744821240 Würth Elektronik Inductor (Other) In Stock
Würth Elektronik 744821240 is a through-hole data line filter inductor with 4000 µH inductance per line and 1.5 A rated current, designed for two-line common-mode noise suppression. Measuring 15.0 x 7.5 x 18.0 mm with 0.14 Ω maximum DC resistance, it provides UL-approved RoHS-compliant EMI filtering for industrial and data communication interfaces. Globally stocked with worldwide shipping.
- Manufacturer
- Würth Elektronik
- Package
- Other
- Pin Count
- 4
- Lifecycle
- ACTIVE
- Datasheet
- 744821240 Datasheet PDF
- Category
- Inductor
- Price
- From $1.4348(MOQ 1)
- 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 744821240?
- 4000 µH high inductance per line for effective common-mode noise attenuation on data lines
- 1.5 A rated current with ultra-low 0.14 Ω DC resistance minimizing signal line voltage drop
- Dual-function through-hole package (15.0 x 7.5 x 18.0 mm) filtering 2 lines simultaneously
- UL-approved and RoHS/REACH compliant for global industrial and communication equipment certification
What is 744821240 used for?
The Würth Elektronik 744821240 is used to suppress common-mode EMI on data lines in industrial network interfaces, RS-485/RS-232 communication ports, and PLC I/O modules. Its 4000 µH inductance effectively attenuates high-frequency noise above 100 kHz without significantly loading signal integrity at data rates up to several hundred kbit/s. The through-hole mounting provides robust mechanical anchoring in harsh industrial control panel environments.
What are the specifications of 744821240?
| YTEOL | 15 |
| Approvals | UL |
| DC Resistance-Max | 0.14Ω |
| Filter Type | DATA LINE FILTER |
| Height | 18mm |
| Inductance | 4000 µH |
| Mounting Type | THROUGH HOLE MOUNT |
| Number of Functions | 2 |
| Physical Dimension | L15.0XB7.5XH18.0 (mm)/L0.591XB0.295XH0.709 (inch) |
| Rated Current | 1.5A |
| Rated Voltage | 250V |
| 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 744821240 datasheet?
744821240 Datasheet DownloadOfficial datasheet from Würth Elektronik
What are equivalent replacements for 744821240?
Compatible alternatives and drop-in replacements for 744821240:
suggested
suggested
Frequently Asked Questions
How effective is the 744821240 at attenuating common-mode noise on industrial data lines?
With 4000 µH inductance per line, the 744821240 provides significant common-mode attenuation starting from frequencies above approximately 10 kHz, with insertion loss exceeding 30 dB at 1 MHz under typical 1.5 A DC bias conditions. This makes it highly effective at suppressing switching noise from nearby motor drives and switched-mode power supplies on RS-485 and RS-232 data lines.
What is the maximum current the 744821240 can handle, and how does DC resistance affect signal quality?
The 744821240 is rated for 1.5 A continuous current per line, with a maximum DC resistance of 0.14 Ω per winding. At 1.5 A, the resulting resistive voltage drop is only 210 mV per line, which is well within the common-mode voltage tolerance of standard RS-485 transceivers operating from 3.3 V or 5 V supplies.
For which communication protocols and line speeds is the 744821240 data line filter best suited?
The 744821240 is optimized for low-to-medium speed data lines including RS-485 at up to 1 Mbit/s, RS-232, CAN bus at 1 Mbit/s, and 4–20 mA analog loops. Its 4000 µH inductance introduces meaningful impedance only above approximately 10 kHz, preserving signal integrity for data rates up to several hundred kbit/s in industrial Modbus, DeviceNet, and fieldbus applications.
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Why Buy from FindMyChip
About Würth Elektronik
Würth Elektronik is a leading electronic component manufacturer. FindMyChip sources Würth Elektronik ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $4.4200 | $4.42 |
| 5+ | $4.2000 | $21.00 |
| 10+ | $3.9800 | $39.80 |
| 50+ | $2.8690 | $143.45 |
| 100+ | $2.4500 | $245.00 |
| 140+ | $1.4348 | $200.87 |
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