Riston® DI3038

Riston® DI3038

Qnity began formulating specialized photoresists for Laser Direct Imaging (LDI) over 20 years ago, and continues to lead the industry with its Riston® LaserSeries films. Ultra fast photospeed, high performance, and compatibility with conventional printed wiring board (PWB) processes are critical to help PWB fabricators optimize their LDI equipment investments.

Applications
  • Negative working, aqueous processable dry film photoresist
  • Suitable for Tent & Etch and Plating application with high acid resistance performance for better yields
  • Suitable for multiple wavelength direct imaging with tenting requirement
  • Vivid print out image after exposure for easy inspection.
Recommendations
  • 3F or 4F grade, fused, 15-20 % v/v, 9-12 mm (3/8-1/2") brush foot print, fines removal and replenishment per vendor recommendations; high pressure (10 bar) final rinse (pH 6-8); hot air dry.
  • 3F or 4F grade, unfused, 15–20 % v/v, fines removal and replenishment per vendor recommendations; high pressure 10 bar (147 PSI) final rinse (pH 6–8); hot air dry.
  • 500 grit; 7-9 mm (1/4- 3/8") brush foot print; high pressure (8- 10 bar) final rinse (pH 6-8)
  • 500 grit; 7-9 mm (1/4-3/8") brush foot print; final rinse: 2-3 bar, pH 6-8
  • Drying: blow dry thoroughly; Hot air preferred.
  • Effective Rinse Length: 1/3-1/2 of length of developer chamber; >1/2 preferred.
  • Rinse spray pressure: 1.4-2.4 bar (20-35 psig). Use high impact , direct-fan nozzles.
  • Rinse temperature: 15-25°C (60-80°F)
  • Rinse water: hard water (150–250 ppm CaCO3 equivalent)
Solutions
  • Batch: up to 0.5 mil-m2 /liter (20 mil-square feet/gallon). Maintain breakpoint at <50% by lowering conveyor speed or by starting batch stripping with a lower breakpoint and changing the solution once breakpoint moves above 50%.
  • Developer conveyor speed: see “Dwell Time”.
  • Dry Film Photoresist
  • Feed & Bleed: to keep loading at about 0.2 mil-m2 /L (8 mil-ft2 /gal), activate addition of fresh developer at pH 10.5; stop addition when pH 10.7 is reached.
  • Filtration Systems Spray stripping equipment should contain a filtration system to collect and remove resist skins to avoid nozzle clogging, to extend stripper life, and to avoid resist skins from reaching the rinse chamber.
  • Preferred: Continuous replenishment (feed & bleed) using board count. Maintain resist loading at ≤ 0.4 mil-m2 /L (≤ 15 mil-square feet/ gallon).
  • The most effective filter systems collect the stripper skins immediately after they were generated, before entering recirculation pumps, and they feature continuous removal of skins from the stripper solution.
 
 
 

Features & benefits

  • Capable with i-line & h-line multiple wavelength DI equipment
  • Excellent chemical resistance with no ragged line
  • Low sludge/foaming for easy maintenance 
  • Superior tenting capability – larger than 7mm round holes and 2*10 mm slot holes @38um FT
  • Wide operation window by fine line capability
    		•
    SAFE LIGHTING
  • All films especially partially used rolls must be kept with black-plastic at all times.
  • High intensity (up to 70 footcandles) yellow “safe light” causes a change in steps held and should be avoided.
  • Protect photoresist through lamination and development steps from UV radiation and visible light up to 450 nm by use of yellow, amber or gold fluorescent “safe lights”.
    		•
    Proprietary Strippers
  • Are used for higher strip speed, higher resist loading, to minimize chemical attack on tin or tin/lead, or to reduce copper oxidation, e.g. to facilitate AOI.
    		•
    ETCHING
  • Riston® DI3000 resists are compatible with most acid etchants, e.g. cupric chloride (free HCl normality ≤ 3.0 N), H2 O2 /H2 SO4, and ferric chloride.
    		•
    PERFORMANCE ON FLEXIBLE SUBSTRATES
  • Riston® D13000 can be used successfully on thin core laminate and flexible substrates with the removal of antitarnish before dry film lamination.
    		•
    PLATING
  • Riston® DI3000 resists are compatible with most plating chemicals; DI3000 has very strong resistance to lifting/under plating and organic leaching. Please contact a Qnity technical representative for further details.
    		•
     
