Surface Finishes:

We offer all available board surface finishes. Depending on lead-time requirements, some finishes are applied in-house while some are sent to Outside Service.

Our current in-house finishes include:

• Sn/Pb HASL,
• LEAD-FREE HASL,
• ENIG (Electroless Nickel Immersion Gold), and
• Immersion Silver.

Using Outside Sevices we also offer:

• Hard Body Gold,
• Selective Finishes (i.e. ENIG & Hard Body Gold),
• Electroless White Tin
• ENEPIG

Materials Used:

Rockymountain Circuits uses the best materials we can acquire for the most economical price, in order to pass the savings on to our customers.

We have substantial stock and consignment agreements with our suppliers in order to assure that materials necessary for your build are on our shelf. We stock and have agreements with top tier manufacturers such as ISOLA group, Nelco Products, Rogers, Arlon, Taconic, Grace, Ventek, and other specialty manufacturers.

We build all of our multilayer pcb boards using RoHS materials, even if your callout is for standard leaded HASL. Our standard RoHS materials have Tg180°C, Td 340°C, MOT 130°C, and are covered under IPC4101C/21, IPC4101C/24, IPC4101C/26, IPC4101C/98, IPC4101C/99, IPC4101C/10, and IPC4101C/126. We also carry High Speed and High Temp materials to cover standard requirements under IPC4101C/25, and IPC4101C/40, IPC4101C/41, and IPC4101/42.

The following are the current standard materials that we have chosen to stock. This list has been compiled through rigorous testing, assuring that the materials we stock are the most dependable for the job:

• Double Sided Standard FR4 Material: Grace GA140 (MTC-97) Tg 140°C – IPC 4101/21 Ventek VT48 Tg150°C – IPC 4101/21
• Double Sided Standard RoHS Materials: Grace GA170LL Tg 180°C Ventek VT47 Tg 180°C ISOLA FR406 Tg 150°C ISOLA PCL370HR Tg 180°C Ventek VT901 Polyimide ISOLA Getek200 ISOLA Getek G200
• Multilayer Materials: Grace GA170LL Tg 180°C – IPC 4101/26+ Ventek VT47 Tg 180°C – IPC4101/26+ ISOLA FR406 Tg 150°C – IPC 4101/21 ISOLA PCL370HR Tg 180°C – IPC 4101/26+ ISOLA GETEK200 Ventek VT901 Polyimide Rogers RO4350 Rogers RD4003
• RF materials: ARLON AD410 ARLON AD450 ARLON AD1000 ARLON 25N ARLON 45N ARLON 880B ARLON 933 ARLON 917 TACONIC TLY3 TACONIC TLY5 ROGERS 3203 ROGERS 4003C ROGERS 4350B ROGERS 5870 ROGERS TMM3 ROGERS 4450B Bond-Ply ROGERS 3001 Bond-Ply DUPONT FEP Bond-
• INSULATED METAL SUBSTRATES – ALUMINUM CORE ITEQ 0.060 2/2
• Flex and Rigid-Flex  DUPONT PYRALUX MATERIALS