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SFM-1240-03 SMD externally-driven piezo transducer, 76dB minimum SPL at 4.0kHz, 3Vp-p square wave. Compact 12x12mm package with 1.9mm height.
Mfr Part #:

SFM-1240-03

Available from 1 distributors
Mfr Name: East Electronics
East Electronics
SMD externally-driven piezo transducer, 76dB minimum SPL at 4.0kHz, 3Vp-p square wave. Compact 12x12mm package with 1.9mm height.
✓ Total Stock: 3,925 pcs

SFM-1240-03 Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Braun Electronic Components ✓
Non-Authorised Inventory information
3,925 pcs
On Request
3925 pcs On Request 1 On Request On Request On Request On Request On Request
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SFM-1240-03 Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Capacitance
Current
Driver Circuitry
Frequency
Height
Input Type
Lead Style
Length
Mounting Type
Operating Mode
Operating Temperature
Port Location
SVHC Present
Sound Pressure Level (SPL)
Technology
Termination
Voltage
Voltage Range
Weight
Width
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SFM-1240-03 Description

Short technical summary and product information.

The East Electronics SFM-1240-03 is a surface mount externally-driven piezo transducer. It generates a minimum sound pressure level of 76dB at 4.0kHz when driven by a 3Vp-p square wave at 10cm distance. The resonant frequency is 4.0kHz ±0.5kHz with a typical capacitance of 15nF ±25% at 1000Hz.

 

This transducer is designed for single tone operation and accepts a peak-to-peak signal up to 30Vp-p maximum. Maximum current consumption is 3mA at 4.0kHz, 3Vp-p square wave. Operating temperature range is -40°C to 120°C, making it suitable for demanding environments.

 

The package measures 12.00mm x 12.00mm with a height of 1.9mm, weight 0.5g. The case is made of black LCP (Liquid Crystal Polymer) with Cu/Sn-plated pins. It is compatible with 260°C reflow soldering. Solder paste thickness should not be below 0.2mm.

SFM-1240-03 Quick Information

Product Type: Piezo Transducer
Series: SFM-1240-03
Canonical Name: SMD External-Driven Piezo Transducer SFM-1240-03
Subcategory: External-Driven Piezo Transducer

SFM-1240-03 Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 2
REACH Status: REACH Unaffected

SFM-1240-03 Features

  • Minimum SPL of 76dB at 4.0kHz.
  • Compact 12x12mm SMD package.
  • Wide operating temperature range -40°C to 120°C.
  • Compatible with 260°C reflow soldering.
  • Externally driven with peak-to-peak signal.

SFM-1240-03 Applications

  • Used in consumer electronics for audible alerts.
  • Ideal for industrial automation indicators.
  • Suitable for automotive warning systems.
  • Applied in IoT and smart home devices.
  • Common in medical device alarms.

SFM-1240-03 FAQs

7 frequently asked questions generated from this part’s specifications.
What is the allowable input voltage?

Maximum allowable input voltage is 30Vp-p.

What is the resonant frequency?

4.0kHz ±0.5kHz.

What is the sound pressure level?

Minimum 76dB at 4.0kHz, 3Vp-p square wave, 10cm distance. Typical 66.5dB at 3V, 30cm.

What type of driver circuitry does this transducer require?

Externally driven transducer requiring peak-to-peak signal.

What is the mounting type and termination?

Surface mount with solder pads.

What is the operating temperature range?

-40°C to 120°C.

What is the case material?

LCP (Liquid Crystal Polymer) black.

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