40ST1041H is a quad port transformer from Bothhand USA, compatible with IEEE 802.3 Ethernet standard, designed for multiport repeater and Ethernet switching HUB application.
The 40ST1041H is a 40‑pin SMD Ethernet 10/100 BASE quad‑port transformer designed for multi‑port repeater and Ethernet switching HUB applications and complies with IEEE 802.3 Ethernet standards. It is surface‑mountable and available for custom customer designs.
Key specifications include a 1:1 turns ratio, 1500 Vrms isolation voltage, 2.5 ns typical rise time, operating temperature from 0 °C to +70 °C, and insertion loss of –1.15 dB (0.3‑100 MHz). Additional parameters such as return loss, cross‑talk and DCMR are also listed. This manual is written in Chinese.
| Operating Temperature Range | 0 °C to +70 °C |
|---|
The transformer operates from 0 °C to +70 °C.
It is designed for multi‑port repeater and Ethernet switching HUB applications and is IEEE 802.3 Ethernet compatible.