Hearing Instrument ED-21975-A21
ED-21975-A21
Compact, high-performance balanced armature receivers engineered for precision sound delivery in modern hearing instruments.
Brand: Knowles
Manufacturers:
Product Overview
Features
- Output levels ranging from 105 dB to 132 dB SPL at 500 Hz @ 5% THD
- Proprietary technologies including Pantograph™, Ferrofluid™, and D-Amp™ for enhanced performance
- Dual diaphragm configurations for improved output in compact form factors
- Wide range of sizes from 3.00 × 3.00 × 2.00 mm to 9.47 × 7.18 × 4.10 mm
- Available in 2- and 3-terminal versions with multiple port and impedance options
- Fully automated receiver models for consistent quality and traceability
- Shock-resistant designs with up to 30% improved durability over baseline models
Benefits
- Enables high-fidelity sound reproduction in space-constrained hearing aids
- Reduces distortion and feedback for clearer audio experiences
- Supports a wide range of hearing loss profiles, including high-frequency loss
- Enhances product reliability and manufacturing scalability
- Minimizes power consumption for longer battery life
- Improves user comfort with smaller, lighter components
- Increases design flexibility for custom-fit and over-the-counter (OTC) devices
Target Applications
- Receiver-in-canal (RIC) hearing aids
- In-the-ear (ITE), in-the-canal (ITC), and completely-in-canal (CIC) devices
- Behind-the-ear (BTE) hearing aids
- Over-the-counter (OTC) hearing enhancement products
- Bluetooth communication earpieces
- High-fidelity audio wearables
Specifications
| Type | Receiver, Balanced Armature |
|---|---|
| Part Number | ED-21975-A21 |
| Product | Receiver, Balanced Armature |
| Product Type | Balanced Armature |
| Range | ED |
| Frequency Range | 200 Hz ~ 5 kHz |
| Self Resonance | - |
| Impedance | 1.45 kOhms |
| Sensitivity | 106 |
| SensitivityType | Sensitivity |
| Port Location | Side |
| Shape | Rectangular |
| Height | 0.248" (6.30mm) |
| Dimensions | 0.248" L x 0.169" W (6.30mm x 4.29mm) |
| Termination | Solder Pads |