Knowles EF-28378-000
Knowles EF-28378-000

Knowles EF-28378-000

Manufacturer No:

EF-28378-000

Manufacturer:

Knowles

Description:

SPEAKR 1.275 KOHM TOP PORT 122DB

DHL
DHL
DHL

In Stock :9242

Looking for price or availability? Send us an RFQ and our sales team will respond quickly.

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Shipping & Availability

DHL
EMS
FedEx
UPS

Fast worldwide shipping via DHL, FedEx, UPS, and EMS.

Shipped from：HK Warehouse
Expected Shipping：Thu, Oct 15 - Fri, Oct 16, 2026
Date Code：Within 2 Years

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All components supplied by Aichiplink are sourced from trusted global suppliers and verified through strict in-house inspection and quality control procedures.

Quality Assurance

Certified in-house inspection and testing facilities ensure all components meet internationally recognized quality standards.

User Guide

Available from AS9120 Certified Supplier, AIChipLink delivers high-reliability electronic components supported by certified quality management, rigorous inspection processes, counterfeit mitigation controls, and full traceability systems. Our operations comply with AS9120, ISO 9001:2015, and IECQ ESD standards to support aerospace, industrial, defense, and mission-critical applications.

EF-28378-000 Information

Knowles EF-28378-000 technical specifications, attributes, parameters and parts with similar specifications to Knowles EF-28378-000.

  • Type
  • Parameter
  • Mfr
  • Knowles
  • Series
  • EF
  • Package
  • Bulk
  • Product Status
  • Active
  • Technology
  • Magnetic
  • Type
  • Receiver
  • Frequency Range
  • 200 Hz ~ 6.3 kHz
  • Impedance
  • 1.275 kOhms
  • Efficiency - dBA
  • 122.00
  • Efficiency - Type
  • Sensitivity
  • Type
  • Parameter
  • Port Location
  • Top
  • Shape
  • Rectangular
  • Termination
  • Solder Pads
  • Size / Dimension
  • 0.310" L x 0.220" W (7.87mm x 5.59mm)
  • Height - Seated (Max)
  • 0.310" (7.87mm)

EF-28378-000 FAQ

Can I request a quote for EF-28378-000?

EF-28378-000 from Knowles is ready for RFQ submission. Send your target quantity and requirements, and AIChipLink will check current availability, lead time, and quantity-based pricing.

Why is pricing not shown as a fixed value for EF-28378-000?

The final price for EF-28378-000 depends on requested quantity, supply conditions, date code, package option, and destination. An RFQ lets us return the current market quote for your order.

Which specifications should I review for EF-28378-000?

EF-28378-000 is a Knowles Audio Devices part. Key details include Height - Seated (Max): 0.310" (7.87mm) and Efficiency - Type: Sensitivity; contact us if you need the specifications verified before sourcing.

When will I receive a quotation for EF-28378-000?

After you submit the RFQ for EF-28378-000, our sales team typically replies within 24 hours with availability, unit pricing, lead time, shipping choices, and possible substitutes.

What is the expected shipping time for EF-28378-000?

Once stock for EF-28378-000 is confirmed, available inventory can generally ship within 1–2 business days. The final schedule depends on quantity, warehouse source, and delivery address.

Can AIChipLink help find alternatives to EF-28378-000?

Yes. If EF-28378-000 is unavailable, end-of-life, or outside your schedule, we can review comparable Knowles Audio Devices parts and compatible replacement options.