FB120 [LITTELFUSE]

Silicon Avalanche Diodes - Axial Leaded Telecommunications Transient Voltage Suppressors; 硅雪崩二极管 - 轴向引线电信瞬态电压抑制器


型号：	FB120
厂家：	LITTELFUSE
描述：	Silicon Avalanche Diodes - Axial Leaded Telecommunications Transient Voltage Suppressors 硅雪崩二极管 - 轴向引线电信瞬态电压抑制器二极管电信
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Silicon Avalanche Diodes

Axial Leaded Telecommunications Transient Voltage Suppressors

FOLDBAK™ SERIES

Designed to protect sensitive telecommunications electronics from

transients which originate from induced lightning, power cross

and inductive load switching etc., especially where breakover

devices would cause nuisance latch-up.

Typical equipment would be: line cards, PABX, modems,

multiplexers and NTDs.

FEATURES

•

Foldback characteristics

2200 watts Peak Power rated with 10/1000µS pulse

30,000 watts Peak Pulse Power based on 8/20µS

UL 94V-0 flammability classification

DESCRIPTION

The foldback characteristic of this device eliminates the clamping

of the DC current, or the battery, used in telecom systems, so

latch-up is eliminated. Latch-up can occur with breakover devices

due to the conduction follow-on current supplied by the DC

system, after the device has responded to a transient.

0.966 - 1.066

With breakover devices, latch-up will happen more readily as the

ambient temperature rises because the holding current values will

fall with rising temperature.

The Foldbak eliminates this problem while still providing high

levels of protection.

Min 25.4

4.826

5.207

ABSOLUTE MAXIMUM RATINGS @25˚C

case temp (unless otherwise noted)

9.155

9.527

SYMBOL

PARAMETER

VALUE

Units

PPP

Peak Pulse Current

10x1000µsec

8-20µsec

2,200

20,000

Min 25.4

PM (AV) Steady state power dissipation,

5.0

lead length 9.5mm, TL - 85˚C (note 1)

Junction temperature

Storage temperature

-55 to 150

˚C

T stg

All dimensions in mm

Note 1. Mounted on copper pad area 40mm square

Vfb

Ipp

Characteristics @25˚C case temp (unless otherwise noted)

Maximum

breakover

Voltage

(Vbo)

DEVICE Working

TYPE voltage

(Vr)

Maximum Minimum

leakage foldback

current (Ir) voltage Vfb Current (lpp)

Maximum

Peak Pulse

Ibo

Irm

@ Vr

@ Vcl Note 2

volts

170

220

volts

µA

volts

amps

Vbo

FB120

FB160

120

160

1.0

170

Vrm

1.0

110

220

Note 2. Using 10/1000µS pulse

V-I Characteristic

304

www. littelfuse. com

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