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Solder Mask. PSR-4000BV Datasheet

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Solder Mask. PSR-4000BV Datasheet






PSR-4000BV Mask. Datasheet pdf. Equivalent




PSR-4000BV Mask. Datasheet pdf. Equivalent





Part

PSR-4000BV

Description

Liquid Photoimageable Solder Mask



Feature


.
Manufacture

Taiyo

Datasheet
Download PSR-4000BV Datasheet


Taiyo PSR-4000BV

PSR-4000BV; .


Taiyo PSR-4000BV

.


Taiyo PSR-4000BV

.

Part

PSR-4000BV

Description

Liquid Photoimageable Solder Mask



Feature


.
Manufacture

Taiyo

Datasheet
Download PSR-4000BV Datasheet




 PSR-4000BV
www.DataSheet4U.com
TAIYO PSR-4000BV AUS5
LIQUID PHOTOIMAGEABLE SOLDER MASK
Designed for Packaging Applications
Screen or Spray Application
Excellent Thermal and Crack Resistance
Hard Surface Finish
Fine Dam Resolution
RoHS Compliant
Excellent Resistance to ENIG and
Immersion Tin Plating
Compatible with Lead-Free Processing
Low Water Absorption
Revised June 2005




 PSR-4000BV
www.DataSheet4U.com
PROCESSING PARAMETERS FOR PSR-4000BV AUS5
PSR-4000BV AUS5 is a two-component, gloss Green, liquid photoimageable solder mask for
flood screen printing. PSR-4000BV AUS5 has been specifically designed for BGA, Flip-Chip
and other Chip Scale Packaging (CSP) applications. PSR-4000BV AUS5 has excellent
moisture resistance properties, very good resistance to ENIG and can withstand pressure
cooker type testing (PCT). PSR-4000BV AUS5 meets or exceeds the requirements of IPC SM-
840C Class H and Class T, Bellcore GR-78-CORE Issue 1, and has a UL flammability rating of
94V-0. All Taiyo America products comply with the Directive 2002/95/EC of the European
Parliament and of the Council of 27 January 2003 on the Restriction of the use of certain
Hazardous Substances (RoHS) in electrical and electronic equipment.
PSR-4000BV AUS5 COMPONENTS
PSR-4000BV AUS5 /
Mixing Ratio 100 parts
Color
Green
Mixed Properties
Solids
76%
Viscosity
200 – 240 ps
Specific Gravity
1.36
CA-40BB
43 parts
White
MIXING
PRE-CLEANING
PSR-4000BV AUS5 is supplied in pre-measured containers with a mix
ratio by weight of 100 parts PSR-4000BV AUS5 and 43 parts CA-40BB.
PSR-4000BV AUS5 can be mixed by hand with a mixing spatula for 10 –
15 minutes. Mixing can be done with a mechanical mixer at low speeds to
minimize shear thinning for 10 – 15 minutes. Also, mixing can be done
with a paint shaker for 10 – 15 minutes.
Prior to solder mask application, the printed circuit board surface needs to
be cleaned. Various cleaning methods include Pumice, Aluminum Oxide,
Mechanical Brush, and Chemical Clean. All of these methods will provide
a clean surface for the application of PSR-4000BV AUS5. Hold time after
cleaning the printed circuit board should be held to a minimum to reduce
the oxidation of the copper surfaces.
Page 2 of 7




 PSR-4000BV
www.DataSheet4U.com
PROCESSING PARAMETERS FOR PSR-4000BV AUS5
SCREEN PRINTING
Method: Single Sided and Double Sided Screening
Screen Mesh: 74 – 110
Screen Mesh Angle: 22.5° Bias
Screen Tension: 20 - 28 Newtons
Squeegee: 60 – 80 durometer
Squeegee Angle: 27 – 35°
Printing Mode: Flood / Print / Print
Flood Pressure: 20 – 30 psi
Printing Speed: 2.0 – 9.9 inches/sec
Printing Pressure: 70 – 100 psi
TACK DRY CYCLE
The Tack Dry step is required to remove solvent from the solder mask
film and produce a firm dry surface. The optimum dwell time and oven
temperature will depend on oven type, oven loading, air circulation,
exhaust rate, and ramp times. Excessive tack dry times and temperature
will result in difficulty developing solder mask from through holes and a
reduction in photo speed. Insufficient tack dry will result in artwork
marking and/or sticking. Typical tack dry conditions for PSR-4000BV
AUS5 is as followed:
Oven Temperature: 160 - 180°F (71 - 82°C)
For Single-Sided (Batch Oven)
1st Side:
Dwell Time: 15 - 20 minutes
2nd Side:
Dwell Time: 35 - 45 minutes
For Double-Sided (Conveyorized or Batch Oven)
Dwell Time: 35 – 60 minutes
EXPOSURE
PSR-4000BV AUS5 requires UV exposure to define solder mask dams
and features. The spectral sensitivity of PSR-4000BV AUS5 is in the area
of 365 nm. Exposure times will vary by bulb type and age of the bulb.
Below are guidelines for exposing PSR-4000BV AUS5.
Exposure Unit: 5 kW or higher
Stouffer Step 21: Clear 10 minimum (on metal / under phototool)
Energy: Minimum 300 mJ / cm2 (under phototool)
Page 3 of 7






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