2-Layer 0.22mm Flexible PCB with 1.0mm FR-4 Stiffener (ENIG Finish)
1.Introduction
This advanced 2-layer flexible PCB combines a 0.22mm polyimide base with a 1.0mm FR-4 stiffener, offering exceptional durability and flexibility for modern electronics. Featuring ENIG (Electroless Nickel Immersion Gold) surface finish, this PCB is ideal for applications requiring high reliability, such as mobile phones, computers, automotive systems, and industrial equipment. Designed to meet IPC-Class-2 standards, it ensures superior performance in demanding environments.
2.Key Performance Features
Flexible Polyimide Core: Halogen-free, UL94 V-0 flammability rated, with excellent thermal and electrical properties.
Double-Sided Design: Supports high-density layouts with 5/5 mil trace/space and 0.4mm minimum hole size.
Robust Construction: Combines 0.22mm flex thickness with FR-4 stiffener (total thickness: 1.34mm).
ENIG Surface Finish: Enhances solderability and corrosion resistance.
High Peel Strength: 1.0–1.5N/mm at 90° for mechanical reliability.
RoHS & EU Compliant: Free of Pb, Hg, Cd, and other hazardous substances.
Optimized for High-Frequency Signals: Dielectric constant of 3.31–3.34 @ 10 GHz and low dissipation factor (0.0188–0.0191).
3.PCB Specifications at a Glance
| Parameter | Specification |
|---|---|
| Base Material | Flexible Polyimide |
| Layer Count | Double-Sided |
| Board Dimensions | 51mm × 35mm (±0.15mm) |
| Minimum Trace/Space | 5/5 mils |
| Minimum Hole Size | 0.4mm |
| Blind Vias | No |
| Flex Thickness | 0.22mm |
| Flex + PI Stiffener Thickness | 0.3mm |
| Flex + FR4 Stiffener Thickness | 1.34mm |
| Finished Cu Weight (Outer) | 2oz (2.8 mils) |
| Via Plating Thickness | 20μm |
| Surface Finish | ENIG (Electroless Nickel Immersion Gold) |
| Top Silkscreen | White |
| Bottom Silkscreen | No |
| Top Solder Mask | Yellow Coverlay |
| Bottom Solder Mask | No |
| Electrical Testing | 100% Tested Prior to Shipment |
4.PCB Stackup: 2-layer flexible PCB
FR4 Stiffener+PI stiffener
Copper_layer_1 - 70 μm
Adhesive Polyimide Core - 25um (1mil)
Copper_layer_2 - 70 μm
5.PCB Statistics:
Components: 12
Total Pads: 39
Thru Hole Pads: 19
Top SMT Pads: 20
Bottom SMT Pads: 0
Vias: 11
Nets: 2
6.Typical Applications
Consumer Electronics: Mobile phones, digital cameras, VCRs.
Automotive Systems: Sensors, control modules.
Industrial & Office Equipment: High-reliability PCBs for automation.
7.Quality Assurance
IPC-Class 2 compliant
100% electrical tested
Global availability
Gerber RS-274X support