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PK-27H35WQ
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Product Detailed Parameters
- Description：3-20DC 90-110DB 3500HZ CONT 30X1
- Series：PK
- Mfr：Mallory Sonalert Products Inc.
- Package：Bulk
- Driver Circuitry：Indicator, Internally Driven
- Input Type：DC
- Frequency：3.5kHz
- Technology：Piezo
- Operating Mode：Single Tone
- Duration：-
- Sound Pressure Level (SPL)：100dB @ 12V, 30cm
- Current - Supply：20mA
- Port Location：Top
- Operating Temperature：-20°C ~ 90°C
- Approval Agency：-
- Ratings：-
- Ingress Protection：-
- Mounting Type：Through Hole
- Termination：Wire Leads
- Height - Seated (Max)：0.638" (16.20mm)
- Voltage - Rated：12 V
- Voltage Range：3 ~ 20V
- Size / Dimension：1.181" Dia (30.00mm)
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Overview
The PK-27H35WQ is an internally driven piezoelectric buzzer from the Mallory Sonalert PK series. It operates on a 12 VDC nominal voltage with a range of 3 to 20 VDC. The device produces a continuous tone at 3.5 kHz with a sound pressure level of 90 to 110 dBA. Rated current is 20 mA. It features wire lead termination and flange mount installation. Dimensions are 30 mm diameter by 16 mm height.
Feature Summary
- Internally driven piezoelectric technology for simplified circuit integration
- Continuous tone output optimized for industrial alerting applications
- Flange mount design with wire lead connections for secure panel installation
Applications
- Industrial machinery status indicators
- Equipment fault alarms
- Control panel audio signaling
Procurement Notes
Verify the specific sound pressure level requirement, as specifications indicate a range of 90 to 110 dBA. Confirm that the 3 to 20 VDC operating range aligns with the target system voltage. Ensure the flange mount style and wire lead termination are compatible with the enclosure design before finalizing procurement.
Selection Notes
Select this component when a high-decibel continuous audible alarm is required for industrial environments. The internal driver simplifies design by eliminating external oscillators. Consider the 30 mm form factor for panel cutout compatibility. Verify ambient noise levels to ensure the 90-110 dBA output provides sufficient audibility.
Part Context
This part belongs to the Mallory Sonalert PK series, which specializes in industrial-grade piezoelectric buzzers. The series is known for robust construction and reliable performance in demanding environments. PK devices typically feature internal drivers and standardized mounting dimensions for easy replacement in existing equipment designs.
Replacement Considerations
Check for PK-27N35WQ or PK-27A35WQ if different voltage ranges or sound levels are acceptable. Verify that physical dimensions and terminal types match the existing assembly to ensure direct interchangeability without mechanical modification.
