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B66421G0000X187

Product Status	Production
Core shape	E(EFD)
Feature	GeneralFor general purpose
Material Name	Mn-Zn
Ferrite Material	N87
Brand	EPCOS
Environmental Compliance Click to learn more about these icons

Ferrite Cores B66421

Images are for reference only and show example products.

Size

Size (IEC 62317) AxBxC	EFD 25/13/9
Detail Size Information	Please refer to the data sheet

Electrical Characteristics

Core Factor	0.98mm⁻¹
Effective Cross-Sectional Area	58mm²
Effective Magnetic Path Length	57mm
Effective Core Volume	3310mm³
AL Value / (nH / N²)	2000 +30,-20%
Core Loss / (W / set) [Max.]	1.8 (200mT, 100kHz, 100°C)
Air Gap	0 mm
Weight	16.6g

Electrical Characteristics (Material)

Initial Permeability μi	2200 Nom.
Saturation Magnetic Flux Density Bs / mT	390 (100°C)
Curie Temperature Tc [Min.]	210°C
Core Loss / (kW / m³) [Max.]	375

Distributor Stock Info

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Part Number: B66421G0000X187

Part Number	Distributor	Buy from Distributor	Stock Quantity	Country	Info Last Updated
B66421-G0000-X187	Elna Magnetics Click to know about this distributor		1,383	US	2025/10/29
B66421G0000X187	Melchioni s.p.a. Click to know about this distributor		6,500	IT	2025/10/31
B66421G0000X187	Buerklin GmbH & Co. Click to know about this distributor	Buy Now	1,800	DE	2025/11/04
B66421G0000X187	DigiKey Click to know about this distributor	Buy Now	6,689	Multiple	2025/11/04
B66421G0000X187	element14 Click to know about this distributor	Buy Now	2,890	SG	2025/11/04
B66421G0000X187	Farnell, An Avnet Company Click to know about this distributor	Buy Now	2,890	Multiple	2025/11/04
B66421G0000X187	Newark, An Avnet Company Click to know about this distributor	Buy Now	2,890	US	2025/11/04
B66421G0000X187	RS Click to know about this distributor	Buy Now	300	GB	2025/11/04
B66421G0000X187	Anglia Components Plc Click to know about this distributor	Buy Now	2,375	GB	2025/11/05
B66421G0000X187	Arrow Electronics (UK) Ltd. Click to know about this distributor	Buy Now	1,300	Multiple	2025/11/05
B66421G0000X187	Gateway Electronic Components Click to know about this distributor		2,148	GB	2025/11/05

Part Number:

B66421G0000X187

B66421-G0000-X187

Distributor	Elna Magnetics
Buy from Distributor
Stock Quantity	1,383
Country	US
Info Last Updated	2025/10/29

B66421G0000X187

Distributor	Melchioni s.p.a.
Buy from Distributor
Stock Quantity	6,500
Country	IT
Info Last Updated	2025/10/31

B66421G0000X187

Distributor	Buerklin GmbH & Co.
Buy from Distributor	Buy Now
Stock Quantity	1,800
Country	DE
Info Last Updated	2025/11/04

B66421G0000X187

Distributor	DigiKey
Buy from Distributor	Buy Now
Stock Quantity	6,689
Country	Multiple
Info Last Updated	2025/11/04

B66421G0000X187

Distributor	element14
Buy from Distributor	Buy Now
Stock Quantity	2,890
Country	SG
Info Last Updated	2025/11/04

B66421G0000X187

Distributor	Farnell, An Avnet Company
Buy from Distributor	Buy Now
Stock Quantity	2,890
Country	Multiple
Info Last Updated	2025/11/04

B66421G0000X187

Distributor	Newark, An Avnet Company
Buy from Distributor	Buy Now
Stock Quantity	2,890
Country	US
Info Last Updated	2025/11/04

B66421G0000X187

Distributor	RS
Buy from Distributor	Buy Now
Stock Quantity	300
Country	GB
Info Last Updated	2025/11/04

B66421G0000X187

Distributor	Anglia Components Plc
Buy from Distributor	Buy Now
Stock Quantity	2,375
Country	GB
Info Last Updated	2025/11/05

B66421G0000X187

Distributor	Arrow Electronics (UK) Ltd.
Buy from Distributor	Buy Now
Stock Quantity	1,300
Country	Multiple
Info Last Updated	2025/11/05

B66421G0000X187

Distributor	Gateway Electronic Components
Buy from Distributor
Stock Quantity	2,148
Country	GB
Info Last Updated	2025/11/05

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