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Piezoelectric Passive Buzzer | Buzzer Solutions by Jiangsu Huaneng Electronics
Visit: www.hnbuzzer.com | Brand: HNDZ | Made in China
The HNR-1407 PA7.5 is a high-performance piezoelectric passive buzzer (also referred to as a passive piezoelectric buzzer) developed by Jiangsu Huaneng Electronics — a leading Buzzer and acoustic component manufacturer since 2013. With its compact Φ14 mm through-hole profile and ultra-low current draw, this model is widely adopted as a reliable alternative to the Murata Buzzer (Murata PKM-series piezoelectric sounders), delivering comparable PCB footprint with enhanced supply stability and factory-direct pricing.
As part of our comprehensive Buzzer Solutions, the HNR-1407 PA7.5 achieves ≥85 dB sound output at just ≤10 mA. Beyond this through-hole type, Huaneng also offers a full range of SMD Buzzer options for automated SMT assembly — explore our complete catalog at hnbuzzer.com.
Murata has announced the discontinuation of numerous piezoelectric sounder and buzzer models (including the PKM17EPP, PKM22EPPH, PKM13EPYH, and PKB24SPCH series) with "Not applicable" replacement recommendations. Engineers facing this supply gap need a dependable substitute. Our HNR-1407 PA7.5 is engineered to match the critical dimensions and electrical characteristics of typical Murata through-hole passive piezoelectric buzzer units:
| Parameter | Murata Buzzer (Typical PKM Series) | HNR-1407 PA7.5 |
|---|---|---|
| Type | Passive piezoelectric sounder | Passive piezoelectric buzzer |
| Diameter | ≈ 12 – 17 mm | Φ14 ± 0.3 mm |
| Height | ≈ 6 – 8 mm | 6.7 ± 0.5 mm |
| Sound Pressure | 78 – 92 dB typ. @ 10 cm | ≥ 85 dB @ 10 cm |
| Resonant Frequency | 2.0 kHz / 4.0 kHz | 4000 ± 500 Hz |
| Operating Voltage | 3 – 30 Vp | 1 – 30 VDC |
| Supply Source | Discontinued / NRND | Stable factory-direct from China |
Result: Compatible footprint and matching key parameters — minimizing redesign effort when switching from Murata buzzer components.
| Product Type | Piezoelectric Passive Buzzer |
| HN Model | HNR-1407 PA7.5 |
| Rated Voltage | 5 VDC |
| Operating Voltage | 1 – 30 VDC |
| Sound Output (10 cm) | ≥ 85 dB @ 4000 Hz Square Wave, 5 Vp-p |
| Current Consumption | ≤ 10 mA @ 4000 Hz Square Wave, 5 Vp-p |
| Resonant Frequency | 4000 ± 500 Hz |
| Capacitance | 12 ± 40% nF @ 1 kHz |
| Operating Temperature | -20°C ~ +70°C |
| Storage Temperature | -30°C ~ +80°C |
| Weight | ≈ 0.85 g |
| Housing Material | Black PBT |
| Dimensions | Φ14 ± 0.3 mm × 6.7 ± 0.5 mm (H) |
| Compliance | RoHS |
The HNR-1407 PA7.5 is widely used across industries as a reliable sound indicator:
| Soldering Process | Temperature | Time | Recommended |
|---|---|---|---|
| Wave Soldering | 260 ± 5°C | 4 – 6 seconds | ★ Yes |
| Manual Soldering | 350 ± 10°C | 2 – 5 seconds | ★ Yes |
Every Buzzer from Huaneng's Buzzer Solutions lineup undergoes rigorous testing to guarantee long-term field stability:
| Test Item | Condition | Requirement |
|---|---|---|
| Humidity | 50±5°C, 90–95% RH, 48 hrs | All specifications must be satisfied after test |
| High Temperature | +80±2°C, 48 hrs | |
| Low Temperature | -30±2°C, 48 hrs | |
| Temperature Cycling | -30°C ↔ +80°C, 5 cycles | |
| Drop Test | 75 cm height, 3 drops onto 10 mm hardwood | |
| Vibration | 10–55 Hz, 1.0 mm amplitude, 0.5 hrs per axis | |
| Solder Heat Resistance | 250±5°C solder bath, 10±0.5 sec | No degradation in appearance or performance |
Founded in 2013 and located in Chenbao Industrial Park, Xinghua City, Jiangsu Province, Jiangsu Huaneng Electronics Co., Ltd. is a professional manufacturer specializing in electromagnetic buzzers, piezoelectric buzzers, SMD buzzers, speakers, alarms, and customized acoustic solutions. With a factory of approximately 72,000 sq.ft., 200–300 employees, and 10 production lines, we achieve a monthly production capacity of 7–9 million pieces.
Our certifications include ISO 9001, ISO 14001, and QS 9000; all products comply with CE and RoHS standards. Over 70% of our products are exported to North America, Southeast Asia, Europe, and global markets. We provide reliable OEM and ODM Buzzer Solutions for home appliances, automotive electronics, medical devices, EVs, communications, security alarms, and industrial control — including drop-in replacements for legacy Murata Buzzer designs.
All SMD Buzzer products comply with RoHS and REACH; automotive-grade and medical low-interference custom versions available.
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Main Product:
Piezoelectric Buzzer,
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