P6KE6.8 thru P6KE540A

Vishay General Semiconductor

www.vishay.com

For technical questions within your region, please contact one of the following:

PDD-Americas@vishay.com, PDD-Asia@vishay.com, PDD-Europe@vishay.com

Document Number: 88369

Revision: 22-Oct-08

6

PACKAGE OUTLINE DIMENSIONS in inches (millimeters)

APPLICATION NOTE

This P6KE TVS series is a low cost commercial

product for use in applications where large voltage

transients can permanently damage voltage-sensitive

components.

The P6KE series device types are designed in a small

package

size

where

power

and

space

is

a

consideration. They are characterized by their high

surge capability, extremely fast response time, and low

nature

of

transients,

and

the

variation

of

the

impedance

with

respect

to

these

transients,

impedance, per se, is not specified as a parametric

value. However, a minimum voltage at low current

at a maximum peak pulse current is specified.

Clamping Voltage) may be responsible for 50 % to

70 %. of the observed voltage differential when

subjected to high current pulses for several duty

cycles,

thus

making

a

maximum

impedance

specification insignificant.

In case of a severe current overload or abnormal

transient beyond the maximum ratings, the Transient

Voltage Suppressor will initially fail 'short' thus tripping

the system's circuit breaker or fuse while protecting the

entire circuit. Curves depicting clamping voltage vs.

various current pulses are available from the factory.

Extended power curves vs. pulse time are also

available.

Figure 7. Typical Transient Thermal Impedance

10

100

1

0.1

0.001

0.01

0.1

1

10

100

1000

DO-204AC (DO-15)

0.034 (0.86)

0.028 (0.71)

DIA.

0.140 (3.6)

0.104 (2.6)

DIA.

1.0 (25.4)

MIN.

0.300 (7.6)

0.230 (5.8)

1.0 (25.4)

MIN.