rev.

page

date

DESCRIPTION: magnetic buzzer

A

3 of 5

01/07/2008

20050

phone

phone 503.612.2300 fax

fax 503.612.2383

PART NUMBER: CT-1205

ENVIRONMENT TEST

item

test condition

high temp. test

After being placed in a chamber at +85°C for

96 hours.

low temp. test

After being placed in a chamber at -40°C for

96 hours.

thermal shock

The part will be subjected to 10 cycles. One

cycle will consist of:

temp. cycle test

The part will be subjected to 10 cycles. One

cycle will consist of:

evaluation standard

After the test, the part will meet

specifications without any

damage to its appearance and

performance. After 4 hours at

25°C, the SPL should be within

±10dB compared with the initial

measurement.

RELIABILITY TEST

item

test condition

operating (life test)

1. Continuous life test:

The part will be subjected to 72 hours of

continuous operation at +70°C with 5 V,

2400 Hz applied.

2. Intermittent life test:

A duty cycle of 1 minute on, 1 minute off, a

minimum of 10,000 times at room temp

(+25 ±10°C) with 5 V, 2400 Hz applied.

evaluation standard

After the test, the part will meet

specifications without any

damage to its appearance and

performance. After 4 hours at

25°C, the SPL should be within

±10dB compared with the initial

measurement.

+85°C

a,b : 90~98%RH

c : 80~98%RH

a

b

+25°C

3hrs

12±0.5hrs

3hrs

c

24hours

+85°C

-40°C

30 min.

30 min.

60 min.

TEST CONDITIONS

standard test condition

a) temperature: +5 ~ +35°C

b) humidity: 45 - 85%

c) pressure: 860-1060 mbar

judgement test condition

a) temperature: +25 ±2°C

b) humidity: 60 - 70%

c) pressure: 860-1060 mbar