Abracon ALANL100X1-DE12DT is a single-port 10/100BASE-TX LAN transformer module designed for Fast Ethernet applications. This 12‑pin, low-profile SMD module provides 1CT:1CT transmit and 1CT:1CT receive transformers with 350 µH minimum inductance, low leakage inductance, and low interwinding capacitance. It meets IEEE 802.3u requirements, supports an operating temperature range of −40°C to +85°C, and is supplied on tape-and-reel (2,000 pcs/reel).
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| Transformer type | LAN 10/100 Base‑T |
| Turns ratio (TX/RX) | 1CT:1CT (TX), 1CT:1CT (RX) |
| Inductance | 350 (min)µH |
| Leakage inductance | 0.5 (max)µH |
| Interwinding capacitance | 30 (max)pF |
| DCR (primary) | 1.0 (max)Ω |
| DCR (secondary) | 1.5 (max)Ω |
| Hi-Pot (isolation voltage) | 1500Vrms |
| Insertion loss | 1.2 max (0.5–100 MHz)dB |
| Return loss | ≥18 (1–40 MHz), ≥14.4 (60 MHz), ≥12 (80 MHz), ≥10 (100 MHz)dB |
| Crosstalk | ≥45 (30 MHz), ≥40 (60 MHz), ≥35 (100 MHz)dB |
| CMRR | ≥43 (30 MHz), ≥37 (60 MHz), ≥33 (100 MHz)dB |
| Operating temperature | -40 to +85°C |
| MSL | 1 |
| Package dimensions (L × W × H) | 12.7 × 7.1 × 2.1mm |
| Lead style | Gull Wing |
| Number of terminals | 12 |
| Mounting | Surface Mount |
| Weight per piece | 0.33g |
| Ieee | Meets IEEE 802.3u (10/100BASE‑T) |
| RoHS | RoHS / RoHS II compliant (EU RoHS) |
| REACH | REACH SVHC compliant per Abracon certificate (Rev Z, 2025‑06‑25) |
| ECCN | EAR99 |
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