Features

ESD Protection for 1 Line with Bi-directional

Provide ESD protection for each line to

IEC 61000-4-2 (ESD) ±30kV (air / contact)

IEC 61000-4-4 (EFT) 80A (5/50ns)

IEC 61000-4-5 (Lightning) 2.5A (8/20μs)

Suitable for, 21V and below, operating voltage

applications

0201 small CSP package saves board space

Protect one I/O line or one power line

Fast turn-on and low clamping voltage

Solid-state silicon-avalanche and active circuit

triggering technology

Green part

Applications

Mobile Phones

Hand Held Portable Applications

Computer Interfaces Protection

Microprocessors Protection

Serial and Parallel Port Protection

Control Signal Lines Protection

Power Lines on PCB Protection

Latchup Protection

Description

AZ4A21-01B is a design which includes a

bi-directional ESD rated clamping cell to protect

one power line, or one control line, or one low

speed data line in an electronic system. The

AZ4A21-01B has been specifically designed to

protect sensitive components which are

connected to power and control lines from

over-voltage damage and latch-up caused by

Electrostatic Discharging (ESD), Electrical Fast

Transients (EFT), and Cable Discharge Event

(CDE).

AZ4A21-01B is a unique design which

includes proprietary clamping cell in a single

package. During transient conditions, the

proprietary clamping cell prevents over-voltage

on the power line or control/data lines, protecting

any downstream components.

AZ4A21-01B is bi-directional and may be

used on lines where the signal swings above and

below ground.

AZ4A21-01B may be used to meet the ESD

immunity requirements of IEC 61000-4-2, Level 4

(±15kV air, ±8kV contact discharge).