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TransFeed

AVX Multilayer Ceramic Transient Voltage Suppressors

TVS Protection and EMI Attenuation in a Single Chip

GENERAL DESCRIPTION

AVX has combined the best electrical characteristics of its

TransGuard Transient Voltage Suppressors (TVS) and its

Feedthru Capacitors into a single chip for state-of-the-art

overvoltage circuit protection and EMI reduction over a

broad range of frequencies. This unique combination of

multilayer ceramic construction in a feedthru configuration

gives the circuit designer a single 0805 chip that responds

to transient events faster than any TVS device on the mar-

ket today, and provides significant EMI attenuation when in

the off-state.

The reduction in parallel inductance, typical of the feedthru

chip construction when compared to the construction of

standard TVS or ceramic capacitor chips, gives the

TransFeed product two very important electrical advan-

tages: (1) faster “turn-on” time. Calculated response times

of <200 pSec are not unusual with this device, and mea-

sured response times range from 200 – 250 pSec. The

TransFeed “turn-on” characteristic is less than half that of

an equivalent TransGuard part — and TransGuards clamp

transient voltages faster than any other bipolar TVS solution

such as diodes; (2) the second electrical advantage of

lower parallel inductance, coupled with optimal series

inductance, is the enhanced attenuation characteristics of

the TransFeed product. Not only is there significantly

greater attenuation at a higher self-resonance frequency,

but the roll-off characteristic becomes much flatter, result-

ing in EMI filtering over a much broader frequency spec-

trum. Typical applications include filtering/protection on

Microcontroller I/O Lines, Interface I/O Lines, Power Line

Conditioning and Power Regulation.

TYPICAL APPLICATIONS

• Fingerprint ID Circuit

• Magnetic Field Circuit

• LCD Dashboard Driver

Where designers are concerned with both transient voltage

protection and EMI attenuation, either due to the electrical

performance of their circuits or due to required compliance

to specific EMC regulations, the TransFeed product is an

ideal choice.

Y

Capacitance

Tolerance

Y = +100/-50%

2

DC

Resistance

1 = 0.150 Ohms

2 = 0.200 Ohms

3 = 0.250 Ohms

E

Feedthru

Current

D = 500 mA

E = 750 mA

F = 1.0 Amp

D

Packaging

Code

Pcs./Reel

D = 1,000

R = 4,000

T = 10,000

V

Varistor

2

Chip Size

2 = 0805

3 = 0612

F

Feedthru

Capacitor

1

No. of

Elements

05

Voltage

05 = 5.6VDC

09 = 9.0VDC

14 = 14.0VDC

18 = 18.0VDC

A

Energy

Rating

X = 0.05J

A = 0.1J

C = 0.3J

150

Varistor

Clamping

Voltage

150 = 18V

200 = 22V

300 = 32V

400 = 42V

500 = 50V

P

Termination Finish

P = Ni/Sn Alloy (Plated)

M = Ni/Sn Pb (Plated)

HOW TO ORDER

Schematic Diagram

Electrical Model

IN

OUT

IN

C

OUT