Part Number: SM51589PEL

Manufacturer: Bourns

Description: Audio Transformers / Signal Transformers LAN Transformer 10/100/1000 Base-T

Shipped from: Shenzhen/HK Warehouse

Stock Available: Check with us

The SM51589PEL LAN 10/100/1000 Base-T Transformer (PoE) Module is a single-port, potted construction LAN 10/100/1000 Base-T transformer intended for use in Ethernet applications that make use of the PoE feature. This type has a unique isolation voltage of 5kVrms and can operate in temperatures ranging from -40 to +85 degrees Celsius. The operating temperature range is also enlarged. The SM51589PEL LAN 10/100/1000 Base-T Transformer (PoE) Module is an alternative component that can be used in place of the SM51589EL model that is currently in use.


  • Compliant with IEEE802.3 standards
  • Designed for 10/100/1000 Base-T and PoE
  • 5KVAC dielectric withstanding voltage
  • RoHS compliant

SM51589PEL Applications

  • LAN
  • Ethernet
  • Power over Ethernet – PoE

Frequently Asked Questions

What is a Pulse Transformer?

One type of transformer is called a pulse transformer. It is distinguished from other types of transformers because it is built and optimized specifically for transmitting voltage pulses between its two windings and the attached load. These specific transformers transmit signals in control circuits that use less power and are critical components of high-power SMPS.

What does a pulse transformer do?

A pulse transformer is an improved transformer that generates electrical pulses with a high velocity and a consistent amplitude throughout their duration. They find widespread application in transmitting digital information and transistors (particularly gate drive circuits).

What is a pulse-type transformer?

Pulse transformers are a broad family of transformers designed to transfer a digital control signal from a control circuit to a load. This transfer occurs in the opposite direction of conventional transformers. They can give galvanic isolation to a circuit while simultaneously enabling the transmission of quick control signals without distorting the structure of the signal.

What is the use of a transformer in Ethernet?

In a local area network (LAN), a transformer’s job is to transmit pulse signals at high speed while also providing other capabilities, such as isolation between the input and output. Transformers for Powering Devices Using Power Over Ethernet (POE) For the fly-back DC/DC converters necessary for Power over Ethernet (PoE) applications, a wide range of power transformers has been created. These industrial temperature range transformers comply with the isolation and power rating standards of IEEE802.3af and are recognized by UL as having a temperature range suitable for use in industrial settings.

What does 10/100/1000 Base-T mean?

When examining the hardware and wiring for a networking system, we come across references like 10/100/1000 and are left wondering what exactly these numbers signify. The Institute of Electrical and Electronics Engineers is responsible for developing the 10/100/1000 reference, an Ethernet standard (IEEE). When it comes to the transfer of data through Ethernet, the IEEE is the organization that establishes the standards. They came into existence in 1963 and are most well-known for establishing the IEEE 802 standards. Businesses use this standard as a guide for developing hardware and cable for their networks.

When we divide 10/100/1000 ethernet into its parts, we get 10 Megabits, 100 Megabits, and 1000 Megabits. When it comes to things like network cabling, for instance, you’ll find a wide variety of ratings based on the speeds involved. The amount of bandwidth a device can provide is used to classify these ratings into distinct groups (cats). Consequently, if we were using the 10/100/1000 speed rating we are discussing today, our categories would be arranged as follows:

The use of Cat5 or Cat5e cables is recommended for optimal support of 10/100. If we desired a rating of 1000 Megabits, the best option would be to use Cat6 or above. CAT5e (enhanced) can support up to 1000 Megabits because it has a better noise and signal interference reduction than plain CAT5. Still, as a professional, I always recommend using CAT6 because it will support up to 10 Gigabits in shorter runs. CAT5e (enhanced) can technically support up to 1000 Megabits because it has a better noise and signal interference reduction than plain CAT5.

What is essential to use 10/100/1000 Base-T

Let’s imagine you need to order some prints, and the only way to do so is by uploading photographs to an internet retailer. If it were 1998, and you were connected to the internet with a dial-up modem, your download speed might be 56 kbit/s. Those early years of personal computers were filled with a lot of trial and error, but thanks to advancements in technology, we can now achieve considerably higher speeds. In light of the preceding, it is essential to note that the 10/100/1000 standard determines whether your upload will take one hour or one minute. Indeed, in the 1990s, we had to wait hours to upload even the tiniest quantity of data, although the process typically takes a few minutes now. Our most recent generation of youngsters will never be able to understand the challenges faced by those of us in our 30s and 40s to bring the internet to where it is now.

When building your network, you must have a solid understanding of obtaining the highest possible bandwidth for your customers. Today’s speed benchmark for most networks is one gigabit, equal to 1000 megabits. This indicates that you will need to acquire gear and cable, such as Cat6 cable, that is rated for that speed or higher. Due to the ever-increasing data size, network bandwidth is quickly becoming one of the most crucial factors to consider.

In conclusion, the frenetic activity that characterizes the world we live in today is driven by speed. Because it is constructed on the 10/100/1000 ethernet standard, our internet backbone is highly stable. This is one of the reasons why it is used all over the world. Bandwidth is provided to us, the end users, by our service providers, who then charge us a premium for it. How many gigabytes of data we get from our mobile phone provider or how quickly the bandwidth at our homes must be for us to stream the newest movie has become the center of our life. We would live in data anarchy if not for the 10/100/1000 standard.


Thanks for reading. If you like this article, please explore the rest of our website for more great content like this one and learn more. If you have any questions about this article, please leave them in the comment section below, and we will do our best to respond to them.

If you need information or want to order SM51589PEL, contact us here at ICRFQ, your leading electronic components in china, and we will ensure you get the best product at the best price.

4.8/5 - (397 votes)
Kevin Chen