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AAA3528AVU-AZGKSYKCT Arkusz danych(PDF) 7 Page - Kingbright Corporation |
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AAA3528AVU-AZGKSYKCT Arkusz danych(HTML) 7 Page - Kingbright Corporation |
7 / 8 page SPEC NO: DSAO7006 REV NO: V.2B DATE: APR/15/2016 PAGE: 7 OF 8 APPROVED: Wynec CHECKED: Allen Liu DRAWN: J.L.Liang ERP: 1102015372 Application Notes Introduction Kingbright AAA3528AVU series are surface-mounted right-angle light-emitting diode (LED) circuit- board indicators. It offers the convenience of surface-mount production while offering the right-angle height profile of circuit-board indicator lamps. The part is suitable for automated SMT and lead-free reflow soldering production. The clear silicone lens extends out to provide broad viewing angles. When installed on customer’s circuit board, it can provide illuminated indication or backlight panel indicators. Transport and Storage Surface mount devices (SMD) are moisture sensitive components. atmospheric moisture will seep into the component package, so when placed on the circuit board for 160-200°C reflow soldering, the high temperatures cause the absorbed moisture to vaporize and rapidly expand, creating vapor pressure that could damage the LED component by causing cracks in the lens, delamination of the chip and wire bonds, or other reliability issues. 1. Transportation The product is packed in anti-static, moisture-proof mylar bags. The package should be carefully handled to avoid external pressure and accidental puncture during transport.Proper anti-static practices should be in place. If package leakage or damage is found before opening, suggest customer take the damaged package off-line for additional testing and bake to dry before use. 2. Storage Conditions (Before Opening) To prevent moisture-absorption reliability issues, the parts must be properly stored. Suggest do not open the moisture-proof package until immediately before usage (except for sample inspection purposes).The opened package must be re-sealed with fresh desiccant and humidity indicator and Stored in a dry box (<30℃/60% RH). 3. Humidity Control (After Opening) After opening the moisture-proof packaging, immediately check the humidity indicator card contained inside to confirm the parts have been exposed to excess moisture.The production environment should follow IPC/JEDEC J-STD-020 standards for temperature,humidity, and exposure time. SMD environmental exposure time accumulates as long as the parts are outside the packaging, unless they are being baked dry. Table 1: IPC/JEDEC J-STD-020 Moisture Sensitivity Levels (MSL) MSL Allowed Exposure After Opening Time Conditions LEVEL 1 No Limit ≦ 30℃/85%RH LEVEL 2 1 Year ≦ 30℃/60%RH LEVEL 2a 4 Weeks ≦ 30℃/60%RH LEVEL 3 168 Hours ≦ 30℃/60%RH LEVEL 4 72 Hours ≦ 30℃/60%RH LEVEL 5 48 Hours ≦ 30℃/60%RH LEVEL 5a 24 Hours ≦ 30℃/60%RH LEVEL 6 Immediately upon open ≦ 30℃/60%RH 4. Storage of Unused And Remaining Parts If the full reel was not consumed during production, the production environment was within limits (<30℃/60% RH), and the exposure time did not exceed the limits in Table 1, then the remaining parts may be stored as below: Re-sealed with desiccant. Stored within a dry box (5% RH). The dry box storage time would not count against the total exposure time. When the stored parts are taken out, the exposure time is accu- mulated from the previous production run. |
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