Jumper C-FLEX: compact, solder-ready flexible PCB jumpers
Replace bulky cable looms and connectors with thin, robust C-FLEX jumpers. Manufactured in our MMAB plant (Malmö, Sweden), C-FLEX offers Kapton® polyimide insulation, precision-reduced copper fingers and catalog options in 1.27 mm (CF1) and 2.54 mm (CF2) pitches — or fully customized layouts to fit your integration needs.
What is Jumper C-Flex?
The C-FLEX Jumper is a high-performance flexible interconnection system engineered to electrically link two or more printed circuit boards (PCBs) with minimal space, weight, and assembly complexity.
Unlike conventional wire harnesses or rigid connectors, the C-FLEX Jumper is a flat, laminated circuit composed of parallel copper conductors encapsulated between layers of Kapton® polyimide insulation, forming a thin, lightweight, and exceptionally durable flexible element.
Its low-mass architecture and controlled geometry provide outstanding reliability under vibration, thermal cycling, and mechanical stress, making it the preferred choice for aerospace, defense, transportation, and industrial electronics where stability, precision, and endurance are paramount.
Manufactured by ICAPE MMAB, the ICAPE Group’s European PCB facility in Malmö, Sweden, each C-FLEX Jumper is built with tight dimensional tolerances and traceable material control. The result is a product that combines mechanical flexibility, electrical integrity, and solder-ready precision.
Product overview
Operating temperature
−55 °C to +105 °C (continuous).
Typical thickness
0.25 mm. Bend radius ≥ 4 mm (non-termination).
Voltage rating up to 1500 V
combine PTC elements with fans to circulate warm air.
Material
Kapton® (polyimide) 25 μm + laminated copper (Cu-A1).
Applications of C-Flex Jumpers
C-FLEX Jumpers are ideal for:
- stacked PCB signal routing
- aerospace & MIL-spec electronics
- defense systems, rail & industrial automation
- weight-sensitive products
- any environment where vibration resistance and compact interconnects are critical.
Technical Specifications
- Pitch: 2.54 mm
- Total thickness: 0.25 mm ± 0.025 mm
- Voltage Rating: Up to 1500 V
- Current Rating: Up to 2.5 A per track (depends on width and copper thickness)
Conductors
- Material: Laminated copper (Cu-A1), half-hard
- Thickness Options: 250 µm (standard) → 100 µm in flex zone. Optional 150 µm or 70 µm for special designs
Insulator
- Material: Polyimide (Kapton®) 25 µm, hot-bonded with modified acrylic adhesive
- Dielectric Constant: 3.4 @ 1 kHz / 3.6 @ 1 MHz
- Dissipation Factor: 0.02 @ 1 MHz
- Dielectric Strength: Up to 5600 V @ 60 Hz
- Chemical Resistance: Excellent (except strong alkalines)
Physical & Climatic Stats
- Operating Temperature: −55 °C to +105 °C (continuous operation)
- Flex Part Thickness: 0.10 mm ± 0.025 mm (in the flexible area)
- Minimum Bend Radius: ≥ 4 mm (non-termination area)
- Thermal Cycling Resistance: Excellent, for dynamic or static use
- Humidity Resistance: High, suitable for industrial environments
Manufacturing & Logistics : European quality and responsiveness
The Jumper C-FLEX range is designed and produced by MMAB, ICAPE Group’s PCB manufacturing plant located in Malmö, Sweden.
This in-house European production ensures total control of every process stage, from raw-material sourcing to final inspection, guaranteeing consistent quality, electrical reliability, and short delivery times.
ICAPE MMAB, specializes in high-reliability printed circuit boards and flexible circuits for demanding markets such as industrial automation, aerospace, and defense.
Each jumper benefits from:
- In-process dimensional inspection (pitch accuracy, conductor spacing, and thickness tolerance within ±0.025 mm).
- Automated optical inspection (AOI) of conductor integrity and insulation alignment.
- 100 % electrical testing for continuity and isolation before shipment.
- Traceable batch coding for full process history, ensuring reliability in mission-critical applications.
The flexible structure (copper conductors laminated to 25 µm Kapton® with a modified acrylic adhesive) is heat-bonded and profiled by precision tooling, delivering a uniform, stable product that withstands vibration, thermal cycling, and humidity without delamination.
Process integration and customization
Because the entire production chain is internal to ICAPE MMAB, engineers can co-design the layout to meet exact mechanical constraints:
- Custom conductor width or thickness (70 µm – 250 µm).
- Shaped or bent termination fingers for automated soldering.
- Special pitches, folding geometries, or asymmetric lengths for compact PCB stacks.
- Tailored surface finishes (ENIG or Bright Tin) compatible with wave and hot-air soldering.
This flexibility allows designers to move directly from prototype to series production with no outsourcing delays or quality uncertainty.
Short lead times and reliable logistics
Manufacturing in Sweden brings European-level supply-chain responsiveness:
- Short lead times : catalogue items available from stock; custom jumpers produced within days.
