product
wlm1
characteristic
● lead-free compatible and halogen-free material
● high tg: 200℃ (dma)
● white led with high reflectivity of visible light
● less discoloration after heat treatment and light irradiation
application area
● suitable for led, cob, ic package material, mini led and etc.
- product performance
- product certificate
- data download
| items | condition | unit | typical value |
|---|---|---|---|
| whiteness | internal standard |
% |
88 |
|
tg |
dma |
℃ |
200 |
| td | 5% wt. loss | ℃ | 374 |
|
t288 |
tma | min | ＞60 |
| t260 | tma |
min |
＞60 |
|
thermal stress |
288℃, solder dip |
- | pass |
| cte (z-axis) | before tg | ppm/℃ | 20 |
| after tg | ppm/℃ | 125 | |
| 50-260℃ | % | 1.2 | |
|
cte (x/y-axis) |
wrap-α1 |
ppm/℃ |
11-13 |
|
fill--α1 |
ppm/℃ |
11-13 | |
| arc resistance | d-48/50 d-0.5/23 | s | 180 |
| dielectric breakdown | d-48/50 d-0.5/23 | kv | 45 kv nb |
| peel strength (1oz) | 288℃/10s | n/mm | 0.93 |
| flexural strength(lw/cw) | a | mpa | 480/370 |
| water absorption | e-1/105 d-24/23 | % | 0.08 |
|
flammability |
c-48/23/50 |
rating |
hb |
remarks:
1. specimen thickness: 1.0mm. test method is according to ipc tm-650.
2. all the typical values listed above are for your reference only and not intended for specification. please contact shengyi technology co., ltd. for detailed information. all rights from this data sheet are reserved by shengyi technology co., ltd.
explanation:c=humidity conditioning, d=immersion conditioning in distilled water,e=temperature conditioning
the first digit following the letter indicates the duration of preconditioning in hours, the second digit the preconditioning temperature in ℃ and the third digit the relative humidity.