Material Selection Guide
How to Choose the Right Taconic Material for Your Design
The optimal Taconic laminate depends on three primary factors: operating frequency, acceptable insertion loss, and cost sensitivity. Here is a practical selection framework based on our manufacturing experience across thousands of Taconic builds.
Below 6 GHz, Cost-Sensitive Projects - RF-35
For commercial RF applications operating below 6 GHz - including sub-6 GHz 5G NR (n77/n78/n79 bands), Wi-Fi 6E, GPS/GNSS L1/L2/L5, Bluetooth 5.x, and general ISM-band designs - RF-35 is the natural first choice. It provides RO4350B-class dielectric performance (Dk 3.50, Df 0.0018 at 10 GHz). While it requires plasma desmear for via reliability, its overall cost (material + processing) remains highly competitive for volume production. The material is stocked at APTPCB for immediate production start.
6-20 GHz with Moderate Loss Budget - TLX
When operating frequency moves into the 6-20 GHz range - covering C-band (4-8 GHz), X-band (8-12 GHz), and lower Ku-band (12-18 GHz) applications such as military surveillance radar, weather radar, satellite IF processing, and point-to-point backhaul radios - TLX (Dk 2.45-2.65, Df 0.0019 at 10 GHz) provides a good balance of loss performance and cost. TLX is a PTFE substrate requiring plasma desmear, but its higher Dk compared to TLY enables more compact microstrip trace widths, reducing board footprint.
Above 20 GHz or Where Ultra-Low Loss Is Required - TLY-5A
For applications operating above 20 GHz - including Ka-band SATCOM (26.5-40 GHz), E-band point-to-point links (71-86 GHz), military Ka/Q-band radar, and any design where insertion loss is the binding performance constraint - TLY-5A (Dk 2.17, Df 0.0009 at 10 GHz) delivers Taconic's absolute lowest dielectric loss. This is Taconic's direct equivalent to Rogers RT/duroid 5880, and our factory processes both materials with identical plasma desmear, drill, and lamination workflows.
Miniaturized Antennas & High-Dk Applications - CER-10
When physical antenna or filter dimensions must be minimized - for example, in automotive 77 GHz radar sensor housings or handheld device embedded antennas - CER-10 (Dk 10.0) enables antenna elements approximately 1/sqrt(10) ~ 0.32x the linear dimension of an equivalent design on a standard Dk 3.5 substrate. The trade-off is higher dielectric loss (Df 0.0035 at 10 GHz) compared to pure PTFE, plus the additional processing complexity of plasma desmear.