Transmission Lines

SemiGens 50-ohm Transmission Lines offer the RF/microwave designer complete flexibility and repeatability for the most challenging applications.

Request a Quote

W0 for various size substrates:

0.00463” for 0.005” Alumina

0.00957” for 0.010” Alumina

0.01433” for 0.015” Alumina

0.01920” for 0.020” Alumina

0.02446” for 0.025” Alumina

Ordering Information for Transmission Lines

Our 50 Ohm Microstrip Transmission Lines are offered as individual items or can be purchased in assorted quantities through one of our convenient engineering kits. Please contact us for pricing and details. Microstrip Transmission lines are usually available within 2 weeks of order in a variety of lengths, widths, and substrate thicknesses. Please see the tables below for standard product specifications. If your needs require something not offered as a standard product, SemiGen can also fabricate custom transmission lines built to your specifications. Please see our custom section for details.

SemiGen 50-Ohm Microstrip Transmission Line Specifications: Part Numbers, Loss and Impedance at 5 GHz, 15 GHz, and 30 GHz for Various Alumina Substrate Thicknesses
	5 Ghz		15 Ghz		30 Ghz
Part #	Loss (DB)	Impedance Z0 (Ohms)	Loss (DB)	Impedance Z0 (Ohms)	Loss (DB)	Impedance Z0 (Ohms)
Z50-005-035-050	0.027	49.98	0.047	49.95	0.066	50.04
Z50-005-035-100	0.054	49.98	0.093	49.95	0.132	50.04
Z50-005-035-150	0.081	49.98	0.14	49.95	0.198	50.04
Z50-005-035-200	0.109	49.98	0.187	49.95	0.265	50.04
Z50-005-035-250	0.136	49.98	0.234	49.95	0.331	50.04
Z50-005-035-500	0.271	49.98	0.467	49.95	0.662	50.04
Z50-005-070-050	0.027	49.98	0.047	49.95	0.066	50.04
Z50-005-070-100	0.054	49.98	0.093	49.95	0.132	50.04
Z50-005-070-150	0.081	49.98	0.14	49.95	0.198	50.04
Z50-005-070-200	0.109	49.98	0.187	49.95	0.265	50.04
Z50-005-070-250	0.136	49.98	0.234	49.95	0.331	50.04
Z50-005-070-500	0.271	49.98	0.467	49.95	0.662	50.04
0.010” Alumina Series available in .070 and .100 mil widths
	5 Ghz		15 Ghz		30 Ghz
Part #	Loss (DB)	Impedance Z0 (Ohms)	Loss (DB)	Impedance Z0 (Ohms)	Loss (DB)	Impedance Z0 (Ohms)
Z50-010-070-050	0.015	49.58	0.025	49.65	0.035	50.42
Z50-010-070-100	0.029	49.58	0.05	49.65	0.07	50.42
Z50-010-070-150	0.044	49.58	0.075	49.65	0.105	50.42
Z50-010-070-200	0.058	49.58	0.1	49.65	0.141	50.42
Z50-010-070-250	0.073	49.58	0.125	49.65	0.176	50.42
Z50-010-070-500	0.145	49.58	0.25	49.65	0.352	50.42
Z50-010-100-050	0.015	49.58	0.025	49.65	0.035	50.42
Z50-010-100-100	0.029	49.58	0.05	49.65	0.07	50.42
Z50-010-100-150	0.044	49.58	0.075	49.65	0.105	50.42
Z50-010-100-200	0.058	49.58	0.1	49.65	0.141	50.42
Z50-010-100-250	0.073	49.58	0.125	49.65	0.176	50.42
Z50-010-100-500	0.145	49.58	0.25	49.65	0.352	50.42
