MP23ABS1 datasheet(10/15 Pages) STMICROELECTRONICS

10 / 15 page

Reliability tests

MP23ABS1

10/15

DocID031167 Rev 6

High Temperature Storage

(HTS)

To investigate the failure

mechanisms activated by high

temperature, the device is

stored in unbiased condition at

the maximum temperature

allowed by the package

materials

Ta = 125 °C, 1000 Hrs

Reference specification JESD22-A104

Temperature Cycling

(TC)

To investigate failure modes

related to thermo-mechanical

stress, the device is submitted to

cycled temperature excursions,

between a hot and a cold

chamber in air atmosphere

Low T = - 40 °C, High T = +125 °C, 1000 Cys

Preconditioning (PC) before

Reference specification JESD22-A105

Temperature Humidity

Storage (THS)

To investigate degradations

induced by wet conditions, the

device is stored at controlled

high temperature and relative

humidity

Ta = 85°C, R.H. = 85%, 1000Hrs

Preconditioning (PC) before

Reference specification JESD22-A102

Random Free-Fall on PCB

(TUMBLE)

To investigate durability to

mechanical repeated drops

without any preferential impact

direction simulating drop effect

on handheld devices

Microphone soldered on PCB which is mounted on

a specific jig

Random drop from 1 mt on steel base, 300 drops

Reference specification IEC 60068-2-32

Guided Free-Fall on PCB

(GFF)

To verify durability of the whole

device to mechanical shocks,

done by controlling height and

impact direction simulating drop

effect on handheld devices

Microphone soldered on PCB which is mounted on

a specific jig

Guided drop from 1.5 mt on marble base,

2 drops x 6 directions

Reference specification IEC 60068-2-32

Compressed Air Test

(CAT)

Test dedicated on the MEMS

Microphone to check

mechanical robustness of

sensor membrane alone

Microphone membrane is subjected to repeated air

pulses controlled on duration, rise and fall time and

amplitude.

Amplitude is varied with increasing steps.

ST internal specification

Mechanical Shock

(MS)

To verify mechanical robustness

of internal structural elements

(MEMS, package components)

to withstand severe shocks

produced by handling,

transportation or field operations

Five pulses of 10,000 g in each of six directions

with duration time 0.2 ms

Reference specification MIL 883, Method 2002.5

Variable Frequency

Vibration

(VB)

The vibration variable frequency

test is performed to determine

the effect of vibration, within a

specified frequency range, on

the internal structural elements

Peak acceleration of 20 g, from 20 Hz to 2000 Hz in

three perpendicular directions

Reference specification MIL 883, Method 2007.3-A

Table 7. Reliability specifications (continued)

Test name

Description

Conditions

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