Name: FT-140-61 / 5961002701 Ferrite Toroid Core, µi=125, for EMI filters and RF baluns
Brand: MagWave
SKU: FT-140-61
Price: 2.26 EUR
Availability: InStock
Rating: 5 (1 reviews)

Overview
Documents
Compliance

Technical Specifications

The MagWave T1G-140/050 is a ferrite component from the T1G series, designed for high-frequency RF and HF applications. Thanks to the 1G (61) ferromagnetic mix, it is particularly suitable for use in VHF and higher frequencies, offering excellent performance in both amateur radio and industrial settings.

Applications:
- EMI/RFI Suppression (Single Turn) 200 MHz – 2000 MHz (2 GHz)
- EMI/RFI Suppression (Multiple Turns) 25 MHz – 300 MHz
- Broadband Transformers 15 MHz – 200 MHz
- Balun/Unun (impedance transformation) 10 MHz – 100 MHz (or up to 300 MHz for Balun)
- Inductive/Resonant Applications Up to about 25 MHz
Initial permeability: 125 µi
Dimensions: outer diameter 36 mm, inner diameter 23 mm, height 12.7 mm
AL (nH): 140 ±25%
Curie temperature: >230 °C

Benefits

High operating frequency: ideal for VHF and UHF
Noise suppression: effective in reducing high-frequency interference
Power handling capability: larger size allows handling up to 1 kW
Versatility: suitable for RF transformers, 1:1 and 4:1 baluns, and line filters
Thermal stability: excellent performance even at high temperatures

Amidon FT140-61, Fair-Rite 5961002701 and Others: What's the Difference?

The 1.4-inch (36 mm) ferrite toroid with initial permeability µi 125 is available from various manufacturers, including Amidon, Fair-Rite, and others. Although each model may have slight aesthetic, dimensional, or AL value differences, they are technically equivalent products.

They can be used as a direct replacement for Fair-Rite 5961002701 and Amidon FT140-61 in equivalent designs.

Our MagWave™ model represents a solid alternative with excellent value for money. It offers:

High build quality
Technical specifications equivalent to leading brands
Guaranteed compatibility for 1:1 replacements in both amateur and professional projects

Choose MagWave™ for a reliable, high-performance, and cost-effective alternative.

Cross-reference table

MagWave	Amidon	Fair-Rite
T1G-140/050	FT140-61	5961002701

Specifications

Material:
1G (61)
Permeability (µ_i):
125
A_L (nH):
140
Outer diameter (metric):
36 mm
Inner diameter (metric):
23 mm
Height (metric):
12.7 mm
Outer diameter (imperial):
1.4 in
Inner diameter (imperial):
0.9 in
Height (imperial):
0.5 in

Datasheet

PDF · 219.0 kB

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Compliance

Country of origin:
CN
EU Tariff Code:
85049011
Weight:
38.00 g
RoHS:
Yes
REACH:
SVHC not present

Order code:	FRT-05
	PTFE insulated silver plated copper wire
Conditions:	N (The product is brand new)
Conductor diameter:	0.4 mm
AWG:	27
Material & finishing:	silver plated copper (CuAg)
Conductor type:	stranded (9x0.12mm)
External jacket:	PTFE
External jacket diameter:	1.1 mm
Jacket max. operating temperature:	260 °C
Colour:	yellow

Order code:	FRS-14
	Enameled copper wire spool, 20 m, ∅ 0.2 mm, AWG 32, copper Welco Plus ECW0R2C-F2
Conditions:	N (The product is brand new)
Conductor diameter:	0.2 mm
AWG:	32
Material & finishing:	enameled copper
Conductor type:	solid core
Wire length:	20 m
Colour:	natural copper

Order code:	FRS-15
	Enameled copper wire spool, 20 m, ∅ 0.2 mm, AWG 32, green Welco Plus ECW0R2G-F2
Conditions:	N (The product is brand new)
Conductor diameter:	0.2 mm
AWG:	32
Material & finishing:	enameled copper
Conductor type:	solid core
Wire length:	20 m
Colour:	green

Order code:	FRS-16
	Enameled copper wire spool, 20 m, ∅ 0.2 mm, AWG 32, red Welco Plus ECW0R2R-F2
Conditions:	N (The product is brand new)
Conductor diameter:	0.2 mm
AWG:	32
Material & finishing:	enameled copper
Conductor type:	solid core
Wire length:	20 m
Colour:	red

FT-140-61 / 5961002701 Ferrite Toroid Core, µi=125, for EMI filters and RF baluns

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Technical Specifications

Benefits

Amidon FT140-61, Fair-Rite 5961002701 and Others: What's the Difference?

Cross-reference table

Specifications

Compliance

Related products

PTFE insulated silver plated copper wire

Enameled copper wire spool, 20 m, ∅ 0.2 mm, AWG 32, copper

Enameled copper wire spool, 20 m, ∅ 0.2 mm, AWG 32, green

Enameled copper wire spool, 20 m, ∅ 0.2 mm, AWG 32, red

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