Flexible Absorbent Material(FAM)
Feature
- Provide effective EMI suppression in a wide frequency range (10MHz to 25GHz)
- Ultra thin and extremely flexible, can be freely arranged in space
- Non-conductive adhesive backing (UL Recognized) available
- Effective in preventing resonance and suppressing coupling
- High surface resistance (106 -109 ohms)
- Easy and fast to process
- Can be cut any shape easily
Application
Notebooks, PCs, workstations、LNBs for satellite systems、Mobile communications equipment、Base Stations for mobile phones and PHS、Peripheral devices for computers、Wireless equipment、Mobile Phones, PHS、High speed clocks、RFID (Radio Frequency Identification) systems.
Application for RFID
Besides the application of EMI, FAM can be a solution for RFID on metal also. It suitable for LF(125KHz) and HF(13.56MHz) bands. It can deal with the malfunction problems when RFID Reader/Writer or RFID tag attached on metal (recover maximum 80% efficiency of the original distance). By this way can save more space from RFID to metal.
RFID reader
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RFID tag only |
RFID tag + metal |
RFID tag + FAM + metal |
| 100% original distance | 5% max original distance | 80% max original distance |
| Material List : | |||||
| Property | Unit | FAM1 | FAM2 | FAM3 | Test Method |
Operating Temperature |
oC |
-20 ~ +80 |
-20 ~ +150 |
-20 ~ +80 |
- |
Applicable Frequency |
GHz |
0.01 - 8 |
1 - 25 |
0.1 - 18 |
- |
Thickness Range |
mm |
0.2 - 2.5 |
0.5 - 3.0 |
0.25 - 0.75 |
- |
Max. Dimension |
mm |
400 x 400 |
200 x 200 |
400 x 400 |
- |
Surface Resistance |
ohm |
106 |
106 |
109 |
ASTM D257 |
Hardness |
Shore A |
90 |
86 |
95 |
ASTM D2240 |
Specific Gravity |
g/cm3 |
3.6 |
3.8 |
4.8 |
ASTM D792 |
Elongation |
% |
10.4 |
421 |
51 |
ASTM D412 |
Tensile Strength |
Kgf/cm2 |
25 |
23 |
101 |
ASTM D412 |
Thermal Conductivity |
W/m-k |
1.2 |
2.0 |
1.3 |
ASTM D5470 |
RoHS Compliance |
- |
|
|
|
- |
Flame Retardant |
- |
UL94V-0 |
- |
- |
- |
| Item | 0.9 GHz | 1.8 GHz | 2.4 GHz | Application Examples | |
FAM1 |
0.20mm |
-0.22dB (4.93%) |
-0.35dB (7.74%) |
-0.50dB (10.87%) |
[Shielding Box] |
0.25mm |
-0.40dB (8.80%) |
-0.63dB (13.50%) |
-0.84dB (17.58%) |
||
0.33mm |
-0.90dB (18.72%) |
-1.25dB (25.01%) |
-1.56dB (30.18%) |
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0.60mm |
-1.32dB (26.22%) |
-1.49dB (28.91%) |
-1.75dB (33.22%) |
||
1.0mm |
-1.70dB (32.36%) |
-2.35dB (41.78%) |
-3.04dB (50.30%) |
||
1.5mm |
-2.51dB (43.90%) |
-3.32dB (53.44%) |
-3.85dB (58.79%) |
||
2.0mm |
-3.31dB (53.34%) |
-4.21dB (62.07%) |
-4.66dB (65.82%) |
||
2.5mm |
-4.46dB (64.18%) |
-5.79dB (73.62%) |
-5.64dB (73.35%) |
||
FAM2 |
|
[LNB] [GPS] [ETC] |
|||
FAM3 |
0.25mm |
-0.25dB (5.59%) |
-0.57dB (12.29%) |
-0.90dB (18.72%) |
[Mobile Phone] |
0.50mm |
-0.46dB (9.86%) |
-0.88dB (18.34%) |
-1.32dB (26.22%) |
||
0.75mm |
-0.97dB (20.01%) |
-1.42dB (27.89%) |
-2.20dB (39.74%) |
||
| ＊Test result will vary when different application. | |||||
| Examples for Sheet Shape : | ||||
Wrap around cable |
Apply to flat cable |
Apply to IC top |
Apply between ICs |
Apply to case and between boards |
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| Return Loss – Frequency : | ||||||||||||||
Return Loss (dB) |
0.5 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
15 |
20 |
30 |
Absorb Rate (%) |
11 |
21 |
47 |
50 |
60 |
69 |
75 |
80 |
86 |
89 |
90 |
97 |
99 |
99.9 |
| FAM1 (0.2 - 0.6mm) | FAM1 (1.0 - 2.5mm) | FAM3 (0.25 - 0.75mm) | FAM2 |
|
 |
 |
 |
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Item | FT0302 | FT0504 | FT0705 | FT0906 | FT1107 | FT1309 | FT1510 |
OD(mm) |
3.0 |
5.0 |
7.0 |
9.0 |
11.0 |
13.0 |
15.0 |
|
ID(mm) |
2.0 |
4.0 |
5.0 |
6.0 |
7.0 |
9.0 |
10.0 |
 |
Item | FP1502 | FP2002 | FP2702 | FP3202 | FP3702 | FP4202 | FP5202 |
OD(mm) |
15 |
20 |
27 |
32 |
37 |
42 |
52 |
|
ID(mm) |
13 |
18 |
25 |
30 |
35 |
40 |
50 |
Test Example : Notebook + FAM ( before and after)＊mouse over |
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