Part No: CEP-2280

Description: piezo audio indicator

Phone: 800.275.4899

Fax: 503.612.2381

www.cui.com

20050 SW 112th Ave.

Tualatin, OR 97062

Date: 9/22/2006

Unit: mm

Page No: 3 of 4

Environment Test

Item

Test Condition

High temp. test

After being placed in a chamber at +70°C for

240 hours.

Low temp. test

After being placed in a chamber at -30°C for

240 hours.

Humidity test

After being placed in a chamber at +40°C and

90±5% relative humidity for 240 hours.

Temp. cycle test

The part shall be subjected to 5 cycles. One

cycle will consist of:

Evaluation Standard

The buzzer will be measured after

being placed at +25°C for 4

hours. The value of the

oscillation frequency/current

consumption should be within

±10% compared to the initial

measurements. The SPL should

be within ±10dB compared to the

initial measurements.

Reliability Test

Item

Test Condition

Operating (Life Test)

1. Continuous life test:

The part will be subjected to 48 hours of

continuous operation at +45°C with rated

voltage applied.

2. Intermittent life test:

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

minimum of 5,000 times at room temp

(+25±2°C) with rated voltage applied.

Evaluation Standard

The buzzer will be measured after

being placed at +25°C for 4

hours. The value of the

oscillation frequency/current

consumption should be ±10%

compared to the initial

measurements. The SPL should

be ±10dB compared to the initial

measurements.

Test Conditions

Standard Test Condition

a) Tempurature: +5 ~ +35°C

b) Humidity: 45 - 85%

c) Pressure: 860 - 1060 mbar

Judgement Test Condition

a) Tempurature: +25 ±2°C

b) Humidity: 60 - 70%

c) Pressure: 860 - 1060 mbar