4291B

DC Resistance RDC

Agilent 34401A

Rated Current IDC

Applied the current to coils, The inductance change should be

less than 10% to initial value

Mechanical Performance Test

Item

Requirement

Test Method

Resistance to

Soldering Heat

Appearance: No damage

More than 75% of the terminal.

Electrode should be covered with solder.

Inductance: within ±15% of initial value

Q: within ±30% of initial value

Inductance: within±20% of initial value

(0603 over 12uH)

Pre-heating: 150°C, 1min.

Solder Composition: Sn/Ag3.0/Cu0.5 (Pb-Free)

Solder Temperature: 260±5°C (Pb-Free)

Immersion Time: 10±1 sec.

Solderability

The electrodes shall be at least 90%

covered with new solder coating

Pre-heating: 150°C, 1min.

Solder Composition: Sn/Ag3.0/Cu0.5 (Pb-Free) Solder

Temperature: 245±5°C (Pb-Free)

Immersion Time: 4±1 sec.

Flexure Strength

The forces applied on the right

conditions must not damage the terminal

electrode and the ferrite.

Test device shall be soldered on the substrate

Substrate Dimension: 100x40x1.6 mm

Deflection: 2.0 mm

Keeping Time: 30 sec.

*For 0402, substrate dimension is 100x40x0.8 mm

Vibration

Test device shall be soldered on the substrate

Oscillation Frequency: 10 to 55 to 10Hz for 1 min.

Amplitude: 1.5 mm

Time: 2 hrs for each axis (X, Y & Z), total 6 hrs

Climatic Test

Item

Requirement

Test Method

Damp Heat with Load

Appearance: No damage

L change: within±10% of initial value

Q change: within±30% of initial value

Temperature: 40±2°C

Relative Humidity: 90 ~ 95%

Time: 1000 hrs

Measured after exposure in the room condition for 24 hrs

Temperature Cycle

One cycle:

Step

Temperature (°C)

Time (min.)

1

-25±3

30

2

25±2

3

3

85±3

30

4

25±2

3

Total: 100 cycles

Measured after exposure in the room condition for 24 hrs

High Temperature

Resistance

Temperature: 85±3°C

Relative Humidity: 20%

Applied Current: Rated Current

Time: 1000 hrs

Measured after exposure in the room condition for 24 hrs

Low Temperature

Resistance

Temperature: -25±3°C

Relative Humidity: 0%

Time: 1000 hrs

Measured after exposure in the room condition for 24 hrs