- Fast delivery across Europe through ICAPE Group’s logistics network.
- Reduced carbon footprint thanks to localized manufacturing and minimized transport distances.
- Single-source responsibility : design, production, quality, and logistics handled by one group.
Every C-FLEX batch ships with a certificate of conformity and traceable production lot number, ensuring compliance with ICAPE Group’s quality management standards and the customer’s documentation requirements.
Backed by ICAPE Group’s global strength
As part of ICAPE Group, a global provider of PCBs and technical parts with over 25 years of experience, MMAB benefits from:
- A network of technical centers and logistics hubs worldwide.
- Centralized support for engineering, quotations, and after-sales service.
- ISO-certified quality systems aligned with ICAPE’s global standards.
- Sustainable manufacturing practices and continuous improvement programs.
This integration guarantees that Jumper C-FLEX combines the agility of European production with the reliability of a global industrial group.
Understanding the Part Number
Each C-FLEX jumper reference follows a simple format that defines the number of conductors, surface finish, length, and pitch.
Example from the brochure:
Example: 10EL15CF1
| Code Section | Meaning | Example Value | Description |
|---|---|---|---|
| 10 | Number of conductors | 10 | The jumper contains 10 parallel copper tracks. |
| E | Surface finish | E = ENIG | Electroless Nickel Immersion Gold plating on terminals. Ensures excellent solderability and corrosion resistance. |
| L15 | Length code | L15 = 38.1 mm (1.5") | Defines the total jumper length between terminals. Available in multiple standard sizes. |
| CF1 | Series code / pitch | CF1 = 1.27 mm | Defines the track spacing (pitch). CF1 = 1.27 mm; CF2 = 2.54 mm. |
Available options
| Parameter | Options / Values | Description |
|---|---|---|
| Pitch / Series Code | CF1 = 1.27 mm CF2 = 2.54 mm | Distance between conductors (center to center). |
| Number of Conductors | 2 to 60 | Standard range; other values on request. |
| Surface Finish (End Termination) | E = ENIG (Electroless Nickel Immersion Gold) T = Bright Tin | Determines solderability and corrosion resistance. |
| Standard Lengths (L-code) | L05 = 12.7 mm (0.5") L10 = 25.4 mm (1") L15 = 38.1 mm (1.5") L20 = 50.8 mm (2") L30 = 76.2 mm (3") L40 = 101.6 mm (4") | Length between terminals; custom lengths available on request. |
| Termination Shape | Straight fingers (standard) Custom bent or shaped ends (optional) | Designed for wave soldering or mechanical constraints. |
| Customization | Custom pitch, copper thickness, insulation type, or folded geometry | On-demand engineering through ICAPE MMAB (Malmö, Sweden). |
Want to read more?
Download our brochure and see if our C-Flex Jumper offer is right for you!
A C-FLEX Jumper is designed to connect two or more printed circuit boards (PCBs) using a thin, flexible laminated circuit. It replaces bulky cables or rigid connectors, saving space while maintaining high electrical and mechanical reliability.
It consists of parallel copper conductors laminated between Kapton® polyimide insulation layers, bonded with a modified acrylic adhesive. This structure ensures high flexibility, heat resistance, and long-term durability under vibration or thermal stress.
C-FLEX Jumpers are available in two standard pitches: 1.27 mm (CF1) and 2.54 mm (CF2), with 2 to 60 conductors and multiple standard lengths ranging from 12.7 mm to 101.6 mm. Custom dimensions and layouts are also available upon request.
Two high-quality finishes are offered: ENIG (Electroless Nickel Immersion Gold) for maximum corrosion resistance and solderability, and Bright Tin, an economical and effective alternative for standard applications.
Each conductor can carry up to 2.5 A, with a voltage rating of up to 1500 V. These values depend on conductor width, copper thickness, and ambient temperature conditions.
The jumper uses Cu-A1 copper for conductors and Kapton® polyimide film as insulation. This combination provides high electrical conductivity, flexibility, and resistance to chemicals and humidity.
C-FLEX Jumpers are ideal for aerospace, defense, railway, industrial automation, and embedded electronics applications where space savings, weight reduction, and reliability under stress are essential.
All C-FLEX Jumpers are produced in Malmö, Sweden, by MMAB, a manufacturing subsidiary of ICAPE Group. European production ensures full traceability, quality control, and short lead times for standard and custom designs.
Compared with conventional wiring, the C-FLEX Jumper offers a thinner profile, lighter weight, improved vibration resistance, and simplified assembly. It provides a solder-ready, fully traceable interconnect solution with higher reliability.
Yes. ICAPE MMAB can customize pitch, length, copper thickness, termination shapes, and folding geometry to meet the mechanical and electrical constraints of your project. Engineering teams assist with co-design and prototyping for seamless integration.
Do You Need C-Flex Jumpers?
Any questions?
There is an ICAPE Group team close to you and your business. All around the world, our business units are staffed with native experts available to answer all your questions. Contact us today!
