H1260NL / H1260NLT SMT LAN Transformer for 100BASE-TX Ethernet
Technical Specifications of 100BASE-TX SMT LAN Transformer
| Parameter | Specification |
|---|---|
| Part Number | H1260NL / H1260NLT |
| Device Type | SMT LAN Transformer |
| Ethernet Standard | 100BASE-TX |
| Turns Ratio | 1CT:1CT / 1:1 |
| Number of Channels | Single |
| Mounting Style | SMD |
| Operating Temperature | 0°C to 70°C |
| Storage Temperature | -20°C to +125°C |
| Isolation Voltage | 1500 VAC / 1500 VRMS |
| RoHS | Yes |
Electrical Characteristics of H1260NL / H1260NLT Pulse Transformer
| Parameter | Specification |
|---|---|
| Turns Ratio | 1:1 ±2% |
| Insertion Loss | 100 kHz: -1.2 dB max1–125 MHz: -0.2 − 0.002·f^1.4 dB max |
| Return Loss, 100BT (Zout = 100 Ω ±15%) | 0.1–30 MHz: -16 dB min30–60 MHz: -10 + 20·log10(f/60 MHz) dB min60–80 MHz: -10 dB min |
| Inductance (OCL) | 350 µH min |
| Crosstalk, Adjacent Channels | 1 MHz: -50 dB min10–100 MHz: -55 + 22·log10(f/10) dB min |
| Common Mode Rejection Ratio | 2 MHz: -50 dB min30–200 MHz: -15 + 20·log10(f/200) dB min |
| DC Resistance, 1/2 Winding | 0.65 Ω max |
| DC Resistance Imbalance | ±0.065 Ω max |
| Input-Output Isolation | 1500 VRMS min @ 60 seconds |
H1260NL / H1260NLT Ethernet Transformer Datasheet
1. H1260NL / H1260NLT Drawing - SCHEMATIC
2. H1260NL / H1260NLT Drawing - Dimensions
Key Features and Benefits of H1260NL / H1260NLT SMT LAN Magnetics
- IEEE 802.3 Compliant: Fully meets the rigorous electrical specifications for Ethernet connectivity.
- Superior Thermal Stability: Operates efficiently within a 0-70℃ temperature range.
- RoHS Compliant: Built with environmentally friendly materials and processes.
- Highly Durable Header: Utilizes thermoset plastic material with a UL 94V-0 flammability rating or better.
- Industry-Standard Soldering: Compliant with J-STD-002, J-STD-020 (MSL Level 1), and J-STD-075 (R7 profile) for reliable reflow soldering at 245°C.
FAQs About 100BASE-TX LAN Magnetics
If you need a compact SMT LAN transformer for 100BASE-TX Ethernet, the H1260NL / H1260NLT offers a practical combination of 1:1 coupling, 1500 VRMS isolation, RoHS compliance, and tape-and-reel availability. It is a solid fit for Ethernet hardware that needs dependable signal integrity and streamlined surface-mount production.
1. Is H1260NL the same as H1260NLT?
Yes. H1260NLT is the tape-and-reel packaging version of H1260NL; the datasheet states that adding the “T” suffix indicates tape & reel packaging.
2. What Ethernet speed does the H1260NL support?
The datasheet specifies 100BASE-TX support.
3. What is the isolation rating?
The datasheet lists 1500 VRMS minimum for 60 seconds and also identifies the isolation voltage as 1500 VAC.
4. Is this transformer suitable for SMT assembly?
Yes. The part is specified as an SMD / SMT device.
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