Switching Diode Array Steering Diode

TVS Array™

S C O T TS DALE DIVISION

MMAD1108 and MMAD1108e3

DESCRIPTION

APPEARANCE

These low capacitance diode arrays are multiple, discrete, isolated

junctions fabricated by a planar process and mounted in a 16-PIN package

for use as steering diodes protecting up to eight I/O ports from ESD, EFT,

or surge by directing them either to the positive side of the power supply

line or to ground (see figure 1). An external TVS diode may be added

between the positive supply line and ground to prevent overvoltage on the

supply rail. They may also be used in fast switching core-driver

applications. This includes computers and peripheral equipment such as

magnetic cores, thin-film memories, plated-wire memories, etc., as well as

decoding or encoding applications. These arrays offer many advantages of

integrated circuits such as high-density packaging and improved reliability.

This is a result of fewer pick and place operations, smaller footprint, smaller

weight, and elimination of various discrete packages that may not be as

user friendly in PC board mounting. They are available with either Tin-Lead

plating terminations or as RoHS Compliant with annealed matte-Tin finish

by adding an “e3” suffix to the part number.

Top Viewing Pin Layout

IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com

Microsemi

Scottsdale Division

Page 1

Copyright

© 2005

6-28-2005 REV L

FEATURES

APPLICATIONS / BENEFITS

•

8 Diode Array / protects 8 lines

• Low capacitance steering diode protection for high

frequency data lines

•

Molded 16-Pin Dual-In-Line Package

• RS-232 & RS-422 Interface Networks

•

UL 94V-0 Flammability Classification

• Ethernet: 10 Base T

•

Low Capacitance 1.5 pF per diode

• Computer I / O Ports

•

Switching speeds less than 5 ns

• LAN

•

RoHS Compliant devices available by adding “e3” suffix

• Switching Core Drivers

•

IEC 61000-4 compatible

61000-4-2 (ESD): Air 15kV, contact – 8 kV

61000-4-4 (EFT): 40A – 5/50 ns

61000-4-5 (surge): 12A, 8/20

µs

MAXIMUM RATINGS

MECHANICAL AND PACKAGING

• CASE: Void-free transfer molded thermosetting

epoxy body meeting UL94V-0 flammability

classification

• Operating Temperature: -55°C to +150°C

• Storage Temperature: -55°C to +150°C

• Forward Surge Current: 2 Amps (8.3 ms)

• TERMINALS: Tin-Lead or RoHS Compliant

annealed matte-Tin plating solderable per MIL-STD-

750 method 2026

12 Amps (8/20

• Continuous Forward Current: 400 mA (one diode)

•

• MARKING: MSC logo, MMAD1108 or

MMAD1108e3 and date code. Pin #1 is to the left of

the dot or indent on top of package

• Solder Temperature: 260°C for 10 s (maximum)

• WEIGHT: 0.127 grams (approximate)

• Tape & Reel packaging: 2500 pcs (STANDARD)

• Carrier tube packaging: 48 pcs

ELECTRICAL CHARACTERISTICS PER LINE @ 25°C Unless otherwise specified

REVERSE

RECOVERY

WORKING

LEAKAGE

CAPACITANCE

FORWARD

FORWARD

LEAKAGE

BREAKDOWN

PEAK

CURRENT

VOLTAGE

VOLTAGE

CURRENT

VOLTAGE

TIME

REVERSE

I

C

V

V

I

R

R

F

F

t

VOLTAGE

@ 0 V

T = 25°C

T = 150°C

I = 10 mA

I = 100 mA

V

V

A

µA

A

µA

pF

rr

ns

F

V

F

V

PART

NUMBER

MAX

@V

TYP

MAX

MAX

MAX

MIN

MAX

MAX

R

MMAD1108

90

75

0.200

20

300

20

1.5

5.0

1.00

1.20

MMAD1108e3

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