Hon Hai Precision Industry Co., Ltd.

Shanghai Zhaoxin Semiconductor Co., Ltd.

Hong-fu Jin Precision Industry (shenzhen) Co., Ltd.

Hongfujin Precision Industry (wuhan) Co., Ltd.

Hsin-Kuan Wu

Tsai-Sheng Chen

Yun-Han Chen

Hou-Yuan Chou

Nai-Shung Chang

Chang-Li Tan

Hsiu-Wen Ho

Chun-Yen Kang

Ning Wu

Shun-Bo Bai

Yan-Mei Zhu

A contact arrangement, including multiple contacts, is provided. The contacts are staggered. Some of the contacts form at least one contact group. The at least one contact group includes a pair of first contacts and eight second contacts. The pair of first contacts is a pair of differential signal contacts. The second contacts are arranged around the pair of first contacts. Two of the second contacts are arranged along a straight line perpendicular to a connecting line of the pair of first contacts. The position distribution and electrical properties of the other six of the second contacts are symmetrical to each other relative to the straight line.

Contact arrangement, circuit board, and electronic assembly

A contact arrangement, including multiple contacts, is provided. The contacts are staggered. Some of the contacts form at least one contact group. The at least one contact group includes a first contact and six second contacts. The second contacts are arranged around the first contact. When the first contact is a power contact or a ground contact, the second contacts are signal contacts. When the first contact is a signal contact, three of the second contacts are power contacts or ground contacts and are not adjacent to each other.

A printed circuit board includes a motherboard and a daughterboard. The motherboard includes at least one first signal pad and defines at least one via under the at least one first signal pad. The daughterboard includes at least one second signal pad and defines at least one via under the at least one second signal pad. The at least one first signal pad and the at least one second signal pad are sucked into the respective vias on the motherboard and the daughterboard according to siphon principle to allow each of the first signal pads and the second signal pads to form uneven top surfaces, the uneven top surfaces of the at least one first signal pads and the at least one second signal pads are connected to each other for electronically connecting the daughterboard to the motherboard.

Printed circuit board with daughterboard

A PCB includes a number of insulation layers, a number of circuit layers, a signal-interfering component, and a signal-sensitive component. The circuit layers and the insulation layers are stacked alternately. The circuit layers include at least two first circuit layers, a second circuit layer, and a ground layer. The ground layer has a first side and a second side facing away the first side. The first circuit layers are positioned near the first side and include an outmost first circuit layer and at least one inner first circuit layer positioned between the outmost first circuit layer and the ground layer. The second circuit layer is positioned near the second side. The signal-interfering component is positioned on the outmost first circuit layer. The signal-sensitive component is positioned on the second circuit layer. Each inner first circuit layer defines a copper-remove area corresponding to an orthogonal projection of the signal-interfering component thereon.

Printed circuit board

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Taipei, Taiwan

Hsin-Kuan Wu