Dezember 22, 2025
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In today's fast-evolving industrial electronics market, reliable audio indicators like the MSR414NSR piezo buzzer from Mallory Sonalert Products Inc. are critical for system feedback and alarms. With an impressive 88dB sound pressure level (SPL) at 4V/30cm and a clear 3.5kHz frequency, this externally driven buzzer meets the growing demand for high-performance, washable components in harsh environments. Its wide voltage range (4-14V) and industrial temperature tolerance (-40°C to 65°C) make it ideal for automotive, appliances, and industrial controls. Read on to discover why the MSR414NSR stands out in electronic component selection for audible signaling solutions.
The MSR414NSR is an active piezo buzzer with internally driven circuitry, designed for through-hole mounting in space-constrained applications. Key features include:
Technology: Piezo electric (single tone operation)
Sound Output: 88dB @ 4V, measured at 30cm distance
Frequency: 3.5kHz ±500Hz (typical for attention-grabbing alerts)
Voltage Range: 4V to 14V DC with 3-12mA current draw
Robust Design: Washable rating and IP67 equivalent protection
| Parameter | Value |
|---|---|
| Mfr Part Number | MSR414NSR |
| Package | Bulk, Through Hole (23mm diameter) |
| Operating Temperature | -40°C to +65°C |
| SPL vs Voltage | 88dB @ 4V, increases linearly with voltage |
| Current Consumption | 3mA (min) to 12mA (max) |
| Lifespan | >50,000 hours @ rated voltage |
When choosing between buzzer types, consider these factors:
Drive Circuit: The MSR414NSR has built-in oscillation circuitry (self-driven), simplifying design vs. external-driver models.
Frequency Needs: 3.5kHz is optimal for human hearing sensitivity in noisy environments.
Environmental Factors: Washable rating suits medical/industrial cleaning cycles.
Power Constraints: Low current draw (3-12mA) benefits battery-powered devices.
| Model | SPL | Frequency | Voltage | Key Difference |
|---|---|---|---|---|
| MSR414NSR | 88dB | 3.5kHz | 4-14V | Washable, wide temp range |
| PKMCS0909E4000-R1 | 85dB | 4kHz | 3-20V | Higher voltage but lower SPL |
| ABI-054-RC | 95dB | 2.8kHz | 5-15V | Louder but consumes 15mA |
The MSR414NSR excels in:
Industrial Equipment: Machine status alerts in manufacturing plants (validated by IP67-like washability).
Automotive: Dashboard warnings (-40°C startup capability).
Medical Devices: Alarm systems where consistent tone is critical.
Consumer Appliances: Microwave timers, security panels.
According to Market Research Future (2023), the global piezo buzzer market will grow at 5.8% CAGR through 2030, driven by:
Increased automation requiring audible feedback
Demand for energy-efficient components (3mA min current)
Expansion of IoT devices needing reliable indicators
The MSR414NSR's discontinuation ("Not for New Designs") suggests migration to SMD alternatives, but remains popular for legacy repairs.
While through-hole buzzers like the MSR414NSR are being phased out, its technology influences next-gen solutions:
SMD versions with similar SPL (e.g., MST414NSR-SMD)
Multi-tone programmable variants
Lower-power designs (<1mA) for IoT
Yes, it performs optimally between 4-14V. At 5V, expect ~90dB SPL and 5mA current.
While not fully waterproof, its "washable" rating (per manufacturer) withstands splashes and cleaning cycles.
Mallory recommends the MST series for new designs, though MSR414NSR remains available for replacement stock.
Through-hole mounting (23mm PCB cutout) ensures vibration transfer for maximum SPL. Avoid dampening materials.
Yes, duty cycling is possible, but maintain ≥10ms pulses for consistent tone generation.
The MSR414NSR remains a robust choice for audible signaling despite its "Not for New Designs" status, offering unmatched reliability in harsh environments. Engineers valuing high SPL, wide voltage range, and washability continue to specify it for maintenance cycles. For new projects, consult sales@censtry.com for SMD alternatives with comparable performance.
