Datasheet > R3612

R3612

更新时间： 2024-01-02 06:45:51

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描述
PROGRAMMABLE OVERVOLTAGE PROTECTOR FOR ERICSSON COMPONENTS 3357/3 DCLIC

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R3612 数据手册

R3612

PROGRAMMABLE OVERVOLTAGE PROTECTOR

FOR ERICSSON COMPONENTS 3357/3 DCLIC

DECEMBER 1995 - REVISED SEPTEMBER 1997

OVERVOLTAGE PROTECTION FOR ERICSSON COMPONENTS LINE INTERFACE CIRCUITS

●

PBA 3357/3 DCLIC Overvoltage Protector

P PACKAGE

(TOP VIEW)

●

Dual Voltage-Programmable Protector

- Wide 0 to -70 V Programming Range

- Low Voltage Overshoot Crowbar and Diode

- Low 5 mA max. Triggering Current

- Does not Charge Gate Supply

(Tip) K1

(Gate) G

K1 (Tip)

(Ground)

- Specified for 0°C to 70°C Operation

- Plastic Dual-in-line Package

K2 (Ring)

(Ring) K2

MD6XAV

NC - No internal connection

Terminal typical application names shown in

parenthesis

●

Rated for International Surge Wave Shapes

I_TSP

WAVE SHAPE

STANDARD

device symbol

2/10 µs

0.5/700 µs

10/700 µs

10/1000 µs

TR-NWT-001089

RLM88

K17, K20, K21

TR-NWT-001089

description

The R3612 is a dual forward-conducting buffered

p-gate over voltage protector in a plastic DIP

package. It is designed to protect the Ericsson

Components PBA 3357/3 DCLIC (Dual Channel

Complete Line Interface Circuit) against over

voltages on the telephone line caused by

lightning, a.c. power contact and induction. The

R3612 limits voltages that exceed the DCLIC

supply rail voltage.

SD6XAE

Terminals K1, K2 and A correspond to the alternative

line designators of T, R and G or A, B and C. The

negative protection voltage is controlled by the voltage,

V_GG,applied to the G terminal.

by power cross and induction. The gate

characteristic is designed to produce a net

current drain on the interface circuit voltage

supply during low level power cross or induction.

This removes the need for a separate clamping

diode across the voltage supply.

The DCLIC line driver section is powered from

0 V (ground) and a negative voltage in the region

of -44 V to -56 V. The protector gate is connected

to this negative supply. This references the

protection (clipping) voltage to the negative

supply voltage. As the protection voltage will

track the negative supply voltage the over

voltage stress on the DCLIC is minimised.

These monolithic protection devices are

fabricated in ion-implanted planar vertical power

structures for high reliability and in normal

system operation they are virtually transparent.

Positive over voltages are clipped to ground by a

low voltage overshoot diode. Negative over

voltages are initially clipped close to the DCLIC

negative supply rail value. If sufficient current is

available from the over voltage, then the

protector will crowbar into a low voltage on-state

condition. As the over voltage subsides the high

holding current of the crowbar prevents d.c.

latchup.

Characteristic values for the R3612 are

measured either at the extremes of the DCLIC

recommended operating voltage range (-44 V to

-56 V) or at the DCLIC maximum rated supply

voltage (-70 V).

The buffered gate design reduces the loading on

the DCLIC supply during over voltages caused

P R O D U C T

I N F O R M A T I O N

Information is current as of publication date. Products conform to specifications in accordance

with the terms of Power Innovations standard warranty. Production processing does not

necessarily include testing of all parameters.

12 3 4 5 6 7...16

中文翻译

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与R3612相关器件

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R36120	MICROSEMI	获取价格	Silicon Power Rectifier
R36120E3	MICROSEMI	获取价格	Rectifier Diode, 1 Phase, 1 Element, 70A, 1200V V(RRM), Silicon, DO-203AB, METAL, DO-5, 1
R36140	MICROSEMI	获取价格	Rectifier Diode, 1 Phase, 1 Element, 70A, 1400V V(RRM), Silicon, DO-203AB, METAL, DO-5, 1
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R-361D	OKAYA	获取价格	SURGE ABSORBER
R3620	MICROSEMI	获取价格	Silicon Power Rectifier
R3620E3	MICROSEMI	获取价格	Rectifier Diode, 1 Phase, 1 Element, 70A, 200V V(RRM), Silicon, DO-203AB, METAL, DO-5, 1 P
R36210000	ETC	获取价格	BUCHSE KLINKE PCB 3.5MM 2POL VERRIEGELB
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R-362BXZ	OKAYA	获取价格	SURGE PROTECTOR

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