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FPCBs are used widely in everyday technology and electronics in addition to high-end, complex completed components. Two of the most prominent examples of flexible circuit usage is in modern portable electronics, devices, hard disk drives and desktop printers.
Flexible circuits are also used extensively in other applications and industries including:
Communications
Consumer Electronics
Automotive
Medical
Industrial
Aerospace
Military
Transportation
No. | Item | Description |
1 | Layer | Flex board: 1-6Layers |
Flex-Rigid Board: 2-8Layers | ||
2 | Material | CCL, PI, PET, PEN, FR-4 |
3 | Final Thickness | Flex board: 0.002" - 0.1" (0.05-2.5mm) |
Flex-rigid board: 0.0024" - 0.16" (0.06-4.0mm) | ||
4 | Surface Treatment | Lead-free: ENG Gold; OSP, Immersion silver, Immersion Tin |
5 | Min Trace | Inner: 0.5oz: 4/4mil Outer: 1/3oz-0.5oz: 4/4mil |
6 | Min Width /Clearance | 1oz: 5/5mil 1oz: 5/5mil |
2oz: 5/7mil 2oz: 5/7mil | ||
7 |
Min Hole Ring | Inner: 0.5oz: 4mil Outer: 1/3oz-0.5oz: 4mil |
1oz: 5mil 1oz: 5mil | ||
2oz: 7mil 2oz: 7mil | ||
8 | Copper Thickness | 1/3oz - 2oz |
9 | Max / Min Insulation Thickness | 2mil/0.5mil (50μm/12.7μm) |
10 | Min Hole Size and Tolerance | Min hole: 8mil |
Tolerance: PTH±3mil, NPTH±2mil | ||
11 | Min Slot | 24mil x 35mil (0.6x0.9mm) |
12 | Solder Mask Alignment Tolerance | ±3mil |
13 | Silkscreen Alignment Tolerance | ±6mil |
14 | Silkscreen Line Width | 5mil |
15 | Gold Plating | Nickel: 100μ" - 200μ" Gold: 1μ"-4μ" |
16 | Immersion Nickel / Gold | Nickel: 100μ" - 200μ" Gold: 1μ"-5μ" |
17 | Immersion Silver | Silver: 6μ" - 12μ" |
18 | OSP | Film: 8μ" - 20μ" |
19 | Test Voltage | Testing Fixture: 50-300V |
20 |
Profile Tolerance of Punch | Accurate mould: ±2mil |
Ordinary mould: ±4mil | ||
Knife mould: ±8mil | ||
Hand-Cut: ±15mil |
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