NOVEMBER 1997 - REVISED FEBRUARY 2005

Specifications are subject to change without notice.

Customers should verify actual device performance in their specific applications.

TISP4xxxF3LM Overvoltage Protector Series

TISP4072F3LM THRU TISP4082F3LM,

TISP4125F3LM THRU TISP4180F3LM,

TISP4240F3LM THRU TISP4380F3LM

BIDIRECTIONAL THYRISTOR OVERVOLTAGE PROTECTORS

T

R

SD4XAA

Terminals T and R correspond to the

alternative line designators of A and B

LMF Package (LM Package with Formed Leads) (Top View)

Device

V

V

‘4072

58

72

‘4082

66

82

‘4125

100

125

‘4150

120

150

‘4180

145

180

‘4240

180

240

‘4260

200

260

‘4290

220

290

‘4320

240

320

‘4380

270

380

How To Order

LM Package (Top View)

Ion-Implanted Breakdown Region

Precise and Stable Voltage

Low Voltage Overshoot under Surge

Rated for International Surge Wave Shapes

Device Symbol

These devices are designed to limit overvoltages on the telephone line. Overvoltages are normally caused by a.c. power system or lightning

flash disturbances which are induced or conducted on to the telephone line. A single device provides 2-point protection and is typically used

for the protection of 2-wire telecommunication equipment (e.g. between the Ring to Tip wires for telephones and modems). Combinations of

devices can be used for multi-point protection (e.g. 3-point protection between Ring, Tip and Ground).

The protector consists of a symmetrical voltage-triggered bidirectional thyristor. Overvoltages are initially clipped by breakdown clamping until

the voltage rises to the breakover level, which causes the device to crowbar into a low-voltage on state. This low-voltage on state causes the

current resulting from the overvoltage to be safely diverted through the device. The high crowbar holding current prevents d.c. latchup as the

diverted current subsides.

Description

.............................................. UL Recognized Component

NC - No internal connection on pin 2

NC

T(A)

R(B)

MD4XAT

1

2

3

NC - No internal connection on pin 2

NC

T(A)

R(B)

MD4XAKB

1

2

3

Device

Package

Carrier

TISP4xxxF3LM

Straight Lead DO-92 (LM)

Bulk Pack

TISP4xxxF3LM

Tape and Reeled

TISP4xxxF3LMR

Formed Lead DO-92 (LMF)

Tape and Reeled

TISP4xxxF3LMFR

TISP4xxxF3LM-S

TISP4xxxF3LMR-S

TISP4xxxF3LMFRS

Insert xxx value corresponding to protection voltages of 072, 082, 125 etc.

For Standard

Termination Finish

Order As

For Lead Free

Termination Finish

Order As

*RoHS Directive 2002/95/EC Jan 27 2003 including Annex

Waveshape

Standard

A

10/160 µs

FCC Part 68

60

0.5/700 µs

I3124

38

10/700 µs

ITU-T K.20/21

50

10/560 µs

FCC Part 68

45

10/1000 µs

REA PE-60

35