吃瓜tv / RF MATERIALS & FABRICATION
Taconic TLY-5 & TLY-5A PCB Materials
Low-Dk transmission lines and antenna feed networks. Use the source context, engineering checks and project tools below to turn the material name into a usable fabrication specification.
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What to specify for TLY-5
Taconic TLY-5 is covered here as a named RF material. TLY-5 is 2.20; TLY-5A is 2.17. Their suffixes identify different materials, not a tolerance bin.
| Field | Specification context |
|---|---|
| Material identity | TLY-5 |
| Reference Dk | 2.2 |
| Reference Df | 0.0009 |
| Test context | Dk/Df: 10 GHz, IPC-TM-650 2.5.5.5 |
| Thermal conductivity | 0.22 W/m路K; see specimen/test condition |
| Supply status | Confirm current grade, thickness, foil and order quantity; no stock promise |
Do not miss: TLY-5 is 2.20; TLY-5A is 2.17. Their suffixes identify different materials, not a tolerance bin.
Reference trail: 路 路 . Numerical values are typical material references, not purchase acceptance limits, live stock or guaranteed fabricated performance.
TLY-5 versus TLY-5A
| Grade | Reference Dk | Reference Df | Decision |
|---|---|---|---|
| TLY-5 | 2.20 | 0.0009 | Use the approved 5 grade and its ordered construction. |
| TLY-5A | 2.17 | 0.0009 | Keep the A suffix; recalculate geometry when changing grades. |
Both rows are 10 GHz supplier references. Similar loss values do not establish mechanical, processing or application equivalence. .
Woven reinforcement and the RF reference path
Woven glass supports the PTFE structure, but the electrical path still depends on local geometry, foil and dielectric thickness. Keep the glass style, copper profile and source revision in the material callout. For precision phase matching, investigate routing orientation and length over the reinforcement rather than treating nominal Dk as a complete description.
- Compare line width at the chosen dielectric height
- Include copper profile in the loss budget
- Retain the same glass orientation and panel direction in repeat builds
Taconic PCB Design Workbench
The RF tool uses an editable model Dk; the preset is a supplier reference at its stated method and frequency. It is not a universal design Dk. Blank parameters stay blank until you provide a value. Geometry calculations do not approve a fabrication tolerance.
For microstrip, h is the dielectric separation to the reference plane; for symmetric stripline it is the total plane spacing. Propagation follows 位g = c/(f鈭毼礶ff). Thermal screening uses R = h/(kA). Read the selected model鈥檚 exclusions beside the result.
For more geometries and fabrication tolerance context, use the PCB impedance calculator and design guide.
From material callout to fabricated PCB
Material release
Name TLY-5, the supplier revision, thickness and foil. Separate approved substitutions from suggestions awaiting approval.
CAM and stackup
Review layer references, panelization, copper balance, minimum features and finished geometry. Compare line width at the chosen dielectric height.
Process definition
Use the applicable laminate and bonding guides. Agree drilling, hole-wall treatment and lamination details for this construction; do not assume a universal FR-4 recipe.
Patterning and final build
Control conductor geometry, hole quality, mask openings and finish on exposed RF areas. Include special edges, cavities or connectors in the release.
Inspection and acceptance
Define dimensional, netlist and impedance checks. RF loss or phase measurements need a separate coupon/fixture, frequency range and acceptance limit.
Review the manufacturing capability tables for general process limits and quality documentation and acceptance planning for supplier review. A listed material property is not a 吃瓜tv test report.
TLY-5 PCB cost & quotation brief
A quote for TLY-5 depends on the approved material construction, purchased sheet utilization, quantity, layer count, drilling/lamination work, finish and inspection scope. There is no defensible fixed 鈥淭aconic multiplier鈥� across these products. For older designations, sourcing confirmation may be the first cost decision.
Taconic PCB Cost & Quotation Brief
Use the brief without prices, or enter your own setup and fabrication-area allowances to explore a simple two-layer planning range. The tool does not contain verified current supplier rates. Hybrid, multilayer, bonding-film and RF-qualified builds are routed to engineering quotation.
| Cost question | Information to provide |
|---|---|
| Material | Exact code, thickness, foil, substitutions allowed or prohibited |
| Fabrication | Gerber/ODB++, drill data, stackup, copper, outline and special features |
| Acceptance | Net classes, impedance target/tolerance and any RF test fixture |
| Order | Quantity, requested delivery date, repeat-build needs and assembly scope |
TLY-5 questions before ordering
What does the TLY-5 material name guarantee?
It identifies a material or family to resolve in the supplier documentation. The exact code, thickness, foil and data-sheet revision still need to be specified. It does not guarantee 吃瓜tv stock, lead time or an application qualification.
Which Dk should I use in my RF model?
Dk/Df: 10 GHz, IPC-TM-650 2.5.5.5. Use a model Dk appropriate to your geometry and frequency. A process test value is useful reference data but is not automatically the effective permittivity of a microstrip.
Can I replace TLY-5 with another Taconic or Rogers grade?
TLY-5 is 2.20; TLY-5A is 2.17. Their suffixes identify different materials, not a tolerance bin. Compare the complete electrical, mechanical and processing requirements, then approve the alternate explicitly.
What design detail deserves the first review?
Compare line width at the chosen dielectric height. Track the signal to its adjacent reference plane. A split or void can change the return path even if line width is correct.
Does a netlist test verify RF performance?
No. Netlist testing checks connectivity. RF performance requires defined measurement structures, frequency range, reference planes and limits. State the required measurement in the RFQ.
How do I obtain a usable quotation?
Send the fabrication files, drill data, stackup, exact material code, quantity and acceptance requirements. Include your requested date; the delivery commitment depends on sourcing and process review.
Next useful references: Taconic PCB manufacturing 路 full Taconic material directory 路 TLY-3 路 TLX-8.
Send the design with its material context
Preliminary files are welcome. Identify the design revision and open material decisions so the enquiry can address the actual manufacturing scope.
Send TLY-5 files for review