| 品牌 | LIANHUA |
|---|---|
| 型号 | LET9040A |
DATE | 17-01-13 | SPECIFICATION | Changzhou Cre-sound Electronics Co., Ltd | |
PAGE | 1/6 | www.wj-Lianhua.com | ||
| MODEL NAME:LET9040A-05O-2.73-40-4.0-R | ||||
SPECIFICATION FOR APPROVAL
ELECTRO-MAGNETIC TRANSDUCER
Model Name | LET9040A-05O-2.73-40-4.0-R |
Note |
CUSTOMER | Cre-sound |
Customer name / Stamp / Sign / Date | DRAWN：许海 |
CHECKED：李小芬 | |
APPROVED：宋雪琪 |
DATE | 17-01-13 | SPECIFICATION | Changzhou Cre-sound Electronics Co., Ltd | |
PAGE | 2/6 | www.wj-Lianhua.com | ||
| MODEL NAME:LET9040A-05O-2.73-40-4.0-R | ||||
DATE | 17-01-13 | SPECIFICATION | Changzhou Cre-sound Electronics Co., Ltd | |
PAGE | 3/6 | www.wj-Lianhua.com | ||
| MODEL NAME:LET9040A-05O-2.73-40-4.0-R | ||||
ELECTRO-MAGNETIC TRANSDUCER
1 | Rated Voltage (V) | 5.0 |
2 | Operating Voltage (V) | 3～7 |
3 | Coil Resistance (Ω) | 40±6 |
4 | Resonant Frequency (Hz) | 2730 |
5 | *Sound Output at 10cm(dB) | ≥85 |
6 | *Current Consumption (mA) | ≤60 |
7 | Operating Temperature (℃) | -25～+70 |
8 | Storage Temperature (℃) | -30～+80 |
9 | Weight (g) | 0.7 |
10 | Housing Material | PPO |
11 | ROHS | Yes |
*Applying rated voltage (Resonant frequency, 1/2 duty, Square wave)
DIMENSIONS (UNIT: mm)
Tolerance: ±0.5mm Except Specified
DATE | 17-01-13 | SPECIFICATION | Changzhou Cre-sound Electronics Co., Ltd | |
PAGE | 4/6 | www.wj-Lianhua.com | ||
| MODEL NAME:LET9040A-05O-2.73-40-4.0-R | ||||
TEST METHOD:
FREQUENCY RESPONSE:
DATE | 17-01-13 | SPECIFICATION | Changzhou Cre-sound Electronics Co., Ltd | |
PAGE | 5/6 | www.wj-Lianhua.com | ||
| MODEL NAME:LET9040A-05O-2.73-40-4.0-R | ||||
RELIABLY TEST:
NO. | ITEM | TESTING CONDITION | VARIANCE AFTER TEST |
1 | Humidity | 40±5℃, 93(+2/-3)%RH, 96HRS | All specifications must be satisfied after the test. |
2 | High temp. | +80±2℃, 96HRS | |
3 | Low temp. | -30±2℃, 96HRS | |
4 | Temperature cycling | -30±2℃, 30minutes room temp. 15 minutes +80±2℃, 30 minutes room temp. 15 minutes 5 cycles | |
5 | Drop test | 3 times from height of70cmonto the surface of10mmthick wooden board. | |
6 | Vibration test | Make the test for the directions of X Y and Z (total 0.5 hours). To-and-fro. sweep time (from 10 to 55 Hz and then 55 to 10 ) under single amplitude of1.0mmis 1 minute. | |
7 | Solder heat resistance | The part leads (pins) shall be immersed in molten solder maintained at 250±10℃ for a period of 30 seconds. | After the test part shall meet specifications without any degradation in appearance and performance. |
DATE | 17-01-13 | SPECIFICATION | Changzhou Cre-sound Electronics Co., Ltd | |
PAGE | 6/6 | www.wj-Lianhua.com | ||
| MODEL NAME:LET9040A-05O-2.73-40-4.0-R | ||||
PACKING:
NOTES:
1.100 PCS per box
2.Total 50 boxes per carton
3.Total 5000 PCS carton