FFC, FPC (Flat Flexible) Connectors

Part Number	Description / PDF	Quantity
AYF533865TA Panasonic	CONN FPC 38POS 0.5MM SMD R/A	496
AYF331135A Panasonic	CONN FPC 11POS 0.30MM SMD R/A	295
AYF330735 Panasonic	CONN FPC 7POS 0.30MM R/A	45040
AYF533235 Panasonic	CONN FFC FPC 32POS 0.50MM R/A	4338
AYF530365TA Panasonic	CONN FPC 3POS 0.5MM SMD R/A	97
AYF425035 Panasonic	Y4BH FPC .4MM 50 PIN CONN 85/90	0
AYF351525A Panasonic	CONN FPC TOP 15POS 0.3MM SMD R/A	2242
AYF333935A Panasonic	CONN FPC 39POS 0.30MM R/A	481
AYF332735A Panasonic	CONN FPC 27POS 0.30MM R/A	244
AYF332335 Panasonic	CONN FPC 23POS 0.30MM R/A	4353
AYF336135 Panasonic	CONN FPC 61POS 0.30MM R/A	0
AYF332535A Panasonic	CONN FPC 25POS 0.30MM R/A	2167
AYF332135A Panasonic	CONN FPC 21POS 0.30MM R/A	450
AYF414035 Panasonic	Y4BH FPC .4MM 40 PIN CONN 100 OH	0
AYF530635 Panasonic	CONN FFC FPC 6POS 0.50MM R/A	138271
AYF530435A Panasonic	CONN FFC FPC 4POS 0.50MM R/A	548
AYF331735 Panasonic	CONN FPC 17POS 0.30MM R/A	0
AYF424035 Panasonic	Y4BH FPC .4MM 40 PIN CONN 85/90	0
AYF532835A Panasonic	CONN FFC/FPC 28POS 0.5MM SMD R/A	357
AYF330935A Panasonic	CONN FPC .30MM 9POS SMD R/A	280

FFC, FPC (Flat Flexible) Connectors

1. Overview

Flat Flexible Connectors (FFC/FPC) are compact, lightweight solutions for connecting electronic circuits. FFC (Flexible Flat Cable) refers to pre-formed ribbon cables with conductive traces, while FPC (Flexible Printed Circuit) are custom-designed circuits on flexible substrates. These connectors enable high-density interconnections in space-constrained applications, playing critical roles in modern electronics for their bendability, vibration resistance, and miniaturization capabilities.

2. Major Types & Function Classification

Type	Functional Features	Application Examples
ZIF (Zero Insertion Force)	Self-aligning contacts with minimal mating force	Smartphone displays, medical imaging devices
LIF (Low Insertion Force)	Economical solution with moderate insertion force	Consumer electronics, industrial sensors
Wrap-style FPC	360 bending capability with exposed contacts	Automotive infotainment systems
Stiffener-reinforced FFC	Localized rigidity for component mounting	Aerospace control panels

3. Structure & Composition

Typical construction includes:

Conductor Layer: Annealed copper (0.035-0.1mm thickness) with nickel/gold plating
Dielectric Layer: Polyimide film (0.05-0.25mm) or PVC insulation
Contact Interface: Phosphor bronze or beryllium copper terminals
Reinforcement: Steel/aluminum stiffeners in specific zones

Termination methods include press-fit, soldering, and anisotropic conductive film (ACF) bonding.

4. Key Technical Parameters

Parameter	Importance	Typical Range
Contact Resistance	Signal integrity maintenance	10-50m
Current Rating	Power transmission capability	0.5-3A per pin
Operating Temperature	Environmental reliability	-40 C to +105 C
Flex Life	Durability in dynamic applications	10,000-200,000 cycles
Pitch Size	Miniaturization factor	0.3mm-1.27mm

5. Application Fields

Consumer Electronics: Smartphones (camera modules), laptops (HDD connections)
Automotive: Dashboard clusters, ADAS sensors, infotainment systems
Medical: Portable monitors, imaging equipment (MRI connectors)
Industrial: Robotics (arm joint connections), measurement instruments

6. Leading Manufacturers

Manufacturer	Representative Products	Key Features
TE Connectivity	Micro Speed FFC	0.5mm pitch, 30G durability
Molex	PicoBlade FPC	Space-saving LIF design
JAE Electronics	DF12 Series	High-speed transmission up to 10Gbps
Hirose Electric	FH34 Series	Self-mating connector system

7. Selection Guidelines

Key considerations:

Circuit density requirements (pitch size vs. pin count)
Mechanical stress analysis (bend radius, flex cycles)
Thermal management needs (current load vs. conductor thickness)
Environmental sealing requirements (IP rating)
Cost vs. performance trade-offs (material choices)

Real-case Example: Smartphone camera module requires 0.3mm pitch FPC with 200 m bend radius and 100,000 flex life rating.

8. Industry Trends

Emerging developments include:

Sub-0.3mm pitch connectors for 5G mobile devices
Integrated EMI shielding in FPC structures
High-temperature resistant materials (up to 150 C)
3D-shaped FPCs for automotive LiDAR systems
Smart connectors with embedded sensing capabilities