744741221 Würth Elektronik Inductor (Other) In Stock

Name: 744741221
Brand: Würth Elektronik
SKU: 744741221
Availability: InStock

Würth Elektronik 744741221 is a 220 µH radial-leaded RF inductor with a nickel-zinc cylindrical core and 1.5 Ω DC resistance, designed for general-purpose and RF filtering applications. Its 5 mm lead spacing and 0.65 mm lead diameter suit standard through-hole PCB assembly for oscillator tank circuits and EMI filters. Available in bulk packaging with global distribution and long product lifecycle.

ACTIVEInductorVerified Jun 2026

Package / Visual Reference

744741221Other

Quick Facts

Manufacturer: Würth Elektronik
Package: Other
Pin Count: 2
Lifecycle: ACTIVE
Datasheet: 744741221 Datasheet PDF
Category: Inductor
Price: From $1.0479(MOQ 50)
Temp Range: -40.0°C to 125.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of 744741221?

220 µH nickel-zinc core RF inductor optimized for general-purpose and RF frequency filtering
Cylindrical radial package with 5 mm lead spacing for standard through-hole PCB mounting
1.5 Ω DC resistance providing effective impedance in tank and LC filter circuits
0.65 mm lead diameter ensuring robust solder joint strength in vibration-prone assemblies
Long product lifecycle (YTEOL 15 years) for stable supply chain in long-running designs

What is 744741221 used for?

The Würth Elektronik 744741221 serves as an RF choke and tank inductor in AM/FM radio receivers, oscillator circuits, and EMI suppression filters operating in the low-to-mid RF frequency range. Its 220 µH inductance and nickel-zinc core are well matched for impedance matching networks, low-pass LC filters, and resonant tank circuits in the 100 kHz to 10 MHz frequency band. The through-hole radial format suits prototyping, small-volume production, and repair applications where SMT inductors are not preferred.

What are the specifications of 744741221?

YTEOL	15
Construction	Cylindrical
Core Material	NICKEL-ZINC
DC Resistance	1.5Ω
Inductance-Nom (L)	220 µH
Inductor Application	RF INDUCTOR
Inductor Type	GENERAL PURPOSE INDUCTOR
Lead Diameter	0.65mm
Lead Length	5mm
Lead Spacing	5mm
Number of Functions	1
Package Diameter	7.8mm
Package Length	5.5mm
Package Style	Radial
Packing Method	Tray
Rated Current-Max	0.66A
Self Resonance Frequency	5MHz
Shape/Size Description	CYLINDRICAL PACKAGE
Shielded	NO
Special Feature	INDUCTANCE IS MEASURED AT 5 MILLI AMPERE
Surface Mount	NO
Terminal Placement	RADIAL
Terminal Shape	WIRE
Test Frequency	0.1MHz
Tolerance	10%
Package	Other

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
ECCN	EAR99
HTS Code	8504.50.80.00

Where can I find the 744741221 datasheet?

744741221 Datasheet Download

Official datasheet from Würth Elektronik

What are equivalent replacements for 744741221?

No known alternates. Submit an RFQ and our team can suggest alternatives.

Frequently Asked Questions

At what frequency range does the 744741221 perform best as an RF choke or tank inductor?

The 744741221 with 220 µH inductance and nickel-zinc ferrite core is optimized for the 100 kHz to 10 MHz frequency band. Below 100 kHz the 1.5 Ω DC resistance becomes relatively significant, while above 10 MHz the self-resonant frequency of the cylindrical winding typically limits Q factor. This makes it ideal for AM broadcast band (535–1705 kHz) receiver tank circuits and LC low-pass filters with cutoff frequencies in the 1 MHz to 5 MHz range.

How does the nickel-zinc core material of the 744741221 compare to ferrite or iron-powder cores for RF applications?

Nickel-zinc ferrite provides higher resistivity (10 kΩ·cm) than manganese-zinc ferrite, significantly reducing eddy current losses above 1 MHz. Compared to iron-powder cores, nickel-zinc maintains lower core loss up to 10 MHz while offering higher permeability in compact cylindrical geometries. This makes the 744741221 more suitable for RF signal path inductors than iron-powder alternatives, which are better suited to high-current power inductors below 500 kHz.

Is the 744741221 compatible with wave soldering for through-hole PCB assembly?

Yes, the 744741221 is a through-hole radial component with 5 mm lead spacing and 0.65 mm lead diameter, making it fully compatible with standard wave soldering and selective soldering processes using eutectic Sn63/Pb37 or SAC305 lead-free solder alloys. The nickel-zinc ferrite core withstands soldering temperatures up to 260°C peak for 10 seconds per IPC/JEDEC J-STD-020 without degradation of the 220 µH nominal inductance.

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AvailabilityIn Stock

Reference Price (USD)

From $1.0479

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
50+	$1.2854	$64.27
140+	$1.1438	$160.13
560+	$1.0479	$586.80

pcs

Unit price: $1.2854 · Total: $64.27

In Stock · 24h Response · Worldwide Shipping

Direct Contact

WhatsApp Inquiry Email RFQ

Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

Response within 24 hours · Worldwide shipping

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744741221 Würth Elektronik Inductor (Other) In Stock

What are the key features of 744741221?

What is 744741221 used for?

What are the specifications of 744741221?

Compliance & Regulatory

Where can I find the 744741221 datasheet?

What are equivalent replacements for 744741221?

Frequently Asked Questions

At what frequency range does the 744741221 perform best as an RF choke or tank inductor?

How does the nickel-zinc core material of the 744741221 compare to ferrite or iron-powder cores for RF applications?

Is the 744741221 compatible with wave soldering for through-hole PCB assembly?

Related Guides

STM32H725IGT3 Selection Guide: Memory, Package, Temperature, and Supply

STM32H725IGT3 High-Performance MCU Design Guide

150141VS73100 Violet SMD LED Selection Guide: Color, Drive, and Sourcing

STEF05SGR 5 V eFuse Protection Design Guide

Why Buy from FindMyChip

About Würth Elektronik

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