S2027

1. SCOPE

This specification is applied to the dynamic speaker for cellular handset。

2. GENERAL SPECIFICATIONS

2.1	Mechanical Drawing With Dimensions	20±0.2mm×27±0.2mm×5.5±0.3mm as shown Fig3
2.2	Weight	Approx 4.7g
2.3	Operating Temperature	-20℃～+70℃
2.4	Storage Temperature	-40℃～+80℃

3. SPEAKER MODE

3.1	Impedance	8Ω±15% at 2000Hz 1.0V
3.2	Rated Input Power	1.0W
3.3	Max Input Power	2.0W must be normal at a white noise for one minute
3.4	Sound Pressure Level	90±3dB/0.1W 0.1M at 1.0,1.2,1.5,2.0KHz Average
3.5	Resonance Frequency (f0)	700Hz±20% at 1.0V
3.6	Frequency Range	f0Hz～20KHz
3.7	Frequency Response Curve	Shown in Fig2
3.8	Buzzer & Rattles	Must be normal sine signal at 2.8V from f0Hz to 20KHz sweeping
3.9	Total Harmonic Distortion	Less than 10% at 1KHz (input 0.8W)
3.10	Polarity	When a positive D.C current is applied to terminal marked(+)diaphragm shall move forward

4. RELIABILITY TESTS

AFTER TEST

Sound pressure level of speaker difference shall be within ±3dB after test at 1.0,1.2,1.5,2.0KHz Average。

4.1	High Temperature Test	High Temperature: +55℃±3℃ Duration : 96 hours
4.2	Low Temperature Test	Low Temperature: -20℃±3℃ Duration : 96 hours
4.3	Humidity Test	Temperature: +40℃±2℃ Relative humidity: 90%～96% RH Duration : 96 hours
4.4	Vibration Test	Vibration: 10Hz～55Hz～10Hz Oct/min Amplitude: 1.5mm Duration : 2 hours in each of 3 axes
4.5	Temperature Cycle Test	Temperature: -20℃ +55℃ Duration : 2 hours 2 hours Cycle: 5 Cycle
4.6	Drop Test (under the unit)	Height: 1.5m Cycle: 12 Cycles
4.7	Load Test	Noise: White noise (EIA filter) Power: 1.0 W Duration: 96 hours

5. STANDARD TEST CONDITIONS：

Temperature: 17℃～25℃

Relative Humidity: 45%～85%(RH)

Air Pressure: 860hpa～1060hpa

6. JUDGEMENT TEST CONDITIONS：

Temperature: 20±2℃

Relative Humidity: 60%～70%(RH)

Air Pressure: 860hpa～1060hpa

7. SPEAKER MODE MEASURING CIRCUIT

1(12).png

(Fig 1)

8. SPEAKER MODE FREQUENCY RESPONSE CURVE

A: Frequency Resonance Mage dB re 20.00μPa

2(12).png

(Fig 2)

9. PRODUCT OUTSIDE VIEW

Unite: mm

Unless otherwise specified,

3(12).png

(Fig 3)

NO.	PART NAME	MATERIAL	QTY
1	Diaphragm	polyester	1
2	Magnet	Nd Fe B	1
3	Plate	SPCC	1
4	Voice Coil	POLYURETHANE ENAMELLED WIRE	1
5	Frame	PBT	1
6	PCB	FR-4	1
7	Silk Screen	Adhesive	1
8	Gasket	Adhesive	1
9	Wire	UL1571 AWG32	2