TEW5111 is a receive transformer designed for use with MITEL MT89760 and MT89790 devices. It meets ANSI T1.408 and CCITT I.431 longitudinal balance and T1.408, G.703 and BS6328 return loss requirements. Typical applications include: primary rate ISDN network nodes, PBX or computer to T1/CEPT digital trunks, TDM multiplexers.
The TEW5111 is a receive transformer approved for use with devices such as MITEL MT89760 and MT89790, low‑profile surface‑mount equipment, and primary‑rate ISDN network nodes. Typical applications include PBX or computer connections to T1/CEPT digital trunks and TDM multiplexers.
The handbook lists mechanical details (e.g., pin‑4 spacing 12.2 mm, footprint dimensions up to 7.62 mm) and electrical specifications such as a 100 Ω line impedance, turns ratio 1:14:41, inductance >2.0 mH, dielectric strength 1500 V rms, and compliance with ANSI T1.408, CCITT 1.431, G.703 and BS6328 standards.
| Line Impedance | 100 Ω |
|---|---|
| Turns Ratio (3‑6):(4‑5):(1‑8) | 1:14:41 |
| Inductance (1‑8) (mH) | >2.0 |
| Dielectric Strength (Vrms) | 1500 |
| Pulse Mask | 11 CEPT |
It is approved for use with MITEL MT89760, MITEL MT89790, and low‑profile surface‑mount devices.
The TEW5111 has a line impedance of 100 Ω.
The transformer is rated for a dielectric strength of 1500 V rms.