Projects Unlimited, Inc.- 麦克风

Projects Unlimited, Inc. 成立于1951年，总部位于美国俄亥俄州代顿市，是一家领先的音频电子元器件制造商。公司专注于设计与生产蜂鸣器、换能器、扬声器、麦克风及相关声学器件。产品线涵盖机电蜂鸣器、压电蜂鸣器（如A-100系列）、磁性换能器（如T-200系列）、动圈扬声器和驻极体麦克风等。产品广泛应用于工业、医疗、军事、航空航天及消费电子等领域的音频信号指示。Projects Unlimited 以高品质、高可靠性著称，多款产品符合严格的军用和航空航天规范。公司提供定制设计服务，可根据客户需求调整声压级、频率范围和安装方式等参数。凭借超过70年的行业经验，Projects Unlimited 已成为全球电子元器件市场中值得信赖的音频器件供应商。客户群体涵盖主要原始设备制造商、国防承包商及医疗设备企业。尽管非半导体公司，Projects Unlimited 在音频指示器和换能器细分市场占据领先地位。公司持续创新，采用新材料和新设计以满足微型化和强固性等最新需求。

麦克风 - 型号列表

共 71 个型号

制造商零件编号	库存	价格	海关税号	重量	功能	外径	SVHC	供电电压	高度（最大）	深度	长度	阻抗	灵敏度	频率响应	额定电压	类型	其他规格	高度	自谐振频率	声压级 (SPL)	最大额定电流	控制器到传感器最大距离	层数	材料（通用）	外径（标称值）	平均正向功率	宽度	连接器颜色	工作温度	温升功耗	带宽	引脚间距	引脚长度（针脚）	引脚直径	漏电流（最大）
AI-1440-TWT-12V-R BUZZER,PIEZO,12VDC,14MM,PCB MNT PROJECTS UNLIMITED	10610	4: ¥22.9432	85311095	0.00091	:Piezo	:13.8mm	:No SVHC (20-Jun-2013)	:3VDC	-	:7.5mm	-	-	-	-	-	-	-	-	:4kHz	:80dBA	:7mA	-	:Continuous	-	:13.8mm	-	-	-	-	-	-	-	-	-	-
AI-2331-TWT-R AUDIBLE SIGNAL PROJECTS UNLIMITED	10	1: ¥35.9516	85318095	0	:Audio Indicator	:23.4mm	-	:3V	:9.7mm	-	-	-	-	-	-	-	-	-	:3.1kHz	:85dBA	-	-	:Continuous	-	-	-	-	-	-	-	:3100Hz	-	-	-	-
AI-3245-TF-LW95-R AUDIBLE SIGNAL PROJECTS UNLIMITED	52	5: ¥10.6216	84798997	0.12	:Sounder	:22mm	:No SVHC (20-Jun-2013)	:28V	-	:10.8mm	-	-	-	-	-	-	-	-	:4.5kHz	:90dB	:5mA	:10cm	:Continuous	-	:22mm	-	-	-	-	-	-	-	-	-	-
AI-4228-T-F-L-W140-4-R TRANSDUCER, PIEZO, 2.8KHZ, 95DBA, 28VDC PROJECTS UNLIMITED	10	1: ¥25.568	85318095	0.014	:Audio Indicator	-	-	:3V	:16mm	-	-	-	-	-	-	-	-	-	:2.8kHz	:95dBA	:7mA	-	:Continuous	-	-	-	-	-	-	-	-	-	-	-	-
ADS02008MR-R LOUDSPEAKER, MINI PROJECTS UNLIMITED	43	1: ¥27.18	85182995	0.003	:Micro Dynamic Speaker	:19.9mm	:No SVHC (20-Jun-2013)	-	:4mm	:4mm	:4mm	:8ohm	:86dB	:750Hz	-	-	-	-	:750Hz	:86dB	-	:10cm	-	-	-	:0.2W	:19.9mm	-	-	-	-	-	-	-	-
ADS02908MR-R LOUDSPEAKER, MINI PROJECTS UNLIMITED	92	46: ¥14.8376	85182995	:8g	:Micro Dynamic Speaker	:29mm	:No SVHC (20-Jun-2013)	-	:9.5mm	:9.5mm	:9.5mm	:8ohm	:88dB	:650Hz	-	-	-	-	:650Hz	:88dB	-	:10cm	-	-	-	:0.2W	:29mm	-	-	-	-	-	-	-	-
AI-4228-TWT-R BUZZER PROJECTS UNLIMITED	143	1: ¥36.24	85318095	:12g	:Buzzer	:42mm	:No SVHC (20-Jun-2013)	:3V	:14mm	:14mm	:14mm	-	-	-	-	-	-	-	:2.8kHz	:99dB	:10mA	:10cm	:Continuous	:ABS	-	-	-	-	-	-	-	:25.4mm	:6.5mm	:1mm	-
AI-4328-P-C28-2-R PIEZO BUZZER, CONT PROJECTS UNLIMITED	310	1: ¥99.66	85318095	:43g	:Buzzer	:43mm	:No SVHC (20-Jun-2013)	:4V	-	-	:33mm	-	-	-	-	-	-	-	:2.8kHz	:97dB	:8mA	:10cm	-	:ABS	-	-	-	:Black	:60°C	:8mA	-	-	-	-	-
AI-4329-P-FP28 PIEZO BUZZER, PULSE PROJECTS UNLIMITED	15	1: ¥76.00	85318095	:43g	:Buzzer	:43mm	:No SVHC (20-Jun-2013)	:6VDC	-	-	:33mm	-	-	-	-	-	-	-	:2.9kHz	:88dB	:6mA	:10cm	-	:ABS	-	-	-	:Black	:60°C	:6mA	-	-	-	-	-
AOM-4540L-R MICROPHONE, OMNI LEADS, 9.7MM PROJECTS UNLIMITED	35	1: ¥9.06	85182995	0.001	:Microphone	:9.7mm	:No SVHC (20-Jun-2013)	:1.5V	:4.5mm	:9.7mm	:4.5mm	:2.2kohm	:-40dB	:20Hz	:1.5V	:Microphone	:Omnidirectional	:4.5mm	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
AOM-4540P-R MICROPHONE, OMNI PCB, 9.7MM PROJECTS UNLIMITED	804	1: ¥9.06	85182995	0.067	:Microphone	:9.7mm	:No SVHC (20-Jun-2013)	:1.5V	:4.5mm	:9.7mm	:4.5mm	:2.2kohm	:-40dB	:20Hz	:1.5V	:Microphone	:Omnidirectional	:4.5mm	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
AOM-4544P-2-R MICROPHONE, OMNI PCB, 9.7MM PROJECTS UNLIMITED	11000	100: ¥7.4854	85182995	0.001	:Microphone	:9.7mm	:No SVHC (20-Jun-2013)	:1.5V	:4.5mm	-	-	:2.2kohm	:-44dB	:20Hz	:1.5V	:Microphone	:Omnidirectional	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	:500µA
AOM-4544P-NF-R MICROPHONE, OMNI PCB, 9.7MM PROJECTS UNLIMITED	10	1: ¥12.3964	85182995	0.001	:Microphone	:9.7mm	:No SVHC (20-Jun-2013)	:1.5V	:4.5mm	:9.7mm	:4.5mm	:2.2kohm	:-44dB	:20Hz	:1.5V	:Microphone	:Omnidirectional	:4.5mm	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
AOM-4546L-R MICROPHONE, OMNI LEADS, 9.7MM PROJECTS UNLIMITED	32	1: ¥9.06	85182995	0.001	:Microphone	:9.7mm	:No SVHC (20-Jun-2013)	:1.5V	:4.5mm	:9.7mm	:4.5mm	:2.2kohm	:-46dB	:20Hz	:1.5V	:Microphone	:Omnidirectional	:4.5mm	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
AOM-5244L-R MICROPHONE, OMNI LEADS, 9.7MM PROJECTS UNLIMITED	-		85182995	0.073	:Microphone	:9.7mm	:No SVHC (20-Jun-2013)	:4.5V	:5.2mm	:9.7mm	:5.2mm	:1kohm	:-44dB	:20Hz	:4.5V	:Microphone	:Omnidirectional	:5.2mm	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
AOM-6545L-R MICROPHONE, OMNI LEADS, 9.7MM PROJECTS UNLIMITED	1767	1: ¥9.06	85182995	0.001	:Microphone	:9.4mm	:No SVHC (20-Jun-2013)	:4.5V	:6.5mm	:9.4mm	:6.5mm	:1kohm	:-45dB	:20Hz	:4.5V	:Microphone	:Omnidirectional	:6.5mm	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
AOM-6545P-R MICROPHONE, OMNI PCB, 9.4MM PROJECTS UNLIMITED	81	1: ¥9.06	85182995	0.071	:Microphone	:9.4mm	:No SVHC (20-Jun-2013)	:4.5V	:6.5mm	:9.4mm	:6.5mm	:1kohm	:-45dB	:20Hz	:4.5V	:Microphone	:Omnidirectional	:6.5mm	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
AOM-6738L-R MICROPHONE, OMNI LEADS, 9.7MM PROJECTS UNLIMITED	200	10: ¥4.1351	85182995	0.001	:Microphone	:9.7mm	:No SVHC (20-Jun-2013)	:1.5V	:6.7mm	:9.7mm	:6.7mm	:2.2kohm	:-38dB	:20Hz	:1.5V	:Microphone	:Omnidirectional	:6.7mm	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
AOM-6738P-R MICROPHONE, OMNI PCB, 9.7MM PROJECTS UNLIMITED	1100	10: ¥4.1351	85182995	0.001	:Microphone	:9.7mm	:No SVHC (20-Jun-2013)	:1.5V	:6.7mm	:9.7mm	:6.7mm	:2.2kohm	:-38dB	:20Hz	:1.5V	:Microphone	:Omnidirectional	:6.7mm	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-
AOM-6742L-R MICROPHONE, OMNI LEADS, 9.7MM PROJECTS UNLIMITED	10	1: ¥12.5052	85182995	0.001	:Microphone	:9.7mm	:No SVHC (20-Jun-2013)	:1.5V	:6.7mm	:9.7mm	:6.7mm	:2.2kohm	:-42dB	:20Hz	:1.5V	:Microphone	:Omnidirectional	:6.7mm	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-	-