Balanced Armature FEF-27351-I04
FEF-27351-I04
Balanced armature receivers are miniature electroacoustic transducers designed to deliver precise, efficient sound reproduction in compact hearing health, true wireless stereo, and professional audio devices.
Brand: Knowles
Manufacturers:
Product Overview
Features
- Miniature balanced armature architecture with stationary coil and low‑mass diaphragm
- High acoustic efficiency enabling strong output at low power consumption
- Wide portfolio of form factors, impedances, and output levels
- Single, dual‑diaphragm, and multi‑way configurations available
- Tunable acoustic responses using venting, damping, and port options
- High‑frequency extension suitable for speech clarity and treble reproduction
Benefits
- Enables smaller device designs without compromising sound quality
- Extends battery life in wireless and wearable audio products
- Supports precise frequency tuning for application‑specific sound profiles
- Improves speech intelligibility and detail at low and high listening levels
- Simplifies multi‑driver system design for advanced audio performance
Target Applications
- Hearing aids including BTE, RIC, ITE, ITC, and CIC devices
- True Wireless Stereo (TWS) earphones and hearables
- Professional in‑ear monitors (IEMs) and stage monitoring systems
- Hybrid earphones combining dynamic woofers and BA tweeters
- Compact consumer and audiophile earphones
Specifications
| Type | Receiver |
|---|---|
| Part Number | FEF-27351-I04 |
| Product | Receiver |
| Range | FEF |
| Frequency Range | 200 Hz ~ 6.1 kHz |
| Self Resonance | - |
| Impedance | 113 Ohms |
| Sensitivity | 109.5 |
| SensitivityType | Sound Pressure Level (SPL) |
| Port Location | Side |
| Shape | Rectangular |
| Height | 0.157" (4.00mm) |
| Dimensions | 0.310" L x 0.220" W (7.87mm x 5.59mm) |
| Termination | - |