Bidirectional TVSarray ™

S C O T TS DALE DIVISION

USB50403C thru USB50424C, e3

SYMBOLS & DEFINITIONS

Microsemi

Scottsdale Division

Page 2

Copyright

© 2005

6-28-2005 REV K

Symbol

Definition

Stand Off Voltage: Maximum dc voltage that can be applied over the operating temperature range.

Vwm must be selected to be equal or be greater than the operating voltage of the line to be protected.

V

Minimum Breakdown Voltage: The minimum voltage the device will exhibit at a specified current

BR

Clamping Voltage: Maximum clamping voltage across the TVS device when subjected to a given current at a

pulse time of 20

µs.

I

Standby Current: Leakage current at V

D

WM.

C

Capacitance: Capacitance of the TVS as defined @ 0 volts at a frequency of 1 MHz and stated in picofarads.

GRAPHS

8/20µs 500W Pulse

Figure 1

Figure 2

Peak Pulse Power Vs Pulse Time t = µsec

Pulse Wave Form

OUTLINE AND SCHEMATIC

INCHES

MILLIMETERS

DIM

MIN

MAX

MIN

MAX

A

0.070

0.080

1.78

2.03

B

0.047

0.053

1.20

1.40

C

0.027

0.033

0.69

0.84

C1

0.012

0.018

0.30

0.46

D

0.107

0.113

2.72

2.87

E

0.042

0.045

1.07

1.14

PAD LAYOUT

SCHEMATIC

F

0.067

0.079

1.70

2.01

G

0.002

0.008

0.051

0.20

H

0.003

0.009

0.076

0.23

I

0.018

0.023

0.46

0.58

J

0.083

0.093

2.11

2.36

OUTLINE

8700 E. Thomas Rd. PO Box 1390, Scottsdale, AZ 85252 USA, (480) 941-6300, Fax: (480) 947-1503