0.015” Alumina Series available in .70 and .105 mil widths
	5 Ghz		15 Ghz		30 Ghz
Part #	Loss (DB)	Impedance Z0 (Ohms)	Loss (DB)	Impedance Z0 (Ohms)	Loss (DB)	Impedance Z0 (Ohms)
Z50-015-070-050	0.01	49.76	0.014	49.84	0.019	50.38
Z50-015-070-100	0.02	49.76	0.029	49.84	0.038	50.38
Z50-015-070-150	0.03	49.76	0.043	49.84	0.057	50.38
Z50-015-070-200	0.04	49.76	0.057	49.84	0.076	50.38
Z50-015-070-250	0.051	49.76	0.071	49.84	0.095	50.38
Z50-015-070-500	0.101	49.76	0.143	49.84	0.191	50.38
Z50-015-105-050	0.01	49.76	0.014	49.84	0.019	50.38
Z50-015-105-100	0.02	49.76	0.029	49.84	0.038	50.38
Z50-015-105-150	0.03	49.76	0.043	49.84	0.057	50.38
Z50-015-105-200	0.04	49.76	0.057	49.84	Z0.076	50.38
Z50-015-105-250	0.051	49.76	0.071	49.84	0.095	50.38
Z50-015-105-500	0.101	49.76	0.143	49.84	0.191	50.38
0.020” Alumina Series available in 100 mil widths
	5 Ghz		15 Ghz		30 Ghz
Part #	Loss (DB)	Impedance Z0 (Ohms)	Loss (DB)	Impedance Z0 (Ohms)	Loss (DB)	Impedance Z0 (Ohms)
Z50-020-100-050	0.008	49.7	0.011	49.94	0.013	50.53
Z50-020-100-100	0.015	49.7	0.022	49.94	0.027	50.53
Z50-020-100-150	0.023	49.7	0.033	49.94	0.04	50.53
Z50-020-100-200	0.031	49.7	0.044	49.94	0.053	50.53
Z50-020-100-250	0.039	49.7	0.054	49.94	0.066	50.53
Z50-020-100-500	0.077	49.7	0.109	49.94	0.133	50.53
0.025” Alumina Series available in 100 and 171 mil widths
	5 Ghz		15 Ghz		30 Ghz
Part #	Loss (DB)	Impedance Z0 (Ohms)	Loss (DB)	Impedance Z0 (Ohms)	Loss (DB)	Impedance Z0 (Ohms)
Z50-025-100-050	0.006	49.33	0.009	49.78	0.011	50.8
Z50-025-100-100	0.013	49.33	0.018	49.78	0.021	50.8
Z50-025-100-150	0.019	49.33	0.027	49.78	0.032	50.8
Z50-025-100-200	0.025	49.33	0.035	49.78	0.043	50.8
Z50-025-100-250	0.031	49.33	0.044	49.78	0.054	50.8
Z50-025-100-500	0.063	49.33	0.088	49.78	0.107	50.8
Z50-025-171-050	0.006	49.33	0.009	49.78	0.011	50.8
Z50-025-171-100	0.013	49.33	0.018	49.78	0.021	50.8
Z50-025-171-150	0.019	49.33	0.027	49.78	0.032	50.8
Z50-025-171-200	0.025	49.33	0.035	49.78	0.043	50.8
Z50-025-171-250	0.031	49.33	0.044	49.78	0.054	50.8
Z50-025-171-500	0.063	49.33	0.088	49.78	0.107	50.8

Features:

Characterized and ready for use right out of the box
All tabulated data includes > 3 skin depths of AU— loss and impedance specifications are guaranteed
Suitable for Au/Sn and Au/Ge attachment
Substrate is polished 99.6% alumina
Microstrip Transmission Lines are available in thicknesses of 5 mil, 10 mil, 15 mil, 20 mil, and 25 mil with tolerances of +/- 1 mil.

Applications:

Ion Milling process creates vertical conductor walls with no undercutting and 100% repeatability so production results are guaranteed to conform to model test data. Metallization is 3-4 microns plated Au over Ti/Pt/Au sputtered seed layer both sides.

Micro Strinp Transmission Lie