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POST · 012026-06-02

EDPcable Engineering Team

30-Pin or 40-Pin eDP? First, Realize It's Not Your Choice to Make

30-pin and 40-pin are the two most common pin counts for eDP cables, but which one you use isn't really up to procurement — it's fixed by the screen and the mainboard interface. This article lays out how the two differ: typical lane count, the resolution range each covers, backlight and power arrangement, and why the same pin count isn't always interchangeable. It gives a simple decision path to work back from the panel datasheet and connector model to the right one, instead of ordering on a "30 is cheaper, 40 is higher-end" impression. Whether it lands on 30 or 40, confirming the specific model and pinout is the step you can't skip.

POST · 022026-06-02

EDPcable Engineering Team

What ISO 13485 Means for Medical Cable Harnesses: A Compliance Primer Before You Source

ISO 13485 is the quality management system standard for medical devices. For someone sourcing medical cable harnesses, it isn't a certificate on a wall — it's about how traceability, lot records, change control, and process validation land on every cable. This primer clarifies a few things: how ISO 13485 differs from ISO 9001, what it specifically means for a medical harness, why device makers watch it when auditing suppliers, and a few commonly misunderstood points — for instance, holding a system certification doesn't mean the device is approved, nor that every single process is separately certified. It ends with a checklist you can ask a medical-harness supplier against.

POST · 032026-06-02

EDPcable Engineering Team

What Is an eDP Cable? Interface, Signals, and What to Sort Out Before Selection

eDP (Embedded DisplayPort) is an internal display interface defined by VESA. It carries the picture between the mainboard and the screen, and shows up in laptops, tablets, and all kinds of industrial and medical displays. Many people treat eDP as a type of cable, but it is first a signaling protocol; an "eDP cable" is the finished harness that packs the high-speed differential pairs, AUX, hot-plug detect, and backlight power into one bundle according to that protocol. This article explains what eDP really is as an interface, what signals run inside one cable, how version and connector affect selection, and what to prepare before an RFQ — so you can judge whether the project truly needs a custom eDP harness.

POST · 042026-06-02

EDPcable Engineering Team

What Is Laser Stripping? A Key Step in Fine Micro-Coax Harnesses

Laser stripping is a process that uses a laser to selectively vaporize a cable's jacket or dielectric and expose the conductor or shield precisely. In very fine micro-coax harnesses it is almost unavoidable: once the wire gauge gets to 40 AWG and finer and the pitch drops to 0.25mm, a traditional mechanical blade easily nicks the center conductor or shield. This article explains what laser stripping does in the micro-coax context, how it works and its key parameters, how it differs from mechanical stripping, and where it fits and where it doesn't. It's a process primer aimed at understanding; for actually building such harnesses, see the relevant capability page.

POST · 052026-06-02

EDPcable Engineering Team

What Is LVDS? From Signaling Basics to the Display Harness

LVDS (Low-Voltage Differential Signaling) is a way of moving data across a pair of wires using a small voltage difference between them — robust against noise, low-power, and low-EMI. In displays it usually appears as FPD-Link, packing the data pairs and clock a panel needs into one harness, and it is widely used in industrial monitors, medical patient monitors, and plenty of laptop screens. Many people treat LVDS as an interface or a cable, but it is first a signaling method. This article goes from the signaling principle to how a display harness is built, explains the old VESA-versus-JEIDA mapping trap, how to read connectors and pin count, and how to weigh it against eDP.

POST · 062026-06-01

EDPcable Engineering Team

FFC vs FPC: How to Choose the Right Flexible Interconnect

FFC and FPC are both used for flexible interconnects inside compact devices, but they solve different design problems. FFC is a better fit when the routing path is simple, the pitch and pin count are standardized, and repeatable batch assembly matters. FPC is better suited to custom circuit routing, stiffeners, shaped outlines, windows, pads, or local integration with the mechanical structure. Before moving to samples, it helps to decide whether the design is closer to a standard flexible flat cable, a custom FPC, or an FPC-to-wire hybrid, then prepare connector, length, stiffener, bend-path, and volume details.

POST · 072026-06-01

EDPcable Engineering Team

What Is an IDC Ribbon Cable? Basics of Flat Cable Termination and Selection

An IDC ribbon cable is a cable assembly made from a flat ribbon cable and an insulation displacement connector. It is commonly used in control boards, industrial equipment, communication modules, and board-to-board connections. Its main value is that multiple conductors can be terminated into a fixed-pitch connector without stripping and soldering each wire individually. Before sending an RFQ, it helps to confirm the basic structure, common pitch and pin counts, termination logic, where IDC ribbon cables fit well, where they do not, and what connector, pin mapping, length, and volume information is needed for quotation.

POST · 082026-06-01

EDPcable Engineering Team

What Is Impedance Control in High-Speed Cable Assemblies?

Impedance control in high-speed cable assemblies is a combination of structural design and test requirements used to reduce reflection, crosstalk, and signal-integrity risk. It is not just a "100 ohm" or "50 ohm" number on a drawing; it depends on cable geometry, dielectric materials, shielding, length, termination, connectors, and test conditions. For eDP, LVDS, micro-coax, and other high-speed display cable assemblies, the RFQ should clearly state target impedance, tolerance, single-ended or differential context, test method, connector, cable length, shielding structure, and report requirements.

POST · 092026-06-01

EDPcable Engineering Team

What Is a Micro-Coaxial Cable? Structure, Applications, and RFQ Basics

A micro-coaxial cable is a precision cable structure used for high-density, high-speed, or low-noise internal interconnects. It usually includes a center conductor, dielectric insulation, shielding, and an outer jacket. Compared with ordinary wires or flexible flat cables, micro-coax is better suited to fine-pitch connectors, strong shielding requirements, signal-integrity-sensitive paths, and space-constrained devices. Before sending an RFQ, it is useful to understand the basic structure, common AWG and pitch ranges, typical applications, the relationship with eDP / LVDS / FFC, and whether the design truly needs a micro-coaxial cable assembly.

POST · 102026-05-10

EDPcable Engineering Team

eDP vs LVDS: 5 Practical Differences When Selecting Display Cable Assemblies

eDP (Embedded DisplayPort) and LVDS (Low-Voltage Differential Signaling) are the two dominant interfaces for internal display interconnects in laptops, medical monitors, industrial panels, and embedded systems. LVDS dominated the 2000s and is still widely deployed, while eDP has become the default for new 4K and higher-resolution designs. Interface selection usually depends on five practical dimensions: bandwidth, cable construction, EMI handling, connector ecosystems, and power delivery. New designs also need to consider panel availability, board-side interface support, shielding margin, and whether the cable assembly must carry auxiliary control, backlight, or power lines in the same harness.