The general USB protection device package can not meet the requirements, and only protect two IO and Vbus, TPD4S012DRYR is a special for USB OTG needs a small size protection device, can protect 3 high-speed IO and Vbus at the same time, currently very out of stock.

Parameter introduction

     Now Leiditech has launched ULC051510TP6 fully pin 2 pin compatible volume and traces, which meets the customer's production needs.

The following is an introduction to the parameters of the product.

It can meet the low capacitance requirements of IO signals and pass the eye diagram test. Special attention should be paid to the LAY OUT trace design when designing the PCB. 

PCB design essentials

Measures must be taken to properly place ESD protection devices and trace signal to ensure maximum ESD survivability and signal integrity for the application. These steps are listed below. 

1. Put the ESD protection device as close as possible to the I/O connector to reduce the ESD path to the ground and improve the protection performance.

1.1. In USB 2.0 applications, the ESD protection device should be placed between the AC coupling capacitors and the I/O connector on the TX differential channel, as shown in the figure below, in this configuration, no DC current can be used through the ESD protection device to prevent any potential latching conditions. For more information on latching considerations, see the illustration in the figure below.

2. Ensure that differential design methods are used and impedance matching of all high-speed signal recording channels.

2.1. Use curved trajectories whenever possible to avoid unwanted reflections.

2.2. Keep the length of the record path between the positive and negative lines of the differential data channel equal to avoid common-mode noise generation and impedance mismatch.

2.3. Place ground between high-speed pairs and keep the distance between pairs as much as possible to reduce crosstalk.

Summary

Leiditech Electronics is committed to localization, providing foreign brands of discrete devices, protection device replacement, help enterprises production and design, alternative brands are as follows, vishay onsemi littlefuse nxp semtech murata Toshiba rohm ti and so on.