Rev Date: 8/30/2022

10

www.seielect.com

This specification may be changed at any time without prior notice.

marketing@seielect.com

Please confirm technical specifications before you order and/or use.

LWF Series

Ferrite Wirewound Inductor

Stackpole Electronics, Inc.

Resistive Product Solutions

Reflow Chart:

Mechanical Performance Test

Climatic Test

Test

Test Specification

Test Condition

Solderability

The electrodes shall be at least 90%

covered with new solder coating

Lead-free inductor: after fluxing (alpha 100 or equivalent), inductor

shall be dipped in a melted solder bath at 245±5°C, 5±0.5 seconds

Resistance to Soldering Heat

Appearance: No damage

Pre-heating: 150°C, 1 minute

Solder Temperature: 260±5°C

Immersion Time: 10±1 seconds

Test device shall be soldered on the substrate

Oscillation Frequency: 10 to 55 to 10Hz for 1 minute

Amplitude: 1.5 mm

Time: 2 hours for each axis (X, Y and Z), total 6 hours

Vibration

Appearance: No damage

L change: within ±10%

Q change: within ±30%

DCR: within specification

Test

Test Specification

Test Condition

One Cycle:

Total: 100 cycles

Measured after exposure in the room condition for 24 hours

Temperature: 40 ± 2°C

Relative Humidity: 90~95%

Time: 1000 hours

Measured after exposure in the room condition for 24 hours

Temperature: 85 ± 3°C

Applied current: Rated current

Time: 1000 hours

Measured after exposure in the room condition for 24 hours

Temperature : -25 ± 3°C

Time: 1000 hours

Measured after exposure in the room condition for 24 hours

Storage Temperature: 25 ± 3°C. Humidity < 80% R.H.

Operating Temperature Range: -40 ~ +85 °C

Appearance: No damage

L change: within ± 10%

Q change: within ± 30%

DCR: within specification

High Temperature Storage

Low Temperature Storage

Temperature Cycle

Damp Heat with Load

Step

Temperature (°C) Time (min.)

1

-25 ± 3

30

2

25 ± 2

3

3

85 ± 3

30

4

25 ± 2

3