I-PEX 83043-100B-01-D CABLINE®-UM 40AWG/50Ω series ultra-thin coaxial cable replacement

I-PEX 83043-100B-01-D: ultra-fine coaxial cable harness solution for high-density, high-speed devices

In the context of the continuous development of laptops, high-performance display devices, industrial vision, AI terminals, and high-speed computing equipment towards thinness and speed, the internal connections of devices not only need to meet the transmission requirements of more signal channels but also need to take into account the limited space, signal integrity, and EMI electromagnetic compatibility performance. The I-PEX 83043-100B-01-D introduced this time is a 60Pin ultra-thin coaxial cable of the CABLINE®-UM series, using 60 AWG#40 50Ω Micro-Coaxial Cable (ultra-thin coaxial cable), with a cable length of 100mm, and adopting a 1-1 straight-through Pin Assignment structure. The connector at the cable end uses I-PEX 20878-060T-01, and when paired with the CABLINE®-UM 60Pin connector module, it realizes high-density, high-speed internal interconnection of devices. According to relevant product information, CABLINE®-UM uses a 0.4mm contact spacing, Vertical Right Angle vertical right-angle structure, with a height of about 2.2±0.15mm, and is equipped with ZenShield® full EMI shielding and Mechanical Lock mechanical lock design. The product platform supports the highest 40Gbps/lane PAM3 high-speed transmission and can be applied to high-speed interfaces such as USB4, Thunderbolt 5, DisplayPort, eDP, HDMI, MIPI, etc.

---

How do the AWG#40 ultra-fine coaxial cable and CABLINE®-UM connector together determine the harness performance?

For engineers, the selection or development of extremely fine coaxial cable assemblies cannot be solely based on "how many pins" and "how long." The cable specification and connector specification are also important factors in determining whether the solution can be implemented. The core cable specification used in I-PEX 83043-100B-01-D is AWG#40, which belongs to a very fine Micro-Coaxial Cable specification. At the same time, the series of connectors supports AWG36, AWG38, AWG40, AWG42, AWG44 and various extremely fine coaxial specifications. However, there are differences in impedance matching and current carrying capacity among different wire diameters. Therefore, when making an actual selection, it is necessary to make a comprehensive judgment based on transmission speed, signal type, channel number, and structural space. For this 60Pin product, AWG#40 and the high-density CABLINE®-UM connector form a good miniaturized combination; on the connector end, 20878-060T-01 is the important配套 model used for this 60Pin cable assembly. When engineers are matching connectors, replacing cable assemblies, or checking BOM, they should focus on confirming whether the pin count, connector series, cable AWG, wire sequence, and end structure are consistent. Relevant information shows that CABLINE®-UM can provide specifications such as 30/40/50/60Pin, and the width of the 60Pin connector is calculated to be about 29mm according to "5.0+0.4×Pin number," which can achieve high-density signal connections in a smaller space.

---

I-PEX connector selection method for ultra-fine coaxial cable bundles: what should engineers and purchasing personnel pay special attention to?

In actual projects, it is recommended to confirm the selection of "I-PEX connector for ultra-fine coaxial cable assembly" from several dimensions such as connector model, Pin count, cable specification, length, Pin assignment, and application rate. Firstly, confirm which I-PEX connector series is used on the device end, for example, this scheme belongs to the CABLINE®-UM series and corresponds to a 60Pin structure; secondly, confirm the cable AWG specification, this product is AWG#40, and it cannot be simply replaced with other AWG cables, as the change in wire diameter may further affect impedance, attenuation, crosstalk, mechanical dimensions, and connector compatibility; further, confirm the cable length, 83043-100B-01-D is 100mm, and its Pin assignment is 1-1. If the device requires a different cable sequence or length, it is necessary to reconfirm the corresponding cable model. The CABLINE-UM evaluation samples in the I-PEX materials also cover different combinations such as 30Pin, 40Pin, 50Pin, 60Pin, and 100mm, 200mm, 300mm, etc. Therefore, engineers should first determine "connector Pin count + cable AWG + length + cable sequence" when selecting, and purchasing personnel should check these parameters against supplier drawings, samples, and BOM one by one, rather than making vague purchases based on a single I-PEX part number. For high-speed applications, it is also necessary to further pay attention to the impedance control, signal integrity, and shielding performance of ultra-fine coaxial cables; CABLINE®-UM itself adopts ZenShield® full EMI shielding and multi-point grounding design, and has mechanical latches, which help meet the requirements of high-speed equipment for EMC and connection reliability.

---

Selection and compatibility with alternative solutions reference and suggestions: How to choose the appropriate domestic compatible alternative ultra-fine coaxial cable assembly?

For projects that require localization, supply chain optimization, second supplier introduction, or original factory harness replacement, it is recommended to use the complete specifications of the original I-PEX line harness as a benchmark, rather than just looking for "similar-looking" products based on the connector shape. Taking I-PEX 83043-100B-01-D as an example, the compatibility and replacement assessment should at least be around the CABLINE®-UM 60Pin interface, the wire end connector I-PEX 20878-060T-01, AWG#40 ultra-thin coaxial cable, 50Ω characteristic impedance, 100mm length, 1-1 wire sequence, and the mechanical dimensions and wiring structure of both connectors. On this basis, it should also verify items such as conductivity, insulation, voltage resistance, impedance, insertion loss, return loss, crosstalk, and shielding effect according to the actual high-speed signal requirements of the equipment. For procurement personnel, if there are issues with lead time, price, or supply stability with the original factory part number, it is recommended to prioritize requiring suppliers to provide "samples of the same specification + engineering drawings + wire specifications + connector model + test data" for comparison before proceeding with small batch verification and mass production introduction. Our company can provide: I-PEX 83043-100B-01-D compatible replacement harness solutions, which can be developed for compatibility and replacement around the original product's 60Pin, AWG#40 ultra-thin coaxial cable, and corresponding connector structure, and can match ultra-thin coaxial cable harness solutions according to the actual length, wire sequence, wiring direction, and application requirements of the customer's equipment, providing engineers with harness manufacturing support from sample verification to mass production.

---

From engineering selection to bulk procurement: truly enabling the stable replacement of ultra-fine coaxial cable束
For high-speed, miniaturized electronic devices, ultra-fine coaxial cables have become more than just simple "connection lines," but are crucial components affecting high-speed signal transmission, spatial layout, EMI control, and overall reliability. The I-PEX 83043-100B-01-D features a core specification of 60Pin, AWG#40 ultra-fine coaxial cable, 100mm in length, and a 1-1 straight-through structure, combined with the CABLINE®-UM series connectors' small spacing, high-speed transmission, full shielding, and mechanical locking features, providing a mature product reference for high-density internal high-speed interconnection. For engineers, it is important to focus on confirming the connector, pin count, AWG, impedance, length, and wire sequence when selecting; for purchasers, further attention should be paid to supply stability, compatibility verification, sample consistency, and mass production capability. I am【3W Electronic Components Network】If you need to select ultra-fine coaxial cable束，purchase products，carry out research and development，or seek alternative solutions，welcome to contact us at any timeManager Zhang: 18913228573 (WeChat same number)Our company focuses on the production and manufacturing of extremely thin coaxial cable assemblies and compatible alternative solutions. We can conduct specifications analysis, sample development, and mass production for extremely thin coaxial cable assemblies corresponding to brands such as I-PEX connectors. We help customers find more flexible cable assembly supply solutions while meeting actual assembly and high-speed signal requirements.