Mfr Part #:

55381-A2

Mfr Name: Magnetics

The Magnetics 55381-A2 is a ferrite toroid core. It offers a maximum watt loss of 950mW/cm3 at 100kHz and 100mT, with a minimum DC bias of 1000A·T/cm.

✓ Total Stock: 20 pcs

$ Price Range: $0.99

55381-A2 Available from 1 distributor

✓ Authorised

✓ Non-Authorised

Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Fe Components ✓ Non-Authorised Inventory information	20 pcs On Request	20 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

55381-A2 Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	Magnetics
Weight	960 g

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55381-A2 Description

Short technical summary and product information.

The Magnetics 55381-A2 is a high-performance ferrite toroid core designed for various magnetic applications. It features a maximum watt loss of 950mW/cm3 when operated at 100 kHz and 100mT, ensuring efficient power handling.

This toroid core provides a minimum DC bias capability of 1000 A·T/cm, making it suitable for applications requiring significant magnetic flux density. The electrical characteristics also include a voltage breakdown of 17 VAC (wire to wire) minimum.

Physically, the 55381-A2 has a window area of 23.2 mm2, a cross-section area (Ae) of 41.4 mm2, and a path length (Le) of 74.7 mm. Its volume is 7739.7 mm3 and it weighs 960g. The core operates within a temperature range, with a Curie temperature of 460°C and a continuous coating temperature rating of up to 200°C.

Packaged in bulk, the 55381-A2 is supplied in boxes of 2000 pieces. Its dimensions include an outer diameter (OD) of 17.3 mm (uncoated) to 18.1 mm (coated) and an inner diameter (ID) of 9.65 mm (uncoated) to 9.01 mm (coated). The height (HT) is 6.35 mm (uncoated) to 7.12 mm (coated).

55381-A2 Quick Information

Product Type: Ferrite Toroid

Canonical Name: Magnetics 55381-A2 Ferrite Toroid

Subcategory: Ferrite Toroid

55381-A2 Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

55381-A2 Estimated Pricing

Qty	Low	High
1+	$0.99	$0.99

Estimated market price range - modelled values for guidance only, not live distributor offers.

55381-A2 Features

High DC bias capability of 1000 A·T/cm.
Low watt loss of 950mW/cm3 at 100kHz.
Robust construction with 17 VAC voltage breakdown.
Compact dimensions for integration.
Bulk packed for efficient handling.

55381-A2 Applications

Ideal for power supply inductors.
Suitable for EMI filtering applications.
Used in switch mode power supplies.
Applicable for current transformers.

55381-A2 FAQs

6 frequently asked questions generated from this part’s specifications.

What is the maximum watt loss for the Magnetics 55381-A2?

The maximum watt loss for the 55381-A2 is 950 mW/cm3 at 100 kHz and 100mT.

What is the minimum DC bias for the 55381-A2?

The minimum DC bias for the 55381-A2 is 1000 A·T/cm.

What is the voltage breakdown rating of the 55381-A2?

The voltage breakdown rating for the 55381-A2 is a minimum of 17 VAC wire to wire.

What are the physical dimensions of the 55381-A2 toroid core?

The 55381-A2 has an outer diameter (OD) of 17.3 mm (uncoated) to 18.1 mm (coated), an inner diameter (ID) of 9.65 mm (uncoated) to 9.01 mm (coated), and a height (HT) of 6.35 mm (uncoated) to 7.12 mm (coated).

What is the Curie temperature of the 55381-A2?

The Curie temperature of the 55381-A2 is 460°C.

How is the Magnetics 55381-A2 packaged?

The 55381-A2 is packaged in Bulk Pack, with a box quantity of 2000 pieces.