In an era where compact, energy-efficient audible alerts are essential for consumer and industrial electronics, the PKM17EPPH4002-B0 from Murata Manufacturing stands out as a top-tier solution. This externally driven piezo transducer delivers 72dB sound output at just 1.5V, making it ideal for battery-powered devices. With increasing demand for low-power, high-reliability components in IoT and portable electronics, this 4kHz buzzer meets critical design requirements. Read on to discover its technical advantages, application scenarios, and how it compares to alternatives in the market.
Product Overview
The PKM17EPPH4002-B0 is a through-hole mounted piezoelectric buzzer with the following key specifications (per Murata datasheet):
| Parameter | Value |
|---|---|
| Technology | Piezo (Externally Driven) |
| Voltage Range | 1.5V (Max 25V) |
| Frequency | 4kHz ±500Hz |
| SPL | 72dB @ 10cm, 1.5V |
| Operating Temperature | -20°C to +70°C |
| Dimensions | 17mm diameter × 8.7mm height |
Selection Guide
When choosing the PKM17EPPH4002-B0, consider these factors:
Drive Circuit Compatibility: Requires external driver (2048Hz/4096Hz square wave typical)
Power Constraints: Ideal for 1.5V-3V battery systems
Mounting: Through-hole PC pins for secure PCB attachment
Environmental Conditions: Not suitable for >70°C environments
Figure 1: Typical drive circuit configuration (Source: Murata Application Notes)
Key Applications
Consumer Electronics: Microwave oven timers, smoke detectors
Industrial Equipment: Machinery status alerts, safety warnings
Medical Devices: Portable diagnostic equipment alarms
Case Study: A major thermostat manufacturer achieved 30% power reduction by switching to PKM17EPPH4002-B0 from electromagnetic buzzers.
Market Analysis
According to MarketsandMarkets 2023 report, the piezo buzzer market will grow at 5.7% CAGR through 2028, driven by:
Expansion of smart home devices
Automotive electronics requiring robust alerts
Demand for energy-efficient components
Comparison with Similar Models
| Model | PKM17EPPH4002-B0 | KSS-322A-TB | CMT-1603-42-SMT |
|---|---|---|---|
| Type | Piezo (External Drive) | Magnetic | Piezo (Self-Driven) |
| Voltage | 1.5V | 3V | 5V |
| SPL | 72dB | 85dB | 65dB |
| Advantage | Low power | Louder | Simpler circuit |
The PKM17EPPH4002-B0 is superior for low-voltage designs where power efficiency is critical.
Frequently Asked Questions
Q1: What drive frequency is optimal for this buzzer?
A: The resonant frequency is 4kHz, but it accepts 2-5kHz signals (Murata datasheet recommends 2048Hz or 4096Hz).
Q2: Can it operate continuously?
A: Yes, but with ≤50% duty cycle to prevent overheating.
Q3: Is this RoHS compliant?
A: Yes, all Murata PK series buzzers meet RoHS 3.0 standards.
Q4: What's the expected lifespan?
A: >100,000 cycles at rated conditions per IEC 60068-2 tests.
Q5: Why choose externally driven vs self-driven?
A: External drive allows precise frequency control and lower current draw (typically <1mA).
Future Trends
Emerging requirements will drive:
Thinner profiles for wearable devices
Higher SPL at lower voltages
Integrated smart drivers with IoT connectivity
Contact our component specialists: [email protected] for pricing, samples, or technical support on the PKM17EPPH4002-B0.
Conclusion
The Murata PKM17EPPH4002-B0 piezo buzzer delivers exceptional value for designers needing reliable, low-power audible alerts. With its 72dB output at 1.5V and robust through-hole construction, it solves critical challenges in consumer and industrial applications. As electronic devices continue prioritizing energy efficiency, this transducer's market relevance will only grow.
