SM41126EL Bourns Integrated Circuit (Other) In Stock
Bourns SM41126EL is a 10/100BASE-TX LAN transformer module with integrated common mode choke (CMC), supporting 4 channels with 1500 V isolation and 350 µH primary inductance. Provides complete magnetic isolation for Fast Ethernet interfaces in a compact surface mount package. Available from stock worldwide with competitive pricing.
- Manufacturer
- Bourns
- Package
- Other
- Pin Count
- 16
- Lifecycle
- ACTIVE
- Datasheet
- SM41126EL Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Integrated 4-channel 10/100BASE-TX transformer with common mode choke (CMC) in a single surface mount module, reducing BOM count and board space
- 1500 V isolation voltage meeting IEEE 802.3 requirements for robust protection against ground potential differences in Ethernet networks
- 350 µH primary inductance and 4 mm height profile in a 13-inch tape-and-reel package for automated high-volume SMT assembly
Applications
The SM41126EL is designed for 10/100BASE-TX Ethernet port isolation in network switches, routers, industrial Ethernet gateways, and embedded computing platforms. Its integrated common mode choke and 1500 V isolation make it suitable for applications requiring EMI suppression and galvanic isolation in harsh industrial or telecommunications environments.
Specifications
| Factory Lead Time | 16Weeks |
| YTEOL | 7.39 |
| Application | LAN |
| Height | 4mm |
| Isolation Voltage | 1500V |
| JESD-609 Code | e3 |
| Mounting Feature | SURFACE MOUNT |
| Number of Functions | 4 |
| Packing Method | TR, 13 INCH |
| Primary Inductance | 350 µH |
| Surface Mount | YES |
| Terminal Finish | Tin (Sn) |
| Transformer Type | DATACOM TRANSFORMER |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| ECCN | EAR99 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What isolation voltage and primary inductance does the SM41126EL provide for Ethernet designs?
The SM41126EL provides 1500 V isolation voltage and 350 µH primary inductance, meeting IEEE 802.3 requirements for 10/100BASE-TX Ethernet isolation. These specifications ensure robust galvanic separation between the PHY and the cable interface, protecting sensitive circuitry from common mode noise and ground potential differences in network equipment.
How many Ethernet channels does the SM41126EL support, and what speeds does it cover?
The SM41126EL supports 4 channels and covers both 10BASE-T and 100BASE-TX Ethernet speeds, making it suitable for quad-port switch or router designs. Each channel includes an integrated common mode choke for EMI suppression, and the module is available in 13-inch tape-and-reel packaging for automated SMT placement in high-volume production.
What is the mounting style and height profile of the SM41126EL, and how does this affect PCB layout?
The SM41126EL uses surface mount (SMT) mounting with a 4 mm component height. This low-profile design is advantageous for space-constrained PCB layouts in compact network appliances and embedded systems. Its SMT footprint enables automated reflow soldering and is compatible with standard pick-and-place equipment for efficient high-volume manufacturing.
In which industrial applications is the SM41126EL LAN transformer module most commonly used?
The SM41126EL is commonly used in industrial Ethernet switches, programmable logic controllers (PLCs), building automation gateways, and ruggedized embedded computers requiring 10/100BASE-TX connectivity with 1500 V isolation. The integrated CMC reduces EMI emissions by at least 20 dB in typical designs, making it compliant with FCC Class B and CISPR 22 emissions standards.
Related Guides
1.5KE Series TVS Diode EOL Cross-Reference and Equivalent Replacements
Cross-reference guide for EOL 1.5KE TVS diodes (1.5KE15A, 1.5KE36A, 1.5KE200A, 1.5KE100CA). Match standoff voltage, polarity, and 1500W rating to find active equivalents.
Jun 16, 2026
Microchip Serial EEPROM NRND Cross-Reference Guide: 25LC080, 25AA640, 25AA080, 24C08 to Active Equivalents
Cross-reference guide for Microchip NRND serial EEPROMs: 25LC080, 25AA640, 25AA080A (SPI) and 24C08B (I2C) to active A/B-revision drop-in replacements.
Jun 16, 2026
1N5817 / 1N5820 / 1N5822 Schottky Diode Cross-Reference: Active Drop-In Replacements
Find active drop-in replacements for obsolete 1N5817, 1N5820, and 1N5822 Schottky rectifiers. Compare specs, cross-reference table, and sourcing tips.
Jun 16, 2026
ADSP-2147x SHARC DSP Selection Guide: How to Choose the Right Variant for Your Audio Design
Compare ADSP-21477, ADSP-21478, and ADSP-21479 SHARC+ DSP variants by clock speed, memory, package, and temperature grade to find the right fit for your audio DSP design.
Jun 16, 2026
Why Buy from FindMyChip
About Bourns
Bourns is a leading electronic component manufacturer. FindMyChip sources Bourns ICs directly from authorized China distributors, offering competitive pricing and reliable stock.
More from Bourns
3214X-1-202E
Other
Variable Resistor
5250-RC
Inductors, Axial Diameter Horizontal Mounting
Inductor
5.0SMDJ54CA-Q
Diodes Moulded Non Polarised
TVS Diode (Bi-directional)
5.0SMDJ75A-Q
Diodes Moulded
TVS Diode (Uni-directional)
51AAA-C24-B15L
Other
Variable Resistor
5800-103-RC
Inductors, Axial Diameter Horizontal Mounting
Inductor
In Stock · 24h Response · Worldwide Shipping
Response within 24 hours · Worldwide shipping
“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”