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TISP6NTP2A Programmable Protector
APPLICATIONS INFORMATION
Indoor POTS Lines to ITU-T Recommendation K.21. K.22 and IEC 61000-4-5: 1995
Internal POTS lines from WILL and ISDN-TA equipment are in a relatively unexposed environment. If these lines are galvanically isolated
(floating), the return path for any induced surges can only be through equipment capacitance or insulation breakdown.
The most stressful condition would be when the POTS lines are not galvanically isolated. Such a case is when an ISDN-TA has a common
connection between the incoming ISDN line and the internal POTS lines. The ISDN line is likely to be ground referenced and may have primary
protection at the subscriber connection. If the primary protection operates, it provides a direct return to ground.
ITU-T recommendation K.22 for a floating 4-conductor T/S bus uses a 1 kV 1.2/50 or 2/10 impulse, capacitively coupled via 8 nF to the bus
conductors. Very little circulating current is likely to flow during K.22 testing. If the T/S bus has a ground return, then the testing changes to
ITU-T recommendation K.21. The required series resistor values for K.21 and the TISP6NTP2A have been calculated earlier.
In IEC 61000-4-5: 1995 the highest specified test level is class 5. For unshielded symmetrically operated lines, class 5 testing uses a 4000 V
combination wave (1.2/50, 8/20) generator to apply a simultaneous impulse to all conductors. For the four conductors of the two POTS lines,
the currents are equalized by the use of specified 160 ? feed resistors. As the generator fictive source impedance is 2 ? , the peak current in
each conductor is 4000/(2x4 + 160) = 24 A. This is less than the 60 A TISP6NTP2A rating.
If the lines are long and exit the building, testing is done with a 10/700 generator. In this case the feed resistors are 100 ? and the fictive
impedance is 15 ? . The peak current in each conductor will be 4000/(15x4 + 100) = 25 A. This value is the same as the TISP6NTP2A rating.
As the equipment connected to the POTS line may have uncoordinated protection, it is desirable to provided the ring-tip pair current sharing to
the TISP6NTP2A by series resistors (R1A, R1B, R2A and R2B). A value of 4 ? should be sufficient to ensure sharing.
“TISP” is a trademark of Bourns, Ltd., a Bourns Company, and is Registered in U.S. Patent and Trademark Office.
“Bourns” is a registered trademark of Bourns, Inc. in the U.S. and other countries.
JUNE 1998 - REVISED JULY 2008
Specifications are subject to change without notice.
Customers should verify actual device performance in their specific applications.
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相关代理商/技术参数
TISP6NTP2ADR-S 功能描述:SCR Quad Buffered PGate Forward Conducting RoHS:否 制造商:STMicroelectronics 最大转折电流 IBO:480 A 额定重复关闭状态电压 VDRM:600 V 关闭状态漏泄电流（在 VDRM IDRM 下）:5 uA 开启状态 RMS 电流 (It RMS): 正向电压下降:1.6 V 栅触发电压 (Vgt):1.3 V 最大栅极峰值反向电压:5 V 栅触发电流 (Igt):35 mA 保持电流（Ih 最大值）:75 mA 安装风格:Through Hole 封装 / 箱体:TO-220 封装:Tube
TISP6NTP2AD-S 功能描述:SCR Quad Buffered PGate Forward Conducting RoHS:否 制造商:STMicroelectronics 最大转折电流 IBO:480 A 额定重复关闭状态电压 VDRM:600 V 关闭状态漏泄电流（在 VDRM IDRM 下）:5 uA 开启状态 RMS 电流 (It RMS): 正向电压下降:1.6 V 栅触发电压 (Vgt):1.3 V 最大栅极峰值反向电压:5 V 栅触发电流 (Igt):35 mA 保持电流（Ih 最大值）:75 mA 安装风格:Through Hole 封装 / 箱体:TO-220 封装:Tube
TISP6NTP2B 制造商: 功能描述: 制造商:undefined 功能描述:
TISP6NTP2BD 功能描述:SCR SURGE SUP 8-SOP RoHS:否 制造商:STMicroelectronics 最大转折电流 IBO:480 A 额定重复关闭状态电压 VDRM:600 V 关闭状态漏泄电流（在 VDRM IDRM 下）:5 uA 开启状态 RMS 电流 (It RMS): 正向电压下降:1.6 V 栅触发电压 (Vgt):1.3 V 最大栅极峰值反向电压:5 V 栅触发电流 (Igt):35 mA 保持电流（Ih 最大值）:75 mA 安装风格:Through Hole 封装 / 箱体:TO-220 封装:Tube
TISP6NTP2BDR 功能描述:SCR SURGE SUP 8-SOP RoHS:否 制造商:STMicroelectronics 最大转折电流 IBO:480 A 额定重复关闭状态电压 VDRM:600 V 关闭状态漏泄电流（在 VDRM IDRM 下）:5 uA 开启状态 RMS 电流 (It RMS): 正向电压下降:1.6 V 栅触发电压 (Vgt):1.3 V 最大栅极峰值反向电压:5 V 栅触发电流 (Igt):35 mA 保持电流（Ih 最大值）:75 mA 安装风格:Through Hole 封装 / 箱体:TO-220 封装:Tube
TISP6NTP2BDR-S 功能描述:SCR SURGE SUP 8-SOP RoHS:否 制造商:STMicroelectronics 最大转折电流 IBO:480 A 额定重复关闭状态电压 VDRM:600 V 关闭状态漏泄电流（在 VDRM IDRM 下）:5 uA 开启状态 RMS 电流 (It RMS): 正向电压下降:1.6 V 栅触发电压 (Vgt):1.3 V 最大栅极峰值反向电压:5 V 栅触发电流 (Igt):35 mA 保持电流（Ih 最大值）:75 mA 安装风格:Through Hole 封装 / 箱体:TO-220 封装:Tube
TISP6NTP2BD-S 功能描述:SCR SURGE SUP 8-SOP RoHS:否 制造商:STMicroelectronics 最大转折电流 IBO:480 A 额定重复关闭状态电压 VDRM:600 V 关闭状态漏泄电流（在 VDRM IDRM 下）:5 uA 开启状态 RMS 电流 (It RMS): 正向电压下降:1.6 V 栅触发电压 (Vgt):1.3 V 最大栅极峰值反向电压:5 V 栅触发电流 (Igt):35 mA 保持电流（Ih 最大值）:75 mA 安装风格:Through Hole 封装 / 箱体:TO-220 封装:Tube
TISP6NTP2C 制造商:BOURNS 制造商全称:Bourns Electronic Solutions 功能描述:TISP6NTP2C High Voltage Ringing SLIC Protector