Taconic TLX-8 PCB

Taconic TLX-8 high frequency RF PCB — Dk 2.55 ± 0.04, ultra-low loss PTFE woven-glass laminate

Overview

Taconic is the world’s largest producer of PTFE copper-clad laminates, holding the patent for uniform PTFE coating on woven glass. TLX-8 is a grade within the TLX series with a tightly controlled dielectric constant of 2.55 ± 0.04 at 10 GHz.

With ultra-low dissipation factor (0.0017 @10 GHz) and low moisture absorption, TLX-8 is ideal for low-layer-count microwave designs — antennas, mixers, splitters, filters, combiners and other passive RF components. It is suitable for radar, mobile communications, test equipment and microwave transmission.

Technical Data

Key Specifications — Taconic TLX-8

Parameter	Taconic TLX-8
Dielectric Constant (εr, 10 GHz)	2.55 ± 0.04
Dissipation Factor @1.9 GHz	0.0012
Dissipation Factor @10 GHz	0.0017
Dielectric Thickness	0.064 – 6.35 mm (0.0025 – 0.250 in)
Thermal Conductivity	0.19 W/m·K
Moisture Absorption	0.02 %
PIM (Passive Intermodulation)	< -160 dBc
CTE (Z axis, 25–260 °C)	215 ppm/°C
Decomposition Temp (Td, 2% / 5%)	535 °C / 553 °C
Density	2.25 g/cm³
Copper Foil Options	1/2, 1, 2 oz (17–70 µm) ED & RT
Flammability	UL 94 V-0

Per Taconic TLX-8 Typical Values (IPC-TM-650 test methods). Confirm exact grade, thickness & copper availability at quotation.

Other Taconic TLX Grades

TLX-8 is one of five grades in the 2.45–2.65 Dk window. Andwin stocks and fabricates them all.

Taconic TLX-0

DK 2.45 ± 0.04

Taconic TLX-9

DK 2.50 ± 0.04

Taconic TLX-7

DK 2.60 ± 0.04

Taconic TLX-6

DK 2.65 ± 0.04

Why Taconic TLX-8

Features of Taconic TLX-8

The cost-effective member of the RO4000 family — low loss and stable Dk without the PTFE price tag.

Stable Dk 2.55

Tightly controlled dielectric constant (±0.04) for predictable impedance.

Ultra-low loss

Df 0.0017 @10 GHz, 0.0012 @1.9 GHz — low-loss at economy PTFE price.

Excellent PIM

< -160 dBc passive intermodulation — ideal for antennas & combiners.

Low moisture

0.02% absorption keeps electricals stable in humid conditions.

Woven glass / PTFE

Patented uniform PTFE coating on woven glass — dimensionally stable.

UL 94 V-0

Flammability rated, rugged & reliable for harsh environments.

Raw Material & Supplier

Taconic Corporation
World’s largest PTFE CCL manufacturer and leader in microwave laminate technology. Andwin stocks TLX-8 raw laminate and offers short lead times.

Andwin Circuits

Why Choose Us?

✓ Stock & fast

TLX-8 raw material in stock, short lead time.

✓ Since 2003

ISO 9001 / IATF 16949 certified manufacturer.

✓ TLX expertise

Experienced engineers ensure Taconic TLX quality.

✓ Mass production

Dedicated line, reasonable price at volume.

✓ Free samples

Prototype coupons available on request.

✓ Professional service

Easy, responsive communication from quote to delivery.

TLX-8 vs FR-4

Taconic TLX-8 vs Standard FR-4

Property	Taconic TLX-8	Standard FR-4
Best use	Low-layer-count microwave / antenna	General digital & power
Dielectric constant	2.55 ± 0.04 (low)	~4.2–4.5 (varies)
Dissipation factor	0.0017 @10 GHz	~0.02 (far higher loss)
PIM	< -160 dBc	Poor
Dielectric thickness	0.064–6.35 mm	Standard range
Cost	Economy PTFE (premium vs FR-4)	Economy

Frequently Asked Questions

1.What is the dielectric constant of TLX-8?

TLX-8 has a tightly controlled dielectric constant of 2.55 ± 0.04 at 10 GHz — the middle of the TLX 2.45–2.65 window.

2.How low is the loss of TLX-8?

Dissipation factor is 0.0012 at 1.9 GHz and 0.0017 at 10 GHz, with PIM below -160 dBc — suitable for low-loss passive RF.

3. Which TLX grades does Andwin stock?

All five grades — TLX-0, TLX-9, TLX-8, TLX-7 and TLX-6 — are available from raw laminate stock, with dielectric thicknesses from 0.064 to 6.35 mm.

4. Can TLX-8 be processed like FR-4?

No. TLX-8 is a PTFE-based woven-glass laminate and requires a dedicated PTFE process line (special drilling, desmear and bonding). It must not be mixed with standard FR-4 production.