Datasheet > TBU-CA065-300-WH_11

TBU-CA065-300-WH_11

更新时间： 2024-09-16 08:28:31

品牌	Logo	应用领域
伯恩斯 - BOURNS		/
页数	文件大小	规格书
2页	1299K
描述
RS-485 Port Protection

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TBU-CA065-300-WH_11 数据手册

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RS-485 Port Protection

Evaluation Board 2

Introduction

is evaluation board serves as an aid in

evaluating circuit protection on RS-485

serial device port solutions using Bourns®

TBU® High-Speed Protector (HSP), MOV

and TVS products to meet the required

industry standards on RS-485 port

Line A Unprotected

40 mils trace

Protected Load A

TBU® HSP 1

TVS1

TVS2

TVS3

TVS4

MOV1

GDT1

TISP1

TVS5

GDT3

^NUTISP2

MOV2

GDT2

interfaces. e recommended Bourns®

TBU® HSP solution oﬀers enhanced

performance features over competing

technologies, which can help the design

engineer to increase the surge & transient

protection level on RS-485 ports and place

the entire circuit protection solution into

a smaller PCB area. Bourns has developed

a RS-485 evaluation board (measuring 50

mm x 25 mm x 1.2 mm) manufactured

using FR4 PCB with nickel gold plating on

top and bottom sides.

TBU® HSP 2

Line B Unprotected

40 mils trace

Protected Load B

Figure 1

RS-485 Evaluation Board 2 Schematic

How to Connect the Evaluation

Board for Test Set-up

•ꢀ Connect J1 and J2 to the exposed lines.

•ꢀ Connect J3 and J4 to the RS-485

IC device.

Figure 2

RS-485 Evaluation Board 2 Top Side Layout*

RS-485 Evaluation Board 2 Bill of Materials

* In addition to the two TBU® HSPs, the default

conﬁguration of this board uses two MOVs (MOV1,

MOV2) and a single TVS diode array (TVS5). e board

allows diﬀerent conﬁgurations:

•ꢀ 2 MOVs (MOV1 and MOV2) may be replaced by

a) 2 single 2031 GDTs (GDT1 and GDT2)

or b) a dual 2030 GDT (GDT3, not yet released)

•ꢀ 1 TVS diode array (TVS3) may be replaced with

a) 2 SMB TVS diodes (TVS1, TVS2) or b) 2 SOT23

TVS diodes (TVS3, TVS4) or c) 2 SOT23-5 thyristor

devices (TISP1, TISP2)

Table 1

No.

Part Number Qty.

Description

Reference

TBU-CA065-300-WH

TBU® Single Bidirectional Line 650 V 300 mA TBU® HSP 1, TBU® HSP 2

MOV-10D201K

Single Line 10 mm MOV 200 V

Dual Bidirectional Line 7 V / 12 V

MOV1, MOV2

TVS5

CDSOT23-SM712

11/11 • FU1107

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