     
     

    Available Sizes

    Gross Weight Net Weight Carton Each Carton Length Carton Weight Carton Height
    93 0 0 0
    13756 0 0 0
    1395 0 0 0
     
     
     

    Physical Properties

    Property Value Unit Method
    Exposure Energy RST-25 — 16-22 mJ(405 nm)
    (NaOH or KOH) Conveyorized Stripping — (riston-1) sec 65-71 s
    Time to Clean — (riston-1) sec 26
    Pre-Heat Qnity HRL-24 — Optional
    Lamination Speed Qnity ASL-24 / Yieldmaster® Laminator — 1.5–3 M/min (5–10 ft/min)
    Seal Bar Temp Qnity ASL-24 / Yieldmaster® Laminator — 70 ± 15 °C (168 ± 27 °F)
    Seal Time Qnity ASL-24 / Yieldmaster® Laminator — 2–4 seconds
    Roll Temperature Qnity HRL-24 — 115 ± 5 °C (239 ± 9 °F)
    Seal Bar Pressure Qnity ASL-24 / Yieldmaster® Laminator — 3.5–4.5 bar (50–65 psig)
    Lamination Temp Qnity ASL-24 / Yieldmaster® Laminator — 105 ± 5 °C (220 ± 9 °F)
    Odor — (riston-1) — Low
    Exposed Color in Daylight — (riston-1) — Dark Blue
    Unexposed Color in Yellow Light — (riston-1) — Blue
    Exposed Color in Yellow Light — (riston-1) — Dark Blue
    Contrast to Copper — (riston-1) — Good
    Air Assist Pressure Qnity HRL-24 — 0–2.8 bar (0–40 psig)
    Print-Out (Phototropic) Image — (riston-1) — Strong
    Roll Speed Qnity HRL-24 — 0.6–1.5 m/min (2–5 ft/min)
    Lam. Roll Pressure Qnity ASL-24 / Yieldmaster® Laminator — 3.0–5.0 bar (43–72 psig)
    pH(11) — (riston-1) mil 0.036
    pH(10.84 ) — (riston-1) mil 0.145
    Spray Nozzles — (riston-1) — high impact direct-fan nozzles preferred
    Na2CO3 — (riston-1) kg wt% × sump vol liters × 0.01
    — (riston-1) lb wt% × sump vol gallons × 0.083
    — (riston-1) — 0.7–1.2 wt%; 0.85 wt% preferred
    pH(10.63) — (riston-1) mil 0.255
    D-4000 — (riston-1) liters wt% × sump vol liters
    pH(11.34) — (riston-1) mil 0
    pH(10.77) — (riston-1) mil 0.182
    K2CO3 — (riston-1) — 0.8–1.2 wt%; 1.0 wt% preferred
    — (riston-1) lb wt % x sump vol gallons × 0.083
    — (riston-1) kg wt% × sump vol liters × 0.01
    pH(10.57) — (riston-1) mil 0.291
    Na2CO3•H2O — (riston-1) — 0.8–1.3 wt%; 1.0 wt% preferred
    pH(10.7) — (riston-1) mil 0.218
    Temperature — (riston-1) — 27–35 °C (80–95 °F); 30 °C (85 °F) preferred
    pH(10.94) — (riston-1) mil 0.109
    pH(11.07) — (riston-1) mil 0.073
    Spray Pressure — (riston-1) — 1.4–2.1bar (20–30 psig)
     
     
     
    Product Details

    Fabric/material

    GRECO PROD

    Design

    DI3038

    Seam

    DI3000

    Packaging

    DI3038

    Hazard

    Coated Material

    PRIMARY IMAGING FILM

    Features

    CI-DI MLB
     
     
